ESD input protection circuit

Details ESD input protection circuit ESD input protection circuit

1984-07-31

1986-12-16

Wong, Peter S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 91, 361111, H02H 900

Patent

active

046301623

ABSTRACT:
A clamp circuit which breaks down under application of high voltage is connected to an input pin to be protected through a unidirectional device such as a diode. A voltage supply is connected to the discharge path between the unidirectional device and the clamp. The voltage supply will therefore supply any leakage currents which may be drawn by the clamp during normal operation.

REFERENCES:
patent: 4037140 (1977-07-01), Eaton, Jr.
patent: 4321644 (1982-03-01), Brasfield
patent: 4323942 (1982-04-01), Hartman et al.
patent: 4331884 (1982-05-01), Svedberg
patent: 4475012 (1984-10-01), Coulmance
patent: 4527213 (1985-07-01), Ariizumi

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