Faults 0/ a MOS network We consider once more the MOS network presented in section 5.2.2.3

(see Figure 5.15).

1. Compare the three logical functions performed by the circuit:

• for a faultless circuit,

• for fault F1 (a MOS is stuck-OFF),

• for fault F2 (short between two lines).

2. The logical function of the faultless circuit is not modified if inputs band c are permuted. What is the influence of this permutation on the failure induced by fault F2?
3. What is the influence of the 'stuck-ON' of transistor Tl (the transistor is always in an ON state)?

F1 Network N a b' T F2 b Figure 5.15. Faults of a MOS network