I was suggested to use EMI2121 for EMI/ESD protection of my circuit by Microchip while interfacing with their MCP2210 interface controller. Searched online and have seen this being used in many applications but didnt come across one board design so far. EMI2121 package seems pretty good, but for me, I was not able to figure out how to route the differential USB pair to this package's 1 (D+) and 2(D-) pins without using vias and on the other hand they suggest not to use any vias for USB data lines while using similar length traces. Wish they designed this package in a more board designer friendly way by having Vbus, D- and D+ on one side and corresponding outputs on the other side.
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