Intersil’s ISL3259E is a ±15kV IEC61000 ESD Protected, 5Vpowered, single transceiver that meets both the RS-485 andRS-422 standards for balanced communication. It alsofeatures the larger output voltage and higher data rate (up to100Mbps) required by high speed PROFIBUS applications.The low bus currents (+220μA/-150μA) present a “1/5 unitload” to the RS-485 bus, thus allowing up to 160 transceiverson the network without violating the RS-485 specification’sload limit, and without using repeaters.This transceiver requires a 5V supply, and delivers at least a2.1V differential output voltage. This translates into better noiseimmunity (data integrity), longer reach, or the ability to drive upto six 120Ω terminations in “star” or other non-standard bus topologies.