{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1558Y+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1558Y","canonicalUrl":"https://icboms.com/analog-devices/DS1558Y","factsUrl":"https://icboms.com/api/mcp/products/DS1558Y%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated DS1558Y+ Clock/Calendar RTC, Parallel interface, YY-MM-DD-dd date format, HH:MM:SS (24 hr) time format, 4.5V-5.5V supply, -40°C to 85°C, 48-LQFP (7x7 mm), Tray.","salesMarkdown":"## Parallel-interface RTC with battery backup and watchdog The Maxim Integrated DS1558Y+ is a full-function real-time clock/calendar in a 48-LQFP package, communicating over a parallel bus — not the more common I²C or SPI. That parallel interface means it connects directly to the MCU's address/data bus without a serial-to-parallel conversion, which simplifies the layout on designs that already have a parallel memory or peripheral bus. The RTC tracks time in HH:MM:SS 24-hour format and date in YY-MM-DD-dd format, and it handles leap-year and Y2K rollover automatically. A built-in watchdog timer can reset the system if the host firmware stalls — a useful safeguard in unattended industrial controllers or remote data loggers. Operating temperature spans -40°C to 85°C, so it's rated for industrial enclosures, outdoor telecom cabinets, and engine-bay-adjacent electronics that see temperature swings. The 48-LQFP (7x7 mm) footprint is a surface-mount package that reflows without special handling. ## Sourcing and lifecycle — active, no LTB risk The DS1558Y+ carries an Active product status and is ROHS3 compliant.","metaTitle":"DS1558Y+ RTC Clock/Calendar, Parallel Interface, 48-LQFP","metaDescription":"DS1558Y+ real-time clock/calendar with parallel interface, 4.5V-5.5V supply, -40°C to 85°C, ROHS3 compliant. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Clock/Calendar","Package":"Tray","Features":"Alarm, Leap Year, Watchdog Timer, Y2K","Interface":"Parallel","Date Format":"YY-MM-DD-dd","Time Format":"HH:MM:SS (24 hr)","Mounting Type":"Surface Mount","Package / Case":"48-LQFP","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply, Battery":"2.5V ~ 3.7V","Current - Timekeeping (Max)":"6mA @ 5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.41","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$12.41000","currency":"USD"},{"qty":10,"price":"$11.40300","currency":"USD"},{"qty":25,"price":"$10.93080","currency":"USD"},{"qty":80,"price":"$9.63088","currency":"USD"},{"qty":250,"price":"$9.15816","currency":"USD"},{"qty":500,"price":"$8.56732","currency":"USD"},{"qty":1000,"price":"$7.85830","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8b15bf491ac66d332bdd5e281169aec1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DS1558Y+ RoHS compliant?","answer":"Yes, the DS1558Y+ is ROHS3 compliant."},{"question":"Does DS1558Y+ have a watchdog timer?","answer":"Yes, the DS1558Y+ includes a watchdog timer that can reset the system if the host firmware stops responding."},{"question":"What is the difference between DS1558Y+ and DS1558Y?","answer":"The DS1558Y+ is the ROHS3-compliant version of the DS1558Y. Functionally they are identical — the '+' suffix indicates lead-free / RoHS compliance. If your BOM requires RoHS compliance, the DS1558Y+ is the correct order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1558Y","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1558Y 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}}