What this RS485 transceiver brings to the BOM
The THVD1420DRLR is a half-duplex RS422/RS485 transceiver from Texas Instruments rated for 12 Mbps signaling over a single differential pair, with a single driver and receiver (1/1) integrated in the SOT-583 package. Supply voltage spans 3 V to 5.5 V, covering both 3.3 V and 5 V industrial logic rails without a separate level translator. The 50 mV receiver hysteresis filters noise on long cable runs — a practical margin for factory-floor RS485 buses where ground potential differences and EMI are common. Operating temperature range -40°C to 125°C covers industrial enclosures and engine-bay applications where ambient heat exceeds 85°C.
Package and PCB integration
Housed in a SOT-583 package (1.6 mm × 1.6 mm, 8-pin), the THVD1420DRLR is a surface-mount device suited for dense PCB layouts where board space is at a premium. The small footprint demands a tight decoupling layout — place a 100 nF ceramic cap within 2 mm of the supply pin to keep the transceiver's edge rates clean on the 12 Mbps bus.
Lifecycle and sourcing posture
Sourced through independent distribution channels; availability and current pricing confirmed at RFQ for the BOM quantity.