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1、DesigningWiththeSN54/74LS123SDLA006AMarch19971IMPORTANTNOTICETexasInstruments(TI)reservestherighttomakechangestoitsproductsortodiscontinueanysemiconductorproductorservicewithoutnotice,andadvisesitscustomerstoobtainthelatestversionofrelevantinformationtoverify,beforeplacingorders,thatthei
2、nformationbeingreliedoniscurrent.TIwarrantsperformanceofitssemiconductorproductsandrelatedsoftwaretothespecificationsapplicableatthetimeofsaleinaccordancewithTI’sstandardwarranty.TestingandotherqualitycontroltechniquesareutilizedtotheextentTIdeemsnecessarytosupportthiswarranty.Specificte
3、stingofallparametersofeachdeviceisnotnecessarilyperformed,exceptthosemandatedbygovernmentrequirements.Certainapplicationsusingsemiconductorproductsmayinvolvepotentialrisksofdeath,personalinjury,orseverepropertyorenvironmentaldamage(“CriticalApplications”).TISEMICONDUCTORPRODUCTSARENOTDES
4、IGNED,INTENDED,AUTHORIZED,ORWARRANTEDTOBESUITABLEFORUSEINLIFE-SUPPORTAPPLICATIONS,DEVICESORSYSTEMSOROTHERCRITICALAPPLICATIONS.InclusionofTIproductsinsuchapplicationsisunderstoodtobefullyattheriskofthecustomer.UseofTIproductsinsuchapplicationsrequiresthewrittenapprovalofanappropriateTIoff
5、icer.QuestionsconcerningpotentialriskapplicationsshouldbedirectedtoTIthroughalocalSCsalesoffice.Inordertominimizerisksassociatedwiththecustomer’sapplications,adequatedesignandoperatingsafeguardsshouldbeprovidedbythecustomertominimizeinherentorproceduralhazards.TIassumesnoliabilityforappl
6、icationsassistance,customerproductdesign,softwareperformance,orinfringementofpatentsorservicesdescribedherein.NordoesTIwarrantorrepresentthatanylicense,eitherexpressorimplied,isgrantedunderanypatentright,copyright,maskworkright,orotherintellectualpropertyrightofTIcoveringorrelatingtoanyc
7、ombination,machine,orprocessinwhichsuchsemiconductorproductsorservicesmightbeorareused.Copyrightã1997,TexasInstrumentsIncorporated2ContentsTitlePageIntroduction.......................................................................................1Features................
