DM74LS151 1-of-8 Line Data Selector/Multiplexer Datasheet

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© 2000 Fairchild Semiconductor Corporation

DS006392

www.fairchildsemi.com

August 1986

Revised March 2000

DM74LS151

 1-
of-
8

 Li
ne 

Data 

Sele

ctor

/Mult

ip

lexer

DM74LS151
1-of-8 Line Data Selector/Multiplexer 

General Description

This data selector/multiplexer contains full on-chip decod-
ing to select the desired data source. The DM74LS151
selects one-of-eight data sources. The DM74LS151 has a
strobe input which must be at a low logic level to enable
these devices. A high level at the strobe forces the W out-
put HIGH, and the Y output LOW.

The DM74LS151 features complementary W and Y out-
puts.

Features

Select one-of-eight data lines

Performs parallel-to-serial conversion

Permits multiplexing from N lines to one line

Also for use as Boolean function generator

Typical average propagation delay time data input to 
W output 12.5 ns

Typical power dissipation 30 mW

 

Ordering Code:

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Truth Table

=

 HIGH Level

=

 LOW Level

=

 Don't Care

D0, D1...D7 

=

 the level of the respective D input

Order Number

Package Number

Package Description

DM74LS151M

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

DM74LS151SJ

M16D

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

DM74LS151N

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Inputs

Outputs

Select

Strobe

Y

W

C

B

A

S

X

X

X

H

L

H

L

L

L

L

D0

D0

L

L

H

L

D1

D1

L

H

L

L

D2

D2

L

H

H

L

D3

D3

H

L

L

L

D4

D4

H

L

H

L

D5

D5

H

H

L

L

D6

D6

H

H

H

L

D7

D7

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2

DM74LS151

Logic Diagrams

See Address Buffers

Address Buffers

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DM74LS151

Absolute Maximum Ratings

(Note 1)

Note 1: 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 tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.

Recommended Operating Conditions

Electrical Characteristics 

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

Note 2: All typicals are at V

CC

 

=

 5V, T

A

 

=

 25

°

C.

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

Note 4: I

CC

 is measured with all outputs OPEN, strobe and data select inputs at 4.5V, and all other inputs OPEN.

Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range

0

°

C to 

+

70

°

C

Storage Temperature Range

65

°

C to 

+

150

°

C

Symbol

Parameter

Min

Nom

Max

Units

V

CC

Supply Voltage

4.75

5

5.25

V

V

IH

HIGH Level Input Voltage

2

V

V

IL

LOW Level Input Voltage

0.8

V

I

OH

HIGH Level Output Current

0.4

mA

I

OL

LOW Level Output Current

8

mA

T

A

Free Air Operating Temperature

0

70

°

C

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 2)

V

I

Input Clamp Voltage

V

CC

 

=

 Min, I

I

 

=

 

18 mA

1.5

V

V

OH

HIGH Level 

V

CC

 

=

 Min, I

OH

 

=

 Max

2.7

3.4

V

Output Voltage

V

IL

 

=

 Max, V

IH

 

=

 Min

V

OL

LOW 

Level V

CC

 

=

 Min, I

OL

 

=

 Max

0.35

0.5

Output Voltage

V

IL

 

=

 Max, V

IH

 

=

 Min

V

I

OL

 

=

 4 mA, V

CC

 

=

 Min

0.25

0.4

I

I

Input Current @ Max Input Voltage

V

CC

 

=

 Max, V

I

 

=

 7V

0.1

mA

I

IH

HIGH Level Input Current

V

CC

 

=

 Max, V

I

 

=

 2.7V

20

µ

A

I

IL

LOW Level Input Current

V

CC

 

=

 Max, V

I

 

=

 0.4V

0.4

mA

I

OS

Short Circuit Output Current

V

CC

 

=

 Max (Note 3)

20

100

mA

I

CC

Supply Current

V

CC

 

=

 Max (Note 4)

6

10

mA

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DM74LS151

Switching Characteristics 

at V

CC

 

=

 5V and T

A

 

=

 25

°

From (Input)

R

L

 

=

 2 k

Symbol

Parameter

To (output)

C

L

 

=

 15 pF

C

L

 

=

 50 pF

Units

Min

Max

Min

Max

t

PLH

Propagation Delay Time

Select 

43

46

ns

LOW-to-HIGH Level Output

(4 Levels) to Y

t

PHL

Propagation Delay Time

Select 

30

36

ns

HIGH-to-LOW Level Output

(4 Levels) to Y

t

PLH

Propagation Delay Time

Select 

23

25

ns

LOW-to-HIGH Level Output

(3 Levels) to W

t

PHL

Propagation Delay Time

Select 

32

40

ns

HIGH-to-LOW Level Output

(3 Levels) to W

t

PLH

Propagation Delay Time

Strobe 

42

44

ns

LOW-to-HIGH Level Output

to Y

t

PHL

Propagation Delay Time

Strobe 

32

40

ns

HIGH-to-LOW Level Output

to Y

t

PLH

Propagation Delay Time

Strobe 

24

27

ns

LOW-to-HIGH Level Output

to W

t

PHL

Propagation Delay Time

Strobe 

30

36

ns

HIGH-to-LOW Level Output

to W

t

PLH

Propagation Delay Time

D0 thru D7 

32

35

ns

LOW-to-HIGH Level Output

to Y

t

PHL

Propagation Delay Time

D0 thru D7 

26

33

ns

HIGH-to-LOW Level Output

to Y

t

PLH

Propagation Delay Time

D0 thru D7 

21

25

ns

LOW-to-HIGH Level Output

to W

t

PHL

Propagation Delay Time

D0 thru D7 

20

27

ns

HIGH-to-LOW Level Output

to W

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DM74LS151

Physical Dimensions 

inches (millimeters) unless otherwise noted

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

Package Number M16A

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DM74LS151

Physical Dimensions 

inches (millimeters) unless otherwise noted (Continued)

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

Package Number M16D

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DM74LS151

 1-
of-
8

 Li
ne 

Data 

Sele

ctor

/Mult

ip

lexer

Physical Dimensions 

inches (millimeters) unless otherwise noted (Continued)

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Package Number N16E

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

LIFE SUPPORT POLICY

FAIRCHILD’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 FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.

2. A critical component in any component of a life support

device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.

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Maker
Fairchild
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