Download the 74643 datasheet PDF.
This datasheet also covers the 74640 variant, as both devices belong to the same true-inverting octal tri-state transceiver family and are provided as variant models within a single manufacturer datasheet.
General Description
These TRI-STATE bi-directional transceivers utilize advanced silicon-gate CMOS technology and are intended for two-way asynchronous communication between data buses They have high drive current outputs which enable high speed operation even when driving large bus capacitances These circuits possess
Key Features
Y TTL input compatible
Y Octal TRI-STATE outputs for mP bus.
al TRI-STATE Transceiver February 1988 MM54HCT640 MM74HCT640 Inverting Octal TRI-STATE Transceiver MM54HCT643 MM74HCT643 True-Inverting Octal TRI-STATE Transceiver General Description These TRI-STATE bi-directional transceivers utilize advanced silicon-gate CMOS technology and are intended for two-way asynchronous communication between data buses They have high drive current outputs which enable high speed operation even when driving large bus capacitances These circuits possess the low power consumption of CMOS circuitry yet have speeds comparable to low power Schottky TTL circuits All devices are TTL input compatible and
More Datasheets from National Semiconductor (now Texas Instruments)
74643 Datasheet
