Apparatus and methods are provided directed to a device including at least one ultrasonic transducer a multi level pulser coupled to the at least one ultrasonic transducer the multi level pulser including a plurality of input terminals configured to receive respective input voltages an output terminal configured to provide an output voltage and a signal path between a first input terminal and the output terminal including a first transistor having a first conductivity type coupled to a first diode and in parallel a second transistor having a second conductivity type coupled to a second diode.
