SN74AVC32T245中文资料


  





SCES553C−MAY2004−REVISEDAPRIL20051POSTOFFICEBOX655303•DALLAS,TEXAS75265
MemberoftheTexasInstrumentsWidebus+Family
ControlInputsVIH/VILLevelsAreReferencedtoVCCAVoltage
VCCIsolationFeature−IfEitherVCCInputIsatGND,BothPortsAreintheHigh-ImpedanceState
Overvoltage-TolerantInputs/OutputsAllowMixed-Voltage-ModeDataCommunications
FullyConfigurableDual-RailDesignAllowsEachPorttoOperateOvertheFull1.2-Vto3.6-VPower-SupplyRange
IoffSupportsPartial-Power-DownModeOperation
I/OsAre4.6-VTolerant
Latch-UpPerformanceExceeds100mAPerJESD78,ClassII
ESDProtectionExceedsJESD22−8000-VHuman-BodyModel(A114-A)−200-VMachineModel(A115-A)−1000-VCharged-DeviceModel(C101)description/orderinginformationThis32-bitnoninvertingbustransceiverusestwoseparateconfigurablepower-supplyrails.TheSN74AVC32T245isoptimizedtooperatewithVCCA/VCCBsetat1.4Vto3.6V.ItisoperationalwithVCCA/VCCBaslowas1.2V.TheAportisdesignedtotrackVCCA.VCCAacceptsanysupplyvoltagefrom1.2Vto3.6V.TheBportisdesignedtotrackVCCB.VCCBacceptsanysupplyvoltagefrom1.2Vto3.6V.Thisallowsforuniversallow-voltagebidirectionaltranslationbetweenanyofthe1.2-V,1.5-V,1.8-V,2.5-V,and3.3-Vvoltagenodes.TheSN74AVC32T245isdesignedforasynchronouscommunicationbetweendatabuses.ThedevicetransmitsdatafromtheAbustotheBbusorfromtheBbustotheAbus,dependingonthelogiclevelatthedirection-control(DIR)input.Theoutput-enable(OE)inputcanbeusedtodisabletheoutputssothebusesareeffectivelyisolated.TheSN74AVC32T245isdesignedsothatthecontrolpins(1DIR,2DIR,3DIR,4DIR,1OE,2OE,3OE,and4OE)aresuppliedbyVCCA.Thisdeviceisfullyspecifiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.TheVCCisolationfeatureensuresthatifeitherVCCinputisatGND,thenbothportsareinthehigh-impedancestate.Toensurethehigh-impedancestateduringpoweruporpowerdown,OEshouldbetiedtoVCCthroughapullupresistor;theminimumvalueoftheresistorisdeterminedbythecurrent-sinkingcapabilityofthedriver.ORDERINGINFORMATIONTAPACKAGE†ORDERABLEPARTNUMBERTOP-SIDEMARKING−40°Cto85°CLFBGA−GKETapeandreelSN74AVC32T245GKERWF245−40°Cto85°CLFBGA−ZKE(Pb-free)TapeandreelSN74AVC32T245ZKERWF245†Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesareavailableat2005,TexasInstrumentsIncorporatedPleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.Widebus+isatrademarkofTexasInstruments.!#$%&'#$(&)*%#+#',+&%#$%!#$('%%#$('#-'#'!$'.$$#&!'#$$#++/#0,+&%#(%'$$1+'$#'%'$$*0%*&+'#'$#1**(!'#'$,
  





SCES553C−MAY2004−REVISEDAPRIL20052POSTOFFICEBOX655303•DALLAS,TEXAS75265terminalassignments123456A1B21B11DIR1OE1A11A2B1B41B3GNDGND1A31A4C1B61B5VCCBVCCA1A51A6D1B81B7GNDGND1A71A8E2B22B1GNDGND2A12A2F2B42B3VCCBVCCA2A32A4G2B62B5GNDGND2A52A6H2B72B82DIR2OE2A82A7J3B23B13DIR3OE3A13A2K3B43B3GNDGND3A33A4L3B63B5VCCBVCCA3A53A6M3B83B7GNDGND3A73A8N4B24B1GNDGND4A14A2P4B44B3VCCBVCCA4A34A4R4B64B5GNDGND4A54A6T4B74B84DIR4OE4A84A7FUNCTIONTABLE(each8-bitsection)INPUTSOPERATIONOEDIROPERATIONLLBdatatoAbusLHAdatatoBbusHXIsolationGKEORZKEPACKAGE(TOPVIEW)JHGFEDCBA213465PNMLKTR
  





SCES553C−MAY2004−REVISEDAPRIL20053POSTOFFICEBOX655303•DALLAS,TEXAS75265logicdiagram(positivelogic)ToSevenOtherChannels1DIR1A11B11OEToSevenOtherChannels2DIR2A12B12OEA3A5H3E5A4A2H4E2ToSevenOtherChannels3DIR3A13B13OEToSevenOtherChannels4DIR4A14B14OEJ3J5T3N5J4J2T4N2
  





SCES553C−MAY2004−REVISEDAPRIL20054POSTOFFICEBOX655303•DALLAS,TEXAS75265absolutemaximumratingsoveroperatingfree-airtemperaturerange(unlessotherwisenoted)†Supplyvoltagerange,VCCAandVCCB−0.5Vto4.6V..............................................Inputvoltagerange,VI(seeNote1):I/Oports(Aport)−0.5Vto4.6V.................................I/Oports(Bport)−0.5Vto4.6V.................................Controlinputs−0.5Vto4.6V...................................Voltagerangeappliedtoanyoutputinthehigh-impedanceorpower-offstate,VO(seeNote1):Aport−0.5Vto4.6V............................................................Bport−0.5Vto4.6V............................................................Voltagerangeappliedtoanyoutputinthehighorlowstate,VO(seeNotes1and2):Aport−0.5VtoVCCA+0.5V..............................................Bport−0.5VtoVCCB+0.5V..............................................Inputclampcurrent,IIK(VI0)−50mA...........................................................Outputclampcurrent,IOK(VO0)−50mA........................................................Continuousoutputcurrent,IO±50mA.............................................