IC CD40106 (Hex Schmitt Trigger Inverter)

The CD40106 is a hex inverter Schmitt trigger, meaning it has 6 inverted Schmitt triggers inside it. A Schmitt trigger is used to avoid the problem of hysteresis. It can also be used to smoothen a noisy single into a sharp one. Schmitt trigger gate can convert sinusoidal or triangular wave to square wave. It can also be used as a logic inverter if needed. A Schmitt trigger is also useful for debouncing a push button or other noisy input devices.

So if you are looking for an IC which can help you to get of switching noise or to create sharp square wave signals based on an input signal then this IC could be the right choice for you.