HD3SS215: Looking for junction temperature data for HD3SS215

Hello, Ben,

Let me double check on this for you.

However, the recommended operating temperature for this device is 0 to 70 deg C from spec below.

Thanks,

Zach

Ben,

You are correct. I am double checking on whether we have Tj specification data available.

What is the reason you are trying to calculate Tj? What is the application here?

You can use the calculations here in this app note link to get to a reasonable estimate for Tj depending on what you are trying to do.

 https://www.ti.com/lit/an/spra953c/spra953c.pdf?ts=1688059479365&ref_url=https%253A%252F%252Fwww.ti.com%252Flit%252Fds%252Fsymlink%252Fhd3ss215.pdf%253Fts%253D1688059399247%2526ref_url%253Dhttps%25253A%25252F%25252Fwww.ti.com%25252Fproduct%25252FHD3SS215

Thanks,

Zach

Hello,

You can get to Tj by using the Idd and Vdd sped to get your worst case power draw. This is going to be 3.6 V multiplied by 3.2 mA for this MUX. You can then multiply that by Junction-to-ambient thermal resistance to get the  ambient to junction difference between TA (provided by datasheet) and Tj.

Thanks,

Zach