Electrostatic discharge protection circuit

Details Electrostatic discharge protection circuit Electrostatic discharge protection circuit

1997-09-15

1999-11-16

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361104, H02H 900

Patent

active

059868627

ABSTRACT:
An electrostatic discharge protection circuit includes a first and second metals respectively between input and output stages and a power source voltage that open when a strong positive electrostatic discharge is respectively received at the input and output stages. The electrostatic discharge protection circuit further includes first and second diodes having respective anodes coupled to the first and second metals and respective cathodes coupled to the power source voltage stage and first and second protection diodes respectively coupled in parallel with the first and second diodes. Third and fourth metals are respectively between the input and output stages and a ground voltage that open when a strong negative electrostatic discharge is respectively received at the input and output stages. Third and fourth diodes having respective cathodes are coupled to the third and fourth metals and respective anodes coupled to the ground voltage and third and fourth protection diodes respectively coupled in parallel with the third and fourth diodes.

REFERENCES:
patent: 4875130 (1989-10-01), Huard
patent: 4958200 (1990-09-01), Sekiguchi
patent: 5144519 (1992-09-01), Chang
patent: 5400202 (1995-03-01), Metz et al.
patent: 5615074 (1997-03-01), Avery
patent: 5627711 (1997-05-01), Pezzani
patent: 5859758 (1999-01-01), Kim

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