SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

A semiconductor integrated circuit device is configured such that if, due to an erroneous connection or the like, an abnormal state is entered in which an output voltage is lower than a ground potential VSS, an N-type DMOS transistor and a first P-type MOS transistor are turned off and a voltage is...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SAITO JUNICHI, SAWATAISHI TOMOYUKI
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PULSE TECHNIQUE
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:A semiconductor integrated circuit device is configured such that if, due to an erroneous connection or the like, an abnormal state is entered in which an output voltage is lower than a ground potential VSS, an N-type DMOS transistor and a first P-type MOS transistor are turned off and a voltage is applied to their parasitic diodes in the opposite direction, preventing a current from flowing. In a normal state in which the output voltage is higher than the ground potential, at least one of the N-type DMOS transistor and first P-type MOS transistor, which are connected in parallel, is turned on, preventing a current from flowing into the parasitic diode of the N-type DMOS transistor.