Low power single rail input voltage level shifter
US7839170B1 · kind B1 · utility
10Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2009 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Mar 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356182
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention sets forth a technique for shifting the voltage level of signals from a low voltage domain to a high voltage domain, where VDDH is the supply voltage of the high voltage domain and VDDL is the supply voltage of the low voltage domain. A level shifting circuit uses a single input rather than dual rail inputs and does not produce a direct current flow in order to reduce the power consumption. The voltage level shifting circuit may also be used to shift a clock signal since the delays of the rising and falling edges of the clock signal are matched by using a delay element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.