MC74AC640N ,OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE OUTPUTS* ** ** ** ** OCTAL BIDIRECTIONALTRANSCEIVER WITH* * *3-STATE OUTPUTSThe MC74AC640/74ACT640 octal b ..
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MC74AC646DWR2 ,Octal Transceiver/Register with 3-State Outputs (Non-inverting)http://onsemi.com3MC74AC646, MC74ACT646DC CHARACTERISTICS 74AC 74ACT =AVCCSymbol Parameter T = +25 ..
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MC74AC640N
OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE OUTPUTS
-- -The MC74AC640/74ACT640 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 ′ACT640 Has TTL Compatible Inputs
VCC B0 B1 B2 B3 B4 B5 B6 B7
T/R A0 A1 A2 A3 A4 A5 A6 A7 GND
PIN NAMESA0–A7 Side A Inputs or 3-State Outputs Output Enable Input
T/R Transmit/Receive Input
B0–B7 Side B Inputs or 3-State Outputs
TRUTH TABLEH = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
