{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3306-20D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3306-20D","canonicalUrl":"https://icboms.com/texas-instruments/TPS3306-20D","factsUrl":"https://icboms.com/api/mcp/products/TPS3306-20D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3306-20D multi-voltage supervisor, monitors two voltages at 1.85V and 2.92V, active-low open-drain reset, 70ms minimum reset timeout, -40°C to 85°C, SOIC-8 surface mount.","salesMarkdown":"## Dual-voltage supervisor for two-rail systems It is designed for systems that need a single IC to sequence and protect a dual-voltage power domain — typical in DSPs, FPGAs, and mixed-signal boards where a 1.8V core and a 2.9V/3.3V I/O rail coexist. The two monitored thresholds are 1.85V and 2.92V. The 1.85V threshold is sized for a nominal 1.8V core supply with about 50 mV of guardband below the regulated level; a dip below 1.85V triggers a reset. The 2.92V threshold covers a nominal 3.0V or 3.3V rail — it trips before the rail drops far enough to cause logic corruption. The reset output is open-drain, active low, so multiple supervisors can wire-OR their outputs to a shared reset line without contention. ## Reset timing — 70 ms minimum timeout Once all monitored voltages rise above their thresholds, the TPS3306-20D holds the reset output low for a minimum of 70 ms before releasing it. This timeout gives the system power supplies and oscillators time to stabilise before the processor or FPGA starts executing code. The 70 ms figure is a minimum — the actual timeout will be longer at lower temperatures or with supply tolerances, so the system should be designed to tolerate at least that window. The 8-SOIC footprint is common and well-supported by PCB design libraries.","metaTitle":"TPS3306-20D Multi-Voltage Supervisor, Thresholds 1.85V/2.92V","metaDescription":"Texas Instruments TPS3306-20D multi-voltage supervisor monitors two rails at 1.85V and 2.92V. Active-low open-drain reset, 70ms min timeout, SOIC-8.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Type":"Multi-Voltage Supervisor","Reset":"Active Low","Output":"Open Drain or Open Collector","Series":"-","Package":"Tube","Mounting Type":"Surface Mount","Reset Timeout":"70ms Minimum","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3306","Voltage - Threshold":"1.85V, 2.92V","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"8-SOIC","Number of Voltages Monitored":"2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9747","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3306-20D/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout of TPS3306-20D?","answer":"The reset timeout is 70 ms minimum — after all monitored voltages rise above threshold, the reset output stays low for at least 70 ms before releasing."},{"question":"Can TPS3306-20D replace TPS3306-18D?","answer":"TPS3306-20D and TPS3306-18D are both in the TPS3306 family and share the same pinout and package, but their threshold voltages differ. The -20D monitors 1.85V and 2.92V; the -18D monitors different thresholds. They are not drop-in replacements unless the system supply voltages match the new thresholds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3306-20D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3306-20D 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}}