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| HCF4051B_02 Datasheet, PDF (6/10 Pages) STMicroelectronics – SINGLE 8-CHANNEL ANALOG MULTIPLEXER/DEMULTIPLEXER | |||
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HCF4051B
TYPICAL BIAS VOLTAGES
The ADDRESS (digtal-control inputs) and INHIBIT logic levels are : "0"=VSS and "1"=VDD. The analog signal (through the TG) may swing
from VEE to VDD
SPECIAL CONSIDERATIONS
Control of analog signals up to 20V peak to peak
can be achieved by digital signal amplitudes of 4.5
to 20V (if VDD - VSS = 3V, a VDD - VEE of up to 13V
can be controlled; for VDD - VEE level differences
above 13V, a VDD - VSS of at least 4.5V is
required. For example, if VDD = +5, VSS = 0, and
VEE = -13.5, analog signals from -13.5V to 4.5V
can be controlled by digital inputs of 0 to 4.5V. In
certain applications, the external load resistor
current may include both VDD and signal-line
components. To avoid drawing VDD current when
switch current flows into the transmission gate
inputs, the voltage drop across the bidirectional
switch must not exceed 0,8V (calculated from RON
values shown in DC SPECIFICATIONS). No VDD
current will flow through RL if the switch current
flows into lead 3.
TEST CIRCUIT
CL = 50pF or equivalent (includes jig and probe capacitance)
RL = 200Kâ¦
RT = ZOUT of pulse generator (typically 50â¦)
6/10
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