Harman Kardon AVR 7200 - Page 112

Triple 2-channel analog multiplexer /
demultiplexer
BU4053BC / BU4053BCF / BU4053BCFV
The BU4053BC, BU4053BCF, and BU4053BCFV are multiplexers / demultiplexers capable of selecting and combin-
ing analog signals and digital signals in a 2 ch × 3 configuration. Inhibit signals and control signals are used to turn
on the switch corresponding to each of the channels. In addition, even if the logical amplitude (V
DD-VSS) of the control
signal is low, signals with a large amplitude (V
DD-VEE) can be switched.
Also, as each switch has a low ON resistance, it can be connected to a low impedance circuit.
•
Logic circuit diagram
•
Truth table
VDD (16)
INH (6)
B (10)
A (11)
C (9)
VSS (8)
VEE (7)
Z0 (5)
Z1 (3)
(4) Z
Y0 (2)
Y1 (1)
(15) Y
X0 (12)
X1 (13)
(14) X
LEVEL
CONVERTER
BINARY TO 1of 2
DECODER WITH INH
INH A B C ON SWITCH
L LLL
LHLL
LLHL
LHHL
LLLH
LHLH
LLHH
L HHH
H X X X NONE
X
0 Y0 Z0
X1 Y0 Z0
X0 Y1 Z0
X1 Y1 Z0
X0 Y0 Z1
X1 Y0 Z1
X0 Y1 Z1
X1 Y1 Z1
X: Irrelevant
•
Block diagram
Y1
1
Y0
2
Z1
3
Z
4
Z0
5
INH
6
VEE
7
VSS
8
16
15
14
13
12
11
10
9
VDD
Y
X
X
1
X0
A
B
C
C
Z
INH
V
EE
Y
X
A
B
Y0
Z1
Z0
Y1
X1
X0
AVR7200 harman/kardon
112