The MC74HC253N is identical in pinout to the LS253. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The Address inputs select one of four Data inputs from each multiplexer. Each multiplexer has an active–low Output Enable control and a three–state noninverting output. The MC74HC253N is similar in function to the HC153 which does not have three–state outputs.
Output Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 mA
High Noise Immunity Characteristic of CMOS Devices
16 pin DIP. Manufactured by Motorola.