Input/output adapted to operate with low and high voltages
US5483189A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/01759
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A stage of both input and output configurable for operation with low and high voltages, comprises: PA1 first (M1), second (M2) and third (M3) transistors, each having first and second terminals and a control terminal, the first and second terminals and control terminal of the first transistor (M1) being respectively connected to a first terminal of a voltage supply, the first terminal of the second transistor (M2), and a drive circuit means, the second terminal and control terminal of the second transistor (M2) being respectively connected to a circuit node (A), forming an input/output terminal of the stage (1), and to the drive circuit means, the first and second terminals and control terminal of the third transistor (M3) being respectively connected to a second terminal of the voltage supply, the circuit node (A), and the drive circuit means; PA1 at least one diode (D2) connected between the first and the second terminal of the second transistor (M2); and PA1 an input circuit (3) having a first input terminal connected to the circuit node (A), a second input terminal connected to a reference voltage (Vref3), and at least one output terminal forming an output terminal of the stage…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.