What type of signal does a Schmitt trigger output?

A Schmitt trigger is designed to convert an analog input signal that may have noise or fluctuations into a clean digital output signal. Its primary characteristic is that it has two distinct threshold voltage levels: one for switching the output from low to high (turning on) and another for switching it back from high to low (turning off). This hysteresis ensures that the output only changes state when the input crosses these defined thresholds, providing a clear and stable output.

The result of this operation is a digital signal that represents binary states (high and low), making it ideal for applications in digital electronics where noise immunity and sharp transitions between states are crucial. Unlike analog signals, which can vary continuously, the Schmitt trigger's output is distinctly defined as either a high (typically close to the supply voltage) or a low (near ground), reinforcing its function in digital circuits.

Therefore, the Schmitt trigger’s output is classified unequivocally as a digital signal.