Balanced level shifter with wide operation range
US8791743B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2013 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Feb 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356104
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments of an apparatus are disclosed that may allow for the translation of signals from one power domain to another with well-balanced rise and fall times over a wide operational range. The apparatus may include an input buffer, a voltage shift circuit, and output circuit, and an output driver. The input buffer may be configured to generate a buffered version and delayed inverted version of an external signal at a first voltage level. The voltage shift circuit may be configured to generate two internal signals at a second voltage level dependent upon the output signals of the input buffer. The output circuit may be configured to generate two output driver signals at the second voltage level dependent upon the output signals of the voltage shift circuit. The output driver circuit may be configured to generate an output signal at the second voltage level dependent on the two output driver signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.