{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM818MM6F","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM818MM6F","canonicalUrl":"https://icboms.com/stmicroelectronics/STM818MM6F","factsUrl":"https://icboms.com/api/mcp/products/STM818MM6F","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM818MM6F, Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 4.4V Threshold, 140ms Minimum Reset Timeout, 8-SOIC, -40°C to 85°C, Surface Mount.","salesMarkdown":"## Active-low reset — common polarity, easy integration The reset output is active low, meaning it pulls the reset line to ground when the supply is out of tolerance. Most MCUs, FPGAs, and DSPs expect an active-low reset input, so this part connects directly without inversion. The push-pull output stage sinks and sources current, so you don't need an external pull-up resistor — just route the output to the processor's reset pin. ## 140 ms reset timeout — enough for most power rails The minimum reset timeout of 140 ms gives the power supply time to ramp up and settle before the processor begins executing code. This is a standard duration that covers most linear and switching regulators. If your supply has a very slow ramp (e.g., large bulk capacitance or a soft-start regulator), verify that 140 ms is sufficient — otherwise the processor might start before the rail is fully stable.","metaTitle":"STM818MM6F Simple Reset/Power-On Reset, Active Low","metaDescription":"STMicroelectronics STM818MM6F Simple Reset/Power-On Reset IC. Active-low push-pull output, 4.4V threshold, 140ms min reset timeout. 8-SOIC, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Simple Reset/Power-On Reset","Reset":"Active Low","Output":"Push-Pull, Totem Pole","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"140ms Minimum","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Threshold":"4.4V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.35","priceTiers":[{"qty":1,"price":"$4.35000","currency":"USD"},{"qty":10,"price":"$3.91100","currency":"USD"},{"qty":25,"price":"$3.69720","currency":"USD"},{"qty":100,"price":"$3.20440","currency":"USD"},{"qty":250,"price":"$3.04004","currency":"USD"},{"qty":500,"price":"$2.72782","currency":"USD"},{"qty":1000,"price":"$2.30058","currency":"USD"},{"qty":2500,"price":"$2.18555","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/269e7803d93f5df009aa42fc88cb3103.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM818MM6F/alternatives.json"},"ai":{"faq":[{"question":"Is STM818MM6F active low or active high?","answer":"The STM818MM6F has an active-low reset output. The reset line goes low when the supply is out of tolerance, which is the standard polarity for most MCU and DSP reset inputs."},{"question":"What is the reset timeout for STM818MM6F?","answer":"The reset timeout is a minimum of 140 ms. After the supply returns above the threshold, the reset output stays active for at least 140 ms to allow the power rail to stabilize."},{"question":"What is the equivalent or replacement for STM818MM6F?","answer":"The closest functional peer is the STM809TWX6F, which shares the same reset type (active low, push-pull), 140 ms timeout, and 8-SOIC package. The key difference is the threshold voltage — verify the STM809's threshold matches your rail before substituting. The STM706M6F is another option but check its threshold and watchdog features if your design needs them."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM818MM6F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM818MM6F 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}}