Harman Kardon NOCTURNE 210, Service Manual

Page: 82 / 135

8-channel analog multiplexer /
demultiplexer
BU4051BC / BU4051BCF / BU4051BCFV
The BU4051BC, BU4051BCF and BU4051BCFV are analog multiplexers / demultiplexers which use three-input digi-
tal signals for control via an 8-channel analog switch.
These products feature high on / off output voltage ratio and low crosstalk between analog switches.
•
Block diagram
X
4
CHANNEL
IN / OUT
COMMON
OUT / IN
1
X
6
2
X
3
X
7
4
X
5
5
INH
6
V
EE
7
V
SS
8
16
15
14
13
12
11
10
9
V
DD
X
2
X
1
X
0
X
3
A
B
C
C
X
6
X
X
7
X
5
INH
V
EE
X
2
X
1
X
0
X
3
A
B
CHANNEL
IN / OUT
CHANNEL
IN / OUT
X
4
•
Logic circuit diagram
•
Truth table
INH A B C ON SWITCH
L L L L X
0
L H L L X
1
L L H L X
2
L H H L X
3
L L L H X
4
L H L H X
5
L L H H X
6
L H H H X
7
H X X X NONE
X: Irrelevant
V
DD
(16)
INH (6)
A (11)
B (10)
C (9)
X
0
(13)
X
1
(14)
X
2
(15)
X
3
(12)
X
4
(1)
X
5
(5)
X
6
(2)
X
7
(4)
V
EE
(7)
V
SS
(8)
X
(3) COMMON
LEVEL
CONVERTER
BINARY TO 1 of 8
DECODER WITH INHIBIT
AVR210 harman/kardon
82