{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD71D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD71D","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD71D","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD71D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD71D, RS422/RS485 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 400kbps Data Rate, 3V~3.6V Supply, -40°C~125°C, 8-SOIC Package, Tube.","salesMarkdown":"The 70 mV receiver hysteresis cleans up noisy bus signals without external filtering. At 400 kbps this part sits in the mid-speed tier of RS485 transceivers — fast enough for Modbus RTU at 115.2 kbps with headroom, or Profibus DP at 12 Mbps it won't reach. If your application needs the full 10 Mbps or 50 Mbps class, this isn't the part; but for the majority of industrial sensor networks and PLC links, 400 kbps keeps the edge rates slow enough to run on unshielded twisted pair without worrying about reflections on a 100 m run. ## Full duplex vs half duplex — wiring matters Full duplex means separate transmit and receive pairs — four wires instead of two. The SN65HVD71D drives both pairs simultaneously, so your protocol layer doesn't need to manage direction turn-around. That's a clean fit for point-to-point RS422 links or multi-drop RS485 systems where the master talks on one pair and slaves reply on another. Just be sure your backplane or cable harness has the extra pair budgeted. ## 3.3 V supply — no 5 V tolerance If your system runs a 5 V bus or the UART on the controller side is 5 V, you'll need a level translator or a different transceiver variant. The bus pins (A, B, Y, Z) are RS485 levels, not logic levels — those are separate — but the VCC pin won't survive 5 V.","metaTitle":"SN65HVD71D RS485/RS422 Transceiver, Full Duplex, 400 kbps","metaDescription":"Texas Instruments SN65HVD71D full-duplex RS485/RS422 transceiver in 8-SOIC. 400 kbps data rate, 3V to 3.6V supply, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Mfr":"Texas Instruments","Type":"Transceiver","Duplex":"Full","Series":"-","Package":"Tube","Protocol":"RS422, RS485","Data Rate":"400kbps","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Base Product Number":"65HVD71","Receiver Hysteresis":"70 mV","Operating Temperature":"-40°C~125°C","Supplier Device Package":"8-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.0900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9087c32540c5c64471c20d05147d7cee.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD71D/alternatives.json"},"ai":{"faq":[{"question":"Is SN65HVD71D compatible with 3.3V logic?","answer":"It is not 5V tolerant on VCC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD71D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD71D when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}