Complementary CMOS driver circuit with de-skew control
US7196550B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Jun 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/1515
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for driving a pair of input signals to form driven output signals while reducing the amount of skew between the driven output signals. In one embodiment, a driver circuit includes a first set of drivers connected in series and receiving the first input signal to produce a first output signal; a second set of drivers connected in series and receiving the second input signal to produce a second output signal; a first transmission gate connecting an input of one of the drivers from the first set of drivers to an output of one of the drivers of the second set of inverters; and a second transmission gate connecting an input of one of the drivers from the second set of drivers to an output of one of the drivers of the first set of drivers. Each transmission gate may be provided with a control for enabling or disabling the transmission gate, thereby permitting the selective application of the de-skew function of the circuit and providing for reduced power consumption when the de-skew function is disabled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.