Reduce Scrapping and Smelting, Promote Component Reuse > Complete Machines
> 1980 2000
> Cook County
> Qty 10 * 74HC139 74HC139D dual 2-to-4 line decoder smd
Qty 10 * 74HC139 74HC139D dual 2-to-4 line decoder smd
Two independent 2-to-4 decoders
The 74HC/HCT139 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). It is specified in compliance with JEDEC
standard no. 7A. The 74HC/HCT139 are high-speed, dual 2-to-4 line decoder/multiplexers. This device has two independent
decoders, each accepting two binary weighted inputs (nA0 and nA1) and providing four mutually exclusive active LOW outputs (nY0 to nY3). Each decoder has an active LOW enable input (nE). When nE is HIGH, every output is forced HIGH. The enable can be used as the data input for a 1-to-4 demultiplexer application. The 139 is identical to the HEF4556 of the HE4000B family.
