{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX251CSD+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX251CSDT","canonicalUrl":"https://icboms.com/analog-devices/MAX251CSDT","factsUrl":"https://icboms.com/api/mcp/products/MAX251CSD%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX251CSD+T RS232 transceiver, full duplex 2/2, 14-SOIC surface mount, 4.5V to 5.5V supply, 600 mV receiver hysteresis, 0°C to 70°C operating temperature.","salesMarkdown":"## RS232 link for 5V-only serial ports The MAX251CSD+T: It handles the voltage-level translation between a 5V UART and the ±5V to ±15V RS232 bus, so no additional charge-pump or dual-rail supply is needed on the board. ## What the 600 mV hysteresis means for noise margin The receiver hysteresis is specified at 600 mV, which filters out noise on long or unshielded RS232 cable runs. A typical RS232 receiver without hysteresis might toggle on a 300 mV glitch; the 600 mV band means the input must cross a wider threshold before the output changes state, reducing false start-bit detection in electrically noisy environments like factory-floor serial links. ## 14-SOIC footprint and supply rails The single 5V supply rail simplifies the power tree — no 12V or -12V rails are required on the board for the RS232 interface.","metaTitle":"MAX251CSD+T Analog Devices RS232 Transceiver","metaDescription":"MAX251CSD+T RS232 transceiver from Analog Devices, full duplex 2/2, 4.5-5.5V supply, 14-SOIC. Active production, RoHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Type":"Transceiver","Duplex":"Full","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"RS232","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Receiver Hysteresis":"600 mV","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"14-SOIC","Number of Drivers/Receivers":"2/2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.91","stockQuantity":27,"priceTiers":[{"qty":1,"price":"$10.91000","currency":"USD"},{"qty":10,"price":"$9.85800","currency":"USD"},{"qty":25,"price":"$9.40000","currency":"USD"},{"qty":100,"price":"$8.16190","currency":"USD"},{"qty":250,"price":"$7.79504","currency":"USD"},{"qty":500,"price":"$7.10724","currency":"USD"},{"qty":1000,"price":"$6.19018","currency":"USD"},{"qty":2500,"price":"$5.96092","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the MAX251CSD+T's listed type and duplex?","answer":"It is a Transceiver with Full duplex operation, providing two drivers and two receivers for a complete RS232 serial port interface."},{"question":"What compliance documentation does Analog Devices provide for the MAX251CSD+T?","answer":"The part is RoHS3 Compliant per the manufacturer's listing. Additional compliance documentation such as REACH or conflict minerals reports would be available through the standard Analog Devices documentation channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX251CSDT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX251CSDT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}