SN74LVC2T45-08中文资料

(TOPVIEW)12348765VCCAA1A2GNDVCCBB1B2DIRYZPPACKAGE(BOTTOMVIEW)A1GNDB1DIRA2B2VCCAVCCB28346715A1A2B2C2D2B1C1D1DESCRIPTION/ORDERINGINFORMATIONSN74LVC2T45DUAL-BITDUAL-SUPPLYBUSTRANSCEIVERWITHCONFIGURABLEVOLTAGETRANSLATIONAND3-STATEOUTPUTSSCES516I–DECEMBER2003–REVISEDMARCH2007•AvailableintheTexasInstrumentsNanoFree™Package•FullyConfigurableDual-RailDesignAllowsEachPorttoOperateOvertheFull1.65-Vto5.5-VPower-SupplyRange•VCCIsolationFeature–IfEitherVCCInputIsatGND,BothPortsAreintheHigh-ImpedanceState•DIRInputCircuitReferencedtoVCCA•LowPowerConsumption,10-μAMaxICC•±24-mAOutputDriveat3.3V•IoffSupportsPartial-Power-DownModeOperation•MaxDataRates–420Mbps(3.3-Vto5-VTranslation)–210Mbps(Translateto3.3V)–140Mbps(Translateto2.5V)–75Mbps(Translateto1.8V)•Latch-UpPerformanceExceeds100mAPerJESD78,ClassII•ESDProtectionExceedsJESD22–4000-VHuman-BodyModel(A114-A)–200-VMachineModel(A115-A)–1000-VCharged-DeviceModel(C101)Thisdual-bitnoninvertingbustransceiverusestwoseparateconfigurablepower-supplyrails.TheAportisdesignedtotrackVCCA.VCCAacceptsanysupplyvoltagefrom1.65Vto5.5V.TheBportisdesignedtotrackVCCB.VCCBacceptsanysupplyvoltagefrom1.65Vto5.5V.Thisallowsforuniversallow-voltagebidirectionaltranslationbetweenanyofthe1.8-V,2.5-V,3.3-V,and5-Vvoltagenodes.ORDERINGINFORMATIONTAPACKAGE(1)ORDERABLEPARTNUMBERTOP-SIDEMARKING(2)NanoFree–WCSP(DSBGA)Reelof3000SN74LVC2T45YZPR___TB_0.23-mmLargeBump–YZP(Pb-free)Reelof3000SN74LVC2T45DCTRSSOP–DCTCT2___–40°Cto85°CReelof250SN74LVC2T45DCTTReelof3000SN74LVC2T45DCURVSSOP–DCUCT2_Reelof250SN74LVC2T45DCUT(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTIwebsiteat(2)DCT:Theactualtop-sidemarkinghasthreeadditionalcharactersthatdesignatetheyear,month,andassembly/testsite.DCU:Theactualtop-sidemarkinghasoneadditionalcharacterthatdesignatestheassembly/testsite.YZP:Theactualtop-sidemarkinghasthreeprecedingcharacterstodenoteyear,month,andsequencecode,andonefollowingcharactertodesignatetheassembly/testsite.Pin1identifierindicatessolder-bumpcomposition(1=SnPb,•=Pb-free).Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.NanoFreeisatrademarkofTexasInstruments.PRODUCTIONDATAinformationiscurrentasofpublicationdate.Copyright©2003–2007,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.(CONTINUED)B1DIR57A12VCCAVCCBB26A23SN74LVC2T45DUAL-BITDUAL-SUPPLYBUSTRANSCEIVERWITHCONFIGURABLEVOLTAGETRANSLATIONAND3-STATEOUTPUTSSCES516I–DECEMBER2003–REVISEDMARCH2007TheSN74LVC2T45isdesignedforasynchronouscommunicationbetweentwodatabuses.Thelogiclevelsofthedirection-control(DIR)inputactivateeithertheB-portoutputsortheA-portoutputs.ThedevicetransmitsdatafromtheAbustotheBbuswhentheB-portoutputsareactivated,andfromtheBbustotheAbuswhentheA-portoutputsareactivated.TheinputcircuitryonbothAandBportsalwaysisactiveandmusthavealogicHIGHorLOWlevelappliedtopreventexcessICCandICCZ.TheSN74LVC2T45isdesignedsothattheDIRinputcircuitissuppliedbyVCCA.Thisdeviceisfullyspecifiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.TheVCCisolationfeatureensuresthatifeitherVCCinputisatGND,bothportsareinthehigh-impedancestate.NanoFree™packagetechnologyisamajorbreakthroughinICpackagingconcepts,usingthedieasthepackage.FUNCTIONTABLE(1)(EACHTRANSCEIVER)INPUTOPERATIONDIRLBdatatoAbusHAdatatoBbus(1)InputcircuitsofthedataI/Osalwaysareactive.LOGICDIAGRAM(POSITIVELOGIC)2SubmitDocumentationFeedback(1)SN74LVC2T45DUAL-BITDUAL-SUPPLYBUSTRANSCEIVERWITHCONFIGURABLEVOLTAGETRANSLATIONAND3-STATEOUTPUTSSCES516I–DECEMBER2003–REVISEDMARCH2007overoperatingfree-airtemperaturerange(unlessotherwisenoted)MINMAXUNITVCCASupplyvoltagerange–0.56.5VVCCBVIInputvoltagerange(2)–0.56.5VVOVoltagerangeappliedtoanyoutputinthehigh-impedanceorpower-offstate(2)–0.56.5VAport–0.5VCCA+0.5VOVoltagerangeappliedtoanyoutputinthehighorlowstate(2)(3)VBport–0.5VCCB+0.5IIKInputclampcurrentVI0–50mAIOKOutputclampcurrentVO0–50mAIOContinuousoutputcurrent±50mAContinuouscurrentthroughVCCorGND±100mADCTpackage220θJAPackagethermalimpedance(4)DCUpackage227°C/WYZPpackage102TstgStoragetemperaturerange–65150°C(1)Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.(2)Theinputandoutputnegative-voltageratingsmaybeexceedediftheinputandoutputclamp-currentratingsareobserved.(3)ThevalueofVCCisprovidedintherecommendedoperatingconditio