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:
Jun. 20, 2000
Filed:
Aug. 16, 1995
Applicant:
Inventors:
Ekanayake Ajith Amerasekera, Plano, TX (US);
Charvaka Duvvury, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257358 ; 257360 ; 257361 ; 257363 ;
Abstract
An ESD protection circuit for dual 3V/5V supply devices. ESD protection circuit 10 comprises a switching element 12 connected between a bond pad 14 and primary protection device 16. Primary protection device 16 comprises MOS circuitry designed for 3V operation that suffers from oxide reliability problems when 5V signals are applied directly. Switching element 12 separates the primary protection device 16 from 5V signals which may appear at bond pad 14.