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MC74ACT643

Motorola
Part Number MC74ACT643
Manufacturer Motorola
Description OCTAL BIDIRECTIONAL TRANSCEIVER
Published Oct 14, 2006
Detailed Description www.DataSheet4U.com MC74AC643 MC74ACT643 Octal Bidirectional Transceiver with 3ĆState Outputs The MC74AC643/74ACT643 oc...
Datasheet PDF File MC74ACT643 PDF File

MC74ACT643
MC74ACT643

Overview
www.
DataSheet4U.
com MC74AC643 MC74ACT643 Octal Bidirectional Transceiver with 3ĆState Outputs The MC74AC643/74ACT643 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 • ′ACT643 Has TTL Compatible Inputs N SUFFIX CASE 738-03 PLASTIC OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE OUTPUTS VCC 20 OE 19 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 1 T/R 2 A0 3 A1 4 A2 5 A3 6 A4 7 A5 8 A6 9 A7 10 GND DW SUFFIX CASE 751D-04 PLASTIC PIN NAMES A0–A7 OE T/R B0–B7 Side A Inputs or 3-State Outputs Output Enable Input Transmit/Receive Input Side B Inputs or 3-State Outputs TRUTH TABLE OE H L L L L T/R X H H L L Applied Inputs X H L H L Valid Direction I/P→O/P X A to B A to B...


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