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1.4 Electronic switch circuit HEF4053
Triple 2-channel Analog
Multiplexer/Demultiplexer
1). Description
The HEF4053 is a triple 2 -channel analog
multiplexer/demultiplexer with a common enable
input (
). Each multiplexer/demultiplexer has two
E
indepen-
dent inputs/outputs (Y
and Y
0
input/output (Z), and select inputs (Sn). Each also
contains two-bidirectional analog switches, each
with one side connected to an independent
input/output (Y
and Y
) and the other side
0
1
connected to a common input/output (Z).
With (
) LOW, one of the two switches is selected
E
2). Block Diagram
SERVICE MANUAL
), a common
1
Fig.14 Functional Diagram
27
(low impedance ON-state) by Sn. With
HIGH, all switches are in the high impedance
OFF-state, independent of S
V
and V
are the supply voltage connections
DD
SS
for the digital control i nputs (S
The V
to V
range is 3 to 15V.The analog
DD
SS
inputs/outputs (Y
, Y
and Z) can swing
0
1
between V
as a positive limit and V
DD
negative limit. V
-V
may not exceed 15 V.
DD
EE
For operation as a digital
multipl e xer/demultiplexer, V
V
(typically ground).
SS
E
to S
.
A
C
to S
and
).
E
A
C
as a
EE
is connected to
EE
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