74HC139 Datasheet, PDF (4/7 Pages) NXP Semiconductors – Dual 2-to-4 line decoder/demultiplexer

Philips Semiconductors
Dual 2-to-4 line decoder/demultiplexer
Product specification
74HC/HCT139
Fig.4 Functional diagram.
FUNCTION TABLE
nE
H
L
L
L
L
INPUTS
nA₀ nA₁
X
X
L
L
H
L
L
H
H
H
nY₀
H
L
H
H
H
OUTPUTS
nY₁ nY₂
H
H
H
H
L
H
H
L
H
H
nY₃
H
H
H
H
L
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
Fig.5 Logic diagram (one decoder/demultiplexer).
September 1993
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