Data output circuit that can drive output data speedily and semiconductor memory device including such a data output circuit
US6249462A · kind A · utility
4Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2000 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Apr 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4093
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An output buffer includes a pull up transistor of N type field effect to charge a data output terminal by an external power supply potential Vdd in a high level data output operation, and a pull down transistor of N type field effect to discharge the data output terminal to a ground potential Vss in a low level data output operation. The substrate potential of the pull up NMOS transistor is set to a potential of a level higher than the normal case in a high level data output operation. As a result, the output buffer can speedily charge the data terminal in a high level data output operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.