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DM7445N

Part # DM7445N
Description IC DECODER/DRIVER BCD-DEC 16-DIP
Category IC
Availability In Stock
Qty 7
Qty Price
1 + $1.17099
Manufacturer Available Qty
National Semiconductor Corp
Date Code: 8416
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National Semiconductor Corp
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

TL/F/6517
DM5445/DM7445 BCD to Decimal Decoders/Drivers
June 1989
DM5445/DM7445 BCD to Decimal Decoders/Drivers
General Description
These BCD-to-decimal decoders/drivers consist of eight in-
verters 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 BCD input
logic ensures that all outputs remain off for all invalid
(1015) binary input conditions. These decoders feature
high-performance, NPN output transistors designed for use
as indicator/relay drivers, or as open-collector logic-circuit
drivers. The high-breakdown output transistors are compati-
ble for interfacing with most MOS integrated circuits.
Features
Y
Full decoding of input logic
Y
80 mA sink-current capability
Y
All outputs are off for invalid BCD input conditions
Connection Diagram
Dual-In-Line Package
TL/F/65171
Order Number DM5445J, DM5445W or DM7445N
See NS Package Number J16A, N16E or W16A
Function Table
No.
Inputs Outputs
DCBA0123456789
0 L L L L LHHHHHHHHH
1 L L LHHLHHHHHHHH
2 L LHLHHLHHHHHHH
3 L LHHHHHLHHHHHH
4 LHL LHHHHLHHHHH
5 LHLHHHHHHLHHHH
6 LHHLHHHHHHLHHH
7 LHHHHHHHHHHLHH
8 HL L LHHHHHHHHLH
9 HL LHHHHHHHHHHL
I HLHLHHHHHHHHHH
N HLHHHHHHHHHHHH
V HHL LHHHHHHHHHH
A HHLHHHHHHHHHHH
L HHHLHHHHHHHHHH
I HHHHHHHHHHHHHH
D
H
e
High Level (Off), L
e
Low Level (On)
C
1995 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
Output Voltage 30V
Operating Free Air Temperature Range
DM54
b
55
§
Cto
a
125
§
C
DM74 0
§
Cto
a
70
§
C
Storage Temperature Range
b
65
§
Cto
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
DM5445 DM7445
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
V
OH
High Level Output Voltage 30 30 V
I
OL
Low Level Output Current 20 20 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
eb
12 mA
b
1.5 V
I
CEX
High Level Output V
CC
e
Min, V
O
e
30V
250 mA
Current 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
Voltage V
IH
e
Min, V
IL
e
Max
V
I
OL
e
80 mA
0.5 0.9
V
CC
e
Min
I
I
Input Current
@
Max V
CC
e
Max, V
I
e
5.5V
1mA
Input Voltage
I
IH
High Level Input Current V
CC
e
Max, V
I
e
2.4V 40 mA
I
IL
Low Level Input Current V
CC
e
Max, V
I
e
0.4V
b
1.6 mA
I
CC
Supply Current V
CC
e
Max DM54 43 62
mA
(Note 2)
DM74 43 70
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
PLH
Propagation Delay Time C
L
e
15 pF
49.5 ns
Low to High Level Output R
L
e
100X
t
PHL
Propagation Delay Time
49.5 ns
High to Low Level Output
Note 1: All typicals are at V
CC
e
5V, T
A
e
25
§
C.
Note 2: I
CC
is measured with all inputs grounded and all outputs open.
2
Logic Diagram
TL/F/6517 2
Physical Dimensions inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number DM5445J
NS Package Number J16A
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