Onkyo DX-C34 Service Manual page 35

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IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
Q153: TC74VHCT00AF
(Quad 2-input NAND gate)
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
7
GND
14
Vcc
13
4B
12
4A
Truth table
11
4Y
A
B
L
L
10
3B
L
H
9
3A
H
L
H
H
8
3Y
Y
H
H
H
L
DX-C34

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