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ISL3155EIBZ of 5V powered RS-485/RS-422 transceivers features high output drive and high ESD protection. The devices withstand ±16. 5kV IEC61000-4- 2 ESD strikes without latch-up. The large output voltage of 3. 1V typical into a 54Ω load provides high noise immunity, and enables the drive of up to 8000ft long bus segments, or eight 120Ω terminations in a star topology. These devices possess less than 125μA bus input currents, thus constituting a true 1/8 unit load. The high output drive combined with the low bus input currents allows for connecting up to 512 transceivers on the same bus. The receiver inputs feature a full fail-safe design that turns the receiver outputs high when the bus inputs are open or shorted. The ISL3155EIBZ includes half and full-duplex transceivers with active-high driver-enable pins and active-low receiver enable pins. These transceivers support data rates of 115kbps, 1Mbps, and 20Mbps. Their performance is characterized from -40°C to +85°C.

Features Of ISL3155EIBZ

High VOD: 3.1V (Typ) into RD = 54Ω

Low bus currents: 125μA constitutes a true 1/8 unit load

Allows for up to 512 transceivers on the bus

±16.5kV ESD protection on bus I/O pins

High transient overvoltage tolerance of ±100V

Full fail-safe outputs for open or shorted inputs

Hot plug capability - driver and receiver outputs remain high-impedance during power-up and power-down

Supported data rates: 115kbps, 1Mbps, 20Mbps

Low supply current (driver disabled): 550μA

Ultra-low shutdown current: 70nA

Applications Of ISL3155EIBZ

Automated utility e-meter reading systems

High node count systems

PROFIBUS and Fieldbus systems in factoryautomation

Security camera networks

Lighting, elevator, and HVAC control systems inbuilding automation

Industrial process control networks

Networks with star topology

Long-haul networks in coal mines and oil rigs

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