Hello,I want to import the model at the attached link into LTSPICE.I have opened the spice section of the abt folder as shown below and the CIR file in LTSPICE.
then i opened a cir file as shown below.I tried to do right click on the name but its not generating model.
How to import properly the model into LTSPICE?
Thanks.
https://www.nexperia.com/products/a...rs-transceivers/inverters/series/74ABT04.html

 

To create a symbol from a netlist you need to click on a SPICE directive that says:
.subckt ....

The line in black text in your text snip may be something(?), like a comment without the leading *, but it is NOT a .subckt directive.

Do you actually read the HELP documentation, or do you just gloss over it and then do what you imagine might work?

ETA: It may have escaped your notice but these files from Nexperia are for Hspice or Pspice. I would not expect either any of these file collections to work in LTspice out of the box. The requirement for uncommenting lines of text in one of the files means you have to understand the whole structure of the file collection to understand WTF is going on. Maybe the conversion to work with LTspice is simple and easy for someone familiar with those other spice packages, but that would not be me. Maybe ask the folks at the LTspice group on groups.io

The alternative would be to obtain a version of the software for which the files were designed.

 

Hello Papabravo,could you post a link to the LTSPICE group?
Thanks.

 

Hello Papabravo,could you post a link to the LTSPICE group?
Thanks.

Sure:

Groups.io-Link

Click the signup button in the upper right hand corner to create an account with your email address. Once you have an account you can search for the LTspice group.

 

There are other 7404 models about. Do you have to model the 74ABT04 version?

 

No I don’t have to use but as close as possible will be good

 

Are there any particular features of the 7404 which are critical for your sim?

 

Hello , if there is 5V supply . Same time duration of delay between the input signal and output signal after the inverting
Thing close as possible to the properties of the data sheet below.
Is there some recommendation ?

https://assets.nexperia.com/documents/data-sheet/74ABT04.pdf

 

If your primary concerns are just the 5V logic high and a 4nS propagation delay (per the datasheet) you could simply use the native LTspice 'A' device inverter in the Digital folder, like this :

You might want to add an output resistance to allow for voltage drop as current is drawn.

 

Hello Alec_t,my INVcomponent doesnt have vhigh td ref properties.as shown below.
what could be done?
Thanks.

 

Right-click on the symbol and type the required parameter values in the Value field.
LTspice Help/LTspice/Circuit elements/A. Special-functions lists the parameters you can add.

 

Hello Alec_t, I have attached a print screen .
I don’t have such parameters in my model

 

hi yef,
Check these settings
E