NSC DM5442AJ-883 Datasheet

TL/F/6516

5442A/DM5442A/DM7442A 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 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.

Features

Y

Diode clamped inputs

Y

Also for application as 4-line-to-16-line decoders; 3-line­to-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 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

No.

BCD Input Decimal Output

DCBA0123456789

0 L L L L LHHHHHHHHH
1 L L L HHLHHHHHHHH
2 L L HL HHLHHHHHHH
3 L L HHHHHL HHHHHH
4 LHL L HHHHLHHHHH

5 LHL HHHHHHL HHHH
6 LHHLHHHHHHLHHH
7 LHHHHHHHHHHL HH
8 H L L L HHHHHHHHL H
9 H L LHHHHHHHHHHL

I H LHL HHHHHHHHHH
N H LHHHHHHHHHHHH
V HHL LHHHHHHHHHH
A HHL HHHHHHHHHHH
L HHH LHHHHHHHHHH

I HHHHHHHHHHHHHH
D

HeHigh Level
L

e

Low Level

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

Operating Free Air Temperature Range

DM54 and 54

b

55§Ctoa125§C

DM74 0

§

Ctoa70§C

Storage Temperature Range

b

65§Ctoa150§C

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.

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

eb

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
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

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