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| CD4066B-Q1_14 Datasheet, PDF (11/17 Pages) Texas Instruments – CMOS QUAD BILATERAL SWITCH | |||
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www.ti.com
APPLICATION INFORMATION
CD4066B-Q1
SCHS383 â APRIL 2011
In applications that employ separate power sources to drive VDD and the signal inputs, the VDD current capability
should exceed VDD/RL (RL = effective external load of the four CD4066B-Q1 bilateral switches). This provision
avoids any permanent current flow or clamp action on the VDD supply when power is applied or removed from the
CD4066B-Q1.
In certain applications, the external load-resistor current can include both VDD and signal-line components. To
avoid drawing VDD current when switch current flows into terminals 1, 4, 8, or 11, the voltage drop across the
bidirectional switch must not exceed 0.8 V (calculated from ron values shown).
No VDD current will flow through RL if the switch current flows into terminals 2, 3, 9, or 10.
Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s) :CD4066B-Q1
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