Hello all, I have a question about the device details in the PDK docs. The stated performance of a of fanout 1 inverter, using low-vt nmos and regular pmos, does not match what I see in spice simulation. I'm looking at the docs
here which say the minimum/maximum speed is 22/39 ps, but in simulation I measure 15/21 ps. Is there a reason for this difference? What does the manual mean when it says these are "EDR (e-test) specs"?