{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD55DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD55DR","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD55DR","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD55DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD55DR RS-485/RS-422 full-duplex transceiver, 1 Mbps data rate, 4.5-5.5 V supply, 50 mV receiver hysteresis, 14-SOIC package, -40 to 85°C operating temperature.","salesMarkdown":"## Full-duplex RS-485/RS-422 transceiver at 1 Mbps The SN65HVD55DR is a full-duplex RS-485/RS-422 transceiver from Texas Instruments, rated for 1 Mbps data rate on a 4.5-5.5 V supply rail — the full-duplex architecture means it drives and receives simultaneously over a four-wire bus, which halves the cable count for point-to-point RS-422 links and eliminates the turnaround delay on multi-drop RS-485 networks. ## Supply voltage and noise margin The receiver hysteresis of 50 mV means the input differential threshold has a built-in dead band that rejects low-amplitude noise on the bus — on a 1 Mbps line with 120-ohm termination, this prevents the receiver from oscillating on the signal edges when the cable is unterminated or the stub length exceeds the rise-time budget. Housed in a 14-SOIC (3.90 mm width) package with a surface-mount footprint, the SN65HVD55DR is a standard SOIC-14 body — the 0.154-inch width matches the common narrow SOIC land pattern, and the 1.27 mm pin pitch is compatible with most automated soldering profiles. The supplier device package is 14-SOIC, so the reflow profile follows the standard JEDEC MSL level for this package family. The 1/1 driver/receiver count is a single-node transceiver; for multi-drop RS-485 networks, the driver output is designed to drive up to 256 unit loads on the bus.","metaTitle":"SN65HVD55DR RS-485/RS-422 Full-Duplex Transceiver, 1 Mbps","metaDescription":"Texas Instruments SN65HVD55DR full-duplex RS-485/RS-422 transceiver, 1 Mbps, 4.5-5.5 V supply, 50 mV hysteresis, 14-SOIC. Active production, sourced 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":"Full","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"$4.1200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/15420929753e46fc9bdf828de0b9eb53.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD55DR/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy SN65HVD55DR available via RFQ confirmation?","answer":"Submit an RFQ for current stock and lead time."},{"question":"What is the difference between SN65HVD55DR and SN65HVD54?","answer":"The SN65HVD55DR is a full-duplex transceiver, while the SN65HVD54 is a half-duplex device — the key difference is the bus architecture: full-duplex uses four wires (separate transmit and receive pairs) and allows simultaneous bidirectional communication, whereas half-duplex shares a single pair and requires direction control. Both operate at 1 Mbps and share the same 4.5-5.5 V supply range and 14-SOIC package."},{"question":"Can I use SN65HVD55DR for RS422 communication?","answer":"Yes, the SN65HVD55DR supports RS-422 protocol — the full-duplex transceiver with 1/1 driver/receiver is designed for point-to-point RS-422 links where a dedicated transmit pair and receive pair are used, eliminating the need for direction control."},{"question":"Is SN65HVD55DR compatible with 3.3V logic?","answer":"No, the SN65HVD55DR requires a 4.5-5.5 V supply and its logic levels are 5 V — it is not compatible with 3.3 V logic inputs. For 3.3 V systems, a level translator or a 3.3 V-rated RS-485 transceiver is needed."},{"question":"Is SN65HVD55DR a full or half duplex transceiver?","answer":"The SN65HVD55DR is a full-duplex transceiver — it has separate driver and receiver paths for simultaneous bidirectional communication over a four-wire bus."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD55DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD55DR 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}}