Semiconductor integrated circuit device including electrostatic protection circuit accommodating drive by plurality of power supplies and effectively removing various types of surge
US6208494A · kind A · utility
69Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Feb 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/811
Abstract
According to a structure in which each transistor of an output buffer transistor group of a gate array structure is electrically isolated, each body potential is set independent Also, a diode-connected transistor is provided between power supplies. An element not used in the output buffer transistor group can be connected without short-circuiting power supply lines between independent power supply lines to form an electrostatic protection circuit that is efficient in layout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.