Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Patent
1997-02-19
1999-06-08
Medley, Sally C.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
361111, 361 91, H02H 900
Patent
active
059108738
ABSTRACT:
A circuit for protecting an interface cable driver and the circuitry attached to the driver from electrical overstress damage, such as that which may arise from an electrostatic discharge. The protection circuit includes a sensing element, typically a field oxide transistor, which is used to sense when an EOS transient raises the input/output voltage above the normal operating range. The sensing element is configured to change logic state when the transient reaches a predetermined threshold level. The change in state is used as a feedback path to turn on the interface driver transistor connected to ground and turn off the interface driver transistor connected to the power supply. The interface driver transistor connected to ground then acts to shunt away the transient, preventing damage to the driver and internal circuitry.
REFERENCES:
patent: 5208719 (1993-05-01), Wei
patent: 5255146 (1993-10-01), Miller
patent: 5321293 (1994-06-01), Mojaradi et al.
patent: 5352915 (1994-10-01), Hutchings et al.
patent: 5371395 (1994-12-01), Hawkins
patent: 5374565 (1994-12-01), Hsue et al.
patent: 5406105 (1995-04-01), Lee
patent: 5416036 (1995-05-01), Hsue
patent: 5426323 (1995-06-01), Reczek et al.
patent: 5440162 (1995-08-01), Worley et al.
patent: 5449939 (1995-09-01), Horiguchi et al.
patent: 5617283 (1997-04-01), Krakawer et al.
Boluna Luis Sergio V.
DeClue Larry W.
Hoang Tuong Hai
Lo Tony S.
Medley Sally C.
National Semiconductor Corporation
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