{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMK04131SQX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMK04131SQX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LMK04131SQX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LMK04131SQX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PLLatinum™ series, PLL clock jitter cleaner, LMK04131SQX/NOPB, 1.08 GHz max, 2:6 fanout, LVCMOS/LVDS/LVPECL I/O, 48-WQFN exposed pad, -40°C to 85°C.","salesMarkdown":"## What the 1.08 GHz PLL buys you in a clock tree The LMK04131SQX/NOPB is a single-circuit PLL clock conditioner from TI's PLLatinum family, rated to 1.08 GHz maximum frequency. That ceiling covers most RF and high-speed serial datapath clocks — 10G Ethernet reference, FPGA transceiver lanes, ADC/DAC sampling clocks — without needing a separate frequency multiplier stage upstream. The 2:6 input-to-output fanout ratio means it accepts two reference inputs (LVCMOS, LVDS, or LVPECL) and distributes six cleaned-up clock outputs in the same differential or single-ended formats. On a mixed-signal board, that saves a separate fanout buffer and keeps the jitter budget tight across all loads. ## Package and rework reality Housed in a 48-lead WFQFN with exposed pad (7x7 mm WQFN), the part sits on a thermal land that must be soldered to a PCB copper plane for both heat sinking and ground return. Reworking this package under hot air is straightforward if the board has a bottom-side preheat zone. The 0.5 mm pitch QFN leads are visible at the edges for inspection, and the centre pad wets through a solder paste stencil opening about 50% of the pad area — too much paste and the part floats, too little and the thermal connection opens under temperature cycling. ## Active production — no LTB pressure Supply voltage is a tight 3.15 V to 3.45 V rail — not a wide-range 3.3 V part. The board's 3.3 V rail must stay within that window under load; a switching regulator with 2% set-point accuracy and 50 mV ripple keeps the PLL's internal VCO from pulling frequency on the supply noise.","metaTitle":"TI LMK04131SQX/NOPB PLLatinum Clock IC, 1.08 GHz","metaDescription":"Texas Instruments LMK04131SQX/NOPB PLLatinum clock IC, 1.08 GHz max, 2:6 fanout, LVCMOS/LVDS/LVPECL I/O, 48-WQFN. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"Mfr":"Texas Instruments","PLL":"Yes","Input":"LVCMOS, LVDS, LVPECL","Output":"LVCMOS, LVDS, 2VPECL, LVPECL","Series":"PLLatinum™","Package":"Tape & Reel (TR)","Mounting Type":"Surface Mount","Package / Case":"48-WFQFN Exposed Pad","Product Status":"Active","Frequency - Max":"1.08GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 3.45V","Divider/Multiplier":"Yes/No","Number of Circuits":"1","Base Product Number":"LMK04131","Ratio - Input:Output":"2:6","Operating Temperature":"-40°C~85°C","Supplier Device Package":"48-WQFN (7x7)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.9200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/aec93e0b8f1bb03c48d16d6fe0fc53f3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LMK04131SQX%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What input and output signal types does the LMK04131SQX/NOPB support?","answer":"It accepts LVCMOS, LVDS, and LVPECL reference inputs and outputs LVCMOS, LVDS, 2VPECL, and LVPECL. Both the input and output paths are differential-capable, so it can clean up a noisy differential reference and distribute it to six loads in the same or a different differential standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMK04131SQX-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMK04131SQX-NOPB 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}}