Voltage level shifting circuits and methods and systems using the same
US6535018B1 · kind B1 · utility
8Cited by
8References
13Claims
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Key dates
| Filing date | Jul 26, 2000 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jul 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356113
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A level shifter 200 for shifting a logic high voltage of an input signal from a lower voltage to a higher voltage includes a latch 204 for storing a bit of data and having an output for driving a stored logic high bit at the higher voltage. A data node is coupled to a source of the higher voltage and an input of the latch. Voltage control circuitry 203 selectively gates the input signal received at the lower voltage with a bit of data stored in latch 204 and selectively pulls down the voltage at the data node in response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.