{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD70D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD70D","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD70D","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD70D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD70D, RS422/RS485 Transceiver, Full Duplex, 400 kbps, 3V-3.6V Supply, -40°C to 125°C, 14-SOIC Package.","salesMarkdown":"Full-duplex means separate twisted pairs for TX and RX, so the bus wiring needs four wires instead of two — a detail that catches teams migrating from half-duplex designs. The 400 kbps data rate is a mid-speed industrial rate: fast enough for most PLC-to-sensor links and building-automation loops, but not so fast that cable termination becomes critical at short runs. ## 125°C rating — where this part goes and where it doesn't The 125°C junction rating gives headroom for self-heating at the 400 kbps switching rate. If your design stays below 85°C ambient, the thermal margin is generous; if you are pushing 125°C ambient, verify that the total power dissipation stays within the package limits at the full supply voltage. For a procurement buyer qualifying this into a production BOM, there is no imminent obsolescence risk. The base product number 65HVD70 covers several speed and package variants, so if a future design needs a different data rate or a smaller package, a pin-compatible sibling within the family is a straightforward swap without a board respin. ## Receiver hysteresis — why 70 mV matters on a noisy bus The receiver hysteresis is specified at 70 mV. This is the voltage gap between the switching thresholds — it prevents the output from chattering when the differential bus signal is slow or noisy. On a long cable run in an industrial environment with motor drives or VFDs nearby, that 70 mV of hysteresis is what keeps the UART from seeing false edges. A part with lower hysteresis (e.g., 30 mV) would need cleaner signal conditioning or shorter stubs.","metaTitle":"SN65HVD70D RS422/RS485 Transceiver, Full Duplex, 400 kbps","metaDescription":"TI SN65HVD70D is a full-duplex RS422/RS485 transceiver with 400 kbps data rate, 3V-3.6V supply, -40°C to 125°C range. Active lifecycle, 14-SOIC package.","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":"14-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Base Product Number":"65HVD70","Receiver Hysteresis":"70 mV","Operating Temperature":"-40°C~125°C","Supplier Device Package":"14-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.4000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9087c32540c5c64471c20d05147d7cee.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD70D/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between the SN65HVD70D and the SN65HVD72D?","answer":"Both are full-duplex RS485 transceivers in the same 14-SOIC package and supply range. The SN65HVD70D is rated at 400 kbps, while the SN65HVD72D supports a higher data rate. The 70D is the lower-speed option, suitable for longer cable runs where slew-rate limiting helps control EMI."},{"question":"Can the SN65HVD70D be used as a replacement for the SN65HVD75?","answer":"The SN65HVD75 is a half-duplex device, while the SN65HVD70D is full-duplex. They are not pin-compatible for a direct replacement without a board change. For a full-duplex replacement, the SN65HVD70D is the correct part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD70D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD70D 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}}