{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD1781DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD1781DR","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD1781DR","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD1781DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD1781DR, RS422/RS485 Transceiver, Half-Duplex, 1Mbps, 3.15V~5.5V, -40°C~125°C, 8-SOIC.","salesMarkdown":"## RS-485 transceiver with a wide supply range — what that buys you The 1 Mbps data rate is the standard speed for most Modbus and Profibus fieldbus nodes — fast enough for a few hundred feet of twisted pair without fighting signal-integrity issues. ## Temperature range and package — where this part lives The 8-SOIC footprint is a standard one — same land pattern as an SOIC-8 op-amp or a simple gate buffer — so layout reuse across a BOM is straightforward. Surface-mount only, no through-hole option. ## Receiver hysteresis — why 50 mV matters The 50 mV receiver hysteresis is a practical number: it keeps the bus from chattering when the differential signal is marginal or the cable picks up common-mode noise. A lower hysteresis part would need a cleaner signal or external termination tweaks; this one handles a fair amount of industrial hash without false triggers.","metaTitle":"SN65HVD1781DR RS422/RS485 Transceiver, Half-Duplex, 1Mbps","metaDescription":"Texas Instruments SN65HVD1781DR half-duplex RS422/RS485 transceiver. 3.15V-5.5V supply, 1Mbps, -40°C to 125°C, 8-SOIC. Active lifecycle, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Mfr":"Texas Instruments","Type":"Transceiver","Duplex":"Half","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"RS422, RS485","Data Rate":"1Mbps","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 5.5V","Base Product Number":"65HVD1781","Receiver Hysteresis":"50 mV","Operating Temperature":"-40°C~125°C","Supplier Device Package":"8-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.7900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e287f2226680a394c104a94bb30d6d78.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD1781DR/alternatives.json"},"ai":{"faq":[{"question":"Is SN65HVD1781DR compatible with 5V logic?","answer":"At 5 V supply the bus output levels are fully 5 V compliant."},{"question":"What are the differences between SN65HVD1781DR and SN65HVD1780?","answer":"The SN65HVD1780 is also a half-duplex RS-485 transceiver in the same 8-SOIC package with the same supply range and temperature grade, but it runs at a lower data rate. The SN65HVD1781DR is the 1 Mbps variant; the SN65HVD1780 is the slower sibling. Pin-compatible, same footprint — the choice is speed versus margin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD1781DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD1781DR 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}}