Quad 2 Input Data Selector/Multiplexer
High–Performance Silicon–Gate CMOS

The MC74HC158A is identical in pinout to the LS158. The device inputs are compatible with Standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.
These devices route 2 nibbles (A or B) to a single port (Y) as determined by the Select input. The data is presented at the outputs in inverted form for the HC158A. A high level on the Output Enable input sets all four Y outputs to a high level for the HC158A.

• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS and TTL
• Operating Voltage Range: 2 to 6V
• Low Input Current: 1µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance With the JEDEC Standard No. 7A Requirements
• Chip Complexity: 74 FETs or 18.5 Equivalent Gates