{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX3491ESD+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX3491ESD","canonicalUrl":"https://icboms.com/analog-devices/MAX3491ESD","factsUrl":"https://icboms.com/api/mcp/products/MAX3491ESD%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX3491ESD+, RS-422/RS-485 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 10 Mbps, 3V–3.6V, -40°C to 85°C, 14-SOIC.","salesMarkdown":"## What this transceiver is and where it fits The Maxim Integrated MAX3491ESD+ is a full-duplex RS-485/RS-422 transceiver in a 14-SOIC package, handling one driver and one receiver. It operates from a 3 V to 3.6 V supply and delivers a 10 Mbps data rate, making it a fit for high-speed industrial communication links such as PLC-to-sensor networks, motor drive interfaces, and building automation backplanes where the bus runs at 3.3 V logic levels. ## 10 Mbps in a 3.3 V system — what that means for the bus At 10 Mbps the MAX3491ESD+ supports the faster edge rates needed for Profibus and similar industrial protocols running over RS-485. The 50 mV receiver hysteresis provides noise immunity on long cable runs, which matters when the bus spans tens of metres in a factory-floor environment. The full-duplex capability means separate transmit and receive pairs, so the bus can sustain continuous back-to-back data flow without turnaround dead time — useful for encoder feedback or real-time control loops. ## Supply rail and temperature grade Rated for 3 V to 3.6 V, this part is designed for a regulated 3.3 V rail. It is not 5 V tolerant on the supply side — if the rest of the board runs 5 V logic, level translation on the digital I/O pins is needed. The industrial temperature range (-40°C to 85°C) covers outdoor telecom cabinets, unheated factory floors, and engine-adjacent enclosures without needing a military-grade part. ## Lifecycle and supply posture The MAX3491ESD+ carries an Active lifecycle status with ROHS3 compliance.","metaTitle":"MAX3491ESD+ RS-485/RS-422 Transceiver, 10 Mbps, 14-SOIC","metaDescription":"MAX3491ESD+ is a 3V–3.6V full-duplex RS-485/RS-422 transceiver with 10 Mbps data rate in a 14-SOIC package. Industrial temp range -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Transceiver","Duplex":"Full","Package":"Tube","Protocol":"RS422, RS485","Data Rate":"10Mbps","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","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":"$6.61","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.61000","currency":"USD"},{"qty":10,"price":"$5.97200","currency":"USD"},{"qty":25,"price":"$5.69400","currency":"USD"},{"qty":100,"price":"$4.94400","currency":"USD"},{"qty":250,"price":"$4.72176","currency":"USD"},{"qty":500,"price":"$4.30512","currency":"USD"},{"qty":1000,"price":"$3.74962","currency":"USD"},{"qty":2500,"price":"$3.61075","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/851f1d275481685ee0a5b944ad83039f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to MAX3491ESD+?","answer":"Within the same Maxim family, the MAX3491EESD+ is a direct functional equivalent with identical pinout and package, differing only in the extended temperature range (-40°C to 125°C). For a standard industrial temperature BOM, the MAX3491ESD+ is the cost-optimised choice."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX3491ESD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX3491ESD 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}}