Quad 2-Input Data Selectors/Multiplexer

with 3-State Outputs

High-Performance Silicon-Gate CMOS

The IN74HC258A is identical in pinout to the LS/ALS258. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.

This device selects a (4-bit) nibble from either the A or B inputs as determined by the Select input. The nibble is presented at the outputs in inverted form when the Output Enable pin is at a low level. A high level on the Output Enable pin switches the outputs into the high-impedance state.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA

• High Noise Immunity Characteristic of CMOS Devices