Dual-voltage detector having disable outputs within separate voltage domain and related methods
US9379700B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2014 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Sep 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/185
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Dual-voltage detectors and related methods are disclosed that receive control signals from a first supply voltage domain and provide multiple disable outputs within a separate supply voltage domain. The disclosed embodiments detect a power supply status in one supply voltage domain (e.g., 1.2 volts, ground) and then assert low voltage disable or reset signals to downstream circuitry within a different supply voltage domain that is powered with different supply voltages (e.g., 1.8 volts, 0.9 volts, ground). In certain embodiments, the dual-voltage detectors provide two disable signals to stacked output drivers that are used to tri-state the stacked output drivers to place them in a high-impedance (HIGH-Z) state, for example, during power-up or power-down operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.