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What is the cause of the excessive Icc current seen in analog switch application with 8V (or above) Vcc and 3.3V/5V control signal?

April 26, 2017analog application cause ICC seen Switch Vcc

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What is the cause of the excessive Icc current seen in analog switch application with 8V (or above) Vcc and 3.3V/5V control signal?

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When the Vcc is 8V or above, a 3.3V/5V-control signal will turn on both the NMOS transistor and the PMOS transistor in the driver between the control pin and the gate of the switch. Thus, an excessive current from Vcc will pass through the PMOS and the NMOS to ground.