Patent ID: 7586721

Claim:
An ESD (electrostatic discharge) detection circuit, coupled between a first node and a second node, the ESD detection circuit comprising: a triggering circuit, for generating an ESD trigger signal when the ESD detection circuit is in an ESD mode; a bias circuit, coupled to the triggering circuit, for providing at least a first bias voltage and a second bias voltage to control an operation of the triggering circuit; a trigger controlling circuit, coupled to the bias circuit and the triggering circuit, for decreasing a voltage difference between the first bias voltage and the second bias voltage to control a duration of the ESD trigger signal generated by the triggering circuit when the ESD detection circuit is in the ESD mode; and an activating control circuit, coupled to the trigger controlling circuit and the triggering circuit, for activating the trigger controlling circuit and the triggering circuit to enter the ESD mode according to a voltage level at the first node.