www.德州仪器.com
描述/orderinginformation(持续)
B
DIR
5
4
一个
3
V
CCA
V
CCB
SN74AVC1T45
单独的-bitdual-supplybustransceiver
withconfigurablevoltagetranslationand3-stateoutputs
SCES530D–DECEMBER2003–REVISEDNOVEMBER2005
thesn74avc1t45isdesignedforasynchronouscommunicationbetweentwodatabuses.thelogiclevelsof
thedirection-控制(dir)inputactivateeithertheb-portoutputsorthea-portoutputs.thedevicetransmitsdata
fromtheabustothebbuswhentheb-portoutputsareactivatedandfromthebbustotheabuswhenthe
一个-portoutputsareactivated.theinputcircuitryonbothaandbportsalwaysisactiveandmusthavealogic
HIGHorLOWlevelappliedtopreventexcessI
CC
andI
CCZ
.
TheSN74AVC1T45isdesignedsothattheDIRinputispoweredbyV
CCA
.
thisdeviceisfullyspecifiedforpartial-电源-downapplicationsusingi
止
.thei
止
circuitrydisablestheoutputs,
preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.
TheV
CC
isolationfeatureensuresthatifeitherV
CC
inputisatgnd,thenbothportsareinthehigh-阻抗
状态.
nanostar™andnanofree™packagetechnologyisamajorbreakthroughinicpackagingconcepts,usingthe
dieasthepackage.
FUNCTIONTABLE
(1)
输入
运作
DIR
LBdatatoAbus
HAdatatoBbus
(1)inputcircuitsofthedatai/os
alwaysareactive.
logicdiagram(positivelogic)
2
: 点此下载
