Circuit to improve electrostatic discharge protection
US5019888A · kind A · utility
54Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1987 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Jul 23, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/601
Abstract
An output buffer (26) comprises a plurality of transistors (28) arranged in parallel between an output pin (34) and ground (38). Resistors (30) are connected in series between the drain (30) of the transistors (28) and the output pin (34) to ensure that an electrostatic discharge generated through normal handling will be distributed substantially equally through each of the transistors (28), thus preventing damage to the output buffer (26).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.