<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2019 Workiva-->
<!--r:dbbbf2c5-69a5-42e8-8b7e-d02356c8e10b,g:f8b31259-8a19-4777-9117-9b13d46aee2e-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.ti.com/role/CoverPage" xlink:type="simple" xlink:href="txn-20190930.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/CoverPage" xlink:type="extended" id="i0b501f698af74d1095fc31a274aadd4f_c8acf948-34f7-40ce-b05f-589e9f9bbbc6"/>
  <link:roleRef roleURI="http://www.ti.com/role/ConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="txn-20190930.xsd#ConsolidatedStatementsofIncome"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ConsolidatedStatementsofIncome" xlink:type="extended" id="iba8d08499d1e4d9e91739b0df0188553_46fb0884-4703-40c3-a9b1-311fdd78c6ca"/>
  <link:roleRef roleURI="http://www.ti.com/role/ConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="txn-20190930.xsd#ConsolidatedStatementsofComprehensiveIncome"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ConsolidatedStatementsofComprehensiveIncome" xlink:type="extended" id="ib425e5df383a42d79ec5907423e2f8a7_aec0bc4b-6cee-4579-b497-8e2fad081356"/>
  <link:roleRef roleURI="http://www.ti.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="txn-20190930.xsd#ConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ConsolidatedBalanceSheets" xlink:type="extended" id="i4a51f2d7a5154f2b8b725d79ef467a4b_09483edc-39a3-4267-a8b8-7950b6d2bb02"/>
  <link:roleRef roleURI="http://www.ti.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="txn-20190930.xsd#ConsolidatedBalanceSheetsParenthetical"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended" id="i7ad3455e31f74b72b5f36e3591f1f90a_c107a596-d750-4eea-ad53-ea3691d06011"/>
  <link:roleRef roleURI="http://www.ti.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="txn-20190930.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended" id="id31eee105b144cc59763d9935fb2b77e_f6105777-76f3-49e6-89d2-994313aeade9"/>
  <link:roleRef roleURI="http://www.ti.com/role/Descriptionofbusinessincludingsegmentandgeographicareainformation" xlink:type="simple" xlink:href="txn-20190930.xsd#Descriptionofbusinessincludingsegmentandgeographicareainformation"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Descriptionofbusinessincludingsegmentandgeographicareainformation" xlink:type="extended" id="i0f82e316b3f24a48a99c5ccca5399600_fb6e4f48-3db0-435d-9223-65e7d82ed922"/>
  <link:roleRef roleURI="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationTables" xlink:type="simple" xlink:href="txn-20190930.xsd#DescriptionofbusinessincludingsegmentandgeographicareainformationTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationTables" xlink:type="extended" id="iae975ee6bda4453d87f49bd670ad74ed_aedc0ee0-d3aa-4d5a-bce7-40944c1ca62c"/>
  <link:roleRef roleURI="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#DescriptionofbusinessincludingsegmentandgeographicareainformationAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationAdditionalInformationDetails" xlink:type="extended" id="ibf7bc42e45294f46b29d3766977a1989_0b0ceb11-544c-453a-9499-d5a9ba9dfc88"/>
  <link:roleRef roleURI="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationSegmentInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#DescriptionofbusinessincludingsegmentandgeographicareainformationSegmentInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationSegmentInformationDetails" xlink:type="extended" id="i62ffd545173345aa9eba18f30e9b6578_8d0c0f07-fd19-4bb7-a614-58c5f0f6f645">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_055343a2-a9d5-4318-94b7-1890dfdf4b9f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_fc83d265-7506-4fb3-8cf4-4e24886b9d84" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_055343a2-a9d5-4318-94b7-1890dfdf4b9f" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_fc83d265-7506-4fb3-8cf4-4e24886b9d84" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_3f5553a6-9c29-4739-afa4-858d68f8ff0a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_055343a2-a9d5-4318-94b7-1890dfdf4b9f" xlink:to="loc_us-gaap_OperatingIncomeLoss_3f5553a6-9c29-4739-afa4-858d68f8ff0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3b5bfe66-73d0-48ec-8af0-42467536399a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_055343a2-a9d5-4318-94b7-1890dfdf4b9f" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3b5bfe66-73d0-48ec-8af0-42467536399a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_6027e6ad-99b7-4326-b0a9-b06e11abb9e7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3b5bfe66-73d0-48ec-8af0-42467536399a" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_6027e6ad-99b7-4326-b0a9-b06e11abb9e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6027e6ad-99b7-4326-b0a9-b06e11abb9e7_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6027e6ad-99b7-4326-b0a9-b06e11abb9e7" xlink:to="loc_us-gaap_SegmentDomain_6027e6ad-99b7-4326-b0a9-b06e11abb9e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f7627e3f-8f98-473f-a5c5-38f0783c3ea1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6027e6ad-99b7-4326-b0a9-b06e11abb9e7" xlink:to="loc_us-gaap_SegmentDomain_f7627e3f-8f98-473f-a5c5-38f0783c3ea1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_AnalogMember_9e155a27-18b6-4798-8c65-0478d846868b" xlink:href="txn-20190930.xsd#txn_AnalogMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_f7627e3f-8f98-473f-a5c5-38f0783c3ea1" xlink:to="loc_txn_AnalogMember_9e155a27-18b6-4798-8c65-0478d846868b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_EmbeddedProcessingMember_bf827226-a103-4d55-8642-e4a69850bb88" xlink:href="txn-20190930.xsd#txn_EmbeddedProcessingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_f7627e3f-8f98-473f-a5c5-38f0783c3ea1" xlink:to="loc_txn_EmbeddedProcessingMember_bf827226-a103-4d55-8642-e4a69850bb88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_b6d2fa07-76b3-4271-9c29-fe00d3571dc6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_f7627e3f-8f98-473f-a5c5-38f0783c3ea1" xlink:to="loc_us-gaap_AllOtherSegmentsMember_b6d2fa07-76b3-4271-9c29-fe00d3571dc6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationGeographicAreaInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#DescriptionofbusinessincludingsegmentandgeographicareainformationGeographicAreaInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationGeographicAreaInformationDetails" xlink:type="extended" id="i17c15ec8fd4b4a7fa4fea7cd942fe844_a3daf515-4d88-41d2-9dbe-710a50aa8770">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_e94b9289-c044-4949-87b2-e91a137df17d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_b5942f2b-e478-4d2f-a1d3-fee8b96712e5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e94b9289-c044-4949-87b2-e91a137df17d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_b5942f2b-e478-4d2f-a1d3-fee8b96712e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f93ff25e-d3be-4293-81a8-431804b3fd2a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e94b9289-c044-4949-87b2-e91a137df17d" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f93ff25e-d3be-4293-81a8-431804b3fd2a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_ffc470b6-9c35-4b4d-baef-861e1229e7a5" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f93ff25e-d3be-4293-81a8-431804b3fd2a" xlink:to="loc_srt_StatementGeographicalAxis_ffc470b6-9c35-4b4d-baef-861e1229e7a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ffc470b6-9c35-4b4d-baef-861e1229e7a5_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_ffc470b6-9c35-4b4d-baef-861e1229e7a5" xlink:to="loc_srt_SegmentGeographicalDomain_ffc470b6-9c35-4b4d-baef-861e1229e7a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_ffc470b6-9c35-4b4d-baef-861e1229e7a5" xlink:to="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_0f9a768a-a9a2-4dfb-b336-92d70ceb4822" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:to="loc_country_US_0f9a768a-a9a2-4dfb-b336-92d70ceb4822" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AsiaMember_e6a36ffd-a20a-4360-806a-3920546d2261" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AsiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:to="loc_srt_AsiaMember_e6a36ffd-a20a-4360-806a-3920546d2261" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EMEAMember_67796c8f-04d5-420b-86a6-d7ef8145a247" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EMEAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:to="loc_us-gaap_EMEAMember_67796c8f-04d5-420b-86a6-d7ef8145a247" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_JP_56801805-25f1-4011-a6d3-098b5a3f9fd0" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_JP"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:to="loc_country_JP_56801805-25f1-4011-a6d3-098b5a3f9fd0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_RestOfWorldMember_83d329f6-6b48-4835-987f-be7e735f440b" xlink:href="txn-20190930.xsd#txn_RestOfWorldMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:to="loc_txn_RestOfWorldMember_83d329f6-6b48-4835-987f-be7e735f440b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CN_4ad6667b-67ee-4279-b89d-51b8ffefb8b8" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_CN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_14079bea-d838-4b13-98b2-3d418859ed4d" xlink:to="loc_country_CN_4ad6667b-67ee-4279-b89d-51b8ffefb8b8" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/Basisofpresentationandsignificantaccountingpoliciesandpractices" xlink:type="simple" xlink:href="txn-20190930.xsd#Basisofpresentationandsignificantaccountingpoliciesandpractices"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Basisofpresentationandsignificantaccountingpoliciesandpractices" xlink:type="extended" id="i700b847ce3e445bd87faac6da6949da6_6c5401af-e855-4506-b655-1e894c9351c7"/>
