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M74HC238 데이터시트(PDF) 2 Page - STMicroelectronics

부품명 M74HC238
상세설명  3 TO 8 LINE DECODER
PDF  10 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC238 데이터시트(HTML) 2 Page - STMicroelectronics

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M74HC238
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INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
PIN No
SYMBOL
NAME AND FUNCTION
1, 2, 3
A, B, C
Data Inputs
4, 5
G2A G2B
Enable Input (Active
LOW)
6
G1
Data Enable Input (Active
HIGH)
15, 14, 13,
12, 11, 10, 9,
7
Y0 to Y7
Outputs
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
INPUTS
OUTPUTS
SELECTED
OUTPUT
ENABLE
SELECT
G2B
G2A
G1
C
B
A
Y0Y1
Y2
Y3
Y4Y5Y6
Y7
X
X
L
X
X
X
L
LLL
LL
LL
NONE
X
H
X
X
X
X
L
LLL
LL
LL
NONE
H
X
X
X
X
X
L
LLL
LL
LL
NONE
LL
H
L
L
L
H
LLL
LL
LL
Y0
LL
H
L
L
H
L
H
LL
LL
LL
Y1
LL
H
L
H
L
L
L
H
L
LL
LL
Y2
LL
H
L
H
H
L
L
L
H
LL
LL
Y3
LL
H
H
L
L
L
LLL
H
L
LL
Y4
LL
H
H
L
H
L
LLL
L
H
LL
Y5
LL
H
H
H
LL
LLL
LL
H
L
Y6
LL
H
H
H
H
L
LLL
LL
L
H
Y7



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