Abstract: A high voltage transmitter integrated circuit for ultrasound medical imaging is implemented using 90nm technology.The high voltage transmitter consists of level shifter and output drivers to increase the voltage, with reduced delay,that drives the capacitive micro-machined ultrasound transducer to produce acoustic signal in medical applications .The performance of various level shifters are compared. The level shifter generates 20V pulses from the input of 10V. The level shifter is designed using 90nm technology in HSPICE.