{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1306EN+T&R","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1306ENTR","canonicalUrl":"https://icboms.com/analog-devices/DS1306ENTR","factsUrl":"https://icboms.com/api/mcp/products/DS1306EN%2BT%26R","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1306EN+T&R real-time clock/calendar, SPI interface, 96B NVSRAM, alarm, leap year, trickle-charger, 20-TSSOP, Tape & Reel.","salesMarkdown":"## SPI RTC with 96 bytes of NVSRAM and trickle-charge backup The DS1306EN+T&R is a real-time clock/calendar from Analog Devices, communicating over an SPI bus and maintaining time in 12- or 24-hour format with a YY-MM-DD-dd date register. It integrates 96 bytes of NVSRAM for user data retention, a programmable square-wave output, and a trickle-charger that keeps the backup battery topped off during main power. ## Timekeeping current and temperature envelope Timekeeping current draw is 25.3 µA typical at 2 V and rises to 81 µA at 5 V — the lower the supply, the less the battery drains during a power-loss event. ## 20-TSSOP footprint and surface-mount assembly Housed in a 20-lead TSSOP with 0.65 mm pitch and a 4.40 mm body width, the DS1306EN+T&R fits a standard SOIC-20 land pattern with minor pad-width adjustment. ## Active production and compliance status The device is RoHS3 compliant (2011/65/EU + 2015/863), with no restricted substances above the threshold limits.","metaTitle":"DS1306EN+T&R RTC Clock/Calendar, SPI, 20-TSSOP","metaDescription":"DS1306EN+T&R real-time clock with SPI interface, 96B NVSRAM, alarm, trickle charger. Active production, RoHS3 compliant. Sourced 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, NVSRAM, 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":"20-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"20-TSSOP","Voltage - Supply, Battery":"2V ~ 5.5V","Current - Timekeeping (Max)":"25.3µA ~ 81µA @ 2V ~ 5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.51","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.51000","currency":"USD"},{"qty":10,"price":"$5.88500","currency":"USD"},{"qty":25,"price":"$5.61120","currency":"USD"},{"qty":100,"price":"$4.87200","currency":"USD"},{"qty":250,"price":"$4.65308","currency":"USD"},{"qty":500,"price":"$4.24250","currency":"USD"},{"qty":1000,"price":"$3.69508","currency":"USD"},{"qty":2500,"price":"$3.55823","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/55d50c97a413851453977cef1c1a2e6e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the DS1306EN+T&R's listed type on this Microcontrollers & Processors line?","answer":"The type is Clock/Calendar — a real-time clock IC with SPI interface, alarm, leap-year compensation, and 96 bytes of NVSRAM."},{"question":"What compliance documentation does Analog Devices provide for DS1306EN+T&R?","answer":"Analog Devices provides RoHS3 compliance certification (ROHS3 Compliant). No REACH, UL, or IEC documentation is listed in the available records."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1306ENTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1306ENTR 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}}