Differential line driver with short circuit protection
US4884165A · kind A · utility
23Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1988 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Nov 18, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/6871
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A short-circuit protected line driver circuit is particularly adapted for use in a differential line driver system, where one line driver circuit provides a true output signal and another line driver circuit provides a complementary false output signal. A short-circuit is sensed by measuring current through a secondary pull-up transistor and disabling a primary pull-up transistor if a short-circuit fault occurs which exceeds a predetermined current level for a predetermined time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.