1
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.
•
Block diagram
X4
CHANNEL
IN / OUT
COMMON
OUT / IN
1
X6 2
X 3
X7 4
X5 5
INH 6
VEE 7
VSS 8
16
15
14
13
12
11
10
9
VDD
X2
X1
X0
X3
A
B
C
C
X6
X
X7
X5
INH
VEE
X2
X1
X0
X3
A
B
CHANNEL
IN / OUT
CHANNEL
IN / OUT
X4
•
Logic circuit diagram
•
Truth table
INH A B C ON SWITCH
L LLL X0
LHLL X1
L LHL X2
LHHL X3
LLLHX4
L HLH X5
LLHHX6
L HHH X7
H X X X NONE
X: Irrelevant
VDD (16)
INH (6)
A (11)
B (10)
C (9)
X0 (13)
X1 (14)
X2 (15)
X3 (12)
X4 (1)
X5 (5)
X6 (2)
X7 (4)
VEE (7)
VSS (8)
X
(3) COMMON
LEVEL
CONVERTER
BINARY TO 1 of 8
DECODER WITH INHIBIT