SN74AHCT138Q-Q1 Datasheet, PDF (2/12 Pages) Texas Instruments – 3-LINE TO 8-LINE DECODER/DEMULTIPLEXER

SN74AHCT138QĆQ1
3ĆLINE TO 8ĆLINE DECODER/DEMULTIPLEXER
SGDS022A − FEBRUARY 2002 − REVISED APRIL 2008
FUNCTION TABLE
ENABLE INPUTS
SELECT INPUTS
OUTPUTS
G1 G2A G2B C
B
A
Y0 Y1 Y2 Y3 Y4 Y5 Y6
X
H
X
X
X
X
H
H
H
H
H
H
H
X
X
H
X
X
X
H
H
H
H
H
H
H
L
X
X
X
X
X
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
H
H
H
H
H
L
L
L
L
H
H
L
H
H
H
H
H
H
L
L
L
H
L
H
H
L
H
H
H
H
H
L
L
L
H
H
H
H
H
L
H
H
H
H
L
L
H
L
L
H
H
H
H
L
H
H
H
L
L
H
L
H
H
H
H
H
H
L
H
H
L
L
H
H
L
H
H
H
H
H
H
L
H
L
L
H
H
H
H
H
H
H
H
H
H
logic symbols (alternatives)^†
1
A
2
B
3
C
6
G1
4
G2A
5
G2B
BIN/OCT
1
0
2
1
4
2
3
&
4
EN
5
6
7
15
Y0
14
Y1
13
Y2
12
Y3
11
Y4
10
Y5
9
Y6
7
Y7
1
A
2
B
3
C
6
G1
4
G2A
5
G2B
DMUX
0
0
G
0
7
1
2
2
3
&
4
5
6
7
† _{These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.}
Y7
H
H
H
H
H
H
H
H
H
H
L
15
Y0
14
Y1
13
Y2
12
Y3
11
Y4
10
Y5
9
Y6
7
Y7
2
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