{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1306E+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1306E","canonicalUrl":"https://icboms.com/analog-devices/DS1306E","factsUrl":"https://icboms.com/api/mcp/products/DS1306E%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1306E+ Clock/Calendar RTC, SPI interface, 96B NVSRAM, Trickle-Charger, Alarm, Square Wave Output, 20-TSSOP, Tube.","salesMarkdown":"## RTC with SPI bus and integrated NVSRAM The DS1306E+ is a real-time clock (RTC) from Analog Devices that tracks time in HH:MM:SS (12/24 hr) and date in YY-MM-DD-dd format, with a 96-byte NVSRAM for storing configuration or event logs. Communication is over an SPI interface, making it straightforward to hang off a microcontroller's serial bus without dedicated parallel port pins. ## On-chip features for standalone operation Built-in features include a programmable alarm, leap-year compensation, a square-wave output for driving a periodic interrupt or LED, and a trickle-charger that can recharge a backup supercap or battery from the main supply. The 96-byte NVSRAM retains data through power loss as long as the battery voltage stays within the 2 V to 5.5 V range — no external EEPROM needed for small parameter storage. ## 20-TSSOP surface-mount package Housed in a 20-TSSOP (4.40 mm width) with a surface-mount footprint, the DS1306E+ fits on compact PCBs where board area is tight. Supplied in tube packaging — the exact ordering code DS1306E+ corresponds to the tube variant; if you need tape-and-reel, verify the suffix before placing the BOM.","metaTitle":"Analog Devices DS1306E+ RTC Clock/Calendar SPI 20-TSSOP","metaDescription":"DS1306E+ RTC from Analog Devices, SPI interface, 96B NVSRAM, trickle-charger, 2V-5.5V supply. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Clock/Calendar","Package":"Tube","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":"0°C ~ 70°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":"$6.95","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.95000","currency":"USD"},{"qty":10,"price":"$6.27600","currency":"USD"},{"qty":25,"price":"$5.98360","currency":"USD"},{"qty":100,"price":"$5.19560","currency":"USD"},{"qty":250,"price":"$4.96212","currency":"USD"},{"qty":500,"price":"$4.52430","currency":"USD"},{"qty":1000,"price":"$3.94052","currency":"USD"},{"qty":2500,"price":"$3.79457","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/55d50c97a413851453977cef1c1a2e6e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DS1306E+ available via RFQ confirmation and what is the lead time for an order?","answer":"Submit an RFQ for the DS1306E+ and we will provide a firm lead time and price from our authorized distribution network."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1306E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1306E 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}}