Electrostatic discharge protection circuit comprising reverse blocking diode and semiconductor device comprising the same

Abstract

An electrostatic discharge protection circuit includes a first diode including an anode connected to an input / output pad and a cathode, and configured to form an electrostatic discharge path of a positive charge generated in the input / output pad, a second diode connected between the input / output pad and a second supply voltage terminal to which a ground voltage is applied, and configured to form an electrostatic discharge path of a negative charge generated in the input / output pad, a first resistor configured to limit a current flowing between the input / output pad and an input / output driver, and a reverse blocking diode connected between the first diode and a first supply voltage terminal to which a first supply voltage greater than the ground voltage is applied. The input / output driver is connected between the first supply voltage terminal and the second supply voltage terminal.

Images