Trying to Find a Rad Hard I2C Buffer - does one exist?

[matthej]

Hi,

I need to design a rad hard (space grade) I2C buffer for my I2C interface. There are many commercial versions out there but can't find a rad hard (space grade) one.

Does anyone have any experience with this? Does one exist?

Can I make my own?

Thanks!

Matty

[Neomys Sapiens]

Did you try Avago, Cobham (caes.com), Teledyne e2v, Lansdale, whiteedc, Holt, Aeroflex, Omnirel, ?
There must be a solution,as it is flown already (Cubesats and other).
In how far does it even need a special driver other than one fitting the logic level?
Maybe look at the interface ICs and Buffers for which a SMD exists (via DLA)
or try here: https://nepp.nasa.gov/pages/npsl/mic/hyb/Nsl_sumh.cfm