Datasheet 74LV251PW, 74LV251N, 74LV251DB, 74LV251D Datasheet (Philips)

INTEGRATED CIRCUITS

74LV251

8-input multiplexer (3-State)

Product specification
Supersedes data of 1997 Apr 10
IC24 Data Handbook

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1998 May 20

Philips Semiconductors Product specification

74L V2518-input multiplexer (3-State)

FEA TURES

•Optimized for low voltage applications: 1.0 to 3.6 V

•Accepts TTL input levels between V

•Typical V

T

amb

•Typical V

T

amb

(output ground bounce) < 0.8 V at V

OLP

= 25°C

(output VOH undershoot) > 2 V at V

OHV

= 25°C

= 2.7 V and V

CC

CC

CC

CC

= 3.3 V,

= 3.3 V,

•True and complement outputs

•Both outputs are 3-State for further multiplexer expansion

•Multifunction capability

•Permits multiplexing from n-lines to one line

•Output capability: standard

•I

category: MSI

CC

QUICK REFERENCE DATA

GND = 0 V; T

SYMBOL

t

PHL/tPLH

C

I

C

PD

NOTE:

1. C

is used to determine the dynamic power dissipation (PD in µW)

PD

= CPD × V

P

D

f

= input frequency in MHz; CL = output load capacitance in pF;

i

= output frequency in MHz; VCC = supply voltage in V;

f

o

 (C

L

= 25°C; tr = t

amb

Propagation delay
In to Y
In to Y
Sn to Y
S

to Y

n

Input capacitance 3.5 pF
Power dissipation capacitance per gate

2

× fi  (CL × V

CC

2

× V

× fo) = sum of the outputs.

CC

≤ 2.5 ns

f

PARAMETER CONDITIONS TYPICAL UNIT

2

× fo) where:

CC

= 3.6 V

CL = 15 pF;
VCC = 3.3 V

VCC = 3.3 V
VI = GND to V

DESCRIPTION

The 74LV251 is a low-voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT251.

The 74LV251 is an 8-input multiplexer with 8 binary inputs (I
output enable input (OE
the eight binary inputs is selected by the select inputs and is routed to
the outputs (Y, Y). Both outputs are in the high impedance OFF-state
(Z) when the output enable input is HIGH, allowing multiplexer
expansion by tying the outputs.

1

CC

) and three select inputs (S0, S1, S2). One of

14
16
19
20

44 pF

to I7), an

0

ns

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. #

16-Pin Plastic DIL –40°C to +125°C 74LV251 N 74LV251 N SOT38-4
16-Pin Plastic SO –40°C to +125°C 74LV251 D 74LV251 D SOT109-1
16-Pin Plastic SSOP Type II –40°C to +125°C 74L V251 DB 74LV251 DB SOT338-1
16-Pin Plastic TSSOP Type I –40°C to +125°C 74LV251 PW 74LV251PW DH SOT403-1

1998 May 20 853–1967 19420

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Philips Semiconductors Product specification

74LV2518-input multiplexer (3-State)

PIN CONFIGURATION

1

I

3

2

I

2

3

I

1

4

I

0

5

Y

6

Y

7

QE

8

GND

LOGIC SYMBOL

S0 S1 S2

4

3

2

1

15

14

13

12

I

0

I

1

I

2

I

3

I

4

I

5

I

6

I

7

11 10 9

OE

7

Y

Y

16

15

14

13

12

11

10

9

SV00629

SV00630

PIN DESCRIPTION

V

CC

I

4

I

5

I

6

I

7

S

0

S

1

S

2

PIN

NUMBER

4, 3, 2, 1, 15,
14, 13, 12

5 Y Multiplexer output
6 Y Complementary multiplexer output

7 OE
8 GND Ground (0 V)

11, 10, 9 S0 to S2Select inputs
16 V

SYMBOL FUNCTION

I0 to I

Multiplexer inputs

7

3-State output enable input (active
LOW)

CC

Positive supply voltage

LOGIC SYMBOL (IEEE/IEC)

MUX

7

EN

11

10

5

6

15

14
13

12

0

0

G
9
4
3
2
1

7

2
0
1
2
3

4

5

6
7

5

6

SV00631

FUNCTIONAL DIAGRAM

4 3 2 1 15 14 13 12

I1I2I3I4I5I6I

I

0

S

11

0

S

10

S

9

OE

7

1998 May 20

1

2

MULTIPLEXER

7

Y

6

Y

5

SV00632

3

Philips Semiconductors Product specification

74LV2518-input multiplexer (3-State)

FUNCTION TABLE

INPUTS OUTPUTS

OE S

2

H X X X X X X X X X X X Z Z

L L L L L X X X X X X X H L
L L L L H X X X X X X X L H
L L L H X L X X X X X X H L
L L L H X H X X X X X X L H

L L H L X X L X X X X X H L
L L H L X X H X X X X X L H
L L H H X X X L X X X X H L
L L H H X X X H X X X X L H

L H L L X X X X L X X X H L
L H L L X X X X H X X X L H
L H L H X X X X X L X X H L
L H L H X X X X X H X X L H

L H H L X X X X X X L X H L
L H H L X X X X X X H X L H
L H H H X X X X X X X L H L
L H H H X X X X X X X H L H

NOTES:

