Over Voltage Tolerant Inputs of CY2CC910 Elaborated

Question: What is the meaning of "Over voltage tolerant input" as mentioned in CY2CC910 Datasheet?


"Over voltage tolerant" means that the input can receive a voltage swing above the operating supply voltage of the device without causing damage to the device and remaining functional. The  CY2CC910 input supports the following over voltages:
The input is tolerant to 2.5V when operated at 1.8V.

  The input is tolerant to 3.3V when operated at 2.5V.

  The input is tolerant to 5.0V when operated at 3.3V.

  This feature allows the device to act as a level translator in certain applications.