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74AHC138 Datasheet(PDF) 3 Page - NXP Semiconductors

Part No. 74AHC138
Description  3-to-8 line decoder/demultiplexer; inverting
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo 

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




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