H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state

S

1

S

0

I

0

I

1

I

2

I

3

I

4

I

5

I

6

I

7

Y Y

RECOMMENDED OPERATING CONDITIONS

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT

V

V

V

T

amb

tr, t

NOTE:

1. The LV is guaranteed to function down to V

DC supply voltage See Note 1 1.0 3.3 3.6 V

CC

Input voltage 0 – V

I

Output voltage 0 – V

O

Operating ambient temperature range in free air

Input rise and fall times

f

CC

See DC and AC

characteristics

VCC = 1.0V to 2.0V
VCC = 2.0V to 2.7V
VCC = 2.7V to 3.6V

= 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC = 5.5V.

–40
–40

–
–
–

–
–
–

CC
CC

+85

+125

500
200
100

ns/V

V
V

°C

1998 May 20

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Philips Semiconductors Product specification

voltage

voltage

V

V

V

V

74LV2518-input multiplexer (3-State)

ABSOLUTE MAXIMUM RATINGS

1, 2

In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0 V).

SYMBOL

V

CC

I

IK

I

OK

I

O

I

GND

I

CC

T

stg

P

TOT

DC supply voltage –0.5 to +4.6 V
DC input diode current VI < –0.5 or VI > VCC + 0.5V 20 mA
DC output diode current VO < –0.5 or VO > VCC + 0.5V 50 mA
DC output source or sink current

– standard outputs
DC VCC or GND current for types with

,

– standard outputs
Storage temperature range –65 to +150 °C

Power dissipation per package
– plastic DIL
– plastic mini-pack (SO)
– plastic shrink mini-pack (SSOP and TSSOP)

PARAMETER CONDITIONS RATING UNIT

–0.5V < VO < VCC + 0.5V 25 mA

50 mA

for temperature range: –40 to +125°C
above +70°C derate linearly with 12 mW/K
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K

750
500
400

mW

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .

2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

DC ELECTRICAL CHARACTERISTICS

Over recommended operating conditions. V oltages are referenced to GND (ground = 0 V).

LIMITS

SYMBOL P ARAMETER TEST CONDITIONS

VCC = 1.2 V 0.9 0.9

IH

HIGH level Input

VCC = 2.0 V 1.4 1.4

V

VCC = 2.7 to 3.6 V 2.0 2.0
VCC = 1.2 V 0.3 0.3

IL

LOW level Input

VCC = 2.0 V 0.6 0.6

V

VCC = 2.7 to 3.6 V 0.8 0.8

–IO = 100µA 1.2

IL;

–IO = 100µA 1.8 2.0 1.8

IL;

–IO = 100µA 2.5 2.7 2.5

IL;

–IO = 100µA 2.8 3.0 2.8

IL;

HIGH level output

OH

voltage; all outputs

VCC = 1.2 V; VI = VIH or V
VCC = 2.0 V; VI = VIH or V
VCC = 2.7 V; VI = VIH or V
VCC = 3.0 V; VI = VIH or V

HIGH level output

OH

voltage;
STANDARD

VCC = 3.0 V; VI = VIH or V

V

–IO = 6mA 2.40 2.82 2.20 V

IL;

outputs

IO = 100µA 0

IL;

IO = 100µA 0 0.2 0.2

IL;

IO = 100µA 0 0.2 0.2

IL;

IO = 100µA 0 0.2 0.2

IL;

LOW level output

OL

voltage; all outputs

VCC = 1.2 V; VI = VIH or V
VCC = 2.0 V; VI = VIH or V
VCC = 2.7 V; VI = VIH or V
VCC = 3.0 V; VI = VIH or V

LOW level output

OL

voltage;
STANDARD

VCC = 3.0 V; VI = VIH or V

V

IO = 6mA 0.25 0.40 0.50 V

IL;

outputs

-40°C to +85°C -40°C to +125°C

MIN TYP

1

MAX MIN MAX

UNIT

V

V

1998 May 20

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Philips Semiconductors Product specification

CONDITION

t

gy

Figure 1

ns

t

gy

Figure 2

ns

t

gy

Figure 1

ns

t

gy

Figure 2

ns

t

Figure 2

ns

t

Figure 2

ns

74LV2518-input multiplexer (3-State)

DC ELECTRICAL CHARACTERISTICS (Continued)

LIMITS

SYMBOL P ARAMETER TEST CONDITIONS

Input leakage

I

I

current

CC

Quiescent supply
current; MSI

I

VCC = 3.6 V; VI = VCC or GND 1.0 1.0 µA

VCC = 3.6 V; VI = VCC or GND; IO = 0 20.0 160 µA

Additional

CC

quiescent supply
current per input

VCC = 2.7 V to 3.6 V; VI = VCC – 0.6 V 500 850 µA

∆I

NOTE:

1. All typical values are measured at T

amb

= 25°C.

