Patent ID: 11955796
Assignee: APPLE INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An apparatus, comprising:
a first integrated circuit coupled to a circuit board; and
a second integrated circuit coupled to the circuit board and coupled to the first integrated circuit via a conductive trace, wherein the second integrated circuit includes an output circuit configured to:
generate an output signal on a signal port coupled to the conductive trace, using a device coupled to the signal port, wherein a control terminal of the device is coupled to a regulated power supply node included in the second integrated circuit;
couple the signal port to an internal power supply node of the second integrated circuit in response to a detection of an electrostatic discharge event, wherein the internal power supply node is coupled to a power supply port of the second integrated circuit via a resistor; and
increase a voltage level of an input to the control terminal of the device in response to detecting the electrostatic discharge event;
wherein the output circuit includes a diode configured to couple the regulated power supply node to a ground supply node in response to detecting the electrostatic discharge event.