Apparatus and method for a radiation resistant latch
US6826090B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2003 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Jun 30, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one form of the invention, a radiation resistant latch has an overall output node, and first, second and third sublatches. The sublatches each have input circuitry, an output node coupled to the sublatch's input circuitry and feedback circuitry coupled to the sublatch's output node for reinforcing an output signal of the sublatch. The sublatches are operable to receive a data signal at their respective input circuitry and responsively generate binary-state output signals on their respective output nodes. The first and second sublatches are coupled to the third sublatch and the third sublatch has its output signal coupled to the overall output node such that if any one of the three sublatches is subjected to a radiation induced erroneous change of state, the output signals of the other two sublatches reduce an effect of the third sublatch feedback circuitry on an overall output signal for the latch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.