{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1337U+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1337U","canonicalUrl":"https://icboms.com/analog-devices/DS1337U","factsUrl":"https://icboms.com/api/mcp/products/DS1337U%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim DS1337U+ Clock/Calendar RTC, I²C 2-Wire Serial interface, 1.8V~5.5V supply, 0.6µA timekeeping current, -40°C~85°C, 8-uMAX/uSOP package, Tube.","salesMarkdown":"The Maxim DS1337U+ is a serial real-time clock (RTC) providing a full clock/calendar function — seconds, minutes, hours, day, date, month, and year with leap-year compensation. It communicates over an I²C (2-wire serial) interface. The part includes an alarm output and a programmable square-wave output. ## Lifecycle and compliance ROHS3 compliant, so it passes the current EU restriction list without exemptions. For a BOM freeze, this part is stable; no LTB risk in the near term. If you are stocking for a five-year service contract, the active status and wide supply range make it a safe line item.","metaTitle":"Maxim DS1337U+ RTC Clock/Calendar, I²C, 8-uMAX","metaDescription":"Maxim DS1337U+ RTC Clock/Calendar with I²C interface, 1.8V to 5.5V supply, 0.6µA timekeeping current, industrial temp range, ROHS3 compliant.","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","Interface":"I²C, 2-Wire Serial","Date Format":"YY-MM-DD-dd","Time Format":"HH:MM:SS (12/24 hr)","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"1.8V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-uMAX/uSOP","Current - Timekeeping (Max)":"0.6µA @ 1.3V ~ 1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.01","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.01000","currency":"USD"},{"qty":10,"price":"$3.60600","currency":"USD"},{"qty":25,"price":"$3.40880","currency":"USD"},{"qty":100,"price":"$2.95420","currency":"USD"},{"qty":250,"price":"$2.80276","currency":"USD"},{"qty":500,"price":"$2.51490","currency":"USD"},{"qty":1000,"price":"$2.12100","currency":"USD"},{"qty":2500,"price":"$2.01495","currency":"USD"},{"qty":5000,"price":"$1.93920","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/DS1337-DS1337C.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DS1337U+ a direct replacement for DS1337U?","answer":"The DS1337U+ is the lead-free (RoHS-compliant) version of the DS1337U. It is pin-compatible and functionally identical; the '+' suffix indicates ROHS3 compliance. Check your board's reflow profile for lead-free solder compatibility."},{"question":"Does DS1337U+ require an external crystal?","answer":"No external crystal is listed in the specifications. The DS1337U+ integrates the oscillator, so no 32.768 kHz crystal or load capacitors are needed on the BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1337U","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1337U 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}}