Patent · US Expired

Semiconductor integrated circuit

US6028474A · kind A · utility

8Cited by
3References
4Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 24, 1997
Grant dateFeb 22, 2000
Priority date
Expiry dateSep 24, 2017

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH03K19/0016
  • WIPO fieldBasic communication processes
  • WIPO sectorElectrical engineering

Abstract

A semiconductor integrated circuit includes an input buffer circuit that has an input terminal connected to an external signal input pad. A level-setting resistor is arranged between the input buffer circuit and a reference potential terminal having a reference potential, for holding the input terminal at the reference potential. The level-setting resistor comprises a transistor that is supplied with a control signal, and set to an off state by the control signal when the external signal input pad is in a predetermined potential state.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.