https://www.analog.com/en/products/max4051.html (Under "Documentation" → "SPICE Model")
CMOS switches can introduce rapid transitions that confuse SPICE solvers. To fix this, add small parasitic elements to your circuit, such as a
This is the for a CD4051 SPICE model. It was created by a community member and is hosted on the LTspice Groups.io forum. This library contains robust subcircuits for the CD4051, CD4052, and CD4053 analog multiplexers, as well as for related analog switches like the 4016 and 4066.
, which is an 8:1 analog multiplexer that can often serve as a functional substitute in simulations. Suggested Functional Alternatives (with PSPICE Models) cd4051 spice model link
Finding a dedicated SPICE model for the analog multiplexer can be challenging because it is a legacy CMOS part. Many manufacturers do not provide standalone SPICE models for these older logic ICs directly on their product pages. TI E2E support forums Available Models and Alternatives LTspice Community Models
* CD4051 behavioral model * VDD = 5V, VSS = 0V, VEE = -5V .SUBCKT CD4051_SWITCH A B INH VDD VSS VEE ...
: You can download the widely used CD4000_v.lib which includes subcircuits for various 4000-series logic, including multiplexers. GitHub Repositories https://www
CD4051B data sheet, product information and support | TI.com
Download cd4051.lib and cd4051.asy (symbol) from their zip archive.
You can use the default Mux-8 symbol found in LTspice’s standard component library ( [Misc] or [Digital] directories). This library contains robust subcircuits for the CD4051,
After years of forum crawling and vendor link hunting, the most robust remains the official Texas Instruments model for the CD4051B. Use this direct approach:
(positive supply). If you are only switching positive analog signals, you must explicitly connect VEEcap V sub cap E cap E end-sub VSScap V sub cap S cap S end-sub