Semiconductor integrated circuit
US6310493A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/09429
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a semiconductor integrated circuit, an input-output circuit includes a flip-flop circuit (a front stage of an output circuit) between an input circuit unit and a tri-state output circuit unit (a final stage of an output circuit). This input-output circuit converts the level of the signal supplied from an internal circuit, which is operated by a first power source system, which provides a first supply potential and a grounding potential, of an LSI. After elapse of a certain time delay, the input-output circuit outputs a level converted signal to a device, which is operated by a second power source system, providing a second supply potential and a grounding potential, outside of the LSI.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.