SEMICONDUCTOR DEVICE AND ELECTROSTATIC PROTECTING DEVICE

摘要

A semiconductor device, which is the present invention, includes a protection target circuit, multiple pads inputting and outputting an electric signal, and an electrostatic protection part connected to the protection target circuit and protecting the protection target circuit when a voltage higher than a preset voltage is applied through the pads. The electrostatic protection part includes N(N>=2) pieces of first discharging parts including at least one diode placed in a direction in which an anode connects to an input/output line and a cathode connects to a power line and N(N>=2) of second discharging parts including at least one diode placed in a direction in which the anode connects to an earthing line and the cathode connects to the input/output line. N pieces of the first discharging parts are separated from each other in parallel, N pieces of the second discharging parts are separated from each other in parallel, and the first and second discharging parts are connected to each other in parallel.