AC CHARACTERISTICS

GND = 0V; tr = tf = 2.5ns; CL = 50pF; RL = 1KΩ

SYMBOL PARAMETER WAVEFORM

PHL/tPLH

PHL/tPLH

PHL/tPLH

PHL/tPLH

PZH/tPZL

PHZ/tPLZ

NOTES:

1. Unless otherwise stated, all typical values are measured at T

2. Typical values are measured at V

Propagation delay
In to Y

Propagation delay
In to Y

Propagation delay
Sn to Y

Propagation delay
Sn to Y

3-State output disable time
OE to Y, Y

3-State output disable time
OE to Y, Y

CC

= 3.3 V.

VCC(V) MIN TYP1MAX MIN MAX

1.2 90

2.0 31 58 70

2.7 23 43 51

3.0 to 3.6 17

1.2 100

2.0 34 65 77

2.7 25 48 56

3.0 to 3.6 19

1.2 120

2.0 41 77 92

2.7 30 56 68

3.0 to 3.6 23

1.2 125

2.0 43 82 97

2.7 31 60 71

3.0 to 3.6 24

1.2 65

2.0 22 43 51

2.7 16 31 38

3.0 to 3.6 12

1.2 60

2.0 22 39 48

2.7 17 29 36

3.0 to 3.6 13

= 25°C

amb

-40°C to +85°C -40°C to +125°C

MIN TYP

1

MAX MIN MAX

LIMITS

–40 to +85 °C –40 to +125 °C

2

34 41

2

38 45

2

45 54

2

48 57

2

25 30

2

24 29

UNIT

UNIT

1998 May 20

6

Philips Semiconductors Product specification

74LV2518-input multiplexer (3-State)

AC WAVEFORMS

VM = 1.5 V at VCC ≥ 2.7 V

= 0.5 V × VCC at VCC < 2.7 V

V

M

V

and VOH are the typical output voltage drop that occur with the

OL

output load.

= VOL + 0.3 V at VCC ≥ 2.7 V

V

X

V

= VOL + 0.1 ×V

X

V

= VOH – 0.3 V at VCC ≥ 2.7V

Y

V

= VOH – 0.1 × VCC at VCC < 2.7 V

Y

In, Sn INPUT

Y OUTPUT

V

CC

GND

V

OH

V

OL

CC

t

at V

PHL

CC

< 2.7 V

V

M

V

M

Figure 1. Multiplexer input (In) and select input (Sn) to

output (Y) propagation delays.

t

PLH

SV00633

TEST CIRCUIT

V

CC

INPUT

OE

GND

V

CC

OUTPUT

LOW-to-OFF
OFF-to-LOW

V

V

OH

OUTPUT

HIGH-to-OFF
OFF-to-HIGH

GND

OL

V

outputs

enabled

M

t

PLZ

t

PHZ

V

X

V

Y

outputs

disabled

Figure 3. 3-State enable and disable times

t

PZL

t

PZH

V

M

V

M

outputs

enabled

SV00635

V

CC

, S

INPUT

I

n

n

Y OUTPUT

GND

V

OH

V

t

OL

PHL

V

M

t

PLH

V

M

SV00634

Figure 2. Multiplexer input (In) and the select input (Sn) to

output (Y

) propagation delays.

V

CC

PULSE

GENERATOR

V

I

D.U.T.

R

T

V

O

C

Test Circuit for switching times

DEFINITIONS

RT = Termination resistance should be equal to Z

= Load resistor

R

L

= Load capacitance includes jig and probe capacitance

C

L

TEST

t

PLH/tPHL

V

CC

< 2.7V V

Figure 4. Load circuitry for switching times.

50pF

L

of pulse generators.

OUT

V

I

CC

2.7V2.7–3.6V

RL= 1KΩ

SV00776

1998 May 20

7

Philips Semiconductors Product specification

74LV2518–input multiplexer (3–State)

DIP16: plastic dual in-line package; 16 leads (300 mil) SOT38-4

1998 May 20

8

Philips Semiconductors Product specification

74LV2518–input multiplexer (3–State)

SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1

1998 May 20

9

Philips Semiconductors Product specification

74LV2518–input multiplexer (3–State)

SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1

1998 May 20

10

Philips Semiconductors Product specification

74LV2518–input multiplexer (3–State)

TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1

1998 May 20

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Philips Semiconductors Product specification

74LV2518–input multiplexer (3–State)

DEFINITIONS

Data Sheet Identification Product Status Definition

Objective Specification

Preliminary Specification

Product Specification

Formative or in Design

Preproduction Product

Full Production

Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.

LIFE SUPPORT APPLICA TIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected

to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.

Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone [phone]

This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.

This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.

This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.

 Copyright Philips Electronics North America Corporation 1998

All rights reserved. Printed in U.S.A.

print code Date of release: 05-96
Document order number: 9397-750-04439

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1998 May 20

12