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:
Nov. 20, 2001
Filed:
Sep. 23, 1999
Applicant:
Inventor:
Warren R. Anderson, Westborough, MA (US);
Assignee:
Digital Equipment Corporation, Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/22 ;
U.S. Cl.
CPC ...
H02H 3/22 ;
Abstract
An electrostatic discharge (ESD) protection technique protects a semiconductor device against electrostatic discharge events. The technique uses an ESD protection circuit that includes Darlington-connected clamps between the protected I/O pad and a reference voltage conductor with circuitry to prevent leakage. A control signal that is used to control the clamps is derived from another pad.