Level shifter for high-speed and low-leakage operation
US7777547B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2007 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Nov 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/012
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a voltage level shifter capable of interfacing between two circuit systems having different operating voltage swings. The voltage level shifter comprises an input buffer having a low supply voltage for inverting an external input signal to an internal input signal, and an output buffer having a high supply voltage for inverting the internal input signal to an external output signal. The high level of the external input signal is lower than the high level of the external output signal. The voltage level shifter is designed such that the input buffer is operating to achieve a low-leakage and high-speed performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.