{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3899DL08DSER","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3899DL08DSER","canonicalUrl":"https://icboms.com/texas-instruments/TPS3899DL08DSER","factsUrl":"https://icboms.com/api/mcp/products/TPS3899DL08DSER","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3899DL08DSER, Simple Reset/Power-On Reset, Active Low, Open Drain or Open Collector, 0.8V threshold, 40µs typical reset timeout, -40°C to 125°C, 6-WFDFN / 6-WSON (1.5x1.5), Surface Mount, Tape & Reel","salesMarkdown":"## 0.8V threshold supervisor for low-voltage rails The TPS3899DL08DSER is a nanopower supervisor from Texas Instruments that monitors a single voltage rail with a 0.8V threshold. That 0.8V trip point is designed for modern low-voltage cores — think 0.9V or 1.0V supplies where a standard 1.6V or 2.9V reset IC would never trigger. The active-low, open-drain output lets you wire-OR the reset signal with other supervisors or a manual reset button on the same pull-up line. The reset timeout is 40µs typical — short enough that a power-on glitch on a clean rail won't cause a false reset, but long enough to hold the processor in reset through the supply ramp. The operating temperature range spans -40°C to 125°C, so it can sit on an engine-control board or an outdoor radio without a temperature grade downgrade. ## Package and footprint: 6-WSON 1.5x1.5 The part comes in a 6-WSON package measuring 1.5 mm by 1.5 mm (supplier device package 6-WSON). That's a small land pattern — the exposed pad underneath is the thermal and electrical ground connection. For the PCB layout engineer: the pad needs a via array to the ground plane to keep the junction temperature down when the part is dissipating the open-drain pull-up current at high ambient. The 0.50 mm pitch on the outer leads is fine for a two-layer board if the ground pour is generous. ## Lifecycle: active, no EOL watch needed No last-time-buy clock is running. The base product number is TPS3899, so future threshold variants in the same family share the same datasheet and pinout — a useful hedge if the rail voltage changes in a board revision. ## Sourcing: quoted to order per RFQ The TPS3899DL08DSER is supplied by Texas Instruments and sourced through our distribution channel.","metaTitle":"TPS3899DL08DSER – 0.8V Threshold, 40µs Reset, Active Low","metaDescription":"Texas Instruments TPS3899DL08DSER nanopower supervisor with 0.8V threshold, 40µs typical reset timeout, active-low open-drain output.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","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":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"40µs Typical","Package / Case":"6-WFDFN","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3899","Voltage - Threshold":"0.8V","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"6-WSON (1.5x1.5)","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5400","priceTiers":[{"qty":1,"price":"$1.54000","currency":"USD"},{"qty":10,"price":"$1.37700","currency":"USD"},{"qty":25,"price":"$1.30640","currency":"USD"},{"qty":100,"price":"$1.07320","currency":"USD"},{"qty":250,"price":"$1.00324","currency":"USD"},{"qty":500,"price":"$0.88658","currency":"USD"},{"qty":1000,"price":"$0.69993","currency":"USD"},{"qty":3000,"price":"$0.56277","currency":"USD"},{"qty":6000,"price":"$0.53463","currency":"USD"},{"qty":15000,"price":"$0.51453","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/143ba4cb91734066d9aa8f8a636c6889.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3899DL08DSER/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout of the TPS3899DL08DSER?","answer":"The reset timeout is 40µs typical. After the monitored voltage rises above the threshold, the output stays low for this period before releasing, giving the supply rail time to settle."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3899DL08DSER","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3899DL08DSER 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}}