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:
May. 30, 2000
Filed:
Dec. 08, 1998
Applicant:
Inventor:
Paul L Perez, Fort Collins, CO (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
326 98 ; 326 17 ;
Abstract
A method and apparatus for improving the forward path switching speed of a complementary CMOS inverter is presented. A large P-type to N-type FET ratio is used to tune the inverter trigger point to the falling edge of the input signal to the inverter. The high P-type to N-type ratio is made feasible by adding a precharge assist pull-down transistor in parallel on the output node of the inverter.