Input-output device protection
US8395433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2010 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Apr 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00315
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A cascoded input-output device is provided configured to receive at an input node a lower voltage input signal and to generate at an output node a higher voltage output signal. The input-output device is split into two voltage domains to enable output signals in a larger range to be generated, while the components of the input-output device individually operate in a smaller range. By applying a selected bias voltage to a protected node of the cascoded input-output device, first changing that selected bias voltage in response to a transition of the input signal and then switching that selected bias voltage back when the output signal reaches a predetermined level, that node is protected, either avoiding stress-inducing voltage swings or providing a switching speed increasing charge boost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.