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74LCX257 데이터시트(PDF) 2 Page - STMicroelectronics

부품명 74LCX257
상세설명  LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS AND OUTPUTS (3-STATE)
PDF  13 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74LCX257 데이터시트(HTML) 2 Page - STMicroelectronics

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Figure 2: Input And Output Equivalent Circuit
Table 2: Pin Description
Table 3: Truth Table
X : Don’t Care
Z : High Impedance
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
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
H
XXX
Z
LLL
X
L
LL
H
X
H
LH
X
L
L
LH
X
H
H



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