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M74HC157 Datasheet(PDF) 2 Page - STMicroelectronics

Part # M74HC157
Description  QUAD 2 CHANNEL MULTIPLEXER
PDF  9 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC157 Datasheet(HTML) 2 Page - STMicroelectronics

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M74HC157
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INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
LOGIC DIAGRAM
PIN No
SYMBOL
NAME AND FUNCTION
1
SELECT
Common Data Select
Input
2, 5, 11, 14
1A to 4A
Data Inputs From
Source A
3, 6, 10, 13
1B to 4B
Data Inputs From
Source B
4, 7, 9, 12
1Y to 4Y
Multiplexer Output
15
STROBE
Strobe Inputs
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
INPUTS
OUTPUTS
STROBE
SELECT
A
B
Y
HX
XX
L
LLL
X
L
LL
H
X
H
LH
X
L
L
LH
X
H
H



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