Darlington Switch, Darlington Array, USB Full Speed, USB Full Speed

 Maxim Integrated MAX3490EESA+ in Tube. MAX3490E Series 3.3 V 12 Mbps Slew-Rate-Limited RS-485/RS-422 Transceiver.

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/max3490eesa-maxim-integrated-7085441