Cd4051 Spice Model Link _hot_ May 2026

Finding a reliable SPICE model for the classic CD4051 8-channel analog multiplexer can be surprisingly difficult. Most manufacturers assume you are using the physical chip, leading to sparse support in simulation libraries.

Future-Proofing Your Simulation Library

To ensure you never lose your CD4051 SPICE model link again: cd4051 spice model link

Here is a solid piece detailing the best available resources, how to use them, and the caveats you must know when simulating this specific component. Finding a reliable SPICE model for the classic

3. Recommended Model Sources

Below are the verified sources for functional CD4051 SPICE models. Create a subcircuit with 16 pins

Groups.io LTspice Library: A frequently cited working SPICE model for the CD4051 (and CD4052/53) is available in the LTspice Groups.io files. This file typically contains subcircuit definitions for the entire 40xx analog switch series.

  1. Create a subcircuit with 16 pins.
  2. Use 8 voltage-controlled switches (SW), each with a custom RON and ROFF.
  3. Implement the truth table (3 address bits + inhibit) using logic gates (AND, NOT).
  4. Use the TABLE function to vary RON from 125 ohms (at 15V) to 10k ohms (at 3V).

The Critical Caveat: "Analog" vs. "Digital" Models

This is where most simulations fail. The CD4051 is an Analog multiplexer, but many online repositories host "Digital-only" models.