20 Mbps half-duplex RS485 — field-swappable industrial comms
The Maxim Integrated MAX14775EASA+T is a half-duplex RS422/RS485 transceiver in an 8-SOIC package, rated for 20 Mbps and a single 3 V to 5.5 V supply. It integrates one driver and one receiver with 250 mV of receiver hysteresis, which means it handles the noise on a long factory-floor cable run without adding external filtering. The –40°C to 125°C operating temperature range covers outdoor telecom cabinets, motor drives, and engine-bay modules — no derating needed for the hot end. If you are swapping one in the field, the 8-SOIC footprint is standard and the orientation is obvious from the pin-1 mark; no hot-air station required.
Supply range and 5 V compatibility
The 3 V to 5.5 V supply means this part runs on a 3.3 V or 5 V rail without a level shifter — useful when the rest of the board is 3.3 V logic but the bus transceiver needs the noise margin of a 5 V swing. The receiver hysteresis is fixed at 250 mV, so the input threshold does not drift with supply. For a layout engineer: decouple with a 0.1 µF ceramic close to the supply pin; the 8-SOIC body is 3.90 mm wide, so the footprint matches the standard SOIC-8 land pattern.
Active production — no LTB clock ticking
The MAX14775EASA+T carries an Active lifecycle status per the manufacturer. For a shortage-desk buyer: this is not a part you need to panic-buy or stockpile; the normal supply chain handles it.