  <link:roleRef roleURI="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesPolicies" xlink:type="simple" xlink:href="txn-20190930.xsd#BasisofpresentationandsignificantaccountingpoliciesandpracticesPolicies"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesPolicies" xlink:type="extended" id="i9ad7b600044540a3ba3478295be4c59d_5f890fc3-1ed2-40d1-9588-a83d402b1565"/>
  <link:roleRef roleURI="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesTables" xlink:type="simple" xlink:href="txn-20190930.xsd#BasisofpresentationandsignificantaccountingpoliciesandpracticesTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesTables" xlink:type="extended" id="i1cc2d501c9af43259e7f741454fa90da_3eee4c5a-1e36-4b35-92a7-a56a0d3d43f9"/>
  <link:roleRef roleURI="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesEarningsPerShareDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#BasisofpresentationandsignificantaccountingpoliciesandpracticesEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesEarningsPerShareDetails" xlink:type="extended" id="i8028e28d0f764c6ead4a49a013865516_5af54d4d-7d96-4592-b0d6-99002510b393"/>
  <link:roleRef roleURI="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#BasisofpresentationandsignificantaccountingpoliciesandpracticesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesAdditionalInformationDetails" xlink:type="extended" id="i0d8d7f2fa1ab4ad0bec5d42e79e2ef59_f6cb17b4-5188-4682-bff1-af3fb4968117">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_af6ce745-3d58-4367-bd59-79bd83299708" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_d85a100c-075f-455e-93b7-336e7c23b0f1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_af6ce745-3d58-4367-bd59-79bd83299708" xlink:to="loc_us-gaap_LongTermDebt_d85a100c-075f-455e-93b7-336e7c23b0f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_44e86c64-889a-4135-8fa9-b176c85fa278" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_af6ce745-3d58-4367-bd59-79bd83299708" xlink:to="loc_us-gaap_LongTermDebtFairValue_44e86c64-889a-4135-8fa9-b176c85fa278" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_9fe9fa18-fcad-4442-96dc-2f7cf1bf4057" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_af6ce745-3d58-4367-bd59-79bd83299708" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_9fe9fa18-fcad-4442-96dc-2f7cf1bf4057" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e90fe1f7-4217-4466-be11-081068538cbb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_9fe9fa18-fcad-4442-96dc-2f7cf1bf4057" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e90fe1f7-4217-4466-be11-081068538cbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e90fe1f7-4217-4466-be11-081068538cbb_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e90fe1f7-4217-4466-be11-081068538cbb" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e90fe1f7-4217-4466-be11-081068538cbb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6b9635f7-4679-40ec-9c31-b46c59bf1583" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e90fe1f7-4217-4466-be11-081068538cbb" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6b9635f7-4679-40ec-9c31-b46c59bf1583" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_20df21d2-bdaf-4d32-879c-a58fef1da934" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6b9635f7-4679-40ec-9c31-b46c59bf1583" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_20df21d2-bdaf-4d32-879c-a58fef1da934" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesChangesinAccountingStandardsDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#BasisofpresentationandsignificantaccountingpoliciesandpracticesChangesinAccountingStandardsDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesChangesinAccountingStandardsDetails" xlink:type="extended" id="i377832f1972249068300f2f7c9fbd877_fab65635-062c-40e4-9f6a-d777e1637628">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2c99babd-d1c5-4ce9-8bad-c89c8c356929" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_51500a72-6ec1-4433-bf90-9e8cd607036c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2c99babd-d1c5-4ce9-8bad-c89c8c356929" xlink:to="loc_us-gaap_OperatingLeaseLiability_51500a72-6ec1-4433-bf90-9e8cd607036c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_32692191-d343-4813-81d9-1dbd6fc42b81" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2c99babd-d1c5-4ce9-8bad-c89c8c356929" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_32692191-d343-4813-81d9-1dbd6fc42b81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_59929c12-a93f-40ab-b5fa-b738240f4f40" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2c99babd-d1c5-4ce9-8bad-c89c8c356929" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_59929c12-a93f-40ab-b5fa-b738240f4f40" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_bb8f2bc7-e26a-43ed-a365-ec291afe0ce0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_59929c12-a93f-40ab-b5fa-b738240f4f40" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_bb8f2bc7-e26a-43ed-a365-ec291afe0ce0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfAdoptionMember_bb8f2bc7-e26a-43ed-a365-ec291afe0ce0_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_bb8f2bc7-e26a-43ed-a365-ec291afe0ce0" xlink:to="loc_us-gaap_TypeOfAdoptionMember_bb8f2bc7-e26a-43ed-a365-ec291afe0ce0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfAdoptionMember_85dcdcca-cc18-4e09-b429-62d518d78de6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_bb8f2bc7-e26a-43ed-a365-ec291afe0ce0" xlink:to="loc_us-gaap_TypeOfAdoptionMember_85dcdcca-cc18-4e09-b429-62d518d78de6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdate201602Member_2e217396-0b04-45b3-afb9-36db4c942a5f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_85dcdcca-cc18-4e09-b429-62d518d78de6" xlink:to="loc_us-gaap_AccountingStandardsUpdate201602Member_2e217396-0b04-45b3-afb9-36db4c942a5f" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/Incometaxes" xlink:type="simple" xlink:href="txn-20190930.xsd#Incometaxes"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Incometaxes" xlink:type="extended" id="ib644532b038f47c7b5d51847bf1fbe6a_c3460158-2e2d-4a62-a1a4-e6edf8fd4095"/>
  <link:roleRef roleURI="http://www.ti.com/role/IncometaxesTables" xlink:type="simple" xlink:href="txn-20190930.xsd#IncometaxesTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/IncometaxesTables" xlink:type="extended" id="idd35fbe0f2864dbeb36a215ff02cbe41_8e593072-6b67-43bb-8565-cfcc03ccfb92"/>
  <link:roleRef roleURI="http://www.ti.com/role/IncometaxesAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#IncometaxesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/IncometaxesAdditionalInformationDetails" xlink:type="extended" id="i8b29aadfe95440729c20f1d1810ef7a9_eb256e8c-ae44-4d6f-b316-84cf6147030e"/>
  <link:roleRef roleURI="http://www.ti.com/role/IncometaxesProvisionforIncomeTaxesDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#IncometaxesProvisionforIncomeTaxesDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/IncometaxesProvisionforIncomeTaxesDetails" xlink:type="extended" id="i0a1c610433b54b80930eae47096f16b1_5f27866a-2c50-4909-8a0d-09ed5d96bc2f"/>
