74AHCT138S16 datasheet(2/9 Pages) DIODES

Part #	74AHCT138S16

Description	3 TO 8 LINE DECODER DEMULTIPLEXER

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Manufacturer	DIODES [Diodes Incorporated]

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2 / 9 page

74AHCT138

Document number: DS35483 Rev. 2 - 2

2 of 9

www.diodes.com

June 2013

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

H

X

H

X

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

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74AHCT138S16 Datasheet(PDF) 2 Page - Diodes Incorporated

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