Semiconductor integrated circuit device double isolated CMOS input protection resistor
US4903093A · kind A · utility
11Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | May 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/601
Abstract
In a semiconductor integrated circuit device, input protective elements have current limiting resistors which are diffused resistors of a second conductivity type formed in a first semiconductor region of a first conductivity type isolated electrically by a second semiconductor region of the second conductivity type, with the first conductivity type semiconductor region being in a floating state electrically. The input protective elements create less leak current and have high electrostatic durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.