  <link:roleRef roleURI="http://www.ti.com/role/Valuationofdebtandequityinvestmentsandcertainliabilities" xlink:type="simple" xlink:href="txn-20190930.xsd#Valuationofdebtandequityinvestmentsandcertainliabilities"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Valuationofdebtandequityinvestmentsandcertainliabilities" xlink:type="extended" id="iea802050c77448abb83eee7a0562abd2_78c935a1-ba7d-4f84-9932-2bb82d75e5f4"/>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesTables" xlink:type="simple" xlink:href="txn-20190930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesTables" xlink:type="extended" id="i3c0b9b1622d1422aa2a8bb485abcd3da_7a425666-3c83-4bd9-9201-d0150b20ec71"/>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesInvestmentsatFairValueDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesInvestmentsatFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesInvestmentsatFairValueDetails" xlink:type="extended" id="i25d7e41fd9b7425887a6ca4ee618a40f_7965a5bf-d1c0-490a-9444-9ba7e9104f64">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5a85545c-8eaf-47e8-acd6-ccd90b3ace85" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_ce45f188-8857-460c-8633-992fb767d938" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5a85545c-8eaf-47e8-acd6-ccd90b3ace85" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_ce45f188-8857-460c-8633-992fb767d938" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_6db006b9-b1b7-47e3-a1fd-70f9cc4bed84" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5a85545c-8eaf-47e8-acd6-ccd90b3ace85" xlink:to="loc_us-gaap_ShortTermInvestments_6db006b9-b1b7-47e3-a1fd-70f9cc4bed84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_2d66524b-d7f5-4380-b097-e48b8716e216" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5a85545c-8eaf-47e8-acd6-ccd90b3ace85" xlink:to="loc_us-gaap_LongTermInvestments_2d66524b-d7f5-4380-b097-e48b8716e216" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b5dd191d-637f-4825-aee1-9ebb45d29e40" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5a85545c-8eaf-47e8-acd6-ccd90b3ace85" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b5dd191d-637f-4825-aee1-9ebb45d29e40" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_730ed817-4d11-4a7e-b81d-094587d397b0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b5dd191d-637f-4825-aee1-9ebb45d29e40" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_730ed817-4d11-4a7e-b81d-094587d397b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_730ed817-4d11-4a7e-b81d-094587d397b0_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_730ed817-4d11-4a7e-b81d-094587d397b0" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_730ed817-4d11-4a7e-b81d-094587d397b0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_869125c0-b112-4a84-a547-cfc7a1912d9a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_730ed817-4d11-4a7e-b81d-094587d397b0" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_869125c0-b112-4a84-a547-cfc7a1912d9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_23bf89fd-3b8f-44a4-871c-7f8b4b89a8e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_869125c0-b112-4a84-a547-cfc7a1912d9a" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_23bf89fd-3b8f-44a4-871c-7f8b4b89a8e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_bfe458ad-0c07-4d7b-8418-2bcb5e5a12e6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_869125c0-b112-4a84-a547-cfc7a1912d9a" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_bfe458ad-0c07-4d7b-8418-2bcb5e5a12e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember_794549d3-e230-41ba-b2a9-ca7549b7c9ae" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_869125c0-b112-4a84-a547-cfc7a1912d9a" xlink:to="loc_us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember_794549d3-e230-41ba-b2a9-ca7549b7c9ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_230da18b-a681-4b6a-a636-2dd48ff43a74" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InformationByCategoryOfDebtSecurityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b5dd191d-637f-4825-aee1-9ebb45d29e40" xlink:to="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_230da18b-a681-4b6a-a636-2dd48ff43a74" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_230da18b-a681-4b6a-a636-2dd48ff43a74_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_230da18b-a681-4b6a-a636-2dd48ff43a74" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_230da18b-a681-4b6a-a636-2dd48ff43a74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_9b94a9aa-9a79-4c31-aba4-dc74eed0c050" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InformationByCategoryOfDebtSecurityAxis_230da18b-a681-4b6a-a636-2dd48ff43a74" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_9b94a9aa-9a79-4c31-aba4-dc74eed0c050" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesMember_39bd57d6-80f6-467c-b958-c2900a630929" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableforsaleSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_9b94a9aa-9a79-4c31-aba4-dc74eed0c050" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesMember_39bd57d6-80f6-467c-b958-c2900a630929" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_TradingSecuritiesMember_585ceaab-d863-4539-b296-07200024d5bd" xlink:href="txn-20190930.xsd#txn_TradingSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_9b94a9aa-9a79-4c31-aba4-dc74eed0c050" xlink:to="loc_txn_TradingSecuritiesMember_585ceaab-d863-4539-b296-07200024d5bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_1d94d6b8-7f25-42b8-a675-4047c2aed836" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b5dd191d-637f-4825-aee1-9ebb45d29e40" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_1d94d6b8-7f25-42b8-a675-4047c2aed836" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_1d94d6b8-7f25-42b8-a675-4047c2aed836_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_1d94d6b8-7f25-42b8-a675-4047c2aed836" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_1d94d6b8-7f25-42b8-a675-4047c2aed836_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_1d94d6b8-7f25-42b8-a675-4047c2aed836" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_a5ee155a-8f18-4e68-9532-0483548b249d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:to="loc_us-gaap_MoneyMarketFundsMember_a5ee155a-8f18-4e68-9532-0483548b249d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_ed920a05-968d-4c01-a668-822822192c5c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_ed920a05-968d-4c01-a668-822822192c5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_0b48e6b7-7afc-44fa-987e-977df1963e93" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_0b48e6b7-7afc-44fa-987e-977df1963e93" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_8f38477f-01b8-4b3c-9577-ed200bd6a051" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MutualFundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:to="loc_us-gaap_MutualFundMember_8f38477f-01b8-4b3c-9577-ed200bd6a051" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsMember_37d326dd-19f9-47d9-8c92-94b4a014b8cb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:to="loc_us-gaap_EquityMethodInvestmentsMember_37d326dd-19f9-47d9-8c92-94b4a014b8cb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_NonMarketableEquityInvestmentsMember_018113b3-f4f6-4dbb-b947-c6b5728e79a3" xlink:href="txn-20190930.xsd#txn_NonMarketableEquityInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:to="loc_txn_NonMarketableEquityInvestmentsMember_018113b3-f4f6-4dbb-b947-c6b5728e79a3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashMember_dfe58e23-9645-4e61-96b2-62b5fe52e0c8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e7680503-99f7-4fdb-9de5-a4ac32bc3ae9" xlink:to="loc_us-gaap_CashMember_dfe58e23-9645-4e61-96b2-62b5fe52e0c8" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesAdditionalInformationDetails" xlink:type="extended" id="ifcbb1f4842814e3a8a2c8e3ef03c3b7d_8a88fe58-f47e-42b7-8d18-cb05cac79634">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_0b29c2af-5f9d-4c08-bf14-d3e884d4ae79" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_8d00f642-164a-4284-8573-7538de25a02b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_0b29c2af-5f9d-4c08-bf14-d3e884d4ae79" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_8d00f642-164a-4284-8573-7538de25a02b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_f722f799-ac70-4399-a603-a2edc103371a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_0b29c2af-5f9d-4c08-bf14-d3e884d4ae79" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_f722f799-ac70-4399-a603-a2edc103371a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_958b8ef8-2348-4137-a26a-9d73b5a606c8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_f722f799-ac70-4399-a603-a2edc103371a" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_958b8ef8-2348-4137-a26a-9d73b5a606c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_958b8ef8-2348-4137-a26a-9d73b5a606c8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_958b8ef8-2348-4137-a26a-9d73b5a606c8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_958b8ef8-2348-4137-a26a-9d73b5a606c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a8a557f2-4dd1-4c9d-a507-05d29fbf6abb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_958b8ef8-2348-4137-a26a-9d73b5a606c8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a8a557f2-4dd1-4c9d-a507-05d29fbf6abb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_8e076d1b-6662-42f7-a2c0-083e36ea53b8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a8a557f2-4dd1-4c9d-a507-05d29fbf6abb" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_8e076d1b-6662-42f7-a2c0-083e36ea53b8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesAggregateMaturitiesofAvailableforsaleDebtInvestmentsDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesAggregateMaturitiesofAvailableforsaleDebtInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesAggregateMaturitiesofAvailableforsaleDebtInvestmentsDetails" xlink:type="extended" id="i1b493e1fddc246068fbc2a060540fee0_3619a84f-9bd8-4479-86c0-9c4c41b844d6"/>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="extended" id="i8907938d1e9541ceacf219cbbb548e6e_57d191e7-7034-468e-88e4-73f1cdf15888">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_76417c73-442c-4110-a7b3-a06515fc48e3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_365b3979-4264-41b9-aab8-aad1fa7d8401" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_76417c73-442c-4110-a7b3-a06515fc48e3" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_365b3979-4264-41b9-aab8-aad1fa7d8401" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_56370b66-6934-4f61-8d01-1d7818497280" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_76417c73-442c-4110-a7b3-a06515fc48e3" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_56370b66-6934-4f61-8d01-1d7818497280" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_81c317be-a4c4-4977-9d30-d08fd3878bf4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_76417c73-442c-4110-a7b3-a06515fc48e3" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_81c317be-a4c4-4977-9d30-d08fd3878bf4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_cf641252-4522-469b-b2f5-de61e087e9fb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_81c317be-a4c4-4977-9d30-d08fd3878bf4" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_cf641252-4522-469b-b2f5-de61e087e9fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_cf641252-4522-469b-b2f5-de61e087e9fb_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_cf641252-4522-469b-b2f5-de61e087e9fb" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_cf641252-4522-469b-b2f5-de61e087e9fb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_fcf8e59e-46b5-48ba-bebf-1fcda30e4278" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_cf641252-4522-469b-b2f5-de61e087e9fb" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_fcf8e59e-46b5-48ba-bebf-1fcda30e4278" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_16a2cbf5-c3ae-4da0-bf2b-917336dc7494" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_fcf8e59e-46b5-48ba-bebf-1fcda30e4278" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_16a2cbf5-c3ae-4da0-bf2b-917336dc7494" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_68ad5fac-8275-4b6e-b2f7-b18f79634535" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_81c317be-a4c4-4977-9d30-d08fd3878bf4" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_68ad5fac-8275-4b6e-b2f7-b18f79634535" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_68ad5fac-8275-4b6e-b2f7-b18f79634535_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_68ad5fac-8275-4b6e-b2f7-b18f79634535" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_68ad5fac-8275-4b6e-b2f7-b18f79634535_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2aa99241-2e64-4a84-b3a4-c25dcc70a46f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_68ad5fac-8275-4b6e-b2f7-b18f79634535" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2aa99241-2e64-4a84-b3a4-c25dcc70a46f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_19e4199e-ad23-4cec-b3f2-80f10cb8a96d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2aa99241-2e64-4a84-b3a4-c25dcc70a46f" xlink:to="loc_us-gaap_MoneyMarketFundsMember_19e4199e-ad23-4cec-b3f2-80f10cb8a96d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_25040a45-86fe-4352-812e-7fbe05f0a632" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2aa99241-2e64-4a84-b3a4-c25dcc70a46f" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_25040a45-86fe-4352-812e-7fbe05f0a632" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_d230231a-5ebf-4352-b9eb-9a5a6fbb8864" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2aa99241-2e64-4a84-b3a4-c25dcc70a46f" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_d230231a-5ebf-4352-b9eb-9a5a6fbb8864" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_8967b09e-5cd9-4d81-ace5-67067f4a62e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MutualFundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2aa99241-2e64-4a84-b3a4-c25dcc70a46f" xlink:to="loc_us-gaap_MutualFundMember_8967b09e-5cd9-4d81-ace5-67067f4a62e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a7531376-0da9-4828-bfd6-1ccaf842868c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_81c317be-a4c4-4977-9d30-d08fd3878bf4" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a7531376-0da9-4828-bfd6-1ccaf842868c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a7531376-0da9-4828-bfd6-1ccaf842868c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a7531376-0da9-4828-bfd6-1ccaf842868c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a7531376-0da9-4828-bfd6-1ccaf842868c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c796c8fe-dd98-43ea-9826-bd3ce54b2099" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a7531376-0da9-4828-bfd6-1ccaf842868c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c796c8fe-dd98-43ea-9826-bd3ce54b2099" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_a6a45d6a-b340-4eed-9243-c28ddc024c34" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c796c8fe-dd98-43ea-9826-bd3ce54b2099" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_a6a45d6a-b340-4eed-9243-c28ddc024c34" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_a9fa4cb0-33f4-42b0-9e5d-993ce7fb4e56" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c796c8fe-dd98-43ea-9826-bd3ce54b2099" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_a9fa4cb0-33f4-42b0-9e5d-993ce7fb4e56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_863402c1-b307-41ff-b731-d54c7e4827fa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_81c317be-a4c4-4977-9d30-d08fd3878bf4" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_863402c1-b307-41ff-b731-d54c7e4827fa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_863402c1-b307-41ff-b731-d54c7e4827fa_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_863402c1-b307-41ff-b731-d54c7e4827fa" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_863402c1-b307-41ff-b731-d54c7e4827fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_e4e51239-c485-4231-ad4c-f1bf6efa8190" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_863402c1-b307-41ff-b731-d54c7e4827fa" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_e4e51239-c485-4231-ad4c-f1bf6efa8190" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_DeferredCompensationMember_a0cb10e6-7a06-4abe-aff3-5c0c02835d12" xlink:href="txn-20190930.xsd#txn_DeferredCompensationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_e4e51239-c485-4231-ad4c-f1bf6efa8190" xlink:to="loc_txn_DeferredCompensationMember_a0cb10e6-7a06-4abe-aff3-5c0c02835d12" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/Goodwillandacquisitionrelatedintangibles" xlink:type="simple" xlink:href="txn-20190930.xsd#Goodwillandacquisitionrelatedintangibles"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Goodwillandacquisitionrelatedintangibles" xlink:type="extended" id="iddaa4dc00c2644f7b07c4e5aae3df0ea_e000c0ca-bfa4-4454-94dd-67ffe8e01162"/>
  <link:roleRef roleURI="http://www.ti.com/role/GoodwillandacquisitionrelatedintangiblesTables" xlink:type="simple" xlink:href="txn-20190930.xsd#GoodwillandacquisitionrelatedintangiblesTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/GoodwillandacquisitionrelatedintangiblesTables" xlink:type="extended" id="i2a37f2c5e1564f71a66050169825fa3b_1fb3b62f-9b38-49b3-ad94-06fa6f36eaff"/>
  <link:roleRef roleURI="http://www.ti.com/role/GoodwillandacquisitionrelatedintangiblesAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#GoodwillandacquisitionrelatedintangiblesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/GoodwillandacquisitionrelatedintangiblesAdditionalInformationDetails" xlink:type="extended" id="i4b05a3dbd0fe4cbebaf467e1299f63ff_3aa8a32a-7453-42ba-9135-d12fec3a389c"/>
