{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840DL32DBVRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840DL32DBVRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840DL32DBVRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS3840DL32DBVRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840DL32DBVRQ1, Simple Reset/Power-On Reset, Automotive grade, 3.2V threshold, 619ms typical reset timeout, open-drain active-low output, SOT-23-5 package, -40°C to 125°C junction temperature.","salesMarkdown":"## 3.2V threshold supervisor for automotive supply rails The TPS3840DL32DBVRQ1 is a Texas Instruments Simple Reset/Power-On Reset IC designed to monitor a single 3.2V supply rail. The 3.2V threshold is the voltage at which the device asserts a reset — it keeps the downstream MCU or SoC in reset until the monitored rail stabilises above that level plus the hysteresis band. The reset timeout is 619ms typical. If the rail dips below 3.2V again during that window, the timeout retriggers. The output is open-drain, active-low. Open-drain means the reset signal can be pulled up to any voltage within the absolute maximum rating of the pin — useful when the supervisor runs on a different rail than the monitored processor. ## AEC-Q100 and 125°C junction — designed for under-hood The SOT-23-5 package is a 5-lead SC-74A footprint. The 0.95 mm lead pitch is forgiving for layout — no micro-vias needed. No PCN or EOL notice has been issued for this base product number. The part is ROHS3 compliant. The SOT-23-5 package is widely stocked across multiple distributor channels.","metaTitle":"TPS3840DL32DBVRQ1 – TI Automotive Supervisor, 3.2V Threshold","metaDescription":"Texas Instruments TPS3840DL32DBVRQ1 – Simple Reset/Power-On Reset, AEC-Q100 qualified, 3.2V threshold, 619ms timeout, open-drain output, 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","Grade":"Automotive","Reset":"Active Low","Output":"Open Drain or Open Collector","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Mounting Type":"Surface Mount","Qualification":"AEC-Q100","Reset Timeout":"619ms Typical","Package / Case":"SC-74A, SOT-753","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3840","Voltage - Threshold":"3.2V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1400","priceTiers":[{"qty":1,"price":"$1.14000","currency":"USD"},{"qty":10,"price":"$1.01600","currency":"USD"},{"qty":25,"price":"$0.96440","currency":"USD"},{"qty":100,"price":"$0.79210","currency":"USD"},{"qty":250,"price":"$0.74048","currency":"USD"},{"qty":500,"price":"$0.65438","currency":"USD"},{"qty":1000,"price":"$0.51662","currency":"USD"},{"qty":3000,"price":"$0.43410","currency":"USD"},{"qty":6000,"price":"$0.41239","currency":"USD"},{"qty":15000,"price":"$0.39689","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/38b6907610defeba97afc045ec167792.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3840DL32DBVRQ1/alternatives.json"},"ai":{"faq":[{"question":"Does TPS3840DL32DBVRQ1 have an open drain output?","answer":"Yes, the output is open drain or open collector and is active-low. This allows the reset signal to be pulled up to a different voltage level."},{"question":"What is the closest functional second-source to TPS3840DL32DBVRQ1?","answer":"The TLV803EA29VDBZR and TLV803ED29DBZR are similar simple reset ICs with open-drain active-low outputs and AEC-Q100 qualification, but their threshold voltages differ (2.93V for the TLV803EA29VDBZR) and reset timeouts are shorter (130ms minimum for the TLV803EA29VDBZR, 33ms minimum for the TLV803ED29DBZR). Verify the threshold 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/TPS3840DL32DBVRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840DL32DBVRQ1 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}}