The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2012
Filed:
Sep. 16, 2009
Jeffrey G. Barrow, Tucson, AZ (US);
Jeffrey G. Barrow, Tucson, AZ (US);
Integrated Device Technology, Inc., San Jose, CA (US);
Abstract
A SCR-based based electrostatic discharge protection device with a shunt path is provided. The shunt path operates at a low resistance when an enabling signal of the shunt path is asserted and a high resistance when the enabling signal is negated. The shunt path connects the cathode and the gate of the silicon-controlled rectifier, and provides a conductive path for displacement current from a parasitic capacitance when the shunt path is enabled, such as when power is provided to the device, and further allows the SCR to enter a low-resistance state when the shunt path is not enabled, such as when power is not provided to the device. A threshold trigger circuit is operably coupled between the anode and the cathode of the silicon-controlled rectifier and is configured to provide a current path when the anode voltage reaches a predetermined value lower than a breakdown voltage of the silicon-controlled rectifier.