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MC74ACT139D

P1-P3P4-P6P7-P9P10-P11
© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 7
1 Publication Order Number:
MC74AC139/D
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.
• Multifunctional Capability
• Two Completely Independent 1−of−4 Decoders
• Active LOW Mutually Exclusive Outputs
• Outputs Source/Sink 24 mA
• ′ACT139 Has TTL Compatible Inputs
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.
1516 14 13 12 11 10
21 34567
V
CC
9
8
E
b
A
0b
A
1b
E
a
GND
O
0b
O
1b
O
2b
O
3b
A
0a
A
1a
O
0a
O
1a
O
2a
O
3a
Figure 1. Pinout: 16−Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN FUNCTION
A
0
, A
1
Address Inputs
E Enable Inputs
O
0
−O
3
Outputs
TRUTH TABLE
Inputs Outputs
E A
0
A
1
O
0
O
1
O
2
O
3
H X X H H H H
L L L L H H H
L H L H L H H
L L H H H L H
L H H H H H L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
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DIP−16
N SUFFIX
CASE 648
1
16
SO−16
D SUFFIX
CASE 751B
1
16
Device Package Shipping
ORDERING INFORMATION
MC74AC139N
PDIP−16
25 Units/Rail
MC74AC139D
SOIC−16
48 Units/Rail
MC74AC139DR2 2500 Tape & Reel
TSSOP−16
DT SUFFIX
CASE 948F
MC74AC139DT
TSSOP−16
96 Units/Rail
MC74AC139DTR2
TSSOP−16
SOIC−16
2500 Tape & Reel
MC74ACT139N
PDIP−16
25 Units/Rail
MC74ACT139D
SOIC−16
48 Units/Rail
MC74ACT139DR2 2500 Tape & Reel
MC74ACT139DT
TSSOP−16
96 Units/Rail
SOIC−16
1
16
See general marking information in the device marking
section on page 6 of this data sheet.
DEVICE MARKING INFORMATION
1
16
EIAJ−16
M SUFFIX
CASE 966
MC74AC139M
EIAJ−16
MC74AC139MEL
EIAJ−16
2000 Tape & Reel
MC74ACT139M
EIAJ−16
MC74ACT139MEL
EIAJ−16
2000 Tape & Reel
50 Units/Rail
50 Units/Rail
MC74AC139, MC74ACT139
http://onsemi.com
2
EA
0
A
1
O
0
O
1
O
2
O
3
DECODER a
Figure 2. Logic Symbol
E A
0
A
1
O
0
O
1
O
2
O
3
DECODER b
E
a
A
0a
A
1a
E
b
A
0b
A
1b
0
0a
0
1a
0
2a
0
3a
0
0b
0
1b
0
2b
0
3b
NOTE: This diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation
delays.
Figure 3. Logic Diagram
FUNCTIONAL DESCRIPTION
The MC74AC139/74ACT139 is a high−speed dual
1−of−4 decoder/demultiplexer. The device has two
independent decoders, each of which accepts two binary
weighted inputs (A
0
−A
1
) and provides four mutually
exclusive active−LOW outputs (O
0
−O
3
). Each decoder has
an active−LOW enable (E
). When E is HIGH all outputs are
forced HIGH. The enable can be used as the data input for
a 4−output demultiplexer application. Each half of the
MC74AC139/74ACT139 generates all four minterms of
two variables. These four minterms are useful in some
applications, replacing multiple gate functions as shown in
Figure 4, and thereby reducing the number of packages
required in a logic network.
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
O
0
O
0
O
1
O
1
O
2
O
2
O
3
O
3
Figure 4. Gate Functions (Each Half)
MC74AC139, MC74ACT139
http://onsemi.com
3
MAXIMUM RATINGS*
Symbol Parameter Value Unit
V
CC
DC Supply Voltage (Referenced to GND) −0.5 to +7.0 V
V
IN
DC Input Voltage (Referenced to GND) −0.5 to V
CC
+0.5 V
V
OUT
DC Output Voltage (Referenced to GND) −0.5 to V
CC
+0.5 V
I
IN
DC Input Current, per Pin ±20 mA
I
OUT
DC Output Sink/Source Current, per Pin ±50 mA
I
CC
DC V
CC
or GND Current per Output Pin ±50 mA
T
stg
Storage Temperature −65 to +150 °C
*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recom-
mended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage
′AC 2.0 5.0 6.0
V
′ACT 4.5 5.0 5.5
V
IN
, V
OUT
DC Input Voltage, Output Voltage (Ref. to GND) 0 − V
CC
V
t
r
, t
f
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
V
CC
@ 3.0 V − 150 −
V
CC
@ 4.5 V − 40 − ns/V
V
CC
@ 5.5 V − 25 −
t
r
, t
f
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
V
CC
@ 4.5 V − 10 −
ns/V
V
CC
@ 5.5 V − 8.0 −
T
J
Junction Temperature (PDIP) − − 140 °C
T
A
Operating Ambient Temperature Range −40 25 85 °C
I
OH
Output Current − High − − −24 mA
I
OL
Output Current − Low − − 24 mA
1. V
IN
from 30% to 70% V
CC
; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. V
IN
from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
P1-P3P4-P6P7-P9P10-P11

MC74ACT139D

Mfr. #:
Buy MC74ACT139D
Manufacturer:
ON Semiconductor
Description:
IC DECODER/DEMUX DUAL 1:4 16SOIC
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New from this manufacturer.
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