Processor-based systems, memories, signal driver circuits, and methods of generating an output signal are disclosed. One such signal driver circuit includes a signal driver configured to generate an output signal at an output node in response to an input signal and a transistor coupled to the signal driver that is configured to couple and decouple the output node and the voltage supply according to a control signal. A voltage comparator circuit coupled to the output node and the transistor is configured to generate the control signal to control coupling and decoupling of the output node and the voltage supply through the transistor based on a voltage of the output signal relative to the reference voltage.