Voltage clamp device for monolithic circuits
US4131928A · kind A · utility
17Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1977 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Jun 24, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/711
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and circuit are disclosed for providing input voltage transient signal protection to integrated circuits. The circuit comprises two NPN transistors fabricated integrally with the integrated circuit. The emitter of the first one of the transistors is adapted to be connected to an input of the integrated circuit. The N-epi collector regions of both transistors are connected, as is the emitter of the second transistor, to the P-substrate of the integrated circuit. The bases of the two transistors are connected together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.