Reduced area active above-supply and below-ground noise suppression circuits

A noise suppression circuit for suppressing noises above and below reference voltages is provided. The noise suppression circuit for suppressing noises includes a clamping transistor, a feedback circuit, and a presetting means for presetting an internal latch of the noise suppression circuit to a pr...

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Bibliographic Details
Main Authors KLIM PETER JUERGEN, SCHMIDT SHON ALAN, DURHAM CHRISTOPHER MCCALL
Format Patent
LanguageEnglish
Published 26.06.2001
Edition7
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PULSE TECHNIQUE
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A noise suppression circuit for suppressing noises above and below reference voltages is provided. The noise suppression circuit for suppressing noises includes a clamping transistor, a feedback circuit, and a presetting means for presetting an internal latch of the noise suppression circuit to a predetermined state. The predetermined state is a high state or a low state depending upon the type of noise suppression accomplished by the circuit. After the occurrence of a noise coupling event, the clamping transistor restores the state of a data input of a circuit to which the suppression circuit is providing protection. The feedback circuit then turns off the clamping transistor after a predetermined amount of time.
Bibliography:Application Number: US19990404401