Low voltage to high voltage signal level translator with improved performance
US7274209B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356121
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for shifting a signal from a first voltage level to a second voltage level. In one embodiment, a voltage translator circuit has first and second transistors that are cross-coupled; a third transistor having a gate coupled with the input signal, the third transistor being coupled between the gate of the second cross-coupled transistor and the drain of the first cross-coupled transistor; and a fourth transistor having a gate coupled with an inverted version of the input signal, the fourth transistor being coupled between the gate of the first cross-coupled transistor and the drain of the second cross-coupled transistor. In another embodiment, the circuit may have, as part of its output stage, a first and second output transistors connected in series, and a third output transistor coupled between the second output transistor and ground, the third output transistor having a gate coupled with a high voltage supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.