5442AFMQBNOPB - National Semiconductor

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 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

YDiode clamped inputs

YAlso for application as 4-line-to-16-line decoders; 3-line-

to-8-line decoders

YAll outputs are high for invalid input conditions

YTypical power dissipation 140 mW

YTypical propagation delay 17 ns

YAlternate 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

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

High Level

LeLow 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 b55§Ctoa

125§C

DM74 0§Ctoa

70§C

Storage Temperature Range b65§Ctoa

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

VCC Supply Voltage 4.5 5 5.5 4.75 5 5.25 V

VIH High Level Input Voltage 2 2 V

VIL Low Level Input Voltage 0.8 0.8 V

IOH High Level Output Current b0.8 b0.8 mA

IOL Low Level Output Current 16 16 mA

TAFree Air Operating Temperature b55 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)

VIInput Clamp Voltage VCC eMin, IIeb

12 mA b1.5 V

VOH High Level Output VCC eMin, IOH eMax 2.4 3.4 V

Voltage VIL eMax, VIH eMin

VOL Low Level Output VCC eMin, IOL eMax 0.2 0.4 V

Voltage VIH eMin, VIL eMax

IIInput Current @Max VCC eMax, VIe5.5V 1mA

Input Voltage

IIH High Level Input Current VCC eMax, VIe2.4V 40 mA

IIL Low Level Input Current VCC eMax, VIe0.4V b1.6 mA

IOS Short Circuit VCC eMax DM54 b20 b55 mA

Output Current (Note 2) DM74 b18 b55

ICC Supply Current VCC eMax DM54 28 41 mA

(Note 3) DM74 28 56

Note 1: All typicals are at VCC e5V, TAe25§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.

Switching Characteristics at VCC e5V and TAe25§C (See Section 1 for Test Waveforms and Output Load)

Symbol Parameter Conditions Min Max Units

tPHL Propagation Delay Time CLe15 pF

High to Low Level Output RLe400X25 ns

from A, B, C or D through

2 Levels of Logic

tPHL Propagation Delay Time

High to Low Level Output 30 ns

from A, B, C or D through

3 Levels of Logic

tPLH Propagation Delay Time

Low to High Level Output 25 ns

from A, B, C or D through

2 Levels of Logic

tPLH 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

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

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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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL

SEMICONDUCTOR CORPORATION. As used herein:

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systems which, (a) are intended for surgical implant support device or system whose failure to perform can

into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life

failure to perform, when properly used in accordance support device or system, or to affect its safety or

with instructions for use provided in the labeling, can effectiveness.

be reasonably expected to result in a significant injury

to the user.

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