Electricity: electrical systems and devices – Safety and protection of systems and devices – Transient responsive
Patent
1992-08-12
1994-01-04
DeBoer, Todd
Electricity: electrical systems and devices
Safety and protection of systems and devices
Transient responsive
361 91, H02H 904
Patent
active
052765822
ABSTRACT:
A circuit for protecting an IC against electrostatic discharge includes a npn transistor having its collector connected to a first I/O pad and its emitter connected to VSS. A zener diode has its cathode connected to the first I/O pad, its anode connected both to the base of the npn transistor and to a first resistor. The other end of the resistor is connected to VSS.
REFERENCES:
patent: 4423431 (1983-12-01), Sasaki
patent: 4712152 (1987-12-01), Iiu
Farrenkopf Doug
Merrill Richard B.
Reynolds David C.
DeBoer Todd
National Semiconductor Corporation
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