Patent ID: 8248741

Claim:
An electrostatic discharge protection device, comprising: a silicon-controlled rectifier including an anode, a cathode, and a first gate, and a parasitic capacitance between the first gate and an internal node of the silicon-controlled rectifier; a shunt path connecting the cathode and the first gate of the silicon-controlled rectifier, wherein the shunt path includes an input terminal that is different than the first gate of the silicon-controlled rectifier, the input terminal configured to receive an enabling signal that is different than an activation signal received by the first gate of the silicon-controlled rectifier, and wherein the shunt path is configured to: allow a conductive path for a displacement current from the parasitic capacitance responsive to the enabling signal being enabled; and allow the silicon-controlled rectifier to enter a low resistance state responsive to the enabling signal being disabled and a breakdown voltage is applied between the anode and the cathode; and a first resistor coupled between the input terminal of the shunt path and the cathode of the silicon-controlled rectifier.