Patent · US Expired

Circuit configuration for protecting an integrated circuit

US4949212A · kind A · utility

10Cited by

1References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Lenz · Zorneding, DE
Frank-Lothar Schwertlein · Hersbruck, DE
Wolfgang Horchler · Rosenheim, DE

Key dates

Filing date	Feb 15, 1989
Grant date	Aug 14, 1990
Priority date	—
Expiry date	Feb 15, 2009

Classification

Technology area (CPC H)Electricity
CPC primaryH10D84/63
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A circuit configuration for protecting an integrated circuit from damage by a voltage present at an output exceeding the supply voltage range of the integrated circuit includes a given number of parasitic circuit structures of the integrated circuit. Additional circuit structures combined with the parasitic circuit structures form a protective circuit. The circuit structures are activated by the voltage at the output to become operative for protection.

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