{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840PL31DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840PL31DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840PL31DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3840PL31DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments, Simple Reset/Power-On Reset, TPS3840PL31DBVR, 3.1V threshold, active low push-pull output, 619 ms typical reset timeout, -40°C to 125°C, SOT-23-5, active production.","salesMarkdown":"## Reset supervisor for a 3.1V rail The TPS3840PL31DBVR is a simple reset/power-on reset IC from Texas Instruments that monitors a single 3.1V supply rail and asserts an active-low reset signal when the voltage drops below that threshold. The output is push-pull, totem pole — it drives the reset line high or low without needing an external pull-up resistor, which saves a component on the BOM. With a typical reset timeout of 619 ms, the part holds the system in reset long enough for the supply to stabilise after power-up, covering most MCU and FPGA power-on sequences. ## Threshold and timing for the BOM The 3.1V threshold is set internally — no external resistor divider needed. That simplifies the layout and removes a tolerance stack from the trip point. The 619 ms timeout is a typical value; the datasheet min/max bounds determine the worst-case hold time for the downstream processor. Budget the minimum timeout when calculating the power-good window.","metaTitle":"TPS3840PL31DBVR – Simple Reset/Power-On Reset IC","metaDescription":"Texas Instruments TPS3840PL31DBVR simple reset/power-on reset IC. 3.1V threshold, active low push-pull output, 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":"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":"3.1V","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/TPS3840PL31DBVR/alternatives.json"},"ai":{"faq":[{"question":"Is the TPS3840PL31DBVR available in a push-pull output?","answer":"Yes, the output is push-pull, totem pole — it drives the reset line high or low without an external pull-up resistor."},{"question":"What is the reset timeout period for the TPS3840PL31DBVR?","answer":"The typical reset timeout is 619 ms."},{"question":"Does the TPS3840PL31DBVR have a functional equivalent or replacement?","answer":"The TLV803EA29VDBZR is a similar simple reset IC with an active-low output, but it uses an open-drain output (requires a pull-up) and has a shorter minimum reset timeout of 130 ms. The TPS3840PL31DBVR's push-pull output and 619 ms timeout are distinct differences to evaluate for your design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840PL31DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840PL31DBVR 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}}