Single-supply, single-ended level conversion circuit for an integrated circuit having multiple power supply domains
US7671629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2008 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Apr 8, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018521
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit comprises first, second, third, and fourth transistors. The first transistor has a first current electrode, a control electrode for receiving an input signal, and a second current electrode. The second transistor has a first current electrode coupled to the second current electrode of the first transistor for providing an output signal, a control electrode coupled to the control electrode of the first transistor, and a second current electrode coupled to a first power supply voltage terminal. The third transistor has a first current electrode coupled to a second power supply voltage terminal, a control electrode, and a second current electrode coupled to the first current electrode of the first transistor. The fourth transistor has a first current electrode coupled to the control electrode of the third transistor, a control electrode coupled to the control electrodes of the first and second transistors, and a second current electrode coupled to the control electrode of the first transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.