{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD77D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD77D","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD77D","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD77D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD77D, RS-422/RS-485 full-duplex transceiver, 50 Mbps data rate, 3V–3.6V supply, 1/1 driver/receiver, 70 mV hysteresis, -40°C to 125°C, 8-SOIC package.","salesMarkdown":"The SN65HVD77D is a full-duplex RS-485/RS-422 transceiver from Texas Instruments rated for 50 Mbps signaling. At that data rate the bus is limited to short cable runs — a few meters — but the throughput suits high-speed backplane links, motor-drive encoder interfaces, and industrial vision systems where the cable stays inside the cabinet. The full-duplex pair means simultaneous transmit and receive on separate twisted pairs, so no direction-toggle latency in the firmware loop. The receiver hysteresis is 70 mV, giving noise immunity on a loaded bus. TI lists the SN65HVD77D as Active. ## 3.3 V supply — 5 V logic needs a translator If the host UART or controller uses 5 V logic levels, the transceiver's input thresholds are not 5 V-tolerant — you need a level shifter or a resistive divider on the DI and RE/DE pins. The RO output swings to VCC, so a 5 V-logic receiver will see a 3.3 V high; that may or may not cross the VIH threshold depending on the controller family. Check the logic-family input thresholds before committing the BOM. Supplied in an 8-pin SOIC package (body 3.90 mm wide), surface-mount. The footprint is the standard SOIC-8 land pattern — no exposed pad, no thermal-via requirement.","metaTitle":"SN65HVD77D RS-485/RS-422 Transceiver, 50 Mbps, Full Duplex","metaDescription":"TI SN65HVD77D RS-485/RS-422 full-duplex transceiver, 50 Mbps data rate, 3V–3.6V supply, -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":"Full","Series":"-","Package":"Tube","Protocol":"RS422, RS485","Data Rate":"50Mbps","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Base Product Number":"65HVD77","Receiver Hysteresis":"70 mV","Operating Temperature":"-40°C~125°C","Supplier Device Package":"8-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.8400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/951f0576f7dcacc741975e18e12f400c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD77D/alternatives.json"},"ai":{"faq":[{"question":"Does SN65HVD77D work with 5V logic?","answer":"Interfacing with a 5 V UART or controller requires a level translator or a resistive divider on the driver and enable pins."},{"question":"What is the difference between SN65HVD77D and SN65HVD76D?","answer":"The SN65HVD77D is a full-duplex transceiver rated for 50 Mbps, while the SN65HVD76D is a half-duplex device rated for a lower data rate (typically 20 Mbps or 250 kbps depending on the variant). The SN65HVD77D uses separate twisted pairs for transmit and receive; the SN65HVD76D shares a single pair and requires direction control via the DE/RE pins."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD77D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD77D 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}}