  <link:roleRef roleURI="http://www.ti.com/role/GoodwillandacquisitionrelatedintangiblesComponentsofAcquisitionRelatedIntangibleAssetsDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#GoodwillandacquisitionrelatedintangiblesComponentsofAcquisitionRelatedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/GoodwillandacquisitionrelatedintangiblesComponentsofAcquisitionRelatedIntangibleAssetsDetails" xlink:type="extended" id="i6f4666c3f7284041b92538d2bc3a97e2_c51a1fdb-53dc-43f3-8bb1-6dcd5f874f70">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_f88f7091-5d0f-478a-ac9a-8f978f61488a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_b8f06cb8-e76d-4a7e-a8cc-99c99905dc65" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_f88f7091-5d0f-478a-ac9a-8f978f61488a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_b8f06cb8-e76d-4a7e-a8cc-99c99905dc65" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6dbabdd1-9428-4b11-8177-c4fc9da92dac" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_f88f7091-5d0f-478a-ac9a-8f978f61488a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6dbabdd1-9428-4b11-8177-c4fc9da92dac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_a08e9d6c-d137-4379-86f1-da1172736cc8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_f88f7091-5d0f-478a-ac9a-8f978f61488a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_a08e9d6c-d137-4379-86f1-da1172736cc8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_9da73094-3d31-494e-91c1-7a601b3e35c7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_f88f7091-5d0f-478a-ac9a-8f978f61488a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_9da73094-3d31-494e-91c1-7a601b3e35c7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_0b6e7da0-256f-4147-8ba5-cce5c74fb9e6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_f88f7091-5d0f-478a-ac9a-8f978f61488a" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_0b6e7da0-256f-4147-8ba5-cce5c74fb9e6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f9fdcb78-3761-4f20-8276-814ee81ce596" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_0b6e7da0-256f-4147-8ba5-cce5c74fb9e6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f9fdcb78-3761-4f20-8276-814ee81ce596" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_f9fdcb78-3761-4f20-8276-814ee81ce596_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f9fdcb78-3761-4f20-8276-814ee81ce596" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_f9fdcb78-3761-4f20-8276-814ee81ce596_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9a453e4c-1564-49d4-87c5-b7a66a278999" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f9fdcb78-3761-4f20-8276-814ee81ce596" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9a453e4c-1564-49d4-87c5-b7a66a278999" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_77e1801e-e0f0-4fa2-aa0f-62c0d99a88f2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9a453e4c-1564-49d4-87c5-b7a66a278999" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_77e1801e-e0f0-4fa2-aa0f-62c0d99a88f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_480f3fe9-4957-425d-b2e2-c167c0b94dff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_9a453e4c-1564-49d4-87c5-b7a66a278999" xlink:to="loc_us-gaap_CustomerRelationshipsMember_480f3fe9-4957-425d-b2e2-c167c0b94dff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_55b70821-2e35-4654-8b6e-c02dd8b6c9e7" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_0b6e7da0-256f-4147-8ba5-cce5c74fb9e6" xlink:to="loc_srt_RangeAxis_55b70821-2e35-4654-8b6e-c02dd8b6c9e7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_55b70821-2e35-4654-8b6e-c02dd8b6c9e7_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_55b70821-2e35-4654-8b6e-c02dd8b6c9e7" xlink:to="loc_srt_RangeMember_55b70821-2e35-4654-8b6e-c02dd8b6c9e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1e0f73da-eaa0-4984-944f-3d2f9db66ea5" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_55b70821-2e35-4654-8b6e-c02dd8b6c9e7" xlink:to="loc_srt_RangeMember_1e0f73da-eaa0-4984-944f-3d2f9db66ea5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f7dc82ee-90e5-4924-980c-aab5b1ca2d78" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1e0f73da-eaa0-4984-944f-3d2f9db66ea5" xlink:to="loc_srt_MinimumMember_f7dc82ee-90e5-4924-980c-aab5b1ca2d78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_ad77bf6c-98c6-4bc6-8c70-b84b2c3425eb" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1e0f73da-eaa0-4984-944f-3d2f9db66ea5" xlink:to="loc_srt_MaximumMember_ad77bf6c-98c6-4bc6-8c70-b84b2c3425eb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/Postretirementbenefitplans" xlink:type="simple" xlink:href="txn-20190930.xsd#Postretirementbenefitplans"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Postretirementbenefitplans" xlink:type="extended" id="i173891e22b4d4b7686dc6dd42342259c_eaa06532-1b0d-4cc2-b3c4-83a31a1e7815"/>
  <link:roleRef roleURI="http://www.ti.com/role/PostretirementbenefitplansTables" xlink:type="simple" xlink:href="txn-20190930.xsd#PostretirementbenefitplansTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/PostretirementbenefitplansTables" xlink:type="extended" id="i511f8d9446c24e12ab85d2fd88d8b534_83c535b8-e3a0-4c55-b988-62a44abc44b8"/>
  <link:roleRef roleURI="http://www.ti.com/role/PostretirementbenefitplansExpenseRelatedtoDefinedBenefitandRetireeHealthCareBenefitPlansDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#PostretirementbenefitplansExpenseRelatedtoDefinedBenefitandRetireeHealthCareBenefitPlansDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/PostretirementbenefitplansExpenseRelatedtoDefinedBenefitandRetireeHealthCareBenefitPlansDetails" xlink:type="extended" id="i674463002ec54cf482025425716a31c3_c140fe2d-3783-48c2-b43c-e8d5d1c7bdd1">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_e1c06884-6dda-426c-bcd6-742f218d947c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_e1c06884-6dda-426c-bcd6-742f218d947c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_db6eaa40-233d-4e66-b62d-b7df58a477c7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_db6eaa40-233d-4e66-b62d-b7df58a477c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_03694464-1bf2-4348-93c3-27bb42680bfc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_03694464-1bf2-4348-93c3-27bb42680bfc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_26ae5bbc-a958-4d3e-9bc7-064cbbdda5bb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_26ae5bbc-a958-4d3e-9bc7-064cbbdda5bb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_744df223-17c4-4b47-bbda-7808b97ec67b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_744df223-17c4-4b47-bbda-7808b97ec67b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_DefinedBenefitPlanNetPeriodicBenefitCostNetOfCharges_a9627093-3f53-4a19-ad3b-98c67414ec6e" xlink:href="txn-20190930.xsd#txn_DefinedBenefitPlanNetPeriodicBenefitCostNetOfCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_txn_DefinedBenefitPlanNetPeriodicBenefitCostNetOfCharges_a9627093-3f53-4a19-ad3b-98c67414ec6e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_6862e5b4-c116-4019-902a-44ab64e3f1e5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_6862e5b4-c116-4019-902a-44ab64e3f1e5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_c0afefdf-777a-429b-b965-ba1ecb31f101" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_c0afefdf-777a-429b-b965-ba1ecb31f101" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_830776d3-710d-4a76-ac7a-9d386f430597" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_194711f0-7147-4076-9adf-a4326f4de6f5" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_830776d3-710d-4a76-ac7a-9d386f430597" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_67b4e112-8e19-4222-9198-99fedd292c0d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_830776d3-710d-4a76-ac7a-9d386f430597" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_67b4e112-8e19-4222-9198-99fedd292c0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_67b4e112-8e19-4222-9198-99fedd292c0d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_67b4e112-8e19-4222-9198-99fedd292c0d" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_67b4e112-8e19-4222-9198-99fedd292c0d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_286203b7-0151-4287-9460-043b6998ec0d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_67b4e112-8e19-4222-9198-99fedd292c0d" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_286203b7-0151-4287-9460-043b6998ec0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_dd9c6dbe-2a09-487f-b347-9961d6ea2b39" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_286203b7-0151-4287-9460-043b6998ec0d" xlink:to="loc_us-gaap_DomesticPlanMember_dd9c6dbe-2a09-487f-b347-9961d6ea2b39" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_d99cee8b-490d-4b8b-a76a-06ccb22e24be" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_dd9c6dbe-2a09-487f-b347-9961d6ea2b39" xlink:to="loc_country_US_d99cee8b-490d-4b8b-a76a-06ccb22e24be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_fe813571-22f1-446d-a7c9-6b09ba37b184" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_286203b7-0151-4287-9460-043b6998ec0d" xlink:to="loc_us-gaap_ForeignPlanMember_fe813571-22f1-446d-a7c9-6b09ba37b184" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_ed6644e8-fc4f-47e2-8f80-2b874d7184c8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_830776d3-710d-4a76-ac7a-9d386f430597" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_ed6644e8-fc4f-47e2-8f80-2b874d7184c8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ed6644e8-fc4f-47e2-8f80-2b874d7184c8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ed6644e8-fc4f-47e2-8f80-2b874d7184c8" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ed6644e8-fc4f-47e2-8f80-2b874d7184c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_9024d7c5-18dc-498e-96d8-5a66f0d456ac" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ed6644e8-fc4f-47e2-8f80-2b874d7184c8" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_9024d7c5-18dc-498e-96d8-5a66f0d456ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_3baab3cf-77d5-4924-8453-e3d349ed8d6e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_9024d7c5-18dc-498e-96d8-5a66f0d456ac" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_3baab3cf-77d5-4924-8453-e3d349ed8d6e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_934e0903-715d-480d-aedd-e0daba318bfc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPostretirementHealthCoverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_9024d7c5-18dc-498e-96d8-5a66f0d456ac" xlink:to="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_934e0903-715d-480d-aedd-e0daba318bfc" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/Debtandlinesofcredit" xlink:type="simple" xlink:href="txn-20190930.xsd#Debtandlinesofcredit"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Debtandlinesofcredit" xlink:type="extended" id="i5c5def01a5c04c8889f2f1f43f7697c3_2222196e-0798-4ad2-86a1-e9b607b0b64b"/>
