{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM6519ACARUB6F","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM6519ACARUB6F","canonicalUrl":"https://icboms.com/stmicroelectronics/STM6519ACARUB6F","factsUrl":"https://icboms.com/api/mcp/products/STM6519ACARUB6F","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics Smart Reset™ series, STM6519ACARUB6F Reset Timer, Active Low, Open Drain or Open Collector output, Adjustable/Selectable Reset Timeout, -40°C to 85°C, Surface Mount, 6-UDFN (1.45x1).","salesMarkdown":"## What this reset timer does that a simple reset IC can't The STMicroelectronics STM6519ACARUB6F is a Smart Reset™ timer IC — not just a voltage monitor. The open-drain output lets you wire-OR multiple reset sources or pull up to a different rail for level translation in mixed-voltage designs. Packaged in a 6-UDFN measuring 1.45x1 mm, it suits space-constrained PCBs where every square millimeter counts. The adjustable/selectable reset timeout is what separates this part from fixed-timeout reset ICs like the STM809 or STM706, which latch reset for a fixed 140 ms minimum. With the STM6519ACARUB6F you set the timeout via an external capacitor — useful when a slow-start power rail or a long oscillator startup needs more settle time before the CPU comes out of reset. The open-drain output also differs from the push-pull outputs on the STM809 and STM706. If your design already has a pull-up to the core voltage, the open-drain avoids contention and lets you share the reset line with other peripherals. For dual-sourcing or a pin-compatible backup, the STM1061N29WX6F is a functional peer — also active-low, open-drain, in a similar 6-pin package — though it is a simple reset IC with a fixed 30 µs propagation delay, not an adjustable timer. Evaluate the timeout flexibility before swapping.","metaTitle":"STM6519ACARUB6F Smart Reset Timer, Active Low, Open Drain","metaDescription":"STMicroelectronics STM6519ACARUB6F Smart Reset™ timer IC with adjustable/selectable timeout, active-low open-drain output, -40°C to 85°C, 6-UDFN.","metaKeywords":null},"attributes":{"series":"Smart Reset™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Reset Timer","Reset":"Active Low","Output":"Open Drain or Open Collector","Series":"Smart Reset™","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"Adjustable/Selectable","Package / Case":"6-UFDFN","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"6-UDFN (1.45x1)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.14","priceTiers":[{"qty":1,"price":"$1.14000","currency":"USD"},{"qty":10,"price":"$1.02200","currency":"USD"},{"qty":25,"price":"$0.96960","currency":"USD"},{"qty":100,"price":"$0.79660","currency":"USD"},{"qty":250,"price":"$0.74460","currency":"USD"},{"qty":500,"price":"$0.65802","currency":"USD"},{"qty":1000,"price":"$0.51949","currency":"USD"},{"qty":3000,"price":"$0.48486","currency":"USD"},{"qty":6000,"price":"$0.46062","currency":"USD"},{"qty":15000,"price":"$0.44330","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f935ed4cd81adfd192a1caacaf8560be.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM6519ACARUB6F/alternatives.json"},"ai":{"faq":[{"question":"What is the Smart Reset feature?","answer":"Smart Reset™ is STMicroelectronics' implementation of a reset timer that holds the reset output active for an adjustable/selectable period after the supply is valid. This prevents the processor from starting before the power rail and oscillator have settled, reducing the chance of erratic boot-up."},{"question":"How does STM6519ACARUB6F differ from standard reset ICs?","answer":"Standard reset ICs like the STM809 or STM706 release reset after a fixed timeout (e.g., 140 ms minimum). The STM6519ACARUB6F lets you adjust the timeout via an external capacitor, and its open-drain output allows wired-OR and level translation — standard reset ICs often use push-pull outputs."},{"question":"What are the alternatives to stm6519acarub6f?","answer":"The STM1061N29WX6F is a functional peer with active-low open-drain output in a similar package, but it is a simple reset IC with a fixed 30 µs propagation delay — not an adjustable timer. For fixed-timeout needs, the STM809 or STM706 (push-pull, 140 ms) are options, but they lack the adjustable timeout and open-drain flexibility."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM6519ACARUB6F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM6519ACARUB6F 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}}