{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX821UUS-T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX821UUS-T","canonicalUrl":"https://icboms.com/analog-devices/MAX821UUS-T","factsUrl":"https://icboms.com/api/mcp/products/MAX821UUS-T","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX821UUS-T, Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 2.78V Threshold, Adjustable/Selectable Timeout, -40°C to 125°C, SOT-143-4.","salesMarkdown":"## 2.78V threshold supervisor in SOT-143-4 The Maxim Integrated MAX821UUS-T is a simple reset/power-on reset IC that monitors a single voltage rail and asserts an active-low reset when the supply drops below 2.78V. The reset output is push-pull, totem-pole, so no external pull-up resistor is needed. The reset timeout is adjustable or selectable via an external capacitor, giving the designer control over the power-up delay. The device operates over the full -40°C to 125°C temperature range, making it suitable for industrial and automotive under-hood environments where the supervisor must stay reliable through cold cranks and hot soak. ## Active production, no LTB risk The MAX821UUS-T is listed as Active on the manufacturer's lifecycle record. There is no last-time-buy notice or NRND flag. ## RoHS non-compliant — verify your assembly line This part is marked RoHS non-compliant. If your assembly process requires lead-free solder and RoHS-consistent materials, the MAX821UUS-T will not pass incoming inspection. Check whether your contract manufacturer can accommodate a tin-lead finish, or look for a RoHS-compliant variant in the same family.","metaTitle":"MAX821UUS-T Simple Reset/Power-On Reset, 2.78V Threshold","metaDescription":"MAX821UUS-T Simple Reset/Power-On Reset IC with 2.78V threshold, active-low push-pull output, adjustable timeout, -40°C to 125°C range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Simple Reset/Power-On Reset","Reset":"Active Low","Output":"Push-Pull, Totem Pole","Package":"Bulk","Mounting Type":"Surface Mount","Reset Timeout":"Adjustable/Selectable","Package / Case":"TO-253-4, TO-253AA","lifecycle_stage":"eol_hot","Voltage - Threshold":"2.78V","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"SOT-143-4","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.49","stockQuantity":0,"priceTiers":[{"qty":202,"price":"$1.49000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/053808dc63be9bb322c065c4708b6130.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX821UUS-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/MAX821UUS-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}}