{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840PL48DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840PL48DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840PL48DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3840PL48DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840PL48DBVR, Simple Reset/Power-On Reset supervisor, 1-channel, active-low push-pull output, 4.8V threshold, 619ms typical timeout, SOT-23-5 package, -40°C to 125°C junction temperature.","salesMarkdown":"## What the 4.8V threshold tells you about your rail The TPS3840PL48DBVR is a single-channel voltage supervisor that asserts a reset when the monitored supply drops below 4.8V. That threshold is purpose-built for 5V nominal rails — it triggers before the supply decays enough to cause logic errors, then holds reset for 619ms typical after the rail recovers. If your processor or FPGA needs a clean power-up sequence with a known delay, that timeout window gives the core time to stabilize before the reset pin releases. ## Push-pull output saves a pull-up resistor The output is push-pull, totem pole, so it drives high and low without an external pull-up resistor. That simplifies the BOM and saves one component per supervisor channel. The reset is active low — the pin goes low when the supply drops below threshold and stays low through the timeout period. The tape-and-reel option is feeder-ready for high-volume assembly. That means you can commit this part to a production BOM without worrying about a sudden last-time-buy window. Sourced per RFQ against your line-item quantity.","metaTitle":"TPS3840PL48DBVR – TI Simple Reset/Power-On Reset","metaDescription":"Texas Instruments TPS3840PL48DBVR supervisor IC: 4.8V threshold, push-pull output, 619ms timeout, -40°C to 125°C, SOT-23-5. Active production, ROHS3 compliant.","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","Base Product Number":"TPS3840","Voltage - Threshold":"4.8V","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0100","priceTiers":[{"qty":1,"price":"$1.01000","currency":"USD"},{"qty":10,"price":"$0.90400","currency":"USD"},{"qty":25,"price":"$0.85760","currency":"USD"},{"qty":100,"price":"$0.70460","currency":"USD"},{"qty":250,"price":"$0.65864","currency":"USD"},{"qty":500,"price":"$0.58204","currency":"USD"},{"qty":1000,"price":"$0.45951","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/TPS3840PL48DBVR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to TPS3840PL48DBVR?","answer":"The TLV803EA29VDBZR is a similar simple reset supervisor with active-low, open-drain output and a 130ms minimum timeout. Its threshold is 2.9V, not 4.8V, so it monitors a different rail. The TPS3840PL48DBVR's push-pull output and 4.8V threshold make it a direct fit only for 5V systems — the TLV803 family would need a threshold adjustment or a different rail assignment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840PL48DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840PL48DBVR 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}}