Integrated circuits including coil circuit and SCR

US11901353B2 · kind B2 · utility

Assignee

• TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD. · TW

Inventors

• Wei Wu · Danei, TW
• Ming-Dou Ker · Hsinchu, TW
• Chun Lin · Yardley, US
• Li-Wei Chu · Tangxia, CN

Key dates

• Filing date: Mar 12, 2021
• Grant date: Feb 13, 2024
• Expiry date: Nov 9, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D89/713

Abstract

An integrated circuit includes a T-coil circuit, a silicon-controlled rectifier (SCR), and a signal-loss prevention circuit. The T-coil circuit is coupled to an input/output (I/O) pad and an internal circuit. The SCR is coupled to the T-coil circuit and the internal circuit. The signal-loss prevention circuit is coupled to the T-coil circuit and the SCR. The signal-loss prevention circuit includes a resistor coupled to the T-coil circuit and the SCR. An electrostatic current flows through the resistor and turns on the SCR. The signal-loss prevention circuit may also include a diode circuit coupled to the T-coil circuit and the SCR. The diode circuit is configured to prevent signal loss.