Single supply level converter
US7119578B2 · kind B2 · utility
14Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2003 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Jan 9, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/0948
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A level converter for interfacing two circuits supplied by different supply voltages, and integrated circuit including the level converter interfacing circuit in two different voltage islands. A first buffer is supplied by a virtual supply and receives an input signal from a lower voltage circuit. The first buffer drives a second buffer, which is supplied by a higher supply voltage. An output from the second buffer switches a supply select to selectively pass the higher supply voltage or a reduced supply voltage to the first buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.