74LCX157T(1999) 데이터 시트보기 (PDF) - STMicroelectronics

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74LCX157T
(Rev.:1999)

LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS

STMicroelectronics 

74LCX157

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No

1

2, 5, 11, 14

3, 6, 10, 13

4, 7, 9, 12

15

8

16

S YM BO L

SELECT

1A to 4A

1B to 4B

1Y to 4Y

STROBE

GND

VCC

NAME AND FUNCTION

Common Data Select Input

Data Inputs From

Source A

Data Inputs From

Source B

Multiplexer Outputs

Strobe Input

Ground (0V)

Positive Supply Voltage

TRUTH TABLE

INPUT

STROBE SELECT A

H

X

X

L

L

L

L

L

H

L

H

X

L

H

X

X:”H” or ”L”

LOGIC DIAGRAM

OUTPUT

B

Y

X

L

X

L

X

H

L

L

H

H

2/9

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