{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3851H33EDRBR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3851H33EDRBR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3851H33EDRBR","factsUrl":"https://icboms.com/api/mcp/products/TPS3851H33EDRBR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3851H33EDRBR, Simple Reset/Power-On Reset, 1-channel supervisor, 3.3V threshold, active-low open-drain output, 170ms minimum reset timeout, -40°C to 125°C junction temperature, 8-VDFN exposed pad (8-SON 3x3 mm) package, Tape & Reel.","salesMarkdown":"## What the 170 ms reset timeout buys you The TPS3851H33EDRBR asserts a reset output for at least 170 ms after the monitored 3.3V rail crosses the threshold. That window gives the downstream SoC, FPGA, or DSP time to finish its power-on-reset sequence before the core logic starts executing code. If your processor boots faster than the supply settles, you risk a brown-out or metastable state on the first instruction fetch. ## Active-low open-drain output — wiring flexibility The open-drain output lets you pull the reset line up to any voltage within the device's absolute maximum rating, independent of the monitored rail. That means you can interface a 3.3V supervisor to a 1.8V or 2.5V reset input on the processor without a level shifter. It also allows multiple open-drain supervisors to share a common reset bus through a single pull-up resistor. ## Temperature range and package — where it fits on the board The 8-VDFN package with exposed pad (8-SON 3x3 mm) needs a thermal land pattern on the PCB to pull heat into the ground plane. Without it, the junction temperature rise under continuous operation can exceed the rated limit.","metaTitle":"TPS3851H33EDRBR – TI Simple Reset/Power-On Reset","metaDescription":"Texas Instruments TPS3851H33EDRBR: Simple Reset/Power-On Reset, active-low open-drain output, 3.3V threshold, 170ms min reset timeout, -40°C to 125°C, 8-SON","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":"Open Drain or Open Collector","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"170ms Minimum","Package / Case":"8-VDFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3851","Voltage - Threshold":"3.3V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"8-SON (3x3)","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4100","priceTiers":[{"qty":1,"price":"$1.41000","currency":"USD"},{"qty":10,"price":"$1.26300","currency":"USD"},{"qty":25,"price":"$1.19920","currency":"USD"},{"qty":100,"price":"$0.98500","currency":"USD"},{"qty":250,"price":"$0.92072","currency":"USD"},{"qty":500,"price":"$0.81366","currency":"USD"},{"qty":1000,"price":"$0.64236","currency":"USD"},{"qty":3000,"price":"$0.59954","currency":"USD"},{"qty":6000,"price":"$0.56956","currency":"USD"},{"qty":15000,"price":"$0.54815","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8b12e106fffde0cd8e50687639f4b04b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3851H33EDRBR/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout for TPS3851H33EDRBR?","answer":"The reset timeout is 170 ms minimum. That is the guaranteed time the reset output stays asserted after the monitored voltage rises above the threshold."},{"question":"Is TPS3851H33EDRBR obsolete or still active?","answer":"It is active. Texas Instruments has not announced any end-of-life or last-time-buy for this part."},{"question":"What is the output configuration of TPS3851H33EDRBR?","answer":"The output is active-low, open-drain (open collector). It requires an external pull-up resistor to the desired logic voltage."},{"question":"When sourcing TPS3851H33EDRBR, what is the closest functional second-source?","answer":"The TLV803EA29VDBZR is a close functional peer: it is also a simple reset/power-on reset with active-low open-drain output, but its reset timeout is 130 ms minimum and its threshold is 2.93V. The TLV803ED29DBZR has a 33 ms minimum timeout. Neither is a pin-for-pin replacement — verify the threshold voltage and timeout match your design before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3851H33EDRBR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3851H33EDRBR 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}}