Fast quaternary content addressable memory cell
US8462532B1 · kind B1 · utility
415Cited by
107References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2011 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jun 29, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Quaternary CAM cells are provided that include one or more compare circuits that each has a minimal number of pull-down transistors coupled between the match line and ground potential. For some embodiments, the compare circuit includes two parallel paths between the match line and ground potential, with each parallel path consisting of a single pull-down transistor having a gate selectively coupled to the stored data value in response to a comparand value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.