RS485/RS422 full-duplex transceiver at 250 kbps
The LTC2863IS8-2#PBF is a single-channel full-duplex transceiver supporting both RS422 and RS485 protocols at 250 kbps — the data rate that covers the majority of industrial fieldbus and building-automation links without the signal-integrity headaches of higher-speed variants. A 3V to 5.5V supply range lets it run from a common 3.3V rail or a legacy 5V bus without a separate regulator, simplifying BOM consolidation across mixed-voltage backplanes.
Receiver hysteresis and noise margin for long cable runs
The 150 mV of receiver hysteresis is the key differentiator here — it provides 50% more noise margin than the 100 mV typical of many RS485 parts, which matters when the cable runs past 100 meters in electrically noisy factory environments where common-mode transients couple into the twisted pair. Industrial temperature qualification from -40°C to 85°C means the part holds its timing and drive characteristics across the full range — no derating surprises when the enclosure sits in a sunlit panel or a cold warehouse.
Package and integration fit
Housed in an 8-SOIC (0.154-inch body width, 3.90 mm), the footprint is a standard SO-8 — no fine-pitch alignment needed, reworkable with a hot-air pencil, and the 1.27 mm pin pitch routes easily on a two-layer board. The tube packaging suits prototype and low-to-medium volume builds; for reel quantities the part is also orderable in tape-and-reel under a companion order code.
Lifecycle and compliance status
ROHS3 compliance covers the EU RoHS recast with all six substance restrictions plus the four phthalates — no exemption paperwork needed for EU-market equipment.