{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840PL33DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840PL33DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840PL33DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3840PL33DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840PL33DBVR, Simple Reset/Power-On Reset IC, monitors a single 3.3V supply, Active Low push-pull output, 619 ms typical reset timeout, SOT-23-5 package, -40°C to 125°C operating range.","salesMarkdown":"## 3.3V rail supervisor with 619 ms timeout The TPS3840PL33DBVR is a nanopower Simple Reset/Power-On Reset IC from Texas Instruments, designed to monitor a single 3.3V supply rail and assert a reset signal when the voltage drops below the threshold. The reset output is Active Low with a push-pull, totem pole stage, meaning it drives the reset line low during undervoltage and releases it high when the supply recovers, with no external pull-up resistor needed. A typical reset timeout of 619 ms holds the reset line low after the supply stabilises, giving the downstream MCU or SoC time to complete its power-on sequence before code execution starts. Housed in a SOT-23-5 (SC-74A) package, it occupies minimal board area and routes easily on a 2-layer PCB — the 5-pin footprint keeps the fan-out simple for the supply and reset traces.","metaTitle":"TPS3840PL33DBVR Simple Reset IC 3.3V Active Low SOT-23-5","metaDescription":"Texas Instruments TPS3840PL33DBVR Simple Reset/Power-On Reset IC, monitors 3.3V rail, 619ms timeout, -40°C to 125°C, SOT-23-5. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Type":"Simple Reset/Power-On Reset","Reset":"Active Low","Output":"Push-Pull, Totem Pole","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"619ms Typical","Package / Case":"SC-74A, SOT-753","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Threshold":"3.3V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8700","priceTiers":[{"qty":1,"price":"$0.87000","currency":"USD"},{"qty":10,"price":"$0.77500","currency":"USD"},{"qty":25,"price":"$0.73520","currency":"USD"},{"qty":100,"price":"$0.60400","currency":"USD"},{"qty":250,"price":"$0.56460","currency":"USD"},{"qty":500,"price":"$0.49894","currency":"USD"},{"qty":1000,"price":"$0.39390","currency":"USD"},{"qty":3000,"price":"$0.36764","currency":"USD"},{"qty":6000,"price":"$0.34926","currency":"USD"},{"qty":15000,"price":"$0.33613","currency":"USD"},{"qty":30000,"price":"$0.32562","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5dcd305c28a420a9fba5f8ee7f32ec1f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3840PL33DBVR/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout of the TPS3840PL33DBVR?","answer":"The typical reset timeout is 619 ms, which holds the reset line low after the monitored 3.3V rail rises above the threshold, allowing the system power-up sequence to settle."},{"question":"Is the TPS3840PL33DBVR suitable for battery-powered applications?","answer":"Yes — the nanopower design draws very low quiescent current, making it a good fit for battery-operated equipment where every microamp matters. The exact Iq is listed in the datasheet."},{"question":"When sourcing the TPS3840PL33DBVR, what is the closest functional second-source?","answer":"The TLV803EA29VDBZR is a peer device from Texas Instruments with a similar Simple Reset function and Active Low output, but it uses an open-drain output (requires external pull-up) and has a 130 ms minimum reset timeout versus the TPS3840PL33DBVR's 619 ms typical. The TLV803ED29DBZR offers a 33 ms minimum timeout. Neither is a drop-in replacement — check the output stage and timeout before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840PL33DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840PL33DBVR 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}}