Output current control circuit for reducing ground bounce noise
US4782252A · kind A · utility
17Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Dec 8, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/166
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output current control circuit (10) for use with CMOS output buffers so as to reduce significantly ground bounce noise, includes a variable resistance device (28) for limiting the maximum short circuit current in a pull-down transistor (N1) so as to reduce significantly ground bounce noise. A feedback resistor (R.sub.s) is used to sense a reference voltage developed at a system ground reference line (30) for controlling the resistance of the variable resistance device (28).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.