74HC139 datasheet, decoder/demultiplexer equivalent, NXP

74HC139 decoder/demultiplexer equivalent, dual 2-to-4 line decoder/demultiplexer.

Features and benefits

* Input levels:
* For 74HC139: CMOS level
* For 74HCT139: TTL level
* Demultiplexing capability
* 2 independent 2-to-4 decoders
* Multifunction ca.

Description

The 74HC139; 74HCT139 decodes two binary weighted address inputs (nA0, nA1) to four mutually exclusive outputs (nY0 to nY3). Each decoder features an enable input (nE). When nE is HIGH all outputs are forced HIGH. The enable input can be used as the.

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