Output driver with over voltage protection
US6724595B1 · kind B1 · utility
0Cited by
10References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Mar 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00315
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output driver obtains over voltage protection by utilizing a first transistor to pass signals from an internal node to an external node when the driver is transmitting data, and to isolate the internal node from the external node when the driver has stopped transmitting data. When the driver has stopped transmitting data, the voltage on the external node is subject to rising. The output driver also utilizes a second transistor and a resistance to ground to control the first transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.