HC157 查看數據表（PDF） - STMicroelectronics

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HC157

HC158 QUAD 2 CHANNEL MULTIPLEXER (INV.) HC157 QUAD 2 CHANNEL MULTIPLEXER

STMicroelectronics 

M54/M74HC157 M54/M74HC158

CHIP CARRIER

HC157

HC158

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION (for HC157)

PIN No

1

2, 5, 11, 14

3, 6, 10, 13

4, 7, 9, 12

15

8

16

SYMBOL

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 Output

Strobe Input

Ground (0V)

Positive Supply Voltage

PIN DESCRIPTION (for HC158)

PIN No

1

2, 5, 11, 14

3, 6, 10, 13

4, 7, 9, 12

15

8

16

SYMBOL

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 Output

Strobe Input

Ground (0V)

Positive Supply Voltage

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