System and method for a mixed voltage drive system for floating substrate technology
US5966036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1997 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Sep 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system for buffering input and output signals in a floating substrate technology environment comprises an output pre-driver and an output driver. The output pre-driver includes a pull-up subsystem and a pull-down subsystem, which both receive an output signal and an output enable signal. The pull-up subsystem includes a multistage delay circuit, a current regulation circuit, and a bootstrap circuit, a keeper circuit, an oscillator circuit, and a turn-off circuit, which are coupled together so that a pull-up signal is generated. The pull-down subsystem includes a stagger circuit and a switch circuit that are coupled together to generate a pull-down signal. The output driver includes a pull-up circuit to receive the pull-up signal and a staggered pull-down circuit to receive the pull-down signal. The output driver generates a pad signal used to drive a peripheral device that is coupled to the mixed voltage drive system. A method for a mixed voltage drive system for floating substrate technology is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.