{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX3440EESA+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX3440EESAT","canonicalUrl":"https://icboms.com/analog-devices/MAX3440EESAT","factsUrl":"https://icboms.com/api/mcp/products/MAX3440EESA%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX3440EESA+T, RS-422/RS-485 Transceiver, Half Duplex, 1/1 Drivers/Receivers, 250kbps, 4.75V to 5.25V Supply, 8-SOIC, -40°C to 85°C.","salesMarkdown":"## RS-485/RS-422 transceiver for industrial bus lines The Maxim Integrated MAX3440EESA+T is a half-duplex transceiver supporting both RS-485 and RS-422 protocols, with one driver and one receiver integrated in an 8-pin SOIC package. It operates from a single 5V supply (4.75V to 5.25V) and is rated for industrial temperature environments from -40°C to 85°C. The device is commonly used in factory automation, building control, and other differential-bus applications where robust communication over twisted-pair cabling is required. ## 250kbps data rate — what it means for bus timing Rated for a maximum data rate of 250kbps, this transceiver is suited for applications like PLC-to-sensor links, HVAC zone controllers, and serial data acquisition where throughput is modest but cable runs can extend beyond 100 meters. The slew-limited edge rate helps control EMI emissions on long stubs, a practical advantage when routing the bus through a factory floor or outdoor conduit. ## Receiver hysteresis and noise margin The receiver includes 25 mV of hysteresis, which improves noise immunity on differential lines subject to ground shifts or coupled interference. For a 5V bus with standard termination, this margin reduces the likelihood of bit errors on runs where common-mode noise is present but within the transceiver's input range. ## Lifecycle and sourcing This part is ROHS3 compliant.","metaTitle":"MAX3440EESA+T RS-485/RS-422 Transceiver, 250kbps, 8-SOIC","metaDescription":"MAX3440EESA+T half-duplex RS-485/RS-422 transceiver, 250kbps data rate, 5V supply, 8-SOIC. Industrial temp range -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Transceiver","Duplex":"Half","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"RS422, RS485","Data Rate":"250kbps","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Receiver Hysteresis":"25 mV","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.45","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.45000","currency":"USD"},{"qty":10,"price":"$6.73400","currency":"USD"},{"qty":25,"price":"$6.42040","currency":"USD"},{"qty":100,"price":"$5.57490","currency":"USD"},{"qty":250,"price":"$5.32432","currency":"USD"},{"qty":500,"price":"$4.85454","currency":"USD"},{"qty":1000,"price":"$4.22815","currency":"USD"},{"qty":2500,"price":"$4.07155","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX3440E-MAX3444E.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the lead time for MAX3440EESA+T?","answer":"Lead time is confirmed at quote time against an RFQ through independent distribution. Current availability and pricing are provided when you submit a request."},{"question":"Can I replace MAX3440EESA with MAX3440EESA+T?","answer":"The MAX3440EESA+T is the tape-and-reel packaged variant of the MAX3440EESA. The two share identical silicon and pinout; the only difference is the shipping medium. If your assembly line accepts reel packaging, the T-suffix part is a direct functional replacement."},{"question":"Is MAX3440EESA+T compatible with 3.3V logic?","answer":"No, this transceiver is designed for a 5V supply (4.75V to 5.25V) and its logic input thresholds are referenced to that rail. It is not rated for 3.3V logic compatibility without level translation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX3440EESAT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX3440EESAT 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}}