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:
Mar. 02, 1999
Filed:
Mar. 27, 1992
John K Eitrheim, Garland, TX (US);
Richard B Reis, Garland, TX (US);
Steve McMahan, Richardson, TX (US);
Lawrence H Hudepohl, Richardson, TX (US);
Douglas Ewing Duschatko, Plano, TX (US);
Tai Dinh Ngo, Arlington, TX (US);
Jeffrey Byrne, Garland, TX (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A microprocessor is implemented using sense amplifiers to replace CMOS logic circuits, in order to provide low voltage, high frequency switching. The input node of the sense amplifier is maintained at a voltage just above or just below their trip-point of one inverter in order to obtain high-speed switching. Bench mark tests have shown that a microprocessor operating at 2.7 volts may obtain a frequency of 20 MHz and while the same microprocessor may operate at 5.5 volts and 40 MHz.