TL F 6516
5442ADM5442ADM7442A
BCD
to
Decimal
Decoders
June 1989
5442A DM5442A DM7442A
BCD to Decimal Decoders
General Description
These BCD-to-decimal decoders consist of eight inverters
and ten four-input NAND gates The inverters are connect-
ed in pairs to make BCD input data available for decoding
by the NAND gates Full decoding of input logic ensures
that all outputs remain off for all invalid (10 15) input condi-
tions
Features
Y
Diode clamped inputs
Y
Also for application as 4-line-to-16-line decoders 3-line-
to-8-line decoders
Y
All outputs are high for invalid input conditions
Y
Typical power dissipation 140 mW
Y
Typical propagation delay 17 ns
Y
Alternate Military Aerospace device (5442A) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
TL F 6516 1
Order Number 5442ADMQB 5442AFMQB DM5442AJ DM5442AW or DM7442AN
See NS Package Number J16A N16E or W16A
Function Table
No
BCD Input
Decimal Output
D
C
B
A
0
1
2
3
4
5
6
7
8
9
0
L
L
L
L
L
H
H
H
H
H
H
H
H
H
1
L
L
L
H
H
L
H
H
H
H
H
H
H
H
2
L
L
H
L
H
H
L
H
H
H
H
H
H
H
3
L
L
H
H
H
H
H
L
H
H
H
H
H
H
4
L
H
L
L
H
H
H
H
L
H
H
H
H
H
5
L
H
L
H
H
H
H
H
H
L
H
H
H
H
6
L
H
H
L
H
H
H
H
H
H
L
H
H
H
7
L
H
H
H
H
H
H
H
H
H
H
L
H
H
8
H
L
L
L
H
H
H
H
H
H
H
H
L
H
9
H
L
L
H
H
H
H
H
H
H
H
H
H
L
I
H
L
H
L
H
H
H
H
H
H
H
H
H
H
N
H
L
H
H
H
H
H
H
H
H
H
H
H
H
V
H
H
L
L
H
H
H
H
H
H
H
H
H
H
A
H
H
L
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
I
H
H
H
H
H
H
H
H
H
H
H
H
H
H
D
H
e
High Level
L
e
Low Level
C1995 National Semiconductor Corporation
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings
(Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
5 5V
Operating Free Air Temperature Range
DM54 and 54
b
55 C to
a
125 C
DM74
0 C to
a
70 C
Storage Temperature Range
b
65 C to
a
150 C
Note
The ``Absolute Maximum Ratings'' are those values
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ``Electrical Characteristics''
table are not guaranteed at the absolute maximum ratings
The ``Recommended Operating Conditions'' table will define
the conditions for actual device operation
Recommended Operating Conditions
Symbol
Parameter
DM5442A
DM7442A
Units
Min
Nom
Max
Min
Nom
Max
V
CC
Supply Voltage
4 5
5
5 5
4 75
5
5 25
V
V
IH
High Level Input Voltage
2
2
V
V
IL
Low Level Input Voltage
0 8
0 8
V
I
OH
High Level Output Current
b
0 8
b
0 8
mA
I
OL
Low Level Output Current
16
16
mA
T
A
Free Air Operating Temperature
b
55
125
0
70
C
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
V
I
Input Clamp Voltage
V
CC
e
Min I
I
e b
12 mA
b
1 5
V
V
OH
High Level Output
V
CC
e
Min I
OH
e
Max
2 4
3 4
V
Voltage
V
IL
e
Max V
IH
e
Min
V
OL
Low Level Output
V
CC
e
Min I
OL
e
Max
0 2
0 4
V
Voltage
V
IH
e
Min V
IL
e
Max
I
I
Input Current
Max
V
CC
e
Max V
I
e
5 5V
1
mA
Input Voltage
I
IH
High Level Input Current
V
CC
e
Max V
I
e
2 4V
40
m
A
I
IL
Low Level Input Current
V
CC
e
Max V
I
e
0 4V
b
1 6
mA
I
OS
Short Circuit
V
CC
e
Max
DM54
b
20
b
55
mA
Output Current
(Note 2)
DM74
b
18
b
55
I
CC
Supply Current
V
CC
e
Max
DM54
28
41
mA
(Note 3)
DM74
28
56
Note 1
All typicals are at V
CC
e
5V T
A
e
25 C
Note 2
Not more than one output should be shorted at a time
Note 3
I
CC
is measured with all outputs open and all inputs grounded
2
Switching Characteristics
at V
CC
e
5V and T
A
e
25 C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
Conditions
Min
Max
Units
t
PHL
Propagation Delay Time
C
L
e
15 pF
High to Low Level Output
R
L
e
400X
25
ns
from A B C or D through
2 Levels of Logic
t
PHL
Propagation Delay Time
High to Low Level Output
30
ns
from A B C or D through
3 Levels of Logic
t
PLH
Propagation Delay Time
Low to High Level Output
25
ns
from A B C or D through
2 Levels of Logic
t
PLH
Propagation Delay Time
Low to High Level Output
30
ns
from A B C or D through
3 Levels of Logic
Logic Diagram
Tl F 6516 2
3
4
Physical Dimensions
inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number 5442ADMQB or DM5442AJ
NS Package Number J16A
16-Lead Molded Dual-In-Line Package (N)
Order Number DM7442AN
NS Package Number N16E
5
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