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74AHCT138 Datasheet(PDF) 2 Page - Diodes Incorporated

Part No. 74AHCT138
Description  3 TO 8 LINE DECODER DEMULTIPLEXER
Download  9 Pages
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Maker  DIODES [Diodes Incorporated]
Homepage  http://www.diodes.com
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74AHCT138 Datasheet(HTML) 2 Page - Diodes Incorporated

   
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74AHCT138
Document number: DS35483 Rev. 2 - 2
2 of 9
www.diodes.com
June 2013
© Diodes Incorporated
74AHCT138
Pin Descriptions
Pin Number
Pin Name
Description
1
A0
Address Input 0
2
A1
Address Input 1
3
A2
Address Input 2
4
E1
Enable Input 1 (active LOW)
5
E2
Enable Input 2 (active LOW)
6
E3
Enable Input 3 (active HIGH)
7
Y7
Output 7 (active LOW)
8
GND
Ground
9
Y6
Output 6 (active LOW)
10
Y5
Output 5 (active LOW)
11
Y4
Output 4 (active LOW)
12
Y3
Output 3 (active LOW)
13
Y2
Output 2 (active LOW)
14
Y1
Output 1 (active LOW)
15
Y0
Output o (active LOW)
16
VCC
Supply Voltage
Function Table Diagram
Control
Input
Output
E1
E2
E3
A2
A1
A0
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
H
X
X
X
X
X
H
H
H
H
H
H
H
H
X
H
X
X
X
L
L
L
H
L
L
L
H
H
H
H
H
H
H
L
L
L
H
H
H
H
H
H
H
L
H
L
H
L
H
H
H
H
H
L
H
H
L
H
H
H
H
H
H
L
H
H
H
H
L
L
H
H
H
L
H
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
H
L
H
L
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H


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