JVC RX-DV3SL Service Manual page 25

TC7SET32FU (IC683) : Z-Input or gate
1. Pin layout / Block diagram
IN B 1
IN A 2
GND 3
TC74HCU08AF (IC612) : Inverter
1. Pin layout / Block diagram
TC74HC4072AF (IC611) : 4-Input gate
1. Pin layout & block diagram
1Y 1
1A 2
1B 3
1C 4
1D 5
NC 6
GND 7
BA15218F (IC303, 602, 603, 651, 652, 661, 671, 672) : Ope. amp.
1. Pin layout / Block diagram
OUT1
5 VCC
4 OUT Y
Vcc
14
2Y
13
2D
12
2C
11
2B
10
2A
9
NC
8
1
-IN1 2 -
1
+IN1 3
+
V 4
EE
TC74HCU04AF (IC621) : Inverter
1. Pin layout
2.The truth value table
A
B Y
L L
L
L
H L
H L
L
H
H H
2. Truth table
A D
B C Y
H X X X H
X X
H X H
X
X X H H
X H H
X X
L L
L L L
8 V
CC
7 OUT2
6 -IN2
-
2
5 +IN2
+
RX-DV3SL
2. Truth value
A Y
L H
H L
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