Semiconductor device with a plurality of power supply systems
US8749932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2012 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Aug 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/921
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A protection circuit includes a first power supply system including a first power supply and a first ground, a second power supply system including a second power supply and a second ground, and a control circuit that, when coupled to an electro-static discharge (ESD) stress being applied to the first power supply system, controls a first switch. The first switch is provided between the signal line and the first ground. The control circuit includes a capacitance element, a resistance element in series with the capacitance element, and an inverter, an output of the inverter being connected between a gate of the first switch, an input of the inverter being connected to a connecting point between the capacitance element and the resistance element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.