TMUX7413F: Is there an available KiCad and/or other PCB software library file for this component or something similar? Also, unable to locate dimensions on data sheet-

Hey Matthew,

Thanks for reaching out and excited to hear about your project and hope all goes well! 

So to answer your questions, typically you can find the footprint in the CAD/CAE symbols library on the product page and going to this link: 

However, I'm seeing that we don't currently have a model uploaded here. 

You can try using another device that has the same package like the TMUX7462F.
That link should take you to the Ultra Librarian page where you can "Choose CAD Formats & Download" and select your version of KiCad to download the correct file. You may want to go in manually afterwards in KiCad and re-name the pins though since pins 6,7,14 and 15 are different between the TMUX7412F and TMUX7462F. Good news is that the rest of the pin functions remain the same. 


Now if for some reason that all doesn't work, it would look like, as you said, you may need to manually create the footprint. Page 45 of the datasheet shows the dimensions of the device itself : 

While page 46 shows the dimensions of the recommended land pattern: 

Let me know if this is enough for you or if you have any other questions!

Thanks!
Rami

Hi Rami,

I appreciate your swift reply, thank you for pointing me to the database of CAD documents.

As for the dimensions that are listed on page 45 of the datasheet, aren't those dimensions for the WQFN package? Can those dimensions be used for the TSSOP package? I was under the impression that the WQFN package of this component is 1 mm shorter in width, no?

Thanks in advance!

Depending on what you're trying to do, if the PW package is a must on your end, you could even try the TMUX7462F. It's similar to the TMUX741xF devices but you won't be able to control the switches. Essentially it's a fault protector more than a switch with fault protection feature. The Sx to Dx path will remain conducting until a fault is detected, which will trigger an overvoltage event and you can select whether the output will either then be left floating or pulled to the fault supply.

Let me know if that works for you. It currently has the PW package available, has an EVM if you wanted to use it for evaluation and you can use any generic PW footprint for it. The TMUX1574 looks like it has the Ultra Librarian uploaded properly so you can use that one for the footprint

Thanks,
Rami

That makes lots of sense. Thank you for the clarification.

Is there any rough estimate available as to when the TSSOP TMUX7413F will be purchasable? (I will be hand soldering and need to be able to control each switch.)

-Mathew

Hey Matthew, 

Unfortunately, I can't provide an estimate but the best case I can give you would be closer in the 2025 time frame at best so for your use case, since this is a senior design project, I would say it wouldn't be released on time.

If the fault protection feature is a must and you need it to be in TSSOP for solderability, then your only other option would be the TMUX7436F. 
It is a 2:1 (SPDT), but if you need 4 SPST (1:1) channels, you can use 2 of the TMUX7436F. You can tie both enable pins high and control the channels using SEL1 and SEL2 on both chips.
Your signals would go on all the A's (or all B's) and you'd have one unused channel. You can either leave it floating or put a pulldown like I did in S1B but leaving it floating should be fine. Typically  resistor there would be useful in high speed applications. You're probably working with lower frequencies so I wouldn't be worried about the extra resistors. 

Let me know if that made sense. I added an image to hopefully help it make more sense. You could even tie the enable pin to another GPIO output if you wanted to give you an easy way to activate all the channels on/off at the same time.



Thanks,
Rami