Cd4051 Spice Model Link |link| Jun 2026

Depending on your simulation environment, you can obtain the necessary .lib or .sub files from these reputable sources:

: Users often share custom libraries like SwitchAna.Lib which includes a .subckt 4051a model for more realistic transmission gate behavior. cd4051 spice model link

Finding a dedicated SPICE model for the analog multiplexer can be challenging because it is an older CMOS part. Most designers use generic subcircuits or newer functional equivalents like the for modern simulations. Key Download & Resource Links LTspice Community Models Depending on your simulation environment, you can obtain

Build a simple voltage follower circuit. Pass a DC voltage through the CD4051 into a load resistor. If the output voltage is ident to the input, you have a bad (ideal) model. If there is a slight voltage drop due to internal resistance, you have a solid model. Key Download & Resource Links LTspice Community Models