TSOT-23-8 RS485 transceiver — 500 kbps on a 3 V to 5.5 V rail
The THVD8000DDFR is a half-duplex RS485 transceiver from Texas Instruments in a TSOT-23-8 package (also listed as SOT-23-8). It integrates one driver and one receiver, handling differential data at up to 500 kbps over a single twisted pair. Supply range is 3 V to 5.5 V, covering both 3.3 V and 5 V logic rails without a separate level translator. The 40 mV receiver hysteresis filters out noise on a shared bus, reducing false edges on long cable runs. Operating temperature spans -40°C to +125°C — this is the full industrial-to-automotive ambient band. An engine-bay ECU or a rooftop solar inverter that sees 105°C still has margin before the silicon derates.
Package and footprint — SOT-23-8 / TSOT-23-8
Surface-mount in a SOT-23-8 (TSOT-23-8) package. The 8-pin footprint is compact — roughly 2.9 mm × 1.6 mm — so it fits on a 2-layer board with passive pull-up and termination resistors in the same corner. The exposed pad (if any) is not listed; assume standard SOT-23-8 land pattern per TI's package drawing. Tape-and-reel packaging supports automated pick-and-place for volume assembly. The reel quantity is not specified here, but the TR suffix on the order code indicates reel packaging.
Sourcing and compliance
ROHS3 compliant.