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MC74HC139A
ADDRESS
INPUTS
SELECTa
1
16
2
15
3
14
A0b
Y0a
4
13
A1b
Y1a
5
12
Y0b
Y2a
6
11
Y1b
Y3a
7
10
Y2b
GND
8
9
Y3b
5
SELECTb
A1a
4
3
A1a
VCC
A0a
2
A0a
6
7
A0b
A1b
Y2a
14
12
13
11
9
Figure 1. Pin Assignment
ACTIVE−LOW
OUTPUTS
Y3a
PIN 16 = VCC
PIN 8 = GND
10
SELECTb
Y1a
1
SELECTa
ADDRESS
INPUTS
Y0a
Y0b
Y1b
Y2b
ACTIVE−LOW
OUTPUTS
Y3b
15
Figure 2. Logic Diagram
FUNCTION TABLE
Inputs
Outputs
Select
A1
A0
Y0
Y1 Y2
Y3
H
L
L
L
L
X
L
L
H
H
X
L
H
L
H
H
L
H
H
H
H
H
L
H
H
H
H
H
H
L
H
H
H
L
H
X = don’t care
ORDERING INFORMATION
Package
Shipping †
MC74HC139AN
PDIP−16
2000 Units / Box
MC74HC139ANG
PDIP−16
(Pb−Free)
2000 Units / Box
MC74HC139AD
SOIC−16
48 Units / Rail
MC74HC139ADG
SOIC−16
(Pb−Free)
48 Units / Rail
MC74HC139ADR2
SOIC−16
2500 Units / Reel
MC74HC139ADR2G
SOIC−16
(Pb−Free)
2500 Units / Reel
MC74HC139ADTR2
TSSOP−16*
2500 Units / Reel
MC74HC139ADTR2G
TSSOP−16*
2500 Units / Reel
MC74HC139AFEL
SOEIAJ−16
2000 Units / Reel
MC74HC139AFELG
SOEIAJ−16
(Pb−Free)
2000 Units / Reel
Device
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
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