SEMICONDUCTOR DEVICE HAVING ELECTROSTATIC DISCHARGE PREVENTION CIRCUIT

摘要

PURPOSE: A semiconductor device having an electrostatic discharge prevention circuit is provided to protect the semiconductor device from an electrostatic discharge having a range broader than that of a conventional semiconductor device. CONSTITUTION: An external signal is applied to a signal input pad(111). A supply voltage line(121) transmits a supply voltage of a semiconductor device. A ground voltage line(131) transmits a ground voltage of the semiconductor device. The first Schottky diode(243) is connected between the signal input pad and the ground voltage line to discharge a negative electrostatic discharge inputted from the exterior so that the semiconductor device is prevented from being damaged by the electrostatic discharge.