MC74ACT623DW中文资料
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Octal Bidirectional Transceiver with 3ĆState Outputs
The MC74AC623/74ACT623 octal bus transceiver is designed for asynchronous two-way communication between data buses. The device transmits data from bus A to bus B when T/R = HIGH, or from bus B to bus A when T/R = LOW. The enable input can be used to disable the device so the buses are effectively isolated.•Bidirectional Data Path
•A and B Outputs Sink 24 mA/Source –24 mA •′ACT623 Has TTL Compatible Inputs
V GBA B B B B B B B B GAB
A 0
A 1
A 2
A 3
A 4
A 5
A 6
A 7
GND
PIN NAMES A 0–A 7Side A Inputs or 3-State Outputs GAB Enable B Outputs GBA Enable A Outputs
B 0–B 7
Side B Inputs or 3-State Outputs
H = HIGH Voltage Level L = LOW Voltage Level
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