Semiconductor integrated circuit device equipped with protective system for directly discharging surge voltage from pad to discharge line
US5875086A · kind A · utility
6Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1996 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Sep 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/601
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protective system incorporated in a semiconductor integrated circuit device has a shared discharging line and a plurality of protective circuits each having a diode and a lateral bipolar transistor coupled between an associated pad and the shared discharging line. Surge voltage applied to the pad is discharged through the associated protective circuit to the shared discharging line so that a main circuit is not destroyed by the surge voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.