The major benefit of this device is it frees up the Schmitt-Trigger Action Allows Slow Input processor from having to scan the keypad for presses and releases. This provides power and bandwidth Transition and Better Switching Noise savings. The TCA8418 is also ideal for usage with Immunity at the SCL and SDA Inputs: Typical processors that have limited GPIOs. Vhys at 1.8 V is 0.18 V