The best replacement for 485 is 422.

The best alternatives to 485 are rated as following:
★★★★★  422
★★★★  consular processing
★★★★  232
★★★  rs 232
★  rs 422
★  i 140
★  i 130
★  cx 475
★  dh 485
  rs422
  ds-230
  rs-422
  rj45
  aos
  rs232
  rs 485

Your alternative for 485 is not listed? Suggest!
Speaking about 485, one probably shouldn't forget about i-130.

Other search terms related to 485 and their ratings are:
★★★★★ i-130
★★★★★ i 765
★★★★ i-693
★★★ i 130
★★ ead
★ i 693
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Google Trends

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485
422
consular processing