The 74HC/HCT157 are high-speed Si-gate CMOS devices with non-inverting data path. The device has standard output capability and belongs to the MSI category.
This document is a product specification datasheet for the Philips 74HC/HCT157, a high-speed Si-gate CMOS device. The chip functions as a quad 2-input multiplexer, selecting 4 bits of data from two sources under the control of a common data select input. It is pin compatible with low power Schottky TTL (LSTTL) and specified in compliance with JEDEC standard no. 7A.
| Device Type | Quad 2-input multiplexer |
|---|---|
| Technology | high-speed Si-gate CMOS |
| TTL Compatibility | low power Schottky TTL (LSTTL) |
| Standard Compliance | JEDEC standard no. 7A |
| Output Capability | standard |
| IC Category | MSI |
| Enable Input | active LOW |
When E is HIGH, all of the outputs (1Y to 4Y) are forced LOW regardless of all other input conditions.
It has eight data inputs, divided into two groups of four (1I1 to 4I1 and 1I2 to 4I2).