Patent ID: 9172243
Filing Date: 2015-10-27
Classification: H01L,H02H

Abstract:
1. An integrated circuit, comprising: a functional circuitry; an input/output (I/O) pad coupled to functional circuitry; an electrostatic discharge (ESD) protection shunting component coupled between the I/O pad and a reference node of the integrated circuit; a latch configured to turn on the ESD protection shunting component in response to an ESD signal and to turn off the ESD protection shunting component in response to a shut-off signal; an ESD detection circuit coupled with said I/O pad, the ESD detection circuit configured to provide the ESD signal to the latch which causes said latch to turn on the ESD protection shunting component; and an over-capability detection circuit including a current sensor coupled in series with the ESD protection shunting component, the over-capability detection circuit configured to provide the shut-off signal to the latch which causes said latch to turn off the ESD protection shunting component.