THVD1450: IEC 61000-4-5 competence

Hi Ryu,

THVD1450 is only rated and tested for IEC 61000-4-2 and 4-4, but not 4-5. We cannot guarantee anything outside what is specified in the datasheet. Normally I recommend ESDS552 as an external protection diode that protects up to 25A surge current. 

Alternatively, if you are seeking an RS-485 transceiver with integrated surge protection, here is a filtered listed with IEC 61000 4-5 integrated transceivers:

 https://www.ti.com/interface/rs-485-rs-422/products.html#2192=Surge%20protection&sort=976max;desc&

If you do not need the higher data rate, then I would look into THVD1449 which has integrated 15kV contact/air gap and 4kV surge protection. 

Let me know if that answers answers your question or if you have any other questions!

-Ethan

Hi Ryu,

The THVD1450's ESD structure was not specifically validated for that voltage/timing, but it is possible that it will survive since it is at a lower voltage (~50V). Of course, it will need to be externally validated as repeated testing at that voltage may cause long-term damage that cannot be immediately seen. I know that's not the answer you were hoping for, but there is not much more information I can provide as we just don't have data for it.

Best,

Ethan