{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1390U-3+T&R","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1390U-3TR","canonicalUrl":"https://icboms.com/analog-devices/DS1390U-3TR","factsUrl":"https://icboms.com/api/mcp/products/DS1390U-3%2BT%26R","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1390U-3+T&R Clock/Calendar RTC, SPI interface, 10-uMAX/uSOP, 2.7V-3.3V supply, -40°C to +85°C.","salesMarkdown":"## Active SPI RTC with trickle-charge and alarm The DS1390U-3+T&R is a real-time clock/calendar from Analog Devices, part of the DS1390 family, communicating over an SPI bus. It tracks time in HH:MM:SS:hh (12/24 hr) and date in YY-MM-DD-dd format, with an integrated alarm, leap-year compensation, and a square-wave output for system timing. A trickle-charger on the backup battery input (1.3V–3.7V) keeps the timekeeping alive when the main 2.7V–3.3V supply drops. ## 125 µA timekeeping at 2.7V–3.3V Maximum timekeeping current is 125 µA across the full 2.7V–3.3V supply range — important for battery-backed designs where quiescent draw directly affects cell life. Packaged in a 10-TFSOP/MSOP (0.118\", 3.00mm width) with a 10-uMAX/uSOP supplier device package — a compact footprint for space-constrained PCBs.","metaTitle":"DS1390U-3+T&R RTC Clock/Calendar, SPI, 10-uMAX/uSOP","metaDescription":"Active production DS1390U-3+T&R RTC from Analog Devices. SPI interface, 125µA timekeeping, -40°C to +85°C. Available to order, quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Clock/Calendar","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"2.7V ~ 3.3V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"10-uMAX/uSOP","Voltage - Supply, Battery":"1.3V ~ 3.7V","Current - Timekeeping (Max)":"125µA @ 2.7V ~ 3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.39","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.39000","currency":"USD"},{"qty":10,"price":"$3.94200","currency":"USD"},{"qty":25,"price":"$3.72680","currency":"USD"},{"qty":100,"price":"$3.23000","currency":"USD"},{"qty":250,"price":"$3.06432","currency":"USD"},{"qty":500,"price":"$2.74962","currency":"USD"},{"qty":1000,"price":"$2.31896","currency":"USD"},{"qty":3000,"price":"$2.20301","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1390U-3TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1390U-3TR 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}}