JVC AX-M9000, Руководство по обслуживанию

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AX-M9000
1-16
TC74HC238AF-X(IC525) : Line recorder
1
2
3
4
5
6
7
9
10
11
12
13
14
A
B
C
G2A
G2B
G1
GND
Vcc
Y0
Y1
Y2
Y3
Y4
Y5
(TOP VIEW)
8
Y7
15
16
Y6
INPUTS
ENABLE
SELECT
OUTPUTS
SELECTED OUTPUT
G1 G2A G2B C
B
A
L
L L L L L
L
L
L L
L L L
L L L
L
L L L L
L L
L L
L L
L
L
X
X
X
X
X
X X
X X X X
X
X
X X
H
H
H
H
H
H
H
H
H
H H
H
H H
H
H
H
H
H
H
H
H
L L L L L L L L
L L L L L L L L
L L L L L L L L
L L L L L L L
L L L L L L
L L L L L
L L L L
L L L L L L L
L L L
L L
L L
L
L
L L L L L
L L L L L L
L L L L L L L
NONE
NONE
NONE
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
H
H
H
H
H
H
H
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
A
B
C
1
2
3
SELECT
INOUT
ENABLE
INPUTS
G2A
G2B
G1
4
5
6
15
14
13
12
11
10
9
7
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
DATA
OUTPUTS
1. Pin layout
3. Block diagram
X : Don't Care
2. Truth table