{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD31DG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD31DG4","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD31DG4","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD31DG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD31DG4 RS-422/RS-485 full-duplex transceiver, 5 Mbps data rate, 3V to 3.6V supply, 50 mV receiver hysteresis, -40°C to 85°C, 8-SOIC package.","salesMarkdown":"## RS-485/RS-422 full-duplex transceiver for 3.3 V industrial buses ## 5 Mbps data rate and 50 mV hysteresis — bus margin at speed At 5 Mbps the SN65HVD31DG4 handles Profibus and similar industrial fieldbus rates without stretching the bit time. The 50 mV of built-in receiver hysteresis means the part rejects differential noise on unterminated or lightly terminated stubs better than a plain comparator front-end — useful when the cable run exceeds a few metres in an electrically noisy environment. The full-duplex architecture keeps separate transmit and receive pairs, so no direction-control GPIO is needed; the bus is always listening. The supply range covers the common 3.3 V rail directly, so the transceiver's logic-level I/O mates with 3.3 V UARTs and MCUs without level shifters. Dropout margin at 3.0 V minimum accommodates a regulated rail that sags under load or through a long PCB trace. The single-supply scheme simplifies the BOM compared to a 5 V transceiver that would need an extra regulator or voltage translation. ## Active lifecycle — no end-of-life pressure for new designs","metaTitle":"SN65HVD31DG4 RS-485/RS-422 Transceiver, 5 Mbps, Full Duplex","metaDescription":"Texas Instruments SN65HVD31DG4 full-duplex RS-485/RS-422 transceiver. 5 Mbps data rate, 3V to 3.6V supply, 50 mV hysteresis, -40°C to 85°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":"5Mbps","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Base Product Number":"65HVD31","Receiver Hysteresis":"50 mV","Operating Temperature":"-40°C~85°C","Supplier Device Package":"8-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.9500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b478029e1adc17f2a0ac5127fa8c6674.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD31DG4/alternatives.json"},"ai":{"faq":[{"question":"Can SN65HVD31DG4 be used with a 3.3 V supply?","answer":"The logic-level I/O is compatible with 3.3 V UARTs and MCUs without external level translation."},{"question":"What is the difference between SN65HVD31DG4 and SN65HVD31DR?","answer":"The difference is the shipping medium: the DG4 suffix indicates tube packaging, while the DR suffix indicates tape-and-reel. For pick-and-place assembly the DR variant is the usual choice; for hand-assembly or low-volume prototyping the DG4 tube works fine."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD31DG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD31DG4 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}}