RS-485/RS-422 full-duplex transceiver for 5 V industrial buses
Supply rail and bus timing — what the ratings mean
The 115 Kbps data rate is the maximum signaling speed; for a 1000-foot RS-485 run at 115200 baud you have headroom, but if your application needs 1 Mbps or higher this part won't close timing. The 50 mV hysteresis cleans up slow edges on unterminated stubs — helpful in noisy factory-floor drops where the common-mode voltage swings. Full-duplex operation means separate pairs for TX and RX, so you need two twisted pairs in the cable, not one. The 14-SOIC footprint is a standard body width (3.90 mm) and matches the SN65HVD1791DR pinout — a direct drop-in for that base number.
Active lifecycle — safe for new BOMs
For a procurement desk qualifying a new 5 V RS-485 interface, this part carries no imminent obsolescence risk.