  <link:roleRef roleURI="http://www.ti.com/role/DebtandlinesofcreditTables" xlink:type="simple" xlink:href="txn-20190930.xsd#DebtandlinesofcreditTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DebtandlinesofcreditTables" xlink:type="extended" id="id33e192a411742f5b757235d8f47343f_d709028a-8723-4ca7-9c2d-fded06e63339"/>
  <link:roleRef roleURI="http://www.ti.com/role/DebtandlinesofcreditAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#DebtandlinesofcreditAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DebtandlinesofcreditAdditionalInformationDetails" xlink:type="extended" id="i1720eedf85734a278b427c7b3df6ded0_9d761ba6-cabd-4706-a5fc-e3d4e8f446ac">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_544df213-d3bb-4543-aafd-8bd8f0034d9a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_544df213-d3bb-4543-aafd-8bd8f0034d9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaper_9439461c-210c-49bd-8b20-bd2d8b7db235" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialPaper"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_CommercialPaper_9439461c-210c-49bd-8b20-bd2d8b7db235" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_d8046609-44da-4590-9d20-a761d1192f94" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_d8046609-44da-4590-9d20-a761d1192f94" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_d3f39624-3656-4d36-8026-a1d40a7823f6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_d3f39624-3656-4d36-8026-a1d40a7823f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_f5860ee4-84c3-4119-a4ae-a15a56f9d2da" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_f5860ee4-84c3-4119-a4ae-a15a56f9d2da" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_bdcb2acb-d355-4767-995f-552429fb9128" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_bdcb2acb-d355-4767-995f-552429fb9128" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDebtExpense_212ecfd9-72eb-4a58-88b3-c585e84ece02" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndDebtExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_InterestAndDebtExpense_212ecfd9-72eb-4a58-88b3-c585e84ece02" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_fef0a01d-d06b-4d3e-9895-de185526d6fc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7f6e60ca-01ae-4505-8786-2389f78426e4" xlink:to="loc_us-gaap_DebtInstrumentTable_fef0a01d-d06b-4d3e-9895-de185526d6fc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_9b84188d-e397-44b0-89d5-65ec9feb9a72" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_fef0a01d-d06b-4d3e-9895-de185526d6fc" xlink:to="loc_us-gaap_CreditFacilityAxis_9b84188d-e397-44b0-89d5-65ec9feb9a72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_9b84188d-e397-44b0-89d5-65ec9feb9a72_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_9b84188d-e397-44b0-89d5-65ec9feb9a72" xlink:to="loc_us-gaap_CreditFacilityDomain_9b84188d-e397-44b0-89d5-65ec9feb9a72_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_d4755ab9-bcd9-4c42-bb54-20488cad5d34" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_9b84188d-e397-44b0-89d5-65ec9feb9a72" xlink:to="loc_us-gaap_CreditFacilityDomain_d4755ab9-bcd9-4c42-bb54-20488cad5d34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_20cc2f62-0905-4747-b09a-e8ad7095ed98" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_d4755ab9-bcd9-4c42-bb54-20488cad5d34" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_20cc2f62-0905-4747-b09a-e8ad7095ed98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_e405d5c0-e243-4400-b469-46639589b266" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_fef0a01d-d06b-4d3e-9895-de185526d6fc" xlink:to="loc_us-gaap_DebtInstrumentAxis_e405d5c0-e243-4400-b469-46639589b266" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e405d5c0-e243-4400-b469-46639589b266_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_e405d5c0-e243-4400-b469-46639589b266" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e405d5c0-e243-4400-b469-46639589b266_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a51578b7-f261-4cc5-b644-1526b3e70072" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_e405d5c0-e243-4400-b469-46639589b266" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a51578b7-f261-4cc5-b644-1526b3e70072" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointSixFivePercentNotesDueTwoThousandAndNineteenMember_9ffb04d8-0cb6-497a-bcb5-f39f76be2554" xlink:href="txn-20190930.xsd#txn_FixedOnePointSixFivePercentNotesDueTwoThousandAndNineteenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_a51578b7-f261-4cc5-b644-1526b3e70072" xlink:to="loc_txn_FixedOnePointSixFivePercentNotesDueTwoThousandAndNineteenMember_9ffb04d8-0cb6-497a-bcb5-f39f76be2554" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember_cc138bd5-95ff-4649-9ee6-77cbba575365" xlink:href="txn-20190930.xsd#txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_a51578b7-f261-4cc5-b644-1526b3e70072" xlink:to="loc_txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember_cc138bd5-95ff-4649-9ee6-77cbba575365" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedRate225Due2029Member_214c421f-efed-44e7-9ed0-3884689d151e" xlink:href="txn-20190930.xsd#txn_FixedRate225Due2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_a51578b7-f261-4cc5-b644-1526b3e70072" xlink:to="loc_txn_FixedRate225Due2029Member_214c421f-efed-44e7-9ed0-3884689d151e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/DebtandlinesofcreditScheduleofLongtermDebtOutstandingDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#DebtandlinesofcreditScheduleofLongtermDebtOutstandingDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DebtandlinesofcreditScheduleofLongtermDebtOutstandingDetails" xlink:type="extended" id="icc8d54255c1d40f6894515ef8a68d989_4fb3459d-36fb-4065-980a-ce81776a4538">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6bb7909f-6bf5-42ca-b6c3-7438d7a2ce91" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6bb7909f-6bf5-42ca-b6c3-7438d7a2ce91" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_48156556-7bd1-41a0-a43e-d98322302fb9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_48156556-7bd1-41a0-a43e-d98322302fb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_e1a353a9-1608-4948-b04e-606ae6584806" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_e1a353a9-1608-4948-b04e-606ae6584806" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_683cf5c6-a1c1-425b-abfd-a8f549f8fb5b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:to="loc_us-gaap_LongTermDebt_683cf5c6-a1c1-425b-abfd-a8f549f8fb5b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_05e452c1-063f-4b98-b51e-c342e27973cf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:to="loc_us-gaap_LongTermDebtCurrent_05e452c1-063f-4b98-b51e-c342e27973cf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_32e653f1-b270-4917-9524-828428c07660" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_32e653f1-b270-4917-9524-828428c07660" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_64ae1808-d4c3-466c-b1de-ebd95042df5e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e1235a0a-6349-4d43-9ac0-265a401c0d27" xlink:to="loc_us-gaap_DebtInstrumentTable_64ae1808-d4c3-466c-b1de-ebd95042df5e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_3a55beb8-e5e3-40ed-924d-f47432c4057a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_64ae1808-d4c3-466c-b1de-ebd95042df5e" xlink:to="loc_us-gaap_DebtInstrumentAxis_3a55beb8-e5e3-40ed-924d-f47432c4057a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_3a55beb8-e5e3-40ed-924d-f47432c4057a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