Semiconductor device
US6404016B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Mar 8, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/305
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a semiconductor device in which an analog section to which power source lines Vdd1 and Vss1 are supplied and a digital section to which power source lines Vdd2 and Vss2 are supplied are mounted in an N-type semiconductor substrate and connected to each other by a signal line S11, a protection circuit HK1 is located between the power source line Vdd1 and Vdd2, the protection circuit becoming conductive when a potential difference between the power source lines Vdd1 and Vdd2 exceeds a prescribed value irrespectively of the direction of a surge input, thereby placing the power source lines Vdd1 and Vdd2 at substantially the same potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.