M54HCT139 - ST Microelectronics

M54HCT139 DUAL 2 TO 4 DECODER/DEMULTIPLEXER

The M54/74HCT139 is a high speed CMOS DUAL TWO LINE TO FOUR LINE DECODER/DEMULTIPLEXER fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. The active low enable input can be used for gating or as a data input for demultiplexing applications. While the enable input is held.

Features

scharge and transient excess volt-age.This integrated circuit has input and output characteristics that are fully compatible with 54/74 LSTTL logic families. M54/74HCT devices are designed to directly interface HSC2MOS systems with TTL and NMOS components. They are also plug in replacements for ORDER CODES : M54HCT139F1R M74HCT139M1R M74HCT139B1R M74HCT139C1R PIN CONNECTIONS (top view) INPUT AND OUTPUT EQUIVALENT CIRCUIT NC = No Internal Connection February 1993 1/9 M54/M74HCT139 TRUTH TABLE INPUTS ENABLE SELECT G B A H X X L L L L L H L H L L H H OUTPUTS Y0 H L H H H Y1 H H L H H Y2 H .