Inverting Octal Tri-state Transceiver

These TRI-STATE bi-directional Buffers MM54HC640 MM74HC640 MM54HC643 MM74HC643 utilize advanced sili- con-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 and high noise immunity usually associated with CMOS circuitry, yet have speeds comparable to low power Schottky TTL circuits. Each device has an active low enable G and a direction control input, DIR. When DIR is high, data flows from the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs. The MM54HC640 MM74HC640 transfers inverted data from one bus to other and the MM54HC643 MM74HC643 transfers inverted data from the A bus to the B bus and true data from the B bus to the A bus. By National Semiconductor Corporation
MM54HC643 's PackagesMM54HC643 's pdf datasheet
MM54HC640
MM74HC640
MM74HC643




MM54HC643 Pinout, Pinouts
MM54HC643 pinout,Pin out
This is one package pinout of MM54HC643,If you need more pinouts please download MM54HC643's pdf datasheet.

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