MC74HC640A Datasheet (Motorola) - Octal 3-State Inverting Bus Transeceiver

MC74HC640A, Octal 3-State Inverting Bus Transeceiver

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Octal 3-State Inverting Bus Transceiver High Performance Silicon Gate CMOS The MC54/74HC640A is identical in pinout to the LS640.

The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.

The HC640A is a 3 state transceiver that is used for 2 way asynchronous communication between data buses.

The device has an active low Output Enable pin, which is use