5-1
FACT DATA
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.
Multifunction Capability
Two Completely Independent 1-of-4 Decoders
Active LOW Mutually Exclusive Outputs
Outputs Source/Sink 24 mA
ACT139 Has TTL Compatible Inputs
15
16
14
13
12
11
10
2
1
3
4
5
6
7
VCC
9
8
Eb
A0b
A1b
Ea
GND
O0b
O1b
O2b
O3b
A0a
A1a
O0a
O1a
O2a
O3a
PIN NAMES
A0, A1
Address Inputs
E
Enable Inputs
O0O3
Outputs
TRUTH TABLE
Inputs
Outputs
E
A0
A1
O0
O1
O2
O3
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
MC74AC139
MC74ACT139
DUAL 1-OF-4
DECODER/DEMULTIPLEXER
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
E A0 A1
O0 O1 O2 O3
DECODER a
LOGIC SYMBOL
E A0 A1
O0 O1 O2 O3
DECODER b
MC74AC139 MC74ACT139
5-2
FACT DATA
Ea
A0a
A1a
Eb
A0b A1b
00a
01a
02a
03a
00b
01b
02b
03b
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
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
(A0A1) and provides four mutually exclusive active-LOW
outputs (O0O3). 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 a, and thereby reducing the
number of packages required in a logic network.
E
A0
A1
E
A0
A1
E
A0
A1
E
A0
A1
E
A0
A1
E
A0
A1
E
A0
A1
E
A0
A1
O0
O0
O1
O1
O2
O2
O3
O3
Figure a: Gate Functions (each half)
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage (Referenced to GND)
0.5 to +7.0
V
Vin
DC Input Voltage (Referenced to GND)
0.5 to VCC +0.5
V
Vout
DC Output Voltage (Referenced to GND)
0.5 to VCC +0.5
V
Iin
DC Input Current, per Pin
20
mA
Iout
DC Output Sink/Source Current, per Pin
50
mA
ICC
DC VCC or GND Current per Output Pin
50
mA
Tstg
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 Recommended
Operating Conditions.
MC74AC139 MC74ACT139
5-3
FACT DATA
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
AC
2.0
5.0
6.0
V
VCC
Supply Voltage
ACT
4.5
5.0
5.5
V
Vin, Vout
DC Input Voltage, Output Voltage (Ref. to GND)
0
VCC
V
tr, tf
Input Rise and Fall Time (Note 1)
AC Devices except Schmitt Inputs
VCC @ 3.0 V
150
tr, tf
Input Rise and Fall Time (Note 1)
AC Devices except Schmitt Inputs
VCC @ 4.5 V
40
ns/V
r, tf
AC Devices except Schmitt Inputs
VCC @ 5.5 V
25
tr, tf
Input Rise and Fall Time (Note 2)
ACT Devices except Schmitt Inputs
VCC @ 4.5 V
10
ns/V
tr, tf
Input Rise and Fall Time (Note 2)
ACT Devices except Schmitt Inputs
VCC @ 5.5 V
8.0
ns/V
TJ
Junction Temperature (PDIP)
140
C
TA
Operating Ambient Temperature Range
40
25
85
C
IOH
Output Current -- High
24
mA
IOL
Output Current -- Low
24
mA
1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
DC CHARACTERISTICS
Symbol
Parameter
VCC
(V)
74AC
74AC
Unit
Conditions
Symbol
Parameter
VCC
(V)
TA = +25
C
TA =
40
C to +85
C
Unit
Conditions
Typ
Guaranteed Limits
VIH
Minimum High Level
Input Voltage
3.0
1.5
2.1
2.1
VOUT = 0.1 V
Input Voltage
4.5
2.25
3.15
3.15
V
or VCC 0.1 V
5.5
2.75
3.85
3.85
VIL
Maximum Low Level
Input Voltage
3.0
1.5
0.9
0.9
