-15kv Esd, 5v, Full Fail-safe, 1/8 Unit Load, Rs-485/rs-422 Transceivers

The ISL83080E ISL83082E ISL83083E ISL83084E ISL83085E ISL83086E ISL83088E are BiCMOS, ESD protected, 5V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced Communication Each driver output, and receiver input, is protected against 15kV ESD strikes without latch-up, and unlike competitive products, this Intersil family is specified for 10% tolerance supplies (4.5V to 5.5V). These devices have very low bus currents (+125A/-75A), so they present a true 1/8 unit load to the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specifications 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, individual meter readings are routed to a concentrator via an RS-485 network, so the high allowed node count minimizes the number of repeaters required. Data for all meters is then read out from the concentrator via a single access port, or a Wireless link. Receiver (Rx) inputs feature a Full Fail-Safe design, which ensures a Logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven. The ISL83080E ISL83082E ISL83083E ISL83084E ISL83085E utilize slew rate limited drivers which reduce EMI and minimize reflections from improperly terminated transmission lines, or unterminated stubs in multidrop and multipoint applications. Slew rate limited versions also include receiver input filtering to enhance noise immunity in the presence of slow input signals. By Intersil Corporation