Current-steering CMOS logic family

US5162674A · kind A · utility

Assignee

• State of Oregon acting by and through the State Board of Higher Ed. on Behalf of Oregon State Univ. · US

Inventors

• David J. Allstot · Seattle, US
• Guojin Liang · San Jose, US
• Howard Yang · Milpitas, US

Key dates

• Filing date: May 10, 1991
• Grant date: Nov 10, 1992
• Expiry date: May 10, 2011

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D89/00
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

In integrated circuitry having both analog and digital circuits fabricated on the same substrate, switching transients produced by the digital circuitry can propagate through the substrate and induce deleterious effects in the associated analog circuitry. Such switching transients are greatly minimized by the disclosed family of CMOS logic circuits in which a constant DC bias current is steered to change logic states.