Output pad circuit using control signal
US6043683A · kind A · utility
5Cited by
4References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1997 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Sep 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018585
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output pad circuit is provided that adjusts a driving output current size within the chip based on a control signal. Thus, the output pad circuit adjusts a driving output current size, without attaching an external buffer or exchanging the output pad circuit, when an external load size varies during a chip design. The output pad circuit includes a tri-state inverter having an output being a tri-state level when a control signal is low level, but operating as an inverter when the control signal is high level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.