
Connection Diagram
Logic Symbol
IEEE/IEC
Pin Description
Pin Names
Description
OE
Output Enable Input
T/R
Transmit/Receive Input
A0–A7
B0–B7
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Truth Table
Inputs
OE
T/R
L
L
L
H
H
X
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
HIGH-Z State
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
©1997 Fairchild Semiconductor Corporation
74VHCT245A Rev. 1.3
2
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