JVC RX-E112RSL Service Manual page 20

RX-E112RSL/RX-E111RSL
TC74HC08AF (IC611) : AND gate
1. Pin layout
1A 1
1B
2
1Y
3
2A
4
2B 5
2Y 6
GND
7
TC74HC4072AF (IC612) : OR gate
1. Pin layout
1Y 1
1A 2
1B
3
1C
4
1D
5
NC 6
GND 7
TC74HC4053A (IC515) : Multiplexer
1. Pin layout
1Y
1 16
0Y 2
15
1Z
3 14
Z-COM 4
13
0Z
5 12
INH 6
11
V
7 10
EE
GND 8
9
1-20
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2. Truth table
A
14 Vcc
L
L
13 4B
H
12 4A
H
11 4Y
10 3B
9 3A
8 3Y
2. Truth table
A B
14 Vcc
H X
X H
13 2Y
X X
12 2D
X X
L L
11 2C
X : Don't care
10 2B
9 2A
8 NC
2. Truth table
CONTROL INPUTS
Vcc
INHIBIT
Y-COM
L
X-COM
L
1X
L
0X
L
A
L
B
L
C
L
L
H
X: Don't Care.
B Y
L L
H L
L L
H H
C D Y
X X H
X X H
H X H
X H H
L L L
"ON" CHANNEL
C B A
L L L
0X, 0Y, 0Z
L L H
1X, 0Y, 0Z
L H L
0X, 1Y, 0Z
L H H
1X, 1Y, 0Z
H L L
0X, 0Y, 1Z
H L H
1X, 0Y, 1Z
H H L
0X, 1Y, 1Z
H H H
1X, 1Y, 1Z
X X X
NONE