VOUT = 0.1 V
Input Voltage
4.5
2.25
1.35
1.35
V
or VCC 0.1 V
5.5
2.75
1.65
1.65
VOH
Minimum High Level
Output Voltage
3.0
2.99
2.9
2.9
IOUT = 50
A
Output Voltage
4.5
4.49
4.4
4.4
V
5.5
5.49
5.4
5.4
V
*VIN = VIL or VIH
3.0
2.56
2.46
V
12 mA
4.5
3.86
3.76
V
IOH
24 mA
5.5
4.86
4.76
24 mA
VOL
Maximum Low Level
Output Voltage
3.0
0.002
0.1
0.1
IOUT = 50
A
Output Voltage
4.5
0.001
0.1
0.1
V
5.5
0.001
0.1
0.1
V
*VIN = VIL or VIH
3.0
0.36
0.44
V
12 mA
4.5
0.36
0.44
V
IOL
24 mA
5.5
0.36
0.44
24 mA
IIN
Maximum Input
Leakage Current
5.5
0.1
1.0
A
VI = VCC, GND
Leakage Current
5.5
0.1
1.0
A
VI = VCC, GND
IOLD
Minimum Dynamic
Output Current
5.5
75
mA
VOLD = 1.65 V Max
IOHD
Output Current
5.5
75
mA
VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80
A
VIN = VCC or GND
Supply Current
5.5
8.0
80
A
VIN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
MC74AC139 MC74ACT139
5-4
FACT DATA
AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3)
Symbol
Parameter
VCC*
(V)
74AC
74AC
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25
C
CL = 50 pF
TA = 40
C
to +85
C
CL = 50 pF
Unit
Fig.
No.
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
An to On
3.3
4.0
8.0
11.5
3.5
13
ns
3-6
tPLH
An to On
5.0
3.0
6.5
8.5
2.5
9.5
ns
3-6
tPHL
Propagation Delay
An to On
3.3
3.0
7.0
10
2.5
11
ns
3-6
tPHL
An to On
5.0
2.5
5.5
7.5
2.0
8.5
ns
3-6
tPLH
Propagation Delay
En to On
3.3
4.5
9.5
12
3.5
13
ns
3-6
tPLH
En to On
5.0
3.5
7.0
8.5
3.0
10
ns
3-6
tPHL
Propagation Delay
En to On
3.3
4.0
8.0
10
3.0
11
ns
3-6
tPHL
En to On
5.0
2.5
6.0
7.5
2.5
8.5
ns
3-6
* Voltage Range 3.3 V is 3.3 V
0.3 V.
Voltage Range 5.0 V is 5.0 V
0.5 V.
DC CHARACTERISTICS
Symbol
Parameter
VCC
(V)
74ACT
74ACT
Unit
Conditions
Symbol
Parameter
VCC
(V)
TA = +25
C
TA =
40
C to +85
C
Unit
Conditions
Typ
Guaranteed Limits
VIH
Minimum High Level
Input Voltage
4.5
1.5
2.0
2.0
V
VOUT = 0.1 V
Input Voltage
5.5
1.5
2.0
2.0
V
or VCC 0.1 V
VIL
Maximum Low Level
Input Voltage
4.5
1.5
0.8
0.8
V
VOUT = 0.1 V
Input Voltage
5.5
1.5
0.8
0.8
V
or VCC 0.1 V
VOH
Minimum High Level
Output Voltage
4.5
4.49
4.4
4.4
V
IOUT = 50
A
Output Voltage
5.5
5.49
5.4
5.4
V
*VIN = VIL or VIH
4.5
3.86
3.76
V
IOH
24 mA
5.5
4.86
4.76
IOH
24 mA
VOL
Maximum Low Level
Output Voltage
4.5
0.001
0.1
0.1
V
IOUT = 50
A
Output Voltage
5.5
0.001
0.1
0.1
V
*VIN = VIL or VIH
4.5
0.36
0.44
V
IOL
24 mA
5.5
0.36
0.44
IOL
24 mA
IIN
Maximum Input
Leakage Current
5.5
0.1
1.0
A
VI = VCC, GND
Leakage Current
5.5
0.1
1.0
A
VI = VCC, GND
ICCT
Additional Max. ICC/Input
5.5
0.6
1.5
mA
VI = VCC 2.1 V
IOLD
Minimum Dynamic
Output Current
5.5
75
mA
VOLD = 1.65 V Max
IOHD
Output Current
5.5
75
mA
VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80
A
VIN = VCC or GND
Supply Current
5.5
8.0
80
A
VIN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
Maximum test duration 2.0 ms, one output loaded at a time.
