How can I use PI5Cxx switches for 5V to 3.3V voltage translation?

When using the PI5Cxx switch family for 5V to 3.3V voltage translation, apply a 4.1V to 4.2V voltage to the Vcc pin of the PI5Cxx switch, by either inserting a diode with 0.8V forwarding V-drop in series to the Vcc pin and with a 2.2K resistor between the Vcc and GND pins; or, using a voltage divider consisted of two resistors between the Vcc and ground generating a 4.1V voltage to the Vcc pin of the PI5Cxx switch. Adjust the Vcc level until the high level of the output signal of the switch is 3.3V. Both approaches need a 0.47uf between the Vcc and GND pins for de-coupling.

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