{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD55D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD55D","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD55D","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD55D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD55D, RS-422/RS-485 full-duplex transceiver, 1 Mbps data rate, 4.5 V–5.5 V supply, –40°C to 85°C, 14-SOIC package.","salesMarkdown":"## What this transceiver does on the bus The Texas Instruments SN65HVD55D is a full-duplex RS-422/RS-485 transceiver in a 14-SOIC package, rated for 1 Mbps signaling on differential buses. ## Full-duplex vs. half-duplex wiring Because this is a full-duplex part (separate driver and receiver pairs), it uses four wires on the bus — two for transmit, two for receive. That is the right choice for point-to-point links where the host and remote talk simultaneously, such as encoder feedback or multi-drop polled networks where the master listens while driving. If your design calls for a two-wire half-duplex bus (shared pair, direction toggled by a DE pin), this part still works: tie the receiver outputs to the driver inputs externally and control DE. The 1 Mbps data rate is the ceiling; at that speed, cable length should be kept under roughly 400 feet for reliable edge detection, derating with longer runs. That means it remains a valid choice for new BOM entries and production builds without an imminent obsolescence risk. For second-source flexibility, the 65HVD55 family includes several speed and package variants; the closest pin-compatible sibling within the same 14-SOIC footprint is the SN65HVD54D (half-duplex, same supply and temp range) if your bus topology changes later. ## Sourcing this part for your BOM For a production BOM line, submit an RFQ with your annual volume and target price; the quote will reflect the multi-source supply base for this active TI transceiver.","metaTitle":"SN65HVD55D RS-485/RS-422 Transceiver, 1 Mbps, Full Duplex","metaDescription":"Texas Instruments SN65HVD55D full-duplex RS-485/RS-422 transceiver, 1 Mbps data rate, 4.5V–5.5V supply, –40°C to 85°C, 14-SOIC. Active lifecycle.","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":"1Mbps","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"65HVD55","Receiver Hysteresis":"50 mV","Operating Temperature":"-40°C~85°C","Supplier Device Package":"14-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.9400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/063ae81a5aee27e74db5665a0c710c2c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD55D/alternatives.json"},"ai":{"faq":[{"question":"Can SN65HVD55D be used for half-duplex communication?","answer":"Yes, although it is a full-duplex transceiver with separate driver and receiver pairs, it can be wired for half-duplex operation by connecting the receiver outputs to the driver inputs externally and controlling the driver enable (DE) pin. The 1 Mbps data rate applies in either configuration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD55D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD55D 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}}