74F539 Dual 1-of-4 Decoder with 3-STATE Outputs
April 1988
Revised August 1999
74F539
Dual 1-of-4 Decoder with 3-STATE Outputs
General Description
The 74F539 contains two independent decoders. Each
accepts two Address (A
0
, A
1
) input signals and decodes
them to select one of four mutually exclusive outputs. A
polarity control input (P) determines whether the outputs
are active HIGH (P
=
L) or active LOW (P
=
H). An active
LOW input Enable (E) is available for data demultiplexing;
data is routed to the selected output in non-inverted form in
the active LOW mode or in inverted form in the active HIGH
mode. A HIGH signal on the active LOW Output Enable
(OE) input forces the 3-STATE outputs to the high imped-
ance state.
Ordering Code:
Order Number
74F539SC
74F539PC
Package Number
M20B
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-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
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation
DS009552
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74F539
Unit Loading/Fan Out
Pin Names
A
0a
–A
1a
A
0b
–A
1b
E
a
, E
b
OE
a
, OE
b
P
a
, P
b
O
0a
–O
3a
O
0b
–O
3b
Description
Side A Address Inputs
Side B Address Inputs
Enable Inputs (Active LOW)
Output Enable Inputs (Active LOW)
Polarity Control Inputs
Side A 3-STATE Outputs
Side B 3-STATE Outputs
U.L.
HIGH/LOW
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
150/40 (33.3)
150/40 (33.3)
Input I
IH
/I
IL
Output I
OH
/I
OL
20
µA/−0.6
mA
20
µA/−0.6
mA
20
µA/−0.6
mA
20
µA/−0.6
mA
20
µA/−0.6
mA
−3
mA/24 mA (20 mA)
−3
mA/24 mA (20 mA)
Truth Table
(each half)
Inputs
Function
OE
High Impedance
Disable
Active HIGH
Output
(P
=
L)
Active LOW
Output
(P
=
H)
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
Outputs
A
0
X
X
L
H
L
H
L
H
L
H
H
L
L
L
L
H
H
H
L
H
L
L
H
L
H
H
O
0
Z
O
1
Z
O
n
=
P
L
L
H
L
H
H
L
H
L
L
L
H
H
H
H
L
O
2
Z
O
3
Z
E
X
H
L
L
L
L
L
L
L
L
A
1
X
X
L
L
H
H
L
L
H
H
H
L
L
L
L
L
L
L
L
L
X
=
Immaterial
Z
=
High Impedance
Logic Diagram
(one half shown)
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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2
74F539
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)
twice the rated I
OL
(mA)
−0.5V
to V
CC
−0.5V
to
+5.5V
−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
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
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
Voltage
10% V
CC
10% V
CC
5% V
CC
5% V
CC
V
OL
I
IH
I
BVI
I
CEX
V
ID
I
OD
I
IL
I
OZH
I
OZL
I
OS
I
ZZ
I
CCH
I
CCL
I
CCZ
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 Leakage Current
Output Leakage Current
Output Short-Circuit Current
Bus Drainage Test
Power Supply Current
Power Supply Current
Power Supply Current
28
40
40
−60
4.75
3.75
−0.6
50
−50
−150
500
45
60
60
10% V
CC
2.5
2.4
2.7
2.7
0.5
5.0
7.0
50
V
µA
µA
µA
V
µA
mA
µA
µA
mA
µA
mA
mA
mA
Min
Max
Max
Max
0.0
0.0
Max
Max
Max
Max
0.0V
Max
Max
Max
V
Min
Min
2.0
0.8
−1.2
Typ
Max
Units
V
V
V
Min
V
CC
Conditions
Recognized as a HIGH Signal
Recognized as a LOW Signal
I
IN
= −18
mA
I
OH
= −1
mA
I
OH
= −3
mA
I
OH
= −1
mA
I
OH
= −3
mA
I
OL
=
24 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
=
2.7V
V
OUT
=
0.5V
V
OUT
=
0V
V
OUT
=
5.25V
V
O
=
HIGH
V
O
=
LOW
V
O
=
HIGH Z
3
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74F539
AC Electrical Characteristics
T
A
= +25°C
Symbol
Parameter
Min
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
A
n
to O
n
Propagation Delay
E to O
n
Propagation Delay
P to O
n
Output Enable Time
OE to O
n
Output Disable Time
OE to O
n
4.0
4.0
5.0
4.0
7.5
5.0
4.5
5.5
2.0
3.0
V
CC
= +5.0V
C
L
=
50 pF
Typ
14.5
9.5
12.0
7.5
14.5
11.0
8.0
10.0
4.5
6.5
Max
18.5
12.0
16.0
9.5
21.5
16.5
10.5
13.0
6.5
8.5
T
A
=
0°C to
+70°C
V
CC
= +5.0V
C
L
=
50 pF
Min
3.5
4.0
5.5
4.0
4.5
4.5
4.0
5.0
2.0
3.0
Max
19.5
13.0
17.0
10.5
22.5
17.5
11.5
14.0
7.0
9.5
ns
ns
ns
ns
Units
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4
74F539
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Number M20B
5
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