Standard ICs
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.
鈥?/div>
Block diagram
X
4
1
CHANNEL
IN / OUT
X
6
COMMON
OUT / IN
2
X
4
X
3
4
X
6
X
X
7
CHANNEL
IN / OUT
X
5
5
X
7
X
5
INH
INH
6
7
V
EE
C
V
EE
10 B
9
X
2
X
1
X
0
X
3
A
B
11 A
13 X
0
14 X
1
CHANNEL
IN / OUT
16 V
DD
15 X
2
12 X
3
V
SS
8
C
鈥?/div>
Logic circuit diagram
V
DD
(16)
INH (6)
A (11)
B (10)
C (9)
V
SS
(8)
V
EE
(7)
X
0
(13)
X
1
(14)
X
2
(15)
X
3
(12)
X
4
(1)
X
5
(5)
X
6
(2)
X
7
(4)
LEVEL
CONVERTER
鈥?/div>
Truth table
INH
L
A
L
H
L
H
L
H
L
H
X
B
L
L
H
H
L
L
H
H
X
C
L
L
L
L
H
H
H
H
X
ON SWITCH
X
0
X
1
X
2
X
3
X
4
X
5
X
6
X
7
NONE
L
L
L
L
X
(3) COMMON
BINARY TO 1 of 8
DECODER WITH INHIBIT
L
L
L
H
X: Irrelevant
1
next