{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1391U-18","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1391U-18","canonicalUrl":"https://icboms.com/analog-devices/DS1391U-18","factsUrl":"https://icboms.com/api/mcp/products/DS1391U-18","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1391U-18 SPI real-time clock with trickle charger, Bulk package, active lifecycle, Analog & Data Acquisition.","salesMarkdown":"## SPI RTC with integrated trickle charge The DS1391U-18 is an SPI real-time clock from Analog Devices that integrates a battery-charge circuit with trickle charging, so a backup supercap or lithium coin cell stays topped off without an external charge-management IC. ## Active lifecycle and RoHS limitation It is listed as RoHS non-compliant, so designs requiring RoHS exemption or lead-free assembly must verify the exemption category or consider a pin-compatible alternative with RoHS certification.","metaTitle":"DS1391U-18 Analog Devices SPI RTC with Trickle Charger","metaDescription":"DS1391U-18 SPI RTC with trickle charger from Analog Devices. Active lifecycle, Bulk package.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.08","priceTiers":[{"qty":145,"price":"$2.08000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/85eb0e0f1b8b9a7de9f9719536ff6224.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/DS1391U-18/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1391U-18","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-18 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}