Usually, if your IBIS model has the TV (Rising, falling) waveforms, this is the major delay part you would see in the simulation. However, HSpice did some Threshold tracking for their IBIS model simulations. This would cause some delay differences between HSpice and other IBIS simulators. It basically should be a smaller delay than HSpice simulation. Originally posted in cdnusers.org by lwang
Hope this helps.