_3a55beb8-e5e3-40ed-924d-f47432c4057a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_3a55beb8-e5e3-40ed-924d-f47432c4057a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_3a55beb8-e5e3-40ed-924d-f47432c4057a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointSixFivePercentNotesDueTwoThousandAndNineteenMember_6e667669-4f21-46a4-905c-9bc32ccc3403" xlink:href="txn-20190930.xsd#txn_FixedOnePointSixFivePercentNotesDueTwoThousandAndNineteenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedOnePointSixFivePercentNotesDueTwoThousandAndNineteenMember_6e667669-4f21-46a4-905c-9bc32ccc3403" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointSevenFivePercentNotesDueTwoThousandAndTwentyMember_78a52c2e-9f21-4702-a4f7-ee2d873e8823" xlink:href="txn-20190930.xsd#txn_FixedOnePointSevenFivePercentNotesDueTwoThousandAndTwentyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedOnePointSevenFivePercentNotesDueTwoThousandAndTwentyMember_78a52c2e-9f21-4702-a4f7-ee2d873e8823" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedTwoPointSevenFivePercentNotesDueTwoThousandAndTwentyOneMember_ed6dcebc-b3a8-4fcb-ba4c-7b9a12d6766f" xlink:href="txn-20190930.xsd#txn_FixedTwoPointSevenFivePercentNotesDueTwoThousandAndTwentyOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedTwoPointSevenFivePercentNotesDueTwoThousandAndTwentyOneMember_ed6dcebc-b3a8-4fcb-ba4c-7b9a12d6766f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointEightFivePercentNotesDueTwoThousandAndTwentyTwoMember_31d3b89e-b747-4280-a74f-b4be9b17a4f2" xlink:href="txn-20190930.xsd#txn_FixedOnePointEightFivePercentNotesDueTwoThousandAndTwentyTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedOnePointEightFivePercentNotesDueTwoThousandAndTwentyTwoMember_31d3b89e-b747-4280-a74f-b4be9b17a4f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedTwoPointTwoFivePercentNotesDueTwoThousandAndTwentyThreeMember_23c4c0b2-dd19-404f-b533-bccf5c52bc5a" xlink:href="txn-20190930.xsd#txn_FixedTwoPointTwoFivePercentNotesDueTwoThousandAndTwentyThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedTwoPointTwoFivePercentNotesDueTwoThousandAndTwentyThreeMember_23c4c0b2-dd19-404f-b533-bccf5c52bc5a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedTwoPointSixTwoFivePercentNotesDueTwoThousandAndTwentyFourMember_87f6a46a-d2f8-404d-acea-6058e9e411d5" xlink:href="txn-20190930.xsd#txn_FixedTwoPointSixTwoFivePercentNotesDueTwoThousandAndTwentyFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedTwoPointSixTwoFivePercentNotesDueTwoThousandAndTwentyFourMember_87f6a46a-d2f8-404d-acea-6058e9e411d5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedTwoPointNineZeroPercentNotesDueTwoThousandAndTwentySevenMember_eda8c65a-ab36-41ae-9968-41030f854351" xlink:href="txn-20190930.xsd#txn_FixedTwoPointNineZeroPercentNotesDueTwoThousandAndTwentySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedTwoPointNineZeroPercentNotesDueTwoThousandAndTwentySevenMember_eda8c65a-ab36-41ae-9968-41030f854351" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedRate225Due2029Member_3d17492a-03e8-4c13-8afa-b6b0ca71e405" xlink:href="txn-20190930.xsd#txn_FixedRate225Due2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedRate225Due2029Member_3d17492a-03e8-4c13-8afa-b6b0ca71e405" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember_48c2676b-c6d8-466a-8b18-5041d68915cd" xlink:href="txn-20190930.xsd#txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember_48c2676b-c6d8-466a-8b18-5041d68915cd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointOneFivePercentNotesDueTwoThousandAndFortyEightMember_9f914d05-d147-47f0-b7d5-5c8cd6adb92b" xlink:href="txn-20190930.xsd#txn_FixedFourPointOneFivePercentNotesDueTwoThousandAndFortyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7dc12c6c-55b6-4025-a056-e31759a6a447" xlink:to="loc_txn_FixedFourPointOneFivePercentNotesDueTwoThousandAndFortyEightMember_9f914d05-d147-47f0-b7d5-5c8cd6adb92b" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/Stockholdersequity" xlink:type="simple" xlink:href="txn-20190930.xsd#Stockholdersequity"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Stockholdersequity" xlink:type="extended" id="i6493a78894634491b0e666a362e9919b_152f1c9e-2de2-4dc7-903e-d8db8d840c60"/>
  <link:roleRef roleURI="http://www.ti.com/role/StockholdersequityTables" xlink:type="simple" xlink:href="txn-20190930.xsd#StockholdersequityTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/StockholdersequityTables" xlink:type="extended" id="i49f45775a0af43a795a1e481d6ae538e_bde0debe-42fe-494b-8fa5-7cb3060dbd1d"/>
  <link:roleRef roleURI="http://www.ti.com/role/StockholdersequityScheduleofChangesinStockholdersEquityDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#StockholdersequityScheduleofChangesinStockholdersEquityDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/StockholdersequityScheduleofChangesinStockholdersEquityDetails" xlink:type="extended" id="iadfccf7c9c0f48f3b42e03a7cc130f6a_47bcc51d-ff09-4970-9e57-204715cc37ff">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_e0126c3f-fc35-453c-b8c7-30972eedb39b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_e0126c3f-fc35-453c-b8c7-30972eedb39b" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_2c79eb52-f2d1-4d12-8a69-2d0aa0c23722" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_StockholdersEquity_2c79eb52-f2d1-4d12-8a69-2d0aa0c23722" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_53f9c513-0f87-4972-a7a0-1d13a5b3b05a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_NetIncomeLoss_53f9c513-0f87-4972-a7a0-1d13a5b3b05a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_29357faf-9ac7-4a26-a9b2-253315617493" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_DividendsCommonStock_29357faf-9ac7-4a26-a9b2-253315617493" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_2c8b1cf9-6eb2-4d0e-bf0c-15abbaa84908" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_2c8b1cf9-6eb2-4d0e-bf0c-15abbaa84908" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_43935622-49e7-47df-b07b-7d7316dd930e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_43935622-49e7-47df-b07b-7d7316dd930e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_481e37ab-2332-4f96-a2d9-2cf0d99c6722" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_481e37ab-2332-4f96-a2d9-2cf0d99c6722" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_49221ac0-ef98-4aeb-995c-fe38e92b0102" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_49221ac0-ef98-4aeb-995c-fe38e92b0102" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsShareBasedCompensationCash_0665bca6-75db-4810-8700-6042dfffc49e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsShareBasedCompensationCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_DividendsShareBasedCompensationCash_0665bca6-75db-4810-8700-6042dfffc49e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_709118b1-1c78-4b91-8920-676d2f2b4b13" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_709118b1-1c78-4b91-8920-676d2f2b4b13" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityOther_0d3c64d3-ac45-41c2-afa7-33e4e684115b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_46bd1350-80a1-4792-9440-c39ab58eecce" xlink:to="loc_us-gaap_StockholdersEquityOther_0d3c64d3-ac45-41c2-afa7-33e4e684115b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_3c4f76ae-66dd-4a89-ad0e-7a229069b3ad" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_89a9675c-c387-4b7b-a34e-07cffdbb00a7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_e0126c3f-fc35-453c-b8c7-30972eedb39b" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_89a9675c-c387-4b7b-a34e-07cffdbb00a7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_bb828100-972c-4586-b96e-0fa65b36879b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_89a9675c-c387-4b7b-a34e-07cffdbb00a7" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_bb828100-972c-4586-b96e-0fa65b36879b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_bb828100-972c-4586-b96e-0fa65b36879b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_bb828100-972c-4586-b96e-0fa65b36879b" xlink:to="loc_us-gaap_EquityComponentDomain_bb828100-972c-4586-b96e-0fa65b36879b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_1743fe4f-5c9c-494e-9fce-27af84564a55" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_bb828100-972c-4586-b96e-0fa65b36879b" xlink:to="loc_us-gaap_EquityComponentDomain_1743fe4f-5c9c-494e-9fce-27af84564a55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_8f44812e-8433-4972-a09a-ba885ab8fd9f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1743fe4f-5c9c-494e-9fce-27af84564a55" xlink:to="loc_us-gaap_CommonStockMember_8f44812e-8433-4972-a09a-ba885ab8fd9f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_6ca266a6-997f-4e6f-b6c4-ba5618fcff4f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1743fe4f-5c9c-494e-9fce-27af84564a55" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_6ca266a6-997f-4e6f-b6c4-ba5618fcff4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_809d7519-a018-4312-aa03-9627cc33d574" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1743fe4f-5c9c-494e-9fce-27af84564a55" xlink:to="loc_us-gaap_RetainedEarningsMember_809d7519-a018-4312-aa03-9627cc33d574" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockMember_b13675dd-f115-4153-8143-07ea67c5d5e3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1743fe4f-5c9c-494e-9fce-27af84564a55" xlink:to="loc_us-gaap_TreasuryStockMember_b13675dd-f115-4153-8143-07ea67c5d5e3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_bb9edcef-4da5-4506-911f-c49e76b2f252" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1743fe4f-5c9c-494e-9fce-27af84564a55" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_bb9edcef-4da5-4506-911f-c49e76b2f252" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/StockholdersequityAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#StockholdersequityAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/StockholdersequityAdditionalInformationDetails" xlink:type="extended" id="i5488a6be15164c99bd19079e694f5fa8_3a9710ea-c6c9-4971-aa69-3e231780f5d8"/>
