Interface protection device with integrated supply clamp and method of forming the same
US8860080B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2013 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/85
Abstract
Protection circuit architectures with integrated supply clamps and methods of forming the same are provided herein. In certain implementation, an integrated circuit interface protection device includes a first diode protection structure and a first thyristor protection structure electrically connected in parallel between a signal pin a power high supply. Additionally, the protection device includes a second diode protection structure and a second thyristor protection structure electrically connected in parallel between the signal pin and a power low supply. Furthermore, the protection device includes a third diode protection structure and a third thyristor protection structure electrically connected in parallel between the power high supply and the power low supply. The third thyristor protection structure and the third diode protection structure are synthesized as part of the integrated circuit interface and can share at least a portion of the wells and/or diffusion regions associated with the first and second thyristor protection structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.