MC74AC139, MC74ACT139
Dual 1−of−4
Decoder/Demultiplexer
The MC74AC139/74ACT139 is a high−speed, dual 1−of−4
decoder/demultiplexer. The device has two independent decoders,
each accepting two inputs and providing four mutually−exclusive
active−LOW outputs. Each decoder has an active−LOW Enable input
which can be used as a data input for a 4−output demultiplexer. Each
half of the MC74AC139/74ACT139 can be used as a function
generator providing four minterms of two variables.
http://onsemi.com
DIP−16
N SUFFIX
CASE 648
• Multifunctional Capability
16
• Two Completely Independent 1−of−4 Decoders
• Active LOW Mutually Exclusive Outputs
• Outputs Source/Sink 24 mA
1
SO−16
• ′ACT139 Has TTL Compatible Inputs
D SUFFIX
CASE 751B
16
w These devices are available in Pb−free package(s). Specifications herein
apply to both standard and Pb−free devices. Please see our website at
www.onsemi.com for specific Pb−free orderable part numbers, or
contact your local ON Semiconductor sales office or representative.
1
TSSOP−16
DT SUFFIX
CASE 948F
V
CC
E
b
A
0b
A
1b
O
0b
O
1b
O
O
3b
2b
16
16
15
14
13
12
11
10
9
1
EIAJ−16
M SUFFIX
CASE 966
16
1
1
2
3
4
5
6
7
8
ORDERING INFORMATION
E
a
A
0a
A
1a
O
0a
O
1a
O
2a
O
3a
GND
Device
Package
Shipping
Figure 1. Pinout: 16−Lead Packages Conductors
MC74AC139N
MC74ACT139N
MC74AC139D
MC74ACT139D
MC74AC139DR2
25 Units/Rail
25 Units/Rail
PDIP−16
PDIP−16
SOIC−16
(Top View)
PIN ASSIGNMENT
48 Units/Rail
PIN
FUNCTION
Address Inputs
Enable Inputs
Outputs
48 Units/Rail
SOIC−16
SOIC−16
A , A
0
1
2500 Tape & Reel
E
MC74ACT139DR2
MC74AC139DT
2500 Tape & Reel
96 Units/Rail
SOIC−16
O −O
0
3
TSSOP−16
MC74ACT139DT
96 Units/Rail
TSSOP−16
TRUTH TABLE
Inputs
MC74AC139DTR2
MC74AC139M
2500 Tape & Reel
50 Units/Rail
TSSOP−16
EIAJ−16
Outputs
E
A
0
A
1
O
O
O
O
3
0
1
2
50 Units/Rail
MC74ACT139M
MC74AC139MEL
MC74ACT139MEL
EIAJ−16
EIAJ−16
EIAJ−16
H
L
L
L
L
X
X
L
L
H
H
H
H
H
H
2000 Tape & Reel
2000 Tape & Reel
L
H
L
L
H
H
H
H
L
H
H
H
H
L
H
H
H
L
H
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 6 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
1
Publication Order Number:
March, 2006 − Rev. 7
MC74AC139/D