National Semiconductor DM74LS14 Technical data

查询54LS供应商

54LS14/DM74LS14 Hex Inverters
with Schmitt Trigger Inputs

General Description

This device contains six independent gates each of which
performs the logic INVERT function. Each input has hyster­esis which increases the noise immunity and transforms a
slowly changing input signal to a fast changing, jitter free
output.

Connection Diagram

54LS14/DM74LS14 Hex Inverters with Schmitt Trigger Inputs

June 1989

Dual-In-Line Package

Order Number 54LS14DMQB, 54LS14FMQB,

54LS14LMQB, DM74LS14M or DM74LS14N

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

TL/F/6353– 1

Function Table

YeA

Input Output

AY

LH
HL

e

H

High Logic Level

e

L

Low Logic Level

C

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

TL/F/6353

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

54LS
DM74LS 0

Storage Temperature Range

b

55§Ctoa125§C

Ctoa70§C

§

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

Min Nom Max Min Nom Max

V

CC

V

a

T

V

b

T

Supply Voltage 4.5 5 5.5 4.75 5 5.25 V

Positive-Going Input
Threshold Voltage (Note 1)

Negative-Going Input
Threshold Voltage (Note 1)

HYS Input Hysteresis (Note 1) 0.4 0.8 0.4 0.8 V

I

OH

I

OL

T

A

High Level Output Current

Low Level Output Current 4 8 mA

Free Air Operating Temperature

b

54LS14 DM74LS14

Units

1.5 1.6 2.0 1.4 1.6 1.9 V

0.6 0.8 1.1 0.5 0.8 1 V

b

0.4

b

0.4 mA

55 125 0 70

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

Symbol Parameter Conditions Min

e

V

I

V

OH

V

OL

I

a

T

I

b

T

I

I

I

IH

I

IL

I

OS

I

CCH

I

CCL

Note 1: V

Note 2: All typicals are at V

Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Input Clamp Voltage V

High Level Output V
Voltage V

Low Level Output V
Voltage V

Input Current at V
Positive-Going Threshold

Input Current at V
Negative-Going Threshold

Input Current@Max V
Input Voltage

High Level Input Current V

Low Level Input Current V

Short Circuit V
Output Current (Note 3)

Supply Current with V
Outputs High

Supply Current with V
Outputs Low

e

5V.

CC

e

e

5V, T

CC

25§C.

A

CC

CC

e

IL

CC

e

IH

V

CC

CC

CC

CC

V

CC

CC

CC

CC

CC

CC

eb

Min, I

e

Min, I

Max

e

Min, I

Min

e

Min, I

e

5V, V

e

5V, V

e

Max, V

e

Max, V

e

Max, V

e

Max, V

e

Max 54LS

e

Max

e

Max

18 mA

I

e

Max 54LS 2.5 3.4

OH

e

Max 54LS 0.25 0.4

OL

e

4 mA DM74 0.25 0.4

OL

e

V

a

I

T

e

V

b

I

T

e

7V DM74

I

e

10.0V 54LS

I

e

2.7V 20 m A

I

e

0.4V

I

DM74 2.7 3.4

DM74 0.35 0.5 V

DM74

DM74

b

DM74

b

2

20

20

Typ

(Note 2)

b

0.14 mA

b

0.18 mA

Max Units

b

1.5 V

0.1 mA

b

0.4 mA

b

100

b

100

8.6 16 mA

12 21 mA

C

§

V

mA

Switching Characteristics at V

CC

e

5V and T

Symbol Parameter C

t

t

PLH

PHL

Propagation Delay Time
Low to High Level Output

Propagation Delay Time
High to Low Level Output

e

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

A

e

R

2kX

L

e

15 pF C

L

e

50 pF Units

L

Min Max Min Max

522825ns

5221033ns

3

Physical Dimensions inches (millimeters)

Ceramic Leadless Chip Carrier (E)

Order Number 54LS14LMQB

NS Package Number E20A

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

Order Number 54LS14DMQB

NS Package Number J14A

4

Physical Dimensions inches (millimeters) (Continued)

14-Lead Small Outline Molded Package (M)

Order Number DM74LS14M

NS Package Number M14A

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

Order Number DM74LS14N

NS Package Number N14A

5

Physical Dimensions inches (millimeters) (Continued)

14-Lead Ceramic Flat Package (W)

Order Number 54LS14FMQB

NS Package Number W14B

54LS14/DM74LS14 Hex Inverters with Schmitt Trigger Inputs

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.

National Semiconductor National Semiconductor National Semiconductor National Semiconductor
Corporation Europe Hong Kong Ltd. Japan Ltd.

1111 West Bardin Road Fax: (
Arlington, TX 76017 Email: [e-mail] Ocean Centre, 5 Canton Rd. Fax: [phone]
Tel: [phone] Deutsch Tel: (
Fax: [phone] English Tel: (

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

Fran3ais Tel: (
Italiano Tel: (

a

49) 0-180-530 85 86 13th Floor, Straight Block, Tel: [phone]

a

49) 0-180-530 85 85 Tsimshatsui, Kowloon

a

49) 0-180-532 78 32 Hong Kong

a

49) 0-180-532 93 58 Tel: [phone]

a

49) 0-180-534 16 80 Fax: [phone]