Beko E1 CHASSIS, Руководство по обслуживанию

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15
HEF 4053B
DESCRIPTION
The HEF4053B is a triple 2-channel
analogue multiplexer/demulti plexer with a
common enable input (E). Each
multiplexer/demultiplexer has two
independent inputs/outputs (Y0 and Y1), a
common input/output (Z), and select inputs
(Sn). Each also contains two-bidirectional
analogue switches, each with one side
connected to an independent input/output
(Y0 and Y1) and the other side connected
to a common input/output (Z). With E LOW,
one of the two switches is selected (low
impedance ON-state) by Sn. With E HIGH,
all switches are in the high impedance
OFF-state, independent of SA to SC.
VDD and VSS are the supply voltage
connections for the digital control inputs
(SA to SC and E). The VDD to VSS
range is 3 to 15 V. The analogue
inputs/outputs (Y0, Y1 and Z) can swing
between VDD as a positive limit and
VEE as a negative limit. VDD
−
VEE may
not exceed 15 V. For operation as a
digital multiplexer/demultiplexer, VEE is
connected to VSS (typically ground).