74F139 Dual 1-of-4 Decoder/Demultiplexer
April 1988
Revised September 2000
74F139
Dual 1-of-4 Decoder/Demultiplexer
General Description
The F139 is a high-speed, dual 1-of-4 decoder/demulti-
plexer. 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 F139 can be used
as a function generator providing all four minterms of two
variables.
Features
s
Multifunction capability
s
Two completely independent 1-of-4 decoders
s
Active LOW mutually exclusive outputs
Ordering Code:
Order Number
74F139SC
74F139SJ
74F139PC
Package Number
M16A
M16D
N16E
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
Truth Table
Inputs
IEEE/IEC
E
H
L
L
L
L
A
0
X
L
H
L
H
A
1
X
L
L
H
H
O
0
H
L
H
H
H
O
1
H
H
L
H
H
O
2
H
H
H
L
H
O
3
H
H
H
H
L
Outputs
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
© 2000 Fairchild Semiconductor Corporation
DS009479
www.fairchildsemi.com
74F139
Unit Loading/Fan Out
U.L.
Pin Names
A
0
, A
1
E
O
0
–O
3
Description
Address Inputs
Enable Inputs (Active LOW)
Outputs (Active LOW)
1.0/1.0
1.0/1.0
50/33.3
Input I
IH
/I
IL
HIGH/LOW Output I
OH
/I
OL
20
µ
A/
−
0.6 mA
20
µ
A/
−
0.6 mA
−
1 mA/20 mA
Functional Description
The F139 is a high-speed dual 1-of-4 decoder/demulti-
plexer. The device has two independent decoders, each of
which accepts two binary weighted inputs (A
0
–A
1
) and pro-
vides 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 F139 generates all four minterms of two
variables. These four minterms are useful in some applica-
tions, replacing multiple gate functions as shown in
Figure 1, and thereby reducing the number of packages
required in a logic network.
FIGURE 1. Gate Functions (each half)
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
www.fairchildsemi.com
2
74F139
Absolute Maximum Ratings
(Note 1)
Storage Temperature
Ambient Temperature under Bias
Junction Temperature under Bias
V
CC
Pin Potential to Ground Pin
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Output
in HIGH State (with V
CC
=
0V)
Standard Output
3 STATE Output
Current Applied to Output
in LOW State (Max)
ESD Last Passing Voltage (Min)
twice the rated I
OL
(mA)
4000V
−
65
°
C to
+
150
°
C
−
55
°
C to
+
125
°
C
−
55
°
C to
+
150
°
C
−
0.5V to
+
7.0V
−
0.5V to
+
7.0V
−
30 mA to
+
5.0 mA
Recommended Operating
Conditions
Free Air Ambient Temperature
Supply Voltage
0
°
C to
+
70
°
C
+
4.5V to
+
5.5V
−
0.5V to V
CC
−
0.5V to
+
5.5V
Note 1:
Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
Note 2:
Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Symbol
V
IH
V
IL
V
CD
V
OH
V
OL
I
IH
I
BVI
I
CEX
V
ID
I
OD
I
IL
I
OS
I
CC
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
Output LOW Voltage
Input HIGH Current
Input HIGH Current Breakdown Test
Output HIGH Leakage Current
Input Leakage Test
Output Leakage Circuit Current
Input LOW Current
Output Short-Circuit Current
Power Supply Current
−60
13
4.75
3.75
−0.6
−150
20
10% V
CC
5% V
CC
10% V
CC
2.5
2.7
0.5
5.0
7.0
50
Min
2.0
0.8
−1.2
Typ
Max
Units
V
V
V
V
V
µA
µA
µA
V
µA
mA
mA
mA
Min
Min
Min
Max
Max
Max
0.0
0.0
Max
Max
Max
V
CC
Conditions
Recognized as a HIGH Signal
Recognized as a LOW Signal
I
IN
= −18
mA
I
OH
= −1
mA
I
OH
= −1
mA
I
OL
=
20 mA
V
IN
=
2.7V
V
IN
=
7.0V
V
OUT
=
V
CC
I
ID
=
1.9
µA
All Other Pins Grounded
V
IOD
=
150 mV
All Other Pins Grounded
V
IN
=
0.5V
V
OUT
=
0V
AC Electrical Characteristics
T
A
= +25°C
Symbol
Parameter
Min
t
PLH
t
PHL
t
PLH
t
PHL
Propagation Delay
A
0
or A
1
to O
n
Propagation Delay
E
1
to O
n
3.5
4.0
3.5
3.0
V
CC
= +5.0V
C
L
=
50 pF
Typ
5.3
6.1
5.4
4.7
Max
7.5
8.0
7.0
6.5
T
A
=
0°C to
+70°C
V
CC
= +5.0V
C
L
=
50 pF
Min
3.0
4.0
3.5
3.0
Max
8.5
9.0
8.0
7.5
ns
ns
Units
3
www.fairchildsemi.com
74F139
Physical Dimensions
inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M16A
www.fairchildsemi.com
4
74F139
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M16D
5
www.fairchildsemi.com
京公网安备 11010802033920号
EEWORLD
