Device for protection against electrostatic discharges on the te

Details Device for protection against electrostatic discharges on the te Device for protection against electrostatic discharges on the te

1997-11-26

1999-05-18

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361111, 361118, H02H9/00

Patent

active

059056142

ABSTRACT:
A device for protection against electrostatic discharges on the terminals of a MOS integrated circuit and characterized in that it consists of a first and a second circuit branch coupled between the terminal to be protected and ground. The first circuit branch has two field transistors. The gate of the first field-effect transistor is connected to terminal to be protected, and the gate of the second field-effect transistor is connected to a first resistance of the second circuit branch. The second circuit branch has a third field-effect transistor with its gate terminal connected to ground and a second resistance inserted between the third transistor and the terminal to be protected.

REFERENCES:
patent: 5311391 (1994-05-01), Dungan et al.
patent: 5452171 (1995-09-01), Metz et al.
patent: 5550699 (1996-08-01), Diaz

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