{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX815NCSA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX815NCSA~3","canonicalUrl":"https://icboms.com/analog-devices/MAX815NCSA~3","factsUrl":"https://icboms.com/api/mcp/products/MAX815NCSA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX815NCSA+ Simple Reset/Power-On Reset supervisor IC, active-low reset, push-pull output, 4.55V threshold, 140ms minimum timeout, 8-SOIC surface-mount package, 0°C to 70°C operating range.","salesMarkdown":"## What the 4.55 V threshold means for a 5 V rail The MAX815NCSA+ monitors a single 5 V supply and asserts a reset when the voltage drops to 4.55 V. That threshold sits at 91% of nominal — early enough to hold the processor in reset before the supply falls out of regulation, but late enough that a lightly loaded 5 V rail with ±5% tolerance never triggers a nuisance reset during normal ripple. The 140 ms minimum reset timeout gives the supply time to recover from a brown-out before the processor tries to re-execute from an undefined state. For a system with a bulk capacitor sized for 10 ms hold-up, the extra margin means the supervisor does not release reset until the rail is stable. ## Output type and system integration The active-low reset output is push-pull / totem-pole, so it drives the processor reset pin directly without an external pull-up resistor. This saves a component and eliminates the risk of the reset line floating during power-up if the pull-up rail comes up late. Because the output is push-pull, it can sink and source current — useful when the reset line also drives a status LED or a reset input on multiple peripherals on the same bus.","metaTitle":"MAX815NCSA+ Simple Reset/Power-On Reset, 4.55V Threshold","metaDescription":"Analog Devices MAX815NCSA+ supervisor IC, active-low reset, 140ms timeout, 4.55V threshold, 8-SOIC. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Type":"Simple Reset/Power-On Reset","Reset":"Active Low","Output":"Push-Pull, Totem Pole","Package":"Tube","Mounting Type":"Surface Mount","Reset Timeout":"140ms Minimum","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Threshold":"4.55V","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"8-SOIC","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.91","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$15.91000","currency":"USD"},{"qty":10,"price":"$14.62000","currency":"USD"},{"qty":25,"price":"$14.01360","currency":"USD"},{"qty":100,"price":"$12.34720","currency":"USD"},{"qty":250,"price":"$11.74124","currency":"USD"},{"qty":500,"price":"$10.98376","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/484d67c1e8f0680f6ee06e34a43133e0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reset threshold and timeout for MAX815NCSA+?","answer":"The reset threshold is 4.55 V and the reset timeout is 140 ms minimum. The output is active-low, push-pull."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX815NCSA~3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX815NCSA~3 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}}