Semiconductor device having a safety circuit

Details Semiconductor device having a safety circuit Semiconductor device having a safety circuit

H - Electricity

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H01L 27/02 (2006.01) H01L 27/00 (2006.01) H01L 27/07 (2006.01) H03F 1/52 (2006.01) H03K 17/0812 (2006.01)

Patent

CA 1078072

ABSTRACT: Safeguarded integrated circuit having two supply electrodes, an output electrode and an input electrode. Between two of the electrodes the circuit comprises a safety circuit having a lateral bipolar transistor the emitter and collector zones of which are connected to the said electrodes. The bipolar transistor is provided in a region which is surrounded by the substrate, serves as a base zone and has a conductivity type opposite to that of the substrate. A connection contact connected to the emitter is provided on said region and a modulatable resistance is formed between said connection contact and the active base zone by the said region. Application in particular to integrated MOS circuits. -21-

272106

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