{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMX2491RTWT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMX2491RTWT","canonicalUrl":"https://icboms.com/texas-instruments/LMX2491RTWT","factsUrl":"https://icboms.com/api/mcp/products/LMX2491RTWT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMX2491RTWT PLL frequency synthesizer, 6.4 GHz max, 3.15-3.45V, 24-WQFN exposed pad, -40 to 125°C, Active.","salesMarkdown":"## 6.4 GHz PLL synthesizer in a 24-WQFN package The LMX2491RTWT is a PLL-based frequency synthesizer that covers a 6.4 GHz maximum output frequency — this places it in the C-band and upper S-band for radar local oscillators, 5G test equipment, and microwave backhaul frequency generation. The 2:1 input-to-output ratio means an internal mux selects between two clock references before feeding the phase detector — useful for redundant reference or switching between a clean crystal and a system clock without an external RF switch. ## Supply rail and board integration A dedicated LDO feeding this rail is the standard practice. The differential input and output are both marked No, so the reference input and RF output are single-ended — the layout must keep the 50-ohm trace from the output pin to the next stage as short as possible to minimize parasitic inductance at 6.4 GHz.","metaTitle":"LMX2491RTWT RF Frequency Synthesizer, 6.4 GHz, PLL","metaDescription":"TI LMX2491RTWT PLL-based frequency synthesizer, 6.4 GHz max, 24-WQFN. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"PLL":"Yes","Type":"Frequency Synthesizer (RF)","Input":"Clock","Output":"Clock","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"24-WFQFN Exposed Pad","Frequency - Max":"6.4GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 3.45V","Divider/Multiplier":"Yes/Yes","Number of Circuits":"1","Ratio - Input:Output":"2:1","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"24-WQFN (4x5)","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.5","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.50000","currency":"USD"},{"qty":10,"price":"$7.67600","currency":"USD"},{"qty":25,"price":"$7.31880","currency":"USD"},{"qty":100,"price":"$6.35470","currency":"USD"},{"qty":250,"price":"$6.06912","currency":"USD"},{"qty":500,"price":"$5.53362","currency":"USD"},{"qty":1250,"price":"$5.05200","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d8fbb57cb43518de660b9a1af57acd64.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output frequency range of LMX2491RTWT?","answer":"The maximum output frequency is 6.4 GHz, covering C-band and upper S-band applications."},{"question":"Is LMX2491RTWT compatible with a 3.3V supply?","answer":"The supply range is 3.15 V to 3.45 V, so a regulated 3.3 V rail within ±2% tolerance is compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMX2491RTWT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMX2491RTWT 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}}