Wired combinational logic circuit with pullup and pulldown devices
US5804990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Apr 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/0948
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A wired combinational logic arrangement responsive to N binary signal sources includes N circuits, one for each source. The circuits drive a common output terminal. Each circuit includes first and second devices for pulling the common terminal to first and second different voltages during successive abutting activation periods. The first device supplies a current to the common terminal that is considerably greater than the current supplied to the common terminal by the second device. The arrangement further includes a third device for pulling the common terminal to the second voltage at all times. The third device supplies a current to the common terminal that is either equal to or less than the current supplied by the second device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.