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74AHC138 View Datasheet(PDF) - Philips Electronics

Part Name
Description
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74AHC138 Datasheet PDF : 16 Pages
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Philips Semiconductors
3-to-8 line decoder/demultiplexer; inverting
Product specification
74AHC138;
74AHCT138
FUNCTION TABLE
See note 1.
INPUT
OUTPUT
E1
E2
E3
A0
A1
A2
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
X
X
X
X
X
H
H
H
H
H
H
H
H
X
H
X
X
X
X
H
H
H
H
H
H
H
H
X
X
L
X
X
X
H
H
H
H
H
H
H
H
L
L
H
L
L
L
L
H
H
H
H
H
H
H
L
L
H
H
L
L
H
L
H
H
H
H
H
H
L
L
H
L
H
L
H
H
L
H
H
H
H
H
L
L
H
H
H
L
H
H
H
L
H
H
H
H
L
L
H
L
L
H
H
H
H
H
L
H
H
H
L
L
H
H
L
H
H
H
H
H
H
L
H
H
L
L
H
L
H
H
H
H
H
H
H
H
L
H
L
L
H
H
H
H
H
H
H
H
H
H
H
L
Note
1. H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
ORDERING INFORMATION
OUTSIDE NORTH
AMERICA
74AHC138D
74AHC138PW
74AHCT138D
74AHCT138PW
NORTH AMERICA
74AHC138D
74AHC138PW DH
74AHCT138D
74AHCT138PW DH
PINS
16
16
16
16
PACKAGES
PACKAGE MATERIAL
SO
TSSOP
SO
TSSOP
plastic
plastic
plastic
plastic
CODE
SOT109-1
SOT403-1
SOT109-1
SOT403-1
PINNING
PIN
1, 2 and 3
4 and 5
6
7, 9, 10 11, 12, 13, 14 and 15
8
16
SYMBOL
A0, A1 and A2
E1 and E2
E3
Y7 to Y0
GND
VCC
DESCRIPTION
address inputs
enable inputs (active LOW)
enable input (active HIGH)
outputs (active LOW)
ground (0 V)
DC supply voltage
1999 Sep 27
3
 

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