Cd4051 Spice Model Link Online

: Never leave unused output pins open in the simulation; adding high-value resistors (e.g., ) to ground prevents convergence errors.

The CD4051 SPICE model is a specific model that represents the behavior of the CD4051 analog multiplexer/demultiplexer IC. This model can be used to simulate the performance of the CD4051 in various applications, including: cd4051 spice model link

Make sure the order of the pins in your .SUBCKT line exactly matches the pins in your schematic symbol. : Never leave unused output pins open in