{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840PH30DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840PH30DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840PH30DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3840PH30DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840PH30DBVR, power supply monitor, 1-channel, active-high push-pull reset, 3V threshold, 619 ms typical reset timeout, -40°C to 125°C, SOT-23-5","salesMarkdown":"## Single-channel supervisor with 3V threshold and active-high output The TPS3840PH30DBVR is a 1-channel power supply monitor from Texas Instruments that asserts a reset output when the monitored voltage drops below a 3V threshold. The reset output is active-high with a push-pull topology, so it drives a logic high during the reset condition and does not require an external pull-up resistor. After the supply rises above the threshold, the reset stays asserted for a typical 619 ms timeout period before releasing. That delay gives downstream ICs time to stabilise before the system starts executing code. ## Industrial temperature range and small-footprint package The push-pull output eliminates the external pull-up resistor needed with open-drain supervisors, saving one component per rail. That matters when board space is tight or the BOM count is under cost pressure. ## Parametric contrast with TLV803 family The TLV803EA29VDBZR and TLV803ED29DBZR are simple reset ICs with active-low, open-drain outputs and shorter minimum reset timeouts (130 ms and 33 ms respectively). The TPS3840PH30DBVR differs in three ways that matter for BOM fit: active-high output, push-pull drive, and a fixed 3V threshold with a 619 ms typical timeout. If your design requires an active-low reset or a shorter timeout, the TLV803 family is a functional alternative. But the TPS3840PH30DBVR's push-pull output saves the external pull-up resistor, which the TLV803 parts need.","metaTitle":"TPS3840PH30DBVR Power Supply Monitor, Active High Reset","metaDescription":"Texas Instruments TPS3840PH30DBVR power supply monitor with 3V threshold, active-high push-pull reset, 619 ms timeout, -40°C to 125°C, SOT-23-5.","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 High","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","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/TPS3840PH30DBVR/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout of TPS3840PH30DBVR?","answer":"The reset timeout is 619 ms typical. After the supply rises above the threshold, the reset output stays asserted for this duration before releasing."},{"question":"Is TPS3840PH30DBVR active high reset?","answer":"Yes, the reset output is active-high with a push-pull (totem pole) topology. It drives a logic high during the reset condition."},{"question":"What are equivalent replacements for TPS3840PH30DBVR?","answer":"The TLV803EA29VDBZR and TLV803ED29DBZR are functional alternatives but differ in output type (active-low open-drain vs active-high push-pull) and reset timeout (130 ms / 33 ms minimum vs 619 ms typical). Confirm the reset polarity and timeout match your design before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840PH30DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840PH30DBVR 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}}