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描述/orderinginformation(持续)
1A
1OE
SW
1B
2A
2OE
SW
2B
2
1
5
7
3
6
一个
EN
(1)
B
(1) en 是 这 内部的 使能 信号 应用 至 这 转变.
承担
打气
V
CC
SN74CB3Q3305
DUALFETBUSSWITCH
2.5-v/3.3-vlow-voltagehigh-bandwidthbusswitch
SCDS141A–OCTOBER2003–REVISEDAPRIL2005
thisdeviceisfullyspecifiedforpartial-电源-downapplicationsusingi
止
.thei
止
circuitrypreventsdamaging
currentbackflowthroughthedevicewhenitispowereddown.thedevicehasisolationduringpoweroff.
toensurethehigh-impedancestateduringpoweruporpowerdown,oeshouldbetiedtogndthrougha
pulldownresistor;theminimumvalueoftheresistorisdeterminedbythecurrent-sourcingcapabilityofthedriver.
FUNCTIONTABLE
(eachbusswitch)
inputinput/输出
函数
OEA
HBAport=Bport
LZDisconnect
logicdiagram(positivelogic)
simplifiedschematic,eachfetswitch(sw)
2