MC74AC139 MC74ACT139
5-5
FACT DATA
AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3)
Symbol
Parameter
VCC*
(V)
74ACT
74ACT
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25
C
CL = 50 pF
TA = 40
C
to +85
C
CL = 50 pF
Unit
Fig.
No.
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
An to On
5.0
1.5
6.0
8.5
1.5
9.5
ns
3-6
tPLH
An to On
5.0
1.5
6.0
8.5
1.5
9.5
ns
3-6
tPHL
Propagation Delay
An to On
5.0
1.5
6.0
9.5
1.5
10.5
ns
3-6
tPHL
An to On
5.0
1.5
6.0
9.5
1.5
10.5
ns
3-6
tPLH
Propagation Delay
En to On
5.0
2.5
7.0
10.0
2.0
11.0
ns
3-6
tPLH
En to On
5.0
2.5
7.0
10.0
2.0
11.0
ns
3-6
tPHL
Propagation Delay
En to On
5.0
2.0
7.0
9.5
1.5
10.5
ns
3-6
tPHL
En to On
5.0
2.0
7.0
9.5
1.5
10.5
ns
3-6
* Voltage Range 5.0 V is 5.0 V
0.5 V.
CAPACITANCE
Symbol
Parameter
Value
Typ
Unit
Test Conditions
CIN
Input Capacitance
4.5
pF
VCC = 5.0 V
CPD
Power Dissipation Capacitance
40
pF
VCC = 5.0 V
MC74AC139 MC74ACT139
5-6
FACT DATA
OUTLINE DIMENSIONS
N SUFFIX
PLASTIC DIP PACKAGE
CASE 64808
ISSUE R
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B05
ISSUE J
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
1
8
16
9
SEATING
PLANE
F
J
M
R
X 45
_
G
8 PL
P
B
A
M
0.25 (0.010)
B
S
T
D
K
C
16 PL
S
B
M
0.25 (0.010)
A
S
T
DIM
MIN
MAX
MIN
MAX
INCHES
MILLIMETERS
A
9.80
10.00
0.386
0.393
B
3.80
4.00
0.150
0.157
C
1.35
1.75
0.054
0.068
D
0.35
0.49
0.014
0.019
F
0.40
1.25
0.016
0.049
G
1.27 BSC
0.050 BSC
J
0.19
0.25
0.008
0.009
K
0.10
0.25
0.004
0.009
M
0
7
0
7
P
5.80
6.20
0.229
0.244
R
0.25
0.50
0.010
0.019
_
_
_
_
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
A
B
F
C
S
H
G
D
J
L
M
16 PL
SEATING
1
8
9
16
K
PLANE
T
M
A
M
0.25 (0.010)
T
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.740
0.770
18.80
19.55
B
0.250
0.270
6.35
6.85
C
0.145
0.175
3.69
4.44
D
0.015
0.021
0.39
0.53
F
0.040
0.70
1.02
1.77
G
0.100 BSC
2.54 BSC
H
0.050 BSC
1.27 BSC
J
0.008
0.015
0.21
0.38
K
0.110
0.130
2.80
3.30
L
0.295
0.305
7.50
7.74
M
0
10
0
10
S
0.020
0.040
0.51
1.01
_
_
_
_
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MC74AC139/D
*MC74AC139/D*
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