{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1391U-33+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1391U-33","canonicalUrl":"https://icboms.com/analog-devices/DS1391U-33","factsUrl":"https://icboms.com/api/mcp/products/DS1391U-33%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim DS1391U-33+, Clock/Calendar RTC, SPI interface, 2.97V–5.5V supply, -40°C to 85°C, 10-uMAX/uSOP package.","salesMarkdown":"## Temperature grade and environment Rated for -40°C to 85°C operation. The timekeeping current maxes at 175µA across the full supply range. ## Lifecycle and sourcing No end-of-life notice is on record, so the DS1391U-33+ is safe to specify for new designs and production builds.","metaTitle":"Maxim DS1391U-33+ RTC Clock/Calendar, SPI, 10-uMAX","metaDescription":"Maxim DS1391U-33+ SPI RTC with alarm, trickle-charger, square-wave output. Supply 2.97V–5.5V, industrial temp. Active, ROHS3. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Clock/Calendar","Package":"Tube","Features":"Alarm, Leap Year, Square Wave Output, Trickle-Charger","Interface":"SPI","Date Format":"YY-MM-DD-dd","Time Format":"HH:MM:SS:hh (12/24 hr)","Mounting Type":"Surface Mount","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.97V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"10-uMAX/uSOP","Voltage - Supply, Battery":"1.3V ~ 5.5V","Current - Timekeeping (Max)":"175µA @ 2.97V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.03","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.03000","currency":"USD"},{"qty":10,"price":"$4.51900","currency":"USD"},{"qty":25,"price":"$4.27240","currency":"USD"},{"qty":100,"price":"$3.70270","currency":"USD"},{"qty":250,"price":"$3.51280","currency":"USD"},{"qty":500,"price":"$3.15200","currency":"USD"},{"qty":1000,"price":"$2.65832","currency":"USD"},{"qty":2500,"price":"$2.52540","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/DS1390-DS1394.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DS1391U-33+ compatible with 3.3V logic?","answer":"Yes, the supply range of 2.97V to 5.5V includes 3.3V, so SPI signals are at 3.3V logic levels when powered from a 3.3V rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1391U-33","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1391U-33 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}}