{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN65HVD1794P","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN65HVD1794P","canonicalUrl":"https://icboms.com/texas-instruments/SN65HVD1794P","factsUrl":"https://icboms.com/api/mcp/products/SN65HVD1794P","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN65HVD1794P, RS-422/RS-485 Transceiver, Half-Duplex, 115 Kbps, 5 V supply, -40°C to 105°C, 8-DIP (0.300\", 7.62 mm), Through Hole, 8-PDIP.","salesMarkdown":"## What this transceiver does — and where it still fits ## 115 kbps data rate — design-in reality check At 115 kbps this part is not a candidate for high-speed fieldbuses like Profibus or CAN FD. It belongs in legacy RS-485 links — building automation, HVAC zone controllers, or industrial sensor networks where the bus clock stays under 100 kbaud. The half-duplex line means you need software-controlled direction gating or an automatic direction-sense circuit on the microcontroller side. ## 5 V only — no 3.3 V operation If your system is 3.3 V logic, you need a level translator or a 3.3 V-rated RS-485 part such as the SN65HVD1780 series. ## Industrial temperature grade — what it covers The PDIP package is through-hole, which simplifies rework and proto builds but takes up more board area than an SOIC footprint. ## Obsolete — last-time-buy reality TI has marked the SN65HVD1794P obsolete. Expect to work with a broker who can screen date codes and verify authenticity — PDIP packages are less commonly counterfeited than smaller SMT forms, but the usual MSL and bake requirements still apply.","metaTitle":"SN65HVD1794P RS-422/RS-485 Transceiver, Half-Duplex","metaDescription":"Texas Instruments SN65HVD1794P half-duplex RS-422/RS-485 transceiver. 115 kbps data rate, 5 V supply, -40°C to 105°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Interface & Transceivers"],"specifications":{"Mfr":"Texas Instruments","Type":"Transceiver","Duplex":"Half","Series":"-","Package":"Tube","Protocol":"RS422, RS485","Data Rate":"115Kbps","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"65HVD1794","Receiver Hysteresis":"50 mV","Operating Temperature":"-40°C~105°C","Supplier Device Package":"8-PDIP","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.9000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/aad2898557a070814fc45b76f50295db.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN65HVD1794P/alternatives.json"},"ai":{"faq":[{"question":"Is SN65HVD1794P obsolete?","answer":"Yes, TI has classified the SN65HVD1794P as obsolete. No official replacement part number has been published. For existing BOM lines, the part is available through surplus and independent distribution channels on a quoted-to-order basis."},{"question":"Can SN65HVD1794P be used with a 3.3 V supply?","answer":"No. Operating at 3.3 V will not meet the transceiver's internal bias requirements and will cause unreliable bus communication."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN65HVD1794P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN65HVD1794P when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}