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.
•
•
•
•
•
w
Multifunctional Capability
Two Completely Independent 1−of−4 Decoders
Active LOW Mutually Exclusive Outputs
Outputs Source/Sink 24 mA
′ACT139 Has TTL Compatible Inputs
Eb
A0b
A1b
O0b
O1b
O2b
1
O3b
16
15
14
13
12
11
10
DIP−16
N SUFFIX
CASE 648
16
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.
VCC
http://onsemi.com
9
16
16
16
1
Ea
2
A0a
3
A1a
4
O0a
5
O1a
6
O2a
7
O3a
1
8
GND
1
1
SO−16
D SUFFIX
CASE 751B
TSSOP−16
DT SUFFIX
CASE 948F
EIAJ−16
M SUFFIX
CASE 966
ORDERING INFORMATION
Device
Package
Shipping
MC74AC139N
PDIP−16
25 Units/Rail
MC74ACT139N
PDIP−16
25 Units/Rail
PIN ASSIGNMENT
MC74AC139D
SOIC−16
48 Units/Rail
PIN
FUNCTION
MC74ACT139D
SOIC−16
48 Units/Rail
A0, A1
Address Inputs
MC74AC139DR2
SOIC−16
2500 Tape & Reel
E
Enable Inputs
MC74ACT139DR2
SOIC−16
2500 Tape & Reel
O0−O3
Outputs
MC74AC139DT
TSSOP−16
96 Units/Rail
MC74ACT139DT
TSSOP−16
96 Units/Rail
MC74AC139DTR2
TSSOP−16 2500 Tape & Reel
Figure 1. Pinout: 16−Lead Packages Conductors
(Top View)
TRUTH TABLE
Inputs
Outputs
E
A0
A1
O0
O1
O2
X
L
H
L
H
X
L
L
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
March, 2006 − Rev. 7
EIAJ−16
50 Units/Rail
EIAJ−16
2000 Tape & Reel
MC74ACT139MEL
EIAJ−16
2000 Tape & Reel
DEVICE MARKING INFORMATION
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
© Semiconductor Components Industries, LLC, 2006
50 Units/Rail
MC74AC139MEL
H
H
H
H
L
EIAJ−16
MC74ACT139M
O3
H
L
L
L
L
MC74AC139M
See general marking information in the device marking
section on page 6 of this data sheet.
1
Publication Order Number:
MC74AC139/D
