Patent attributes
An electrostatic protection circuit includes: a monitoring circuit configured to generate a trigger signal in response to an electrostatic pulse being present on the power supply pad; a discharge transistor connected between the power supply pad and the ground pad and configured to be turned on under control of the trigger signal and discharge electrostatic discharging charges to the ground pad; and a delay circuit having an input terminal connected to an output terminal of the monitoring circuit, and an output terminal connected to a control terminal of the discharge transistor, where the delay circuit is configured to perform delay processing on the electrostatic protection circuit in a first state and turn off the discharge transistor in a second state.
