Marantz Duetto SR110, Service Manual

Page: 22 / 32

30
IC105:BU4052B
Block diagram
Y
0
1
Y
2
2
COMMON
Y
3
Y
3
4
Y
1
5
INH
6
V
EE
7
V
SS
8
16
15
14
13
12
11
10
9
V
DD
X
2
X
1
X
X
0
X
3
A
B
Y
0
B
Y
OUT / IN
INH
V
EE
X
OUT / IN
A
COMMON
Y
2
Y
3
Y
1
X
2
X
1
X
0
X
3
Logic circuit diagram Truth table
V
DD
(16)
INH (6)
A (10)
B (9)
X
0
(12)
X
1
(14)
X
2
(15)
X
3
(11)
V
SS
(8)
V
EE
(7)
(13) X
Y
0
(1)
Y
1
(5)
Y
2
(2)
Y
3
(4)
(3) Y
LEVEL
CONVERTER
BINARY TO 1of 4
DECODER WITH INH
INH A B ON SWITCH
L L L X
0
Y
0
L H L X
1
Y
1
L L H X
2
Y
2
L H H X
3
Y
3
H X X NONE
X: Irrelevant