Bidirectional interface using thin oxide devices

US10079595B1 · kind B1 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Brent R. Den Hartog · Rochester, US
• Eric John Lukes · Stewartville, US
• Matthew James Paschal · Rochester, US
• Nghia V. Phan · Rochester, US
• Raymond A. Richetta · Rochester, US
• Patrick L. Rosno · Rochester, US
• Timothy J. Schmerbeck · Mantorville, US
• Dereje G. Yilma · Rochester, US

Key dates

• Filing date: Nov 8, 2017
• Grant date: Sep 18, 2018
• Expiry date: Nov 8, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03K19/00315
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Certain aspects of the present disclosure are directed to a circuit for driving a signal at an output node. The circuit generally includes a voltage divider network having a first terminal coupled to the output node. The circuit also includes a first transistor having a gate coupled to a second terminal of the voltage divider network and a plurality of transistors. A gate of each of the plurality of transistors may be coupled to a respective tap node of the voltage divider network, and the plurality of transistors may include a third transistor having a source coupled to a drain of the first transistor. The circuit may also include a second transistor coupled to the first transistor and having a gate coupled to an input node of the circuit.