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74VHC157 Datasheet(PDF) 2 Page - STMicroelectronics

Part # 74VHC157
Description  QUAD 2 CHANNEL MULTIPLEXER
Download  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHC157 Datasheet(HTML) 2 Page - STMicroelectronics

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Figure 2: Input Equivalent Circuit
Table 2: Pin Description
Table 3: Truth Table
X : Don’t care
Figure 3: Logic Diagram
PIN N°
SYMBOL
NAME AND FUNCTION
1
SELECT
Common Data Select
Inputs
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
INPUTS
OUTPUT
STROBE
SELECT
A
B
Y
H
XXX
L
LLL
X
L
LL
H
X
H
LH
X
L
L
LH
X
H
H


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