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Why is a CMOS switch not suitable for live insertion applications?

April 26, 2017applications CMOS insertion live suitable Switch

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Why is a CMOS switch not suitable for live insertion applications?

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During live insertion, at the moment of connection, the voltage at Vcc pin is 0V due to the delay caused by the bypass capacitance. The PN junction of the PMOS transistor in the switch core will forward the signal from the back plane to ground through the Vcc pin at 0V. Refer to Application Brief 39 for more details.