IO with high EOS robustness
Some interfaces require a higher tolerance against EOS. Due to a lack of a better standards, companies tend to use IEC 61000-4-5 as reference to define the EOS tolerance. Sofics has been involved in the design of EOS tolerant IO's up to 17V in a typical 130nm process.
IEC 61000-4-5 protection upto 17V in 0.13um CMOS - successful