Practical approach to asynchronous gate networks

In analysing sequential gate networks one must take into account the propagation delay of each gate. In conventional methods, state variables are associated with feedback loops, and a flow table based on these variables is constructed. This flow table may be incorrect if hazards are present, and an additional complex analysis is required to obtain the correct behaviour. In this paper, we describe a model in which a state variable is associated with each gate. This leads to a conceptually simple one-pass analysis procedure. The model is applied to the analysis of complex commercial flip-flops.