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74VHC157 Datasheet(PDF) 2 Page - STMicroelectronics

No. de pieza 74VHC157
Descripción Electrónicos  QUAD 2 CHANNEL MULTIPLEXER
PDF  9 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHC157 Datasheet(HTML) 2 Page - STMicroelectronics

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INPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUT
OUT PUT
STROBE
SELE CT
A
B
Y
H
X
XXL
LLLX
L
LL
H
X
H
LH
X
L
L
LH
X
H
H
X:”H” or ”L”
PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCT ION
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 Outputs
15
STROBE
Strobe Input
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
LOGIC DIAGRAM
74VHC157
2/9



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