This document describes the features and characteristics of the 54F�74F157A Quad 2-Input Multiplexer. It is a high-speed quad 2-input multiplexer that can select four bits of data from two sources and output them in non-inverted form.
This document is a technical data sheet for the 'F157A, a high-speed quad 2-input multiplexer manufactured by National Semiconductor. The device allows four bits of data from two sources to be selected using common Select and Enable inputs, presenting the output in true (non-inverted) form.
| Input HIGH Voltage | 2.0 V Min |
|---|---|
| ESD Protection | 4000V Min |
The Enable input is active LOW; when it is HIGH, all outputs are forced LOW regardless of other inputs.
The device selects four bits of data from two different sources under control of Select and Enable inputs.