The TLF9479 is a high-speed dual 1-of-4 decoder-demultiplexer with two independent decoders, each accepting two inputs and providing four mutually exclusive active LOW outputs. Each decoder has an active LOW Enable input which can be used as a data input for a 4-output demultiplexer.
This document is a datasheet for the National Semiconductor 54F/74F139, a high-speed dual 1-of-4 decoder/demultiplexer. The device features two independent decoders, each accepting two inputs and providing four mutually exclusive active LOW outputs. It also includes an active LOW Enable input that can function as a data input for a 4-output demultiplexer.
| Product Type | Dual 1-of-4 Decoder/Demultiplexer |
|---|---|
| Outputs | Four mutually exclusive active LOW outputs |
| Enable Input | Active LOW Enable input |
| ESD Protection | 4000V minimum |
The Enable input is active LOW; when HIGH, all outputs are forced HIGH, and it can be used as a data input for a demultiplexer.
The device provides guaranteed 4000V minimum ESD protection.