ESD input protection circuit
US4630162A · kind A · utility
31Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1984 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Jul 31, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A clamp circuit which breaks down under application of high voltage is connected to an input pin to be protected through a unidirectional device such as a diode. A voltage supply is connected to the discharge path between the unidirectional device and the clamp. The voltage supply will therefore supply any leakage currents which may be drawn by the clamp during normal operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.