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The Intersil ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E are ±16.5kV IEC61000 ESD Protected, 3.0V to 5.5V powered, single receivers that meet both the RS-485 and RS-422 standards for balanced communicaTIon. These receivers have very low bus currents(+125μA/-100μA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 receivers on the network without violaTIng the RS-485 specificaTIon’s 32 unit loadmaximum and without using repeaters.Receiver inputs feature a “Full Fail-Safe” design, whichensures a logic high Rx output if Rx inputs are floaTIng,shorted, or terminated but undriven.The ISL3280E and ISL3284E feature an always enabled Rx;the ISL3281E and ISL3285E feature an active high Rxenable pin, and the ISL3282E and ISL3283E include an active low enable pin. All versions are offered in Industrial and Extended Industrial (-40°C to +125°C) temperature ranges.
