RS-485 full-duplex transceiver for point-to-point links
It runs on a 4.75 V to 5.25 V supply and pushes data at 2.5 Mbps — enough for industrial fieldbus links, PLC-to-drive communication, or building-automation backbone runs.
Full-duplex wiring and receiver hysteresis
Full-duplex operation means you need a dedicated twisted pair for transmit and another for receive — four wires total, plus ground. The 70 mV receiver hysteresis gives noise immunity on the bus; in a noisy industrial environment that margin helps the receiver stay clean through cable-coupled interference.
Housed in an 8-uMAX/uSOP (0.118-inch body width, 3.00 mm), the MAX490CUA+ has a 0.65 mm pin pitch. The small thermal mass means it reflows quickly; a 260 °C peak profile with a 30-second above-liquidus window is safe. No exposed pad, so the hot-air station lifts the part cleanly without pad damage.