Do not rely on a single link. Download the model from the manufacturer’s official product page. Copy the folder to your local machine. Always run a sanity-check simulation (like the sine wave test above) before trusting the model for complex PCB design.
When you obtain a SPICE model file (typically with a .lib or .txt extension), follow these steps to use it: cd4051 spice model link
: This is the most popular source for simulating 4000-series logic. The LTwiki CD4000 Library contains a comprehensive set of models, including the , maintained by the LTspice community. Do not rely on a single link
If you cannot find a specific CD4051 model, you can often use high-speed CMOS versions as a substitute for behavioral testing: cd4051 spice model link