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特点
应用程序
描述
SN75LVDT1422
SLLS653–JUNE2005
14-bitfullduplexserializer/解串器
•
IntegratedTerminationResistor
•
10MHzto100MHzShiftClockSupport
•
SupportsSpreadSpectrumClocking
•
175mbytes/secintx/rxmodes
•
64-pintqfppackage(pag)
•
reducescablesize,成本,andsystememi
•
BidirectionalDataCommunication
•
FlashMemoryCards
•
totalpower&指示灯;360mwtypat100-mhzworst
•
PlainPaperCopiers
CasePattern
•
打印机
•
电源-downmode:&指示灯;500µwtyp
•
NoExternalComponentsRequiredforPLL
•
InputsandOutputsCompatiblewith
tia/eia-644lvdsstandard
•
esdrating>5kv(hbm)
thesn75lvdt1422fullduplexserializer/deserializerincorporatesa14-bitserializeranda14-bitdeserializer.
operationoftheserializerisindependentoftheoperationofthedeserializer.the14-bitserializeraccepts14
ttlinputlinesandgenerates2lvdshigh-speedserialstreamsplusonelvdsclocksignal.the14-有点
deserializeraccepts3lvdsinputsignals(2high-speedserialstreamsandonelvdsclocksignal)anddrives
out14ttldatasignalsplusonettlclock.
theserializerloads14databitsintoregistersupontherisingorfallingedgeoftheinputclocksignal(clkin).
risingorfallingedgeoperationcanbeselectedviather/fselectpinforthetransmitteronly.thefrequencyof
clkinismultipliedseventimesandthenusedtounloadthedataregistersin7-bitslices.thetwohigh-速度
serialstreamsandaphase-lockedclock(tclk
±
)arethenoutputtolvdsoutputdrivers.thefrequencyof
TCLK
±
isthesameastheinputclock,clkin.
thedeserializeracceptsdataontwohigh-speedlvdsdatalines.高-speeddataisreceivedandloadedinto
registersattherateseventimesthelvdsinputclock(rclk
±
).thedataisthenunloadedtoa14-bitwide
LVTTLparallelbusattheRCLK
±
费率.thesn75lvdt1422presentsvaliddataonthefallingedgeoftheoutput
时钟(clkout).
thesn75lvdt1422providesthreeterminationresistorsforthedifferentiallvdsinputsthusminimizingcost,
andboardspace,whileprovidingbetteroverallsignalintegrity(si).thedatabusappearsthesameattheinput
tothetransmitterandoutputofthereceiverwiththedatatransmissiontransparenttotheuser(s).theonlyuser
interventionsareasfollows:
possibleuseofthetxenableandrxenablefeature.boththetxandrxenablecircuitsare
活动-highinputsthatindependentlyenabletheserializeranddeserializer.whentxisdisabled,thelvds
outputsgotohighimpedance.whenrxisdisabled,thettloutputsgotoaknownlowstate.
thesn75lvdt1422ischaracterizedforoperationoverthefree-airtemperaturerangeof–10
°
Cto70
°
c.
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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