{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840DL30DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840DL30DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840DL30DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3840DL30DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840DL30DBVR, Power Supply Monitor, 1-channel, active-low reset, open-drain output, 3 V threshold, 619 ms typical reset timeout, SC-74A / SOT-753 (SOT-23-5) package, -40°C to 125°C junction temperature.","salesMarkdown":"## What the 619 ms reset timeout buys you The TPS3840DL30DBVR holds the reset pin low for 619 ms typical after the 3 V threshold is crossed. That is a deliberate, long hold-off — enough for a bulk capacitor bank to charge and for a processor with a slow-start power rail to finish its power-on reset sequence. If your MCU or FPGA datasheet calls for a reset pulse wider than 500 ms, this part fits without an external RC delay. The output is open-drain, active-low. That means the reset pin floats high when the supply is good — you pull it up to whatever logic voltage the downstream device uses. For a 3.3 V microcontroller, connect a 10 kΩ resistor to 3.3 V and the supervisor output will drive the reset pin cleanly. The 3 V threshold triggers when the monitored rail drops below 3 V, which is a reasonable brown-out detection level for a 3.3 V system. SOT-23-5 (SC-74A) package — five pins, 0.95 mm pitch, easy to hand-solder with a fine-tip iron. No thermal pad, no exposed paddle.","metaTitle":"TPS3840DL30DBVR – TI Power Supply Monitor, 3 V Threshold","metaDescription":"Texas Instruments TPS3840DL30DBVR Power Supply Monitor, active-low reset, open-drain output, 619 ms 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":"Power Supply Monitor","Reset":"Active Low","Output":"Open Drain or Open Collector","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","Base Product Number":"TPS3840","Voltage - Threshold":"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":"$1.2100","priceTiers":[{"qty":1,"price":"$1.21000","currency":"USD"},{"qty":10,"price":"$1.08500","currency":"USD"},{"qty":25,"price":"$1.03000","currency":"USD"},{"qty":100,"price":"$0.84600","currency":"USD"},{"qty":250,"price":"$0.79080","currency":"USD"},{"qty":500,"price":"$0.69886","currency":"USD"},{"qty":1000,"price":"$0.55173","currency":"USD"},{"qty":3000,"price":"$0.39000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5c43cdc78d6ce4876119969a2f71b26e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3840DL30DBVR/alternatives.json"},"ai":{"faq":[{"question":"Is TPS3840DL30DBVR a direct replacement for TPS3840DL30DBVT?","answer":"The TPS3840DL30DBVR and TPS3840DL30DBVT share the same base product number TPS3840 and the same electrical specs — the suffix difference is packaging: DBVR is Tape & Reel (TR) and Cut Tape (CT), while DBVT is typically a different reel quantity or tube. Electrically they are identical; the DBVR is the more common reeled variant for pick-and-place."},{"question":"What is the closest functional second-source to TPS3840DL30DBVR?","answer":"The TLV803EA29VDBZR is a similar active-low, open-drain supervisor but with a 2.93 V threshold and a shorter minimum reset timeout of 130 ms. The TPS3840DL30DBVR's 619 ms typical timeout is significantly longer, so a direct swap without checking the downstream reset timing is not recommended."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840DL30DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840DL30DBVR 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}}