{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1746-70IND+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1746-70IND","canonicalUrl":"https://icboms.com/analog-devices/DS1746-70IND","factsUrl":"https://icboms.com/api/mcp/products/DS1746-70IND%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated DS1746-70IND+, Clock/Calendar RTC, Parallel Interface, 128KB NVSRAM, Y2K/Leap Year, 4.5V-5.5V, -40°C to 85°C, 32-EDIP Module, Tube.","salesMarkdown":"## What this RTC brings to the board The Maxim Integrated DS1746-70IND+ is a clock/calendar real-time clock with a built-in 128KB NVSRAM, accessed over a parallel interface. It tracks time in HH:MM:SS (24-hour format) and date in YY-MM-DD-dd, handles leap years and Y2K rollover, and runs from a 4.5V to 5.5V supply. The integrated NVSRAM eliminates the need for a separate battery-backed SRAM on the bus, saving board space and reducing BOM count in industrial controllers, data loggers, and embedded systems that need nonvolatile storage alongside timekeeping. ## 128KB NVSRAM — the real differentiator The 128KB of nonvolatile SRAM is what sets this part apart from a plain RTC. It retains data without a backup battery, so configuration parameters, calibration tables, or event logs survive a power loss. The parallel interface gives fast read/write access compared to serial RTCs, which matters when the host MCU polls time or logs data on a tight interrupt schedule. Timekeeping current is 4mA at 5V, typical for a parallel RTC with this memory density. ## Lifecycle and sourcing posture The DS1746-70IND+ carries an Active lifecycle status and is ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect, so it remains a safe BOM line for production builds.","metaTitle":"DS1746-70IND+ RTC Clock/Calendar, 128KB NVSRAM, Parallel","metaDescription":"Maxim DS1746-70IND+ RTC with integrated 128KB NVSRAM, parallel interface, -40°C to 85°C. Active lifecycle, ROHS3 compliant.","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":"Leap Year, NVSRAM, Y2K","Interface":"Parallel","Date Format":"YY-MM-DD-dd","Memory Size":"128KB","Time Format":"HH:MM:SS (24 hr)","Mounting Type":"Through Hole","Package / Case":"32-DIP Module (0.600\\\", 15.24mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"32-EDIP","Current - Timekeeping (Max)":"4mA @ 5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$46.66","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$46.66000","currency":"USD"},{"qty":10,"price":"$43.53400","currency":"USD"},{"qty":25,"price":"$41.70880","currency":"USD"},{"qty":100,"price":"$37.79870","currency":"USD"},{"qty":250,"price":"$36.49536","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/DS1746-DS1746P.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the DS1746-70IND+?","answer":"Within the same Maxim DS1746 family, the DS1746-70+ (commercial temperature, 0°C to 70°C) is pin-compatible but lacks the industrial temperature range. For a drop-in replacement with the same -40°C to 85°C rating, the DS1746-70IND+ is the industrial-grade variant itself — no direct second-source from another manufacturer is listed on this record."},{"question":"What compliance documentation does Maxim provide for the DS1746-70IND+?","answer":"The part is ROHS3 compliant. Standard documentation includes a datasheet and RoHS certificate of compliance. No UL or IEC certification is listed on this record."},{"question":"What is the DS1746-70IND+'s listed type and interface?","answer":"It is a Clock/Calendar RTC with a Parallel interface. Time format is HH:MM:SS (24-hour) and date format is YY-MM-DD-dd, with leap year and Y2K support."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1746-70IND","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1746-70IND 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}}