Device for despatching a secure output command

摘要

The invention aims to provide a compact device for despatching a command. For this purpose, the invention proposes a novel type of output stage. A secure verification device of the despatching of a binary command signal from at least one conductor has an input terminal and an output terminal. Means of insertion despatch a verification message on said conductor. At least one optical coupler has an emission diode coupled to the conductor so as to copy the verification message when the binary signal is in a first state and not to copy it when it is in a second state different from the first state.