NSC 5442AFMQB

5442A/DM5442A/DM7442A
BCD to Decimal Decoders
General Description
Features
These BCD-to-decimal decoders consist of eight inverters
and ten, four-input NAND gates. The inverters are connected 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 conditions.
Y
Y
Y
Y
Y
Y
Diode clamped inputs
Also for application as 4-line-to-16-line decoders; 3-lineto-8-line decoders
All outputs are high for invalid input conditions
Typical power dissipation 140 mW
Typical propagation delay 17 ns
Alternate Military/Aerospace device (5442A) is available. 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
BCD Input
No.
Decimal Output
D
C
B
A
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
L
L
L
L
L
L
L
L
L
H
L
L
H
H
L
L
H
L
H
L
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
5
6
7
8
9
L
L
L
H
H
H
H
H
L
L
L
H
H
L
L
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
I
N
V
A
L
I
D
H
H
H
H
H
H
L
L
H
H
H
H
H
H
L
L
H
H
L
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H e High Level
L e Low Level
C1995 National Semiconductor Corporation
TL/F/6516
RRD-B30M105/Printed in U. S. A.
5442A/DM5442A/DM7442A BCD to Decimal Decoders
June 1989
Absolute Maximum Ratings (Note)
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaranteed. 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.
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
b 55§ C to a 125§ C
DM54 and 54
DM74
0§ C to a 70§ C
Storage Temperature Range
b 65§ C to a 150§ C
Recommended Operating Conditions
Symbol
DM5442A
Parameter
DM7442A
Units
Min
Nom
Max
Min
Nom
Max
4.5
5
5.5
4.75
5
5.25
V
0.8
0.8
V
VCC
Supply Voltage
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IOH
High Level Output Current
b 0.8
b 0.8
mA
IOL
Low Level Output Current
16
16
mA
TA
Free Air Operating Temperature
70
§C
2
2
b 55
125
V
0
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
(Note 1)
Max
Units
b 1.5
V
VI
Input Clamp Voltage
VOH
High Level Output
Voltage
VCC e Min, II e b12 mA
VCC e Min, IOH e Max
VIL e Max, VIH e Min
VOL
Low Level Output
Voltage
VCC e Min, IOL e Max
VIH e Min, VIL e Max
II
Input Current @ Max
Input Voltage
VCC e Max, VI e 5.5V
IIH
High Level Input Current
VCC e Max, VI e 2.4V
40
mA
IIL
Low Level Input Current
VCC e Max, VI e 0.4V
b 1.6
mA
IOS
Short Circuit
Output Current
VCC e Max
(Note 2)
DM54
b 20
b 55
DM74
b 18
b 55
Supply Current
VCC e Max
(Note 3)
DM54
28
41
DM74
28
56
ICC
Note 1: All typicals are at VCC e 5V, TA e 25§ C.
Note 2: Not more than one output should be shorted at a time.
Note 3: ICC is measured with all outputs open and all inputs grounded.
2
2.4
3.4
0.2
V
0.4
V
1
mA
mA
mA
Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load)
Symbol
tPHL
tPHL
tPLH
tPLH
Parameter
Conditions
Propagation Delay Time
High to Low Level Output
from A, B, C or D through
2 Levels of Logic
CL e 15 pF
RL e 400X
Min
Max
Units
25
ns
Propagation Delay Time
High to Low Level Output
from A, B, C or D through
3 Levels of Logic
30
ns
Propagation Delay Time
Low to High Level Output
from A, B, C or D through
2 Levels of Logic
25
ns
Propagation Delay Time
Low to High Level Output
from A, B, C or D through
3 Levels of Logic
30
ns
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
5442A/DM5442A/DM7442A BCD to Decimal Decoders
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flat Package (W)
Order Number 5442AFMQB or DM5442AW
NS Package Number W16A
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