Electro-static discharge protection device for CMOS integrated circuit inputs

US4987465A · kind A · utility

Assignee

• Advanced Micro Devices, Inc. · US

Inventors

• Steven W. Longcor · Mountain View, US
• Kuang-Yeh Chang · Taipei, TW
• Jih-Chang Lien · Houston, US
• David Michael Rogers · Sunnyvale, US

Key dates

• Filing date: Oct 28, 1988
• Grant date: Jan 22, 1991
• Expiry date: Oct 28, 2008

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D89/811

Abstract

An ESD protection device for CMOS integrated circuit inputs is disclosed. Two clamp components, coupled by a current limiting device, couple the pad to the circuitry of the chip. The device prevents damage to the circuit from an ESD of approximately 8000 or more volts at an input terminal.