Onkyo TX-NR801/E Service Manual page 56

IC BLOCK DIAGRAMS AND DESCRIPTIONS
Q2101 74HC4051AF(8-channel analog multiplexer/demultiplexer)
4
1
6
2
COM
3
7
4
5
5
INH
6
V
7
EE
GND
8
Q130 74HCU04F(Hex Inverters)
1A 1
2
1Y
3
2A
4
2Y
3A 5
3Y 6
GND 7
(TOP VIEW)
CONTROL INPUTS
16
Vcc
INHIBIT C
L L
15
2
L L
L L
14
1
L L
L H
13
0
L H
L H
12
3
L H
11
H X
A
Truth table
10
B
9
C
Truth table
Vcc
14
A
13 6A
L
12 6Y
H
5A
11
5Y
10
4A
9
4Y
8
56
OUTPUT
B A "ON"
L L 0
L H 1
H L 2
H H 3
L L 4
L K 5
H L 6
H H 7
X X NONE
Y
H
L
TX-NR801/E