{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMX2571NJKT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMX2571NJKT","canonicalUrl":"https://icboms.com/texas-instruments/LMX2571NJKT","factsUrl":"https://icboms.com/api/mcp/products/LMX2571NJKT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PLLatinum™ LMX2571NJKT RF frequency synthesizer with integrated VCO, PLL with bypass, 1.4 GHz max frequency, 3.15V-3.45V supply, -40°C to 85°C, 36-WFQFN exposed pad.","salesMarkdown":"## RF synthesizer with VCO — what it does and where it fits The Texas Instruments LMX2571NJKT is a PLLatinum™ RF frequency synthesizer with an integrated VCO, designed to generate clock signals up to 1.4 GHz from a crystal or clock input. It includes a PLL with bypass mode, which means the part can operate either as a closed-loop synthesizer or as a direct VCO — useful when you need to switch between locked precision and wideband modulation in the same design. The single-circuit device accepts two clock or crystal inputs and delivers two clock outputs, though the outputs are single-ended (no differential pair). Typical applications include wireless infrastructure, test equipment, and RF signal chains where a clean, programmable local oscillator is needed. The -40°C to 85°C temperature range covers most industrial and telecom enclosures, but not extended automotive or under-hood environments. ## Supply rail tolerance — plan for a clean 3.3 V The supply range is 3.15 V to 3.45 V. ## Package and mounting — 36-WQFN with exposed pad The LMX2571NJKT comes in a 36-lead WFQFN with an exposed pad (6x6 mm body). The exposed pad is the thermal and electrical ground path — it must be soldered to a PCB ground plane with adequate thermal vias. Reflow is the intended assembly method; hand-soldering this package on site is possible with a hot-air station and a fine-tip iron for the perimeter leads, but the pad underneath needs paste or a preform. No lab bench required, but a standard reflow profile is the reliable path. The part is surface-mount only; no through-hole variant exists. ## Lifecycle and sourcing — active, no LTB pressure The LMX2571NJKT carries an Active product status with ROHS3 compliance. If you are qualifying this into a new BOM, there is no imminent obsolescence risk to plan around.","metaTitle":"LMX2571NJKT PLLatinum RF Frequency Synthesizer, 1.4 GHz","metaDescription":"TI LMX2571NJKT PLLatinum RF frequency synthesizer with VCO. Max 1.4 GHz output, 3.15-3.45 V supply, -40 to 85°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"PLLatinum™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"PLL":"Yes with Bypass","Type":"Frequency Synthesizer (RF)","Input":"Clock, Crystal","Output":"Clock","Series":"PLLatinum™","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"36-WFQFN Exposed Pad","Frequency - Max":"1.4GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 3.45V","Divider/Multiplier":"Yes/Yes","Number of Circuits":"1","Ratio - Input:Output":"2:2","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"36-WQFN (6x6)","Differential - Input:Output":"Yes/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.87","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$14.87000","currency":"USD"},{"qty":10,"price":"$13.66400","currency":"USD"},{"qty":25,"price":"$13.09760","currency":"USD"},{"qty":100,"price":"$11.54000","currency":"USD"},{"qty":250,"price":"$10.97360","currency":"USD"},{"qty":500,"price":"$10.26562","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/99b99b6b70ff7f8e8114a17d48b7a4a5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output frequency range of LMX2571NJKT?","answer":"The maximum output frequency is 1.4 GHz. The part synthesizes clock signals from a crystal or clock input up to that ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMX2571NJKT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMX2571NJKT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}