A disclosed delay circuit includes a plurality of Schmitt triggers that are serially coupled. A first Schmitt trigger of the plurality of Schmitt triggers is configured to receive an input signal. An output control circuit is coupled to receive output signals of two or more Schmitt triggers of the plurality of Schmitt triggers, the output control circuit configured to select a signal from one of the one or more Schmitt triggers as an output signal. The output signal is a delayed version of the input signal.