{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840DL18DBVRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840DL18DBVRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840DL18DBVRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS3840DL18DBVRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840DL18DBVRQ1, Automotive AEC-Q100 Simple Reset/Power-On Reset, monitors a single 1.8V rail with Active Low Open Drain output, 619ms typical reset timeout, in SOT-23-5 package.","salesMarkdown":"The TPS3840DL18DBVRQ1 is a Texas Instruments Simple Reset/Power-On Reset IC that monitors a single 1.8V supply rail. It asserts a reset signal (Active Low, Open Drain output) when the monitored voltage drops below the 1.8V threshold, and holds the reset for a typical 619ms timeout after the rail recovers. ## Parametric fit: threshold, timeout, and temperature range The 1.8V threshold is fixed and targets low-voltage core or I/O rails common in modern MCUs and SoCs. The 619ms typical reset timeout provides a long enough hold-off for the supply to stabilise after a brown-out or power-up event, reducing the chance of the system attempting to run before the rail is within tolerance. The open-drain output allows the reset signal to be wire-ORed with other supervisors or pulled up to a different voltage level, giving flexibility in mixed-voltage systems. The SOT-23-5 package keeps the footprint small, suitable for space-constrained ECU or sensor module PCBs. It is ROHS3 compliant.","metaTitle":"TPS3840DL18DBVRQ1 – TI Automotive Simple Reset/Power-On","metaDescription":"Texas Instruments TPS3840DL18DBVRQ1: Simple Reset/Power-On Reset, Active Low, Open Drain, 1.8V threshold, 619ms timeout, -40°C to 125°C, AEC-Q100, SOT-23-5.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","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":"Open Drain or Open Collector","Series":"Automotive, AEC-Q100","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":"1.8V","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1900","priceTiers":[{"qty":1,"price":"$1.19000","currency":"USD"},{"qty":10,"price":"$1.06600","currency":"USD"},{"qty":25,"price":"$1.01200","currency":"USD"},{"qty":100,"price":"$0.83140","currency":"USD"},{"qty":250,"price":"$0.77712","currency":"USD"},{"qty":500,"price":"$0.68678","currency":"USD"},{"qty":1000,"price":"$0.54219","currency":"USD"},{"qty":3000,"price":"$0.51150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/38b6907610defeba97afc045ec167792.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3840DL18DBVRQ1/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840DL18DBVRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840DL18DBVRQ1 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}}