MOS output driver, and circuit and method of controlling same
US6426653B1 · kind B1 · utility
4Cited by
18References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 2001 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | May 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/01721
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit and method for providing a fast transitioning output buffer that may be configured to operate using either a 3 volt or 5 volt supply voltage. The pullup behaves similarly to a MOS diode, but the circuit lowers the gate voltage on a pullup while the output is being pulled up. The circuit does not affect the final pullup voltage. As a result, a single PMOS device may be used as a pullup device that does not generally require an increased size to support a high operating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.