CMOS simultaneous transmission bidirectional driver/receiver
US5541535A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Dec 16, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/1423
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A CMOS driver/receiver pair is provided which includes a non-inverting buffer in the input path to a differential receiver circuit. The non-inverting buffer allows a plurality of different voltages, and corresponding voltage swings, to be possible. This allows the differential receiver to compare the input voltage received from the transmission line with the output from its associated driver. Therefore, the receiver is capable of determining the voltage level (and the corresponding logic level) input from the transmission at the same time its associated driver is outputting a logic signal to another driver/receiver pair, via the transmission line. A single voltage source is utilized to provide multiple positive voltages to the differential receivers, such that differences in voltage levels which correspond to different logical combinations of "1" and "0" can be determined by the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.