Intersil ISL83483IBZ-T7A, Line Transceiver, RS-422, RS-485, 3.3 V, 8-Pin SOIC. RS-485 Line Drivers and Receivers, Intersil. 1x Altera EP3C5F256C8N, FPGA Cyclone III 5136 Cells, 5136 Blocks 256-Pin FBGA.
eBay