{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3839K50DQNT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3839K50DQNT","canonicalUrl":"https://icboms.com/texas-instruments/TPS3839K50DQNT","factsUrl":"https://icboms.com/api/mcp/products/TPS3839K50DQNT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3839K50DQNT, Simple Reset/Power-On Reset IC, 1-channel supervisor, active-low push-pull output, 4.38V threshold, 120ms minimum reset timeout, -40°C to 85°C, 4-X2SON (1x1) package.","salesMarkdown":"## Supervisor for a 5V rail — threshold and timeout The TPS3839K50DQNT is a single-channel voltage supervisor that asserts a reset output when the monitored supply drops below 4.38V. That threshold is a good fit for a nominal 5V rail — it gives roughly 12% undervoltage margin before the reset fires, which keeps the downstream processor out of brownout territory. The reset timeout is a minimum of 120ms, long enough for most MCU and SoC power-on-reset sequences to complete before the part de-asserts. ## Temperature grade and package constraints","metaTitle":"TPS3839K50DQNT – Texas Instruments Simple Reset/Power-On","metaDescription":"TPS3839K50DQNT active Simple Reset/Power-On Reset IC with 4.38V threshold, 120ms min timeout, push-pull output, -40°C to 85°C, 4-X2SON package. Sourced per RFQ.","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":"120ms Minimum","Package / Case":"4-XDFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3839","Voltage - Threshold":"4.38V","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"4-X2SON (1x1)","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1900","priceTiers":[{"qty":1,"price":"$1.19000","currency":"USD"},{"qty":10,"price":"$1.06400","currency":"USD"},{"qty":25,"price":"$1.01040","currency":"USD"},{"qty":100,"price":"$0.82990","currency":"USD"},{"qty":250,"price":"$0.77576","currency":"USD"},{"qty":500,"price":"$0.68554","currency":"USD"},{"qty":1250,"price":"$0.54122","currency":"USD"},{"qty":2500,"price":"$0.51058","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8db2a3e3b3bb51ea8ca211210c7cfea5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3839K50DQNT/alternatives.json"},"ai":{"faq":[{"question":"Is TPS3839K50DQNT active low or active high?","answer":"The reset output is active low — it goes low when the supply drops below the threshold and remains low through the 120ms minimum timeout after recovery."},{"question":"Can TPS3839K50DQNT work with a 3.3V supply?","answer":"No. The threshold is 4.38V, which is designed for a nominal 5V rail. For a 3.3V rail, consider a variant with a lower threshold such as the TPS3839K33DQNT."},{"question":"What is the difference between TPS3839K50DQNT and TPS3839K33DQNT?","answer":"The two parts differ only in the reset threshold voltage: the K50 variant trips at 4.38V (for 5V rails), while the K33 variant trips at a lower voltage suitable for 3.3V rails. All other specs — package, timeout, output type, temperature range — are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3839K50DQNT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3839K50DQNT 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}}