I have previously only massaged Philips/NXP/Nexperia logic models from the HCT and LVC families, but took a stab at the LVT since you specifically requested the 74LVT04 in the question comments. *Not asking for a software recommendation as I have a few. Question: How to simulate these 74LVTxx models?* Does this cir file need to be flattened by hand? * NOMINAL, SLOW, AND FAST FAB PROCESS CORNERS * UNCOMMENT ONLY THE DEVICE MODEL FILE DESIRED * Revision Comment: Subcircuits added for expansion of available LVT Only Cadence PSpice could 'simulate' the lvtps.cir file, but that doesn't help me add a 74LVTxx chip to a schematic. Editing a similar part with this *.cir in the DB editor led to many, many errors. Trying to import this into Multisim resulted in an unconnected spaghetti network. I went to NXP and downloaded the circa 1999 PSpice file holding a family of 74LVP models called lvtps.cir. Packages like Multisim and OrCad only have the basic models (e.g. I'd like to simulate the digital 74LVTxx chips with their analog characteristics.

Excess inputs subcircuit multisim 12