{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX6728KALTD3-T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX6728KALTD3-T","canonicalUrl":"https://icboms.com/analog-devices/MAX6728KALTD3-T","factsUrl":"https://icboms.com/api/mcp/products/MAX6728KALTD3-T","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX6728KALTD3-T, Power Supply Monitor, Active Low Reset, Open Drain Output, 3 Voltages Monitored, Thresholds 3.075V/4.625V/Adj, 140ms Min Reset Timeout, SOT-23-8, -40°C to 85°C.","salesMarkdown":"## Triple-voltage supervisor in a compact SOT-23-8 The Maxim Integrated MAX6728KALTD3-T is a triple-voltage power supply monitor that asserts an active-low reset signal when any monitored rail drops below its threshold. It tracks three voltages simultaneously with thresholds of 3.075 V, 4.625 V, and one adjustable input, making it a fit for multi-rail systems like industrial controllers, telecom line cards, and embedded computing modules where a single supervisor must watch the core, I/O, and auxiliary supplies. The open-drain output stays low for a minimum of 140 ms after all rails return above threshold, providing a clean power-good handshake to the processor or FPGA. The industrial temperature range (-40°C to 85°C) suits it for outdoor enclosures, factory-floor PLCs, and engine-bay electronics where ambient conditions swing widely. ## Threshold selection and reset timing The fixed thresholds at 3.075 V and 4.625 V cover common logic rails, while the adjustable input lets you set a third trip point with an external resistor divider. The 140 ms minimum reset timeout ensures the monitored devices complete their startup sequence before the reset is released, avoiding brown-out glitches during power-up. ## Package and mounting Housed in an 8-pin SOT-23 package, the MAX6728KALTD3-T is a surface-mount device that fits dense PCB layouts. The SOT-23-8 footprint is common among multi-voltage supervisors, so board layout reuse across similar parts is straightforward. ## Lifecycle and sourcing It is RoHS non-compliant, which matters for designs targeting EU RoHS exemptions or legacy BOMs that allow tin-lead finishes.","metaTitle":"MAX6728KALTD3-T Power Supply Monitor, Active Low, SOT-23-8","metaDescription":"MAX6728KALTD3-T is a triple-voltage power supply monitor with active-low open-drain output, 140ms min reset 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":"Power Supply Monitor","Reset":"Active Low","Output":"Open Drain or Open Collector","Package":"Bulk","Mounting Type":"Surface Mount","Reset Timeout":"140ms Minimum","Package / Case":"SOT-23-8","lifecycle_stage":"eol_hot","Voltage - Threshold":"3.075V, 4.625V, Adj","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"SOT-23-8","Number of Voltages Monitored":"3"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.01","stockQuantity":0,"priceTiers":[{"qty":150,"price":"$2.01000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a4d90b2ff3a6999812bd9ec183895b4c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to MAX6728KALTD3-T?","answer":"The MAX6728 family includes several threshold variants in the same SOT-23-8 footprint. For a specific alternative, compare the required threshold voltages against the family's fixed and adjustable options — the pinout and reset timing are consistent across the series."},{"question":"Can MAX6728KALTD3-T be used with a 3.3V microcontroller?","answer":"Yes. The 3.075 V threshold is designed to supervise a 3.3 V rail, and the active-low open-drain reset output connects directly to the microcontroller's reset input. The 140 ms minimum reset timeout gives the MCU adequate time to stabilize after power-up."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX6728KALTD3-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX6728KALTD3-T 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}}