{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1231S-20+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1231S-20","canonicalUrl":"https://icboms.com/analog-devices/DS1231S-20","factsUrl":"https://icboms.com/api/mcp/products/DS1231S-20%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim DS1231S-20+, Simple Reset/Power-On Reset, 1-channel supervisor, dual threshold 4.37V/4.62V, 150ms minimum reset timeout, open-drain active high/active low output, 16-SOIC (7.50mm width), 0°C to 70°C, ROHS3 compliant.","salesMarkdown":"## What this supervisor does on your board The Maxim DS1231S-20+ is a Simple Reset/Power-On Reset supervisor that monitors a single voltage rail and holds the system in reset until the supply stabilizes. It asserts both active-high and active-low reset signals through an open-drain output, giving you flexibility to drive either polarity of the processor reset pin. The reset timeout is a minimum of 150 ms, which covers the power-up settling time for most MCUs and SoCs in this class. ## Package and temperature — board-fit check Housed in a 16-SOIC wide-body package (7.50 mm body width), surface-mount only. The 0°C to 70°C operating range limits this part to commercial-temperature environments — indoor equipment, office gear, appliances. Not rated for industrial enclosures, motor drives, or outdoor telecom where the ambient might dip below freezing or climb above 70°C. ## Lifecycle and compliance ROHS3 compliant. For BOM freeze or second-source planning, there is no official cross-reference — this is a Maxim-specific part, and a direct pin-compatible alternate would need to be validated against the same threshold and timeout specs.","metaTitle":"DS1231S-20+ Simple Reset/Power-On Reset IC","metaDescription":"Maxim DS1231S-20+ Simple Reset/Power-On Reset IC in 16-SOIC. Dual threshold 4.37V/4.62V, 150ms timeout, active high/low open-drain output.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Simple Reset/Power-On Reset","Reset":"Active High/Active Low","Output":"Open Drain or Open Collector","Package":"Tube","Mounting Type":"Surface Mount","Reset Timeout":"150ms Minimum","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Threshold":"4.37V, 4.62V","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"16-SOIC","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.07","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.07000","currency":"USD"},{"qty":10,"price":"$10.17500","currency":"USD"},{"qty":25,"price":"$9.75360","currency":"USD"},{"qty":100,"price":"$8.59370","currency":"USD"},{"qty":250,"price":"$8.17192","currency":"USD"},{"qty":500,"price":"$7.64468","currency":"USD"},{"qty":1000,"price":"$7.01203","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3f673acf3f763be47d1254f5cfbe0ef5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reset timeout of DS1231S-20+?","answer":"The reset timeout is a minimum of 150 ms. This covers the power-up settling time for most common MCUs and SoCs."},{"question":"Is DS1231S-20+ RoHS compliant?","answer":"Yes, the DS1231S-20+ is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1231S-20","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1231S-20 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}}