{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3839E16DQNR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3839E16DQNR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3839E16DQNR","factsUrl":"https://icboms.com/api/mcp/products/TPS3839E16DQNR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3839E16DQNR, Simple Reset/Power-On Reset, Active Low, Push-Pull/Totem Pole Output, 1.52 V Threshold, 120 ms Minimum Reset Timeout, -40°C~85°C, X2SON-4 (1x1 mm) Package.","salesMarkdown":"## 1.52 V threshold supervisor for tight low-voltage rails The TPS3839E16DQNR is a single-channel voltage supervisor from TI that holds a processor in reset until the monitored supply crosses 1.52 V and stays there for at least 120 ms. It targets 1.8 V nominal rails — common in low-power MCUs, FPGAs, and DSP cores — where a clean power-on sequence is critical to avoid latch-up or undefined boot states. The 1.52 V threshold sits about 84 % of a nominal 1.8 V rail. With a ±5 % supply tolerance the rail bottoms at 1.71 V, so this part doesn't nuisance-trip on normal ripple. It catches genuine brownouts below 1.52 V — the sort of sag you see when a peripheral powers up and drags the core rail down. For a 16 MHz MCU that's about 1.9 million clock cycles of guaranteed hold-off. ## X2SON-4: tiny footprint, tight layout rules The 1x1 mm X2SON package (supplier device package 4-X2SON) is roughly the area of an 0402 resistor. A fine-pitch stencil (0.1 mm thick or less) and a reflow profile matched to the small thermal mass are needed to avoid tombstoning or insufficient solder joint height. The package is rated for surface-mount assembly only. TI lists the TPS3839E16DQNR as Active. The base product number TPS3839 covers multiple threshold options (1.52 V, 1.8 V, 2.5 V, etc.) sharing the same package and pinout, so if the 1.52 V variant ever phases out, a threshold-adjacent sibling is a plausible drop-in — but no official successor has been declared. For now, this part is fully in production and sourced through standard distribution.","metaTitle":"TI TPS3839E16DQNR Simple Reset IC, 1.52 V Threshold","metaDescription":"Texas Instruments TPS3839E16DQNR simple reset/power-on reset IC. 1.52 V threshold, active-low push-pull output, 120 ms min timeout. X2SON-4 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"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":"1.52V","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"4-X2SON (1x1)","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3381","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8db2a3e3b3bb51ea8ca211210c7cfea5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3839E16DQNR/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout for TPS3839E16DQNR?","answer":"The reset timeout is 120 ms minimum. After the monitored voltage rises above the 1.52 V threshold, the part holds the reset output active-low for at least 120 ms before releasing it. This delay allows the system power supply and oscillator to stabilise before the processor starts executing code."},{"question":"Can TPS3839E16DQNR be used with a 1.8 V supply?","answer":"Yes. The 1.52 V threshold is designed for monitoring a nominal 1.8 V rail. With a ±5 % tolerance the rail stays above 1.71 V, well clear of the threshold. The part will assert reset when the rail drops below 1.52 V — a genuine brownout condition — and release it after the 120 ms timeout once the rail recovers."},{"question":"Is TPS3839E16DQNR equivalent to TPS3839E18DQNR?","answer":"They are the same base product family (TPS3839) with the same package, pinout, and reset timeout. The only difference is the voltage threshold: the E16 variant monitors 1.52 V, while the E18 variant monitors a higher threshold. They are not drop-in equivalents — choose the variant that matches your supply rail voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3839E16DQNR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3839E16DQNR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}