NSC DM74154N, DM54154J, 54154FMQB Datasheet

54154/DM54154/DM74154
4-Line to 16-Line Decoders/Demultiplexers

54154/DM54154/DM74154 4-Line to 16-Line Decoders/Demultiplexers

June 1989

General Description

Each or these 4-line-to-16-line decoders utilizes TTL circuit­ry to decode four binary-coded inputs into one of sixteen
mutually exclusive outputs when both the strobe inputs, G1
and G2, are low. The demultiplexing function is performed
by using the 4 input lines to address the output line, passing
data from one of the strobe inputs with the other strobe
input low. When either strobe input is high, all outputs are
high. These demultiplexers are ideally suited for implement­ing high-performance memory decoders. All inputs are buff­ered and input clamping diodes are provided to minimize
transmission-line effects and thereby simplify system de­sign.

Connection Diagram

Dual-In-Line Package

Features

Y

Decodes 4 binary-coded inputs into one of 16 mutually
exclusive outputs

Y

Performs the demultiplexing function by distributing data
from one input line to any one of 16 outputs

Y

Input clamping diodes simplify system design

Y

High fan-out, low-impedance, totem-pole outputs

Y

Typical propagation delay

3 levels of logic 19 ns
Strobe 18 ns

Y

Typical power dissipation 170 mW

Y

Alternate Military/Aerospace device (54154) is avail­able. Contact a National Semiconductor Sales Office/
Distributor for specifications.

Order Number 54154DMQB, 54154FMQB, DM54154J or DM74154N

C

1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.

See NS Package Number J24A, N24A or W24C

TL/F/6548

TL/F/6548– 1

Absolute Maximum Ratings (Note)

The ‘‘Absolute Maximum Ratings’’ are those values

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
DM74 0

Storage Temperature Range

b

55§Ctoa125§C

Ctoa70§C

§

b

65§Ctoa150§C

Note:

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

V

CC

V

IH

V

IL

I

OH

I

OL

T

A

Supply Voltage 4.5 5 5.5 4.75 5 5.25 V

High Level Input Voltage 2 2 V

Low Level Input Voltage 0.8 0.8 V

High Level Output Current

Low Level Output Current 16 16 mA

Free Air Operating Temperature

DM54154 DM74154

Min Nom Max Min Nom Max

b

0.8

b

55 125 0 70

b

Units

0.8 mA

Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)

Symbol Parameter Conditions Min

e

V

I

V

OH

V

OL

I

I

I

IH

I

IL

I

OS

I

CC

Note 1: All typicals are at V

Note 2: Not more than one output should be shorted at a time.

Note 3: I

Input Clamp Voltage V

High Level Output V
Voltage V

Low Level Output V
Voltage V

Input Current@Max V
Input Voltage

High Level Input Current V

Low Level Input Current V

Short Circuit V
Output Current (Note 2)

Supply Current V

e

e

5V, T

CC

is measured with all outputs open and all inputs grounded.

CC

25§C.

A

CC

CC
IL

CC
IH

CC

CC

CC

CC

CC

(Note 3)

Switching Characteristics at V

Symbol Parameter

t

t

t

t

PLH

PHL

PLH

PHL

Propagation Delay Time Data to
Low to High Level Output Output

Propagation Delay Time Data to
High to Low Level Output Output

Propagation Delay Time Strobe to
Low to High Level Output Output

Propagation Delay Time Strobe to
High to Low Level Output Output

e

e

CC

eb

Min, I

e

Min, I

Max, V

e

Min, I

Min, V

e

Max, V

e

Max, V

e

Max, V

e

Max DM54

e

Max DM54 34 49

12 mA

I

e

Max

OH

e

Min

IH

e

Max

OL

e

Max

IL

e

5.5V

I

e

2.4V 40 mA

I

e

0.4V

I

DM74

2.4 3.2 V

b

b

DM74 34 56

e

5V and T

From (Input) R

To (Output)

e

25§C (See Section 1 for Test Waveforms and Output Load)

A

e

L

Min Max

20

18

Typ

(Note 1)

0.25 0.4 V

400X,C

e

15 pF

L

36 ns

33 ns

30 ns

27 ns

Max Units

b

1.5 V

1mA

b

1.6 mA

b

55

b

57

Units

§

mA

mA

C

2