Because the CD4051 is essentially a set of eight voltage-controlled switches and a 3-to-8 decoder, many SPICE veterans don't use a link at all. They use a generic
A proper CD4051 SPICE subcircuit model does more than act as a perfect, idealized switch. To provide value in a transient or AC simulation, the subcircuit must account for the physical architecture outlined in the official Texas Instruments CD4051B Datasheet . Core Parameters Modeled cd4051 spice model link
The second hit was a StackExchange discussion from three years ago. A user named "mux_life" had posted a raw, text-based model: Because the CD4051 is essentially a set of
model in SPICE (LTspice, Multisim, or PSpice), keep these technical details in mind: Subcircuit Selection: Models labeled Core Parameters Modeled The second hit was a
: The on-resistance of the CD4051 varies significantly with supply. At RONcap R sub cap O cap N end-sub is typically hundreds of ohms, whereas at it drops to approximately