Dynamic threshold source follower voltage driver circuit
US6271713A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | May 14, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/01721
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In some embodiments, the invention includes a die having a driver circuit. The driver circuit includes a driver input node and a driver output node. An nFET pull-up transistor is connected to the driver output node, and wherein the nFET pull-up transistor is at times forward body biased and the forward body bias is substantially greatest when a signal at the driver input node begins to switch high and substantially least when the switching has already essentially occurred. In some embodiments, the driver includes a first inverter to receive an input signal from the driver input node and provide an inverted input signal at a first inverter output node. The driver includes second inverter to receive the inverted input signal from the first inverter output node and provide a driver output signal at the driver output node. The driver includes an nFET pull-up transistor connected between the driver output node and a power supply node, the nFET pull-up transistor having a gate tied to the driver input node. In some embodiments, the nFET pull-up transistor is at times forward body biased. Other embodiments are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.