74HC157D 参数 Datasheet PDF下载

NXP Semiconductors

74HC157; 74HCT157

Quad 2-input multiplexer

5.2 Pin description

Table 2.

Symbol

S

1I0 to 4I0

1I1 to 4I1

1Y to 4Y

GND

E

V

CC

Pin description

Pin

1

2, 5, 11, 14

3, 6, 10, 13

4, 7, 9, 12

8

15

16

Description

common data select input

data inputs from source 0

data inputs from source 1

multiplexer outputs

ground (0 V)

enable input (active LOW)

supply voltage

6. Functional description

Table 3.

Input

E

H

L

L

L

L

[1]

Function table

Output

S

X

L

L

H

H

nI0

X

L

H

X

X

nI1

X

X

X

L

H

nY

L

L

H

L

H

H = HIGH voltage level;

L = LOW voltage level;

X = don’t care.

7. Limiting values

Table 4.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol

V

CC

I

IK

I

OK

I

O

I

CC

I

GND

T

stg

P

tot

Parameter

supply voltage

input clamping current

output clamping current

output current

supply current

ground current

storage temperature

total power dissipation

SO16 package

TSSOP16 package

DHVQFN16 package

[1]

[2]

P

tot

derates linearly with 8 mW/K above 70

C.

P

tot

derates linearly with 5.5 mW/K above 60

C.

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2010. All rights reserved.

Conditions

V

I

<

0.5

V or V

I

> V

CC

+ 0.5 V

V

O

<

0.5

V or V

O

> V

CC

+ 0.5 V

V

O

=

0.5

V to (V

CC

+ 0.5 V)

Min

0.5

-

-

-

-

-

65

Max

+7

20

20

25

+50

50

+150

500

500

500

Unit

V

mA

mA

mA

mA

mA

C

mW

mW

mW

T

amb

=

40 C

to +125

C

-

-

-

74HC_HCT157

Product data sheet

Rev. 3 — 31 December 2010

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