System and method for open drain/open collector structures in an integrated circuit
US7948269B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2009 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Mar 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/017581
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an output driver is disclosed. The output driver has a first driving device (Q1) that has a first terminal coupled to a bus line terminal, and a second driving device (Q2) that has a first terminal coupled to the bus line terminal. The first driving device (Q1) is configured to couple the bus line terminal to a reference voltage when activated by a first control signal, and the second driving device (Q2) is configured to couple the bus line terminal to a first supply voltage (Vcc) when the second driving device (Q2) is activated by a second control signal. The output driver also has a controller configured to activate the second control signal after the first control signal is deactivated. The second control signal remains active for a first fixed period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.