: In LTspice, press S to add a SPICE directive and type: .include CD4000.lib (replacing with your actual filename).
: Open the .lib file in a text editor and find the line beginning with .SUBCKT CD4051 . cd4051 spice model link
* CD4051 behavioral model * VDD = 5V, VSS = 0V, VEE = -5V .SUBCKT CD4051_SWITCH A B INH VDD VSS VEE ... : In LTspice, press S to add a SPICE directive and type:
When using these models in LTspice or KiCad, consider these technical constraints often highlighted in professional forums: : In LTspice