Enhancing ASICs reliability through the use of fault secure fail-safe multiplexer

In order to achieve the design of state-of-the-art high-safety systems implemented in ASICs, we must incorporate totally self-checking (TSC) functional blocks, totally self-checking checkers, error-indicators and fail-safe interfaces. This paper presents a design and implementation of a fault secure fail-safe multiplexer. The proposed multiplexer is constructed using a reliable fail-safe interface as basic building block that combines the checker function, the error-indication and the fault-tolerant output controller into one functional block.