Field-swap fit: 2.5 Mbps on a DIP
The MAX490EEPA+ is a full-duplex RS-422/RS-485 transceiver from Analog Devices, pushing 2.5 Mbps on a single 5 V rail. That data rate is enough for most Modbus RTU and Profibus DP fieldbuses at reasonable cable lengths — you are not speed-limited unless the bus runs past a few hundred metres at full rate. Full-duplex operation means separate pairs for transmit and receive, so the protocol layer does not waste time turning the bus around. The 70 mV receiver hysteresis cleans up noise on long drops without external filtering.
The 8-pin DIP (0.300" width) is socket-friendly — you can swap it on site with a basic extraction tool and no hot-air station. Supply tolerance is 4.75 V to 5.25 V, which covers a 5 V rail with typical regulation margins. The 1/1 driver/receiver count suits point-to-point or multi-drop with one talker at a time.
Active production, ROHS3, through-hole sourcing
Lifecycle status is Active and the part is ROHS3 compliant. No stock-holding claim — we quote per RFQ.