MC74HC242 Datasheet (Motorola) - Quad 3-State Bus Transceiver

MC74HC242, Quad 3-State Bus Transceiver

DATA PORTS A1 *A4 (Pins 3,4,5,6) and B1 *B4 (Pins 11,10,9,8) Data on these pins may be transferred between data buses.

Depending upon the states of the Output Enables, these pins may be inputs, outputs or open circuits (high *impedance).

CONTROL INPUTS A *to *B En

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Quad 3-State Bus Transceiver High Performance Silicon Gate CMOS The MC74HC242 is identical in pinout to the LS242.

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

This quad bus transceiver is designed for asynchronous two way communications between data buses.

The states of the Output Enables (A to B Enable and B to A Enable)