74AHC138 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
74AHC138 Datasheet PDF : 16 Pages
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Philips Semiconductors
3-to-8 line decoder/demultiplexer; inverting
Product specification
74AHC138;
74AHCT138
handbook, halfpage
A0 1
A1 2
A2 3
E1 4
E2 5
E3 6
Y7 7
GND 8
16 VCC
15 Y0
14 Y1
13 Y2
138
12 Y3
11 Y4
10 Y5
9 Y6
MNA369
Fig.1 Pin configuration.
handbook, halfpage
1
2
3
4 E1
5 E2
6 E3
A0
Y0
15
A1
Y1
14
A2
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
MNA370
Fig.2 Logic symbol.
handbook, halfpage DX
15
0
1
0
14
1
2
G
0
7
2
13
3
12
2
3
11
4
4
&
10
5
5
9
6
6
7
7
(a)
X/Y
15
0
1
1
14
1
2
2
13
2
3
4
12
3
11
4
4
&
10
5
5
9
6
6
EN
7
7
MNA371
(b)
handbook, halfpage
1 A0
2 A1
3 A2
3-to-8
DECODER
ENABLE
EXITING
4 E1
5 E2
6 E3
Y0 15
Y1 14
Y2 13
Y3 12
Y4 11
Y5 10
Y6 9
Y7 7
MNA372
Fig.3 IEC logic symbol.
1999 Sep 27
Fig.4 Functional diagram.
4
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