Datasheet DM54LS260, DM74LS260 Datasheet (National Semiconductor)

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DM54LS260/DM74LS260
Dual 5-Input NOR Gate

General Description

This device contains two individual five input gates, each of
which perform the logic NOR function.

Connection Diagram

DM54LS260/DM74LS260 Dual 5-Input NOR Gate

April 1992

Dual-In-Line Package

Truth Table

Order Number DM54LS260J, DM54LS260W,

TL/F/9824– 1

DN54LS260E, DM74LS260M or DM74LS260N

See NS Package Number E20A, J14A, M14A, N14A or W14B

AaBaCaDaEeY

Inputs Outputs

ABCDE Y

LLLLL H
XXXXH L
XXXHX L
XXHXX L
XHXXX L
HXXX X L

C

1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

TL/F/9824

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 7V

Operating Free Air Temperature Range

DM54LS
DM74LS 0

Storage Temperature Range

b

55§Ctoa125§C

Ctoa70§C

§

b

65§Ctoa150§C

The ‘‘Absolute Maximum Ratings’’ are those values

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 0.7 0.8 V

High Level Output Current

Low Level Output Current 4 8 mA

Free Air Operating Temperature

DM54LS260 DM74LS260

Min Nom Max Min Nom Max

b

0.4

b

55 125 0 70

b

0.4 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

Input Clamp Voltage V

High Level Output V
Voltage V

Low Level Output V
Voltage V

Input Current@Max V
Input Voltage V

High Level Input Current V

Low Level Input Current V

CC

CC

e

IL

CC

e

IH

e

I

OL

CC

CC

CC

Min, I

e

Min, I

Max

e

Min, I

Min

4 mA, V

e

Max, V

e

Max, V

e

Max, V

eb

18 mA

I

e

Max DM54 2.5

OH

DM74 2.7

e

Max DM54 0.4

OL

DM74 0.5 V

e

Min DM74 0.4

CC

e

7V

I

e

10V DM54

I

e

2.7V 20 mA

I

e

0.4V DM54

I

DM74

I

OS

I

CCH

I

CCL

Note 1: All typicals are at V

Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Short Circuit V
Output Current (Note 2)

Supply Current with Outputs High V

Supply Current with Outputs Low V

e

e

5V, T

CC

25§C.

A

e

Max DM54

CC

CC

CC

e

e

Max, V

Max, V

e

GND 4.0 mA

IN

e

Open 5.5 mA

IN

DM74

b

b

Typ

(Note 1)

Max Units

b

1.5 V

0.1 mA

b

0.40

b

0.36

20

20

b

100

b

100

Units

C

§

mA

mA

V

Switching Characteristics V

Symbol Parameter

t

t

PLH

PHL

Propagation Delay Time
Low to High Level Output

Propagation Delay Time
High to Low Level Output

CC

ea

5V, T

A

ea

2

25§C

e

2kX,C

R

L

Min Max

e

15 pF

L

10 ns

12 ns

Units

3

Physical Dimensions inches (millimeters)

Ceramic Leadless Chip Carrier Package (E)

Order Number DM54LS260E

NS Package Number E20A

14-Lead Ceramic Dual-In-Line Package (J)

Order Number DM54LS260J

NS Package Number J14A

4

Physical Dimensions inches (millimeters) (Continued)

14-Lead Small Outline Molded Package (M)

Order Number DM74LS260M

NS Package Number M14A

14-Lead Molded Dual-In-Line Package (N)

Order Number DM74LS260N

NS Package Number N14A

5

Physical Dimensions inches (millimeters) (Continued)

14-Lead Ceramic Flat Package (W)

Order Number DM54LS260W

NS Package Number W14B

DM54LS260/DM74LS260 Dual 5-Input NOR Gate

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or 2. A critical component is any component of a life
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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