{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX6339BUT","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX6339BUT","canonicalUrl":"https://icboms.com/analog-devices/MAX6339BUT","factsUrl":"https://icboms.com/api/mcp/products/MAX6339BUT","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX6339BUT Multi-Voltage Supervisor, 4-channel, Active Low reset, Open Drain output, 140ms min reset timeout, SOT-23-6, -40°C to 85°C.","salesMarkdown":"## Four-rail voltage watchdog in a SOT-23-6 The MAX6339BUT from Maxim Integrated is a multi-voltage supervisor that monitors four supply rails simultaneously. It tracks three fixed thresholds at 2.19 V, 3.08 V, and 4.63 V, plus one adjustable input for a custom voltage, all in a six-pin SOT-23-6 package. The open-drain, active-low reset output asserts when any monitored voltage falls below its threshold and holds for a minimum of 140 ms after all rails recover — enough time for most power supplies and system clocks to stabilise before the processor starts. Rated for the industrial temperature range of -40°C to 85°C, this part fits into outdoor telecom cabinets, factory automation controllers, and any board where multiple supply rails need a single-package supervision solution. The SOT-23-6 footprint keeps the board area small, and the open-drain output lets multiple supervisors share a common pull-up resistor on a shared reset line. ## Thresholds and the adjustable channel Three of the four monitored thresholds are factory-set: 2.19 V, 3.08 V, and 4.63 V. The fourth channel is adjustable via an external resistor divider. ## Reset timing and output drive The 140 ms minimum reset timeout is long enough to ride through a brief brown-out without a false reset, but short enough that the system does not sit idle for a quarter-second after the rails come up. The open-drain output sinks current when the reset is asserted; you supply the pull-up resistor to the logic supply. ## Lifecycle and compliance note One catch: the part is RoHS non-compliant, so it is not suitable for new designs that must meet the EU RoHS directive. For legacy boards or military/aerospace projects where leaded solder is still specified, that is not a blocker — but a BOM reviewer should flag it if the assembly house requires RoHS. ## Sourcing and availability This part is sourced through independent distribution channels. Because it is an active part with no LTB risk, it can be specified into a production BOM with confidence that the supply chain will support it for the foreseeable future.","metaTitle":"MAX6339BUT Multi-Voltage Supervisor, 4-Channel, SOT-23-6","metaDescription":"MAX6339BUT Multi-Voltage Supervisor monitors 4 voltages (2.19V, 3.08V, 4.63V, Adj). Active Low reset, 140ms timeout, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Multi-Voltage Supervisor","Reset":"Active Low","Output":"Open Drain or Open Collector","Package":"Bulk","Mounting Type":"Surface Mount","Reset Timeout":"140ms Minimum","Package / Case":"SOT-23-6","lifecycle_stage":"eol_hot","Voltage - Threshold":"2.19V, 3.08V, 4.63V, Adj","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"SOT-23-6","Number of Voltages Monitored":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.74","stockQuantity":0,"priceTiers":[{"qty":110,"price":"$2.74000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9b4f972373ea08b6904ae071637af81f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is MAX6339BUT's listed reset type?","answer":"The reset is Active Low with an Open Drain or Open Collector output."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX6339BUT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX6339BUT 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}}