{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1344D-33+T&R","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1344D-33TR","canonicalUrl":"https://icboms.com/analog-devices/DS1344D-33TR","factsUrl":"https://icboms.com/api/mcp/products/DS1344D-33%2BT%26R","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1344D-33+T&R SPI Clock/Calendar RTC, 96B NVRAM, Alarm, Trickle Charger, 14-TDFN (3x3) Exposed Pad, Tape & Reel.","salesMarkdown":"## SPI RTC with integrated NVRAM and trickle charger The DS1344D-33+T&R is an SPI real-time clock from Analog Devices that maintains seconds, minutes, hours, day, date, month, and year with automatic leap-year compensation through 2099. The time format is selectable 12-hour or 24-hour, and the date format is YY-MM-DD-dd. It includes 96 bytes of NVRAM for storing alarm thresholds or system status, a programmable square-wave output, and a trickle-charge circuit for charging a backup super-cap or battery from the main supply. The device operates from a main supply of 3.0 V to 5.5 V and a separate battery-backup supply from 1.3 V to 5.5 V, allowing the RTC to keep time when the main rail is off. Maximum timekeeping current is 120 µA to 160 µA at 3.63 V to 5.5 V, which sets the battery-life budget for a backup cell. The device is supplied on tape and reel (and cut tape) for automated assembly.","metaTitle":"DS1344D-33+T&R SPI RTC, 96B NVRAM, 14-TDFN","metaDescription":"Analog Devices DS1344D-33+T&R SPI real-time clock with alarm, trickle charger, 96B NVRAM. Active production, RoHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Type":"Clock/Calendar","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger","Interface":"SPI","Date Format":"YY-MM-DD-dd","Memory Size":"96B","Time Format":"HH:MM:SS (12/24 hr)","Mounting Type":"Surface Mount","Package / Case":"14-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"14-TDFN (3x3)","Voltage - Supply, Battery":"1.3V ~ 5.5V","Current - Timekeeping (Max)":"120µA ~ 160µA @ 3.63V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.02","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.02000","currency":"USD"},{"qty":10,"price":"$5.40900","currency":"USD"},{"qty":25,"price":"$5.11320","currency":"USD"},{"qty":100,"price":"$4.43140","currency":"USD"},{"qty":250,"price":"$4.20412","currency":"USD"},{"qty":500,"price":"$3.77236","currency":"USD"},{"qty":1000,"price":"$3.18150","currency":"USD"},{"qty":2500,"price":"$3.02242","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to DS1344D-33+T&R?","answer":"The DS1344 family shares the same SPI interface and 14-TDFN package, but pin compatibility should be verified against the specific variant datasheet."},{"question":"What is the timekeeping current draw of DS1344D-33+T&R?","answer":"Maximum timekeeping current is 120 µA to 160 µA when the main supply is 3.63 V to 5.5 V. This figure determines the battery-life budget for a backup coin cell or super-cap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1344D-33TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1344D-33TR 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}}