{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3126E15DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3126E15DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3126E15DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3126E15DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3126E15DBVR simple reset/power-on reset IC, active low open-drain output, 1.43V threshold, 100ms reset timeout, SOT-23-5 package, -40°C to 85°C operating temperature.","salesMarkdown":"## What this reset IC does on the board The TPS3126E15DBVR: The threshold is set at 1.43V, so it tracks a 1.5V or 1.8V core rail — the kind that powers a low-voltage MCU, FPGA, or DSP core. The reset output is active low, open-drain, which means it pulls the reset line low when the monitored voltage drops below threshold. You need an external pull-up resistor to Vcc of the processor — typically 10kΩ to 100kΩ. The open-drain topology lets multiple reset sources share the same line. ## Threshold voltage — the fit decision The 1.43V threshold is the single number that decides whether this part fits your rail. It triggers at roughly 1.43V, so it is designed for a nominal 1.5V or 1.8V supply. The part monitors one voltage only — no second channel for an I/O rail. If your design needs supervision on two independent supplies, you need two of these or a multi-voltage supervisor. Housed in a SOT-23-5 (SC-74A) package, this is a five-pin surface-mount part with 0.95mm pitch. The small footprint fits tight layouts on 2-layer boards.","metaTitle":"Texas Instruments TPS3126E15DBVR Simple Reset/Power-On","metaDescription":"Texas Instruments TPS3126E15DBVR simple reset/power-on reset IC, active low open-drain output, 1.43V threshold, SOT-23-5, -40°C to 85°C. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Type":"Simple Reset/Power-On Reset","Reset":"Active Low","Output":"Open Drain or Open Collector","Series":"-","Package":"Tape & Reel (TR)","Mounting Type":"Surface Mount","Reset Timeout":"100ms Minimum","Package / Case":"SC-74A, SOT-753","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3126","Voltage - Threshold":"1.43V","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1490","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/33ce582e7a8405bef9aabe534ac434b3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3126E15DBVR/alternatives.json"},"ai":{"faq":[{"question":"Is TPS3126E15DBVR active low or active high reset?","answer":"The reset output is active low — it pulls the reset line low when the monitored voltage is below the threshold. The output is open-drain, so an external pull-up resistor is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3126E15DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3126E15DBVR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}