{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD77DGKR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD77DGKR","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD77DGKR","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD77DGKR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD77DGKR RS-422/RS-485 transceiver, full duplex, 50 Mbps data rate, 3V–3.6V supply, 8-VSSOP package, -40°C to 125°C.","salesMarkdown":"The Texas Instruments SN65HVD77DGKR is a full-duplex RS-422/RS-485 transceiver that pushes the data rate to 50 Mbps, putting it in the high-speed tier of the 65HVD7x family. Full-duplex operation means separate transmit and receive pairs, so the bus never needs direction switching — useful for point-to-point links where throughput matters and the protocol can dedicate two twisted pairs. Housed in an 8-VSSOP (DGK package code), the footprint matches the standard 8-MSOP / 8-TSSOP land pattern — 3.00 mm body width, 0.65 mm pitch. Surface-mount only; no through-hole variant. The small package suits space-constrained I/O cards and compact sensor modules, but the fine pitch means the reflow profile and solder-paste stencil aperture need attention for reliable assembly. That means no last-time-buy scramble and normal lead times through distribution. For dual-sourcing or a pin-compatible second source, the SN65HVD78 (same footprint, same supply range) drops the data rate to 20 Mbps but adds a lower-power mode — a trade worth knowing if the bus speed requirement is lower and quiescent current matters more.","metaTitle":"SN65HVD77DGKR RS-485/RS-422 Transceiver, 50 Mbps","metaDescription":"Texas Instruments SN65HVD77DGKR RS-485/RS-422 transceiver, 50 Mbps data rate, full duplex, 3V–3.6V supply, -40°C to 125°C.","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":"50Mbps","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm 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-VSSOP","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.0400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9087c32540c5c64471c20d05147d7cee.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD77DGKR/alternatives.json"},"ai":{"faq":[{"question":"Is SN65HVD77DGKR full duplex or half duplex?","answer":"It is full duplex, meaning separate transmit and receive signal pairs — no driver/receiver direction pin to toggle."},{"question":"Can SN65HVD77DGKR be used as a direct replacement for MAX485?","answer":"Not directly. The MAX485 is half-duplex and typically runs on 5 V, while the SN65HVD77DGKR is full-duplex and 3.3 V only. The pinout and protocol differ; a board redesign would be needed."},{"question":"What is the difference between SN65HVD77 and SN65HVD78?","answer":"The SN65HVD77 runs at 50 Mbps; the SN65HVD78 is limited to 20 Mbps but includes a low-power shutdown mode that drops quiescent current significantly. Both share the same footprint and supply range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD77DGKR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD77DGKR 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}}