{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX6646MUA","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX6646MUA","canonicalUrl":"https://icboms.com/analog-devices/MAX6646MUA","factsUrl":"https://icboms.com/api/mcp/products/MAX6646MUA","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX6646MUA SMBus temperature sensor, digital local/remote, 11-bit resolution, 3V to 5.5V supply, 8-µMAX package, Bulk.","salesMarkdown":"The MAX6646MUA comes in an 8-µMAX package (3.00mm width, 8-TSSOP/8-MSOP footprint) — a small-outline surface-mount package that fits tight layouts and is straightforward to hand-solder or rework with a hot-air station. The Bulk packaging means you get tubes, not tape-and-reel; plan for manual placement or tube-fed pick-and-place if your line is set up for reels. ## What the key ratings mean for your BOM 11-bit resolution gives temperature steps of roughly 0.125°C — enough for system thermal management but not for precision metrology. The ±2°C typical (±3°C maximum) accuracy is the spec that matters: it's adequate for fan control, over-temperature alerts, and CPU throttling, but if you need ±0.5°C across the full range, this part isn't the one. The SMBus output ties directly to a PMBus or SMBus host controller without extra level translation. Local sensing covers 0°C to 100°C, the board's ambient range. Remote sensing goes from 60°C to 145°C — that's the range for a CPU core, GPU hotspot, or power FET case temperature. The remote diode is external; the sensor measures the Vbe change of a diode-connected transistor. This part survives cold soak and hot environments like engine bays or outdoor telecom cabinets, but the local sensing range is narrower (0°C to 100°C), so the die itself can be cold while the local channel is out of its specified range. ## Where this sensor fits in a system This is a discrete semiconductor — a digital temperature sensor used in thermal management for CPUs, FPGAs, power modules, and battery packs. The local channel monitors the board ambient; the remote channel monitors a hot component via an external diode. The One-Shot and Shutdown modes let you conserve power between readings, useful in battery-powered or duty-cycled systems.","metaTitle":"MAX6646MUA Analog Devices SMBus Temp Sensor, 11-bit, 8-µMAX","metaDescription":"MAX6646MUA digital local/remote temperature sensor, SMBus, 11-bit, 3-5.5V, -55 to 125°C, 8-µMAX. Active, RoHS non-compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Bulk","Features":"One-Shot, Output Switch, Programmable Limit, Shutdown Mode, Standby Mode","Resolution":"11 b","Output Type":"SMBus","Sensor Type":"Digital, Local/Remote","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","Test Condition":"60°C ~ 100°C (0°C ~ 125°C)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"8-µMAX","Accuracy - Highest (Lowest)":"±2°C (±3°C)","Sensing Temperature - Local":"0°C ~ 100°C","Sensing Temperature - Remote":"60°C ~ 145°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.42","stockQuantity":0,"priceTiers":[{"qty":124,"price":"$2.42000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e3ca7dae6ee0022ead80fc840a4ec35e.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX6646MUA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX6646MUA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}