FUNCTIONALLY COMPLETE TOLERANT ELEMENT Russian patent published in 2015 - IPC H03K19/94 

FIELD: radio engineering, communication.

SUBSTANCE: device comprises 8 CMIS transistors with n-type conductivity (1-8) and 8 CMIS transistors with p-type conductivity (9-16), connected between a power bus (17) and a neutral bus (18), to the gates of which input signals (19-26) are transmitted. As a result, a basic logic function $$Z=(\overline{X_{1.1}}\vee \overline{X_{2.1}}\vee \overline{X_{1.2}}\vee \overline{X_{2.2}})\cdot (\overline{X_{1.3}}\vee \overline{X_{2.3}}\vee \overline{X_{1.4}}\vee \overline{X_{2.4}})$$ is obtained at the outputs of the element (27-30) which, under the condition that X₁=X_1.1=X_1.2=X_1.3=X_1.4 and X₂=X_2.1=X_2.2=X_2.3=X_2.4, realises the NAND function with fourfold redundancy, which is close to the "quadded logic" (interwoven logic) approach. The device maintains the type of function executed by the device with non-recurrent constant failures of inputs or transistors and can be used when detecting faults which satisfy given models of failures without carrying out additional reconfiguration procedures.

EFFECT: high reliability of the element in case of transistor failures by maintaining the type of the executed logic function with non-recurrent constant failures of the inputs of the element or transistors.

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