Detection of multiple faults using SSFTS in CMOS logic circuits

With the increasing density of CMOS VLSI circuits, it is necessary to test for the combinations of different multiple faults. This paper studies the possibility of using single stuck-at fault test set (SSFTS) to detect multiple faults and their combinations. The paper shows that a single stuck-at fault test set can detect single and multiple self-feedback bridging faults, combinations of feedback bridging, input bridging and stuck-on faults when current monitoring is done. We also prove that a single stuck-at fault test set can detect the combination of single stuck-open fault and some other faults like bridging and stuck-on faults when both logic and current monitoring are done.<<ETX>>

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