Apparatus and method for universal high range level shifting
US9647660B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2016 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Aug 5, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018521
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus for converting a first input signal from a first voltage domain to an output signal for a second voltage domain, the apparatus configured to operate within the first voltage domain or within the second voltage domain. The apparatus comprising input driver circuitry configured to generate second input signal based on the first input signal and a control signal received by input driver circuitry. The apparatus also comprising selection circuitry configured to generate a selection signal based on the control signal. The apparatus also comprising cross-coupled circuitry configured to generate a level-shifted signal at an intermediate node based on the first input signal, the second input signal, and the selection signal. The cross-coupled circuitry comprises a first pair of parallel transistors and a second pair of parallel transistors. The apparatus further comprising output driver circuitry configured to generate output signal for the second voltage domain based on the level-shifted signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.