Dear all,

I would like to know the difference between LIFETIME vs END OF LIFETIME (EOL) of a circuit. And how to calculate both for a circuit in a SPICE simulation. 

For example,

1) a single PMOS i.e. considering NBTI lifetime and EOL calculation?

2) a single NMOS i.e. PBTI lifetime and EOL calculation?

3) inverter for both P/N BTI lifetime and EOL calculation?