  <link:roleRef roleURI="http://www.ti.com/role/Leases" xlink:type="simple" xlink:href="txn-20190930.xsd#Leases"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Leases" xlink:type="extended" id="i53c5682bf0a14bafb5779429353838e9_7b6965d9-0fd6-430b-8638-8f0d5f4156af"/>
  <link:roleRef roleURI="http://www.ti.com/role/LeasesTables" xlink:type="simple" xlink:href="txn-20190930.xsd#LeasesTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/LeasesTables" xlink:type="extended" id="i07fb2ae84d3044a2af8fb03e5bd04ae7_a0df22bc-b2d8-4d34-a965-c137dd300169"/>
  <link:roleRef roleURI="http://www.ti.com/role/LeasesComponentofBalanceSheetInformationRelatedtoLeasesDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#LeasesComponentofBalanceSheetInformationRelatedtoLeasesDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/LeasesComponentofBalanceSheetInformationRelatedtoLeasesDetails" xlink:type="extended" id="ic83799f87b9143128d4569790a4c0a11_f754f086-faf1-4c5f-af53-960ea5c1d5f7"/>
  <link:roleRef roleURI="http://www.ti.com/role/LeasesScheduleofOperatingLeasesDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#LeasesScheduleofOperatingLeasesDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/LeasesScheduleofOperatingLeasesDetails" xlink:type="extended" id="i39b7451b18054d94998c7c3c315ffd70_b38a69b5-ed40-418f-bd8f-2ed6ba318ca7"/>
  <link:roleRef roleURI="http://www.ti.com/role/LeasesScheduleofMaturitiesofLeaseLiabilitiesDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#LeasesScheduleofMaturitiesofLeaseLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/LeasesScheduleofMaturitiesofLeaseLiabilitiesDetails" xlink:type="extended" id="ibf70b181e2534685b6fded8077818420_2e4570e6-fdd8-445e-aac5-2b5452232d46"/>
  <link:roleRef roleURI="http://www.ti.com/role/Contingencies" xlink:type="simple" xlink:href="txn-20190930.xsd#Contingencies"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Contingencies" xlink:type="extended" id="i138cb72171d14767a68d6e56538ef4d0_05b5dc5d-257c-4561-b262-514be77a85fa"/>
  <link:roleRef roleURI="http://www.ti.com/role/Supplementalfinancialinformation" xlink:type="simple" xlink:href="txn-20190930.xsd#Supplementalfinancialinformation"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/Supplementalfinancialinformation" xlink:type="extended" id="i7c3ba3a17dad4eaeb14cd355ba4d1e2d_2b76c580-afe5-417c-a189-8b9ed319f498"/>
  <link:roleRef roleURI="http://www.ti.com/role/SupplementalfinancialinformationTables" xlink:type="simple" xlink:href="txn-20190930.xsd#SupplementalfinancialinformationTables"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/SupplementalfinancialinformationTables" xlink:type="extended" id="i5779ea170b334fea8cbf46d3a24a1841_67ec52be-daf7-4afb-b779-73f748b7461e"/>
  <link:roleRef roleURI="http://www.ti.com/role/SupplementalfinancialinformationRestructuringReserveDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#SupplementalfinancialinformationRestructuringReserveDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/SupplementalfinancialinformationRestructuringReserveDetails" xlink:type="extended" id="ie52b0b888391474a8e1423aad2d6aa08_dece8e49-35e7-4216-a102-050593dbfbdf"/>
  <link:roleRef roleURI="http://www.ti.com/role/SupplementalfinancialinformationAmountsReclassifiedoutofAOCIDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#SupplementalfinancialinformationAmountsReclassifiedoutofAOCIDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/SupplementalfinancialinformationAmountsReclassifiedoutofAOCIDetails" xlink:type="extended" id="i99e96f22f7eb4ec4a07ed4a7f9214318_c8083346-7a0d-4f6a-a5ef-2d712870a943">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_795b9eb3-a319-4e76-92af-b79f51da3043" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_10071aec-c7ff-41e1-8ff3-8bd96b1d2ed9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_795b9eb3-a319-4e76-92af-b79f51da3043" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_10071aec-c7ff-41e1-8ff3-8bd96b1d2ed9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_16e88298-4d9f-4f84-8a22-cca119961d46" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_795b9eb3-a319-4e76-92af-b79f51da3043" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_16e88298-4d9f-4f84-8a22-cca119961d46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_3d546da2-1a33-4c4f-a079-904f3393b4fc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_795b9eb3-a319-4e76-92af-b79f51da3043" xlink:to="loc_us-gaap_NetIncomeLoss_3d546da2-1a33-4c4f-a079-904f3393b4fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_d2138b1e-8b00-484a-ad6b-ad7687fcc359" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_795b9eb3-a319-4e76-92af-b79f51da3043" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_d2138b1e-8b00-484a-ad6b-ad7687fcc359" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_3d3a936b-fd5d-4351-99f0-0db2dab916af" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_d2138b1e-8b00-484a-ad6b-ad7687fcc359" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_3d3a936b-fd5d-4351-99f0-0db2dab916af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_3d3a936b-fd5d-4351-99f0-0db2dab916af_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_3d3a936b-fd5d-4351-99f0-0db2dab916af" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_3d3a936b-fd5d-4351-99f0-0db2dab916af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_c2732576-9b85-4a48-b37e-a58dcc17a997" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_3d3a936b-fd5d-4351-99f0-0db2dab916af" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_c2732576-9b85-4a48-b37e-a58dcc17a997" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_ca5f6170-05d6-4f13-947b-c470612af8af" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_c2732576-9b85-4a48-b37e-a58dcc17a997" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_ca5f6170-05d6-4f13-947b-c470612af8af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_e7b37fc8-516c-4b69-9f7e-ace34a49d233" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_d2138b1e-8b00-484a-ad6b-ad7687fcc359" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_e7b37fc8-516c-4b69-9f7e-ace34a49d233" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_e7b37fc8-516c-4b69-9f7e-ace34a49d233_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_e7b37fc8-516c-4b69-9f7e-ace34a49d233" xlink:to="loc_us-gaap_EquityComponentDomain_e7b37fc8-516c-4b69-9f7e-ace34a49d233_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_430dca2b-d322-4852-b83b-99b2b0f1efb2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_e7b37fc8-516c-4b69-9f7e-ace34a49d233" xlink:to="loc_us-gaap_EquityComponentDomain_430dca2b-d322-4852-b83b-99b2b0f1efb2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_db147304-d815-4d04-bd76-79a5839e1a92" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_430dca2b-d322-4852-b83b-99b2b0f1efb2" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_db147304-d815-4d04-bd76-79a5839e1a92" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_40b358ca-848f-437c-975f-8643f0c865ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_430dca2b-d322-4852-b83b-99b2b0f1efb2" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_40b358ca-848f-437c-975f-8643f0c865ff" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/SupplementalfinancialinformationAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20190930.xsd#SupplementalfinancialinformationAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/SupplementalfinancialinformationAdditionalInformationDetails" xlink:type="extended" id="i96b16023a6ed4ca2a685ee01ee951e7b_919b4500-54e0-4c7f-84c2-4cfa40e246bc"/>
</link:linkbase>
