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74LVX257 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. 74LVX257
Description  LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER (3-STATE) WITH 5V TOLERANT INPUTS
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74LVX257 Datasheet(HTML) 2 Page - STMicroelectronics

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74LVX257
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INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X :Don‘t Care
Z : High Impedance
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
PIN No
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
3 State Multiplexer
Outputs
15
OE
3 State Output Enable
Inputs (Active LOW)
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
INPUTS
OUTPUT
OE
SELECT
A
B
Y
HX
XX
Z
LLL
X
L
LL
H
X
H
LH
X
L
L
LH
X
H
H


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