{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMK04000BISQ/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMK04000BISQ-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LMK04000BISQ-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LMK04000BISQ%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMK04000BISQ/NOPB, Clock Conditioner, PLL Yes, 1.296 GHz max frequency, 3.15V~3.45V supply, LVCMOS/LVDS/LVPECL input/output, -40°C~85°C, 48-WFQFN exposed pad.","salesMarkdown":"## 1.296 GHz PLL clock conditioner — what it does for the signal chain The Texas Instruments LMK04000BISQ/NOPB is a PLL-based clock conditioner that accepts LVCMOS, LVDS, or LVPECL inputs and delivers cleaned-up LVCMOS, 2VPECL, or LVPECL outputs up to 1.296 GHz. It integrates a phase-locked loop with a voltage-controlled oscillator to reduce jitter on a reference clock, making it a fit for high-speed ADC/DAC clocking, FPGA reference distribution, and base-station timing where phase noise matters. ## 3:7 input-to-output ratio and differential routing Three inputs can be selected and fanned out to seven outputs — the 3:7 ratio lets the part serve as a clock mux and fanout buffer in one device, reducing board space versus a separate PLL and clock buffer. Both the input and output paths support differential signalling (LVDS, LVPECL), which is the standard for keeping clock integrity over longer PCB traces in noisy environments like telecom backplanes. The supply range is 3.15 V to 3.45 V — a tight window that demands a clean 3.3 V rail with low ripple; a linear regulator feeding this part is common practice. The NOPB suffix indicates a lead-free (no Pb) finish, which is the current standard and does not affect solder profile compatibility with standard SAC305 reflow.","metaTitle":"Texas Instruments LMK04000BISQ/NOPB Clock Conditioner","metaDescription":"Active PLL clock conditioner from TI. 1.296 GHz max output, LVCMOS/LVDS/LVPECL I/O, 3.15-3.45 V supply, -40 to 85 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"Mfr":"Texas Instruments","PLL":"Yes","Type":"Clock Conditioner","Input":"LVCMOS, LVDS, LVPECL","Output":"LVCMOS, 2VPECL, LVPECL","Series":"-","Package":"Tape & Reel (TR)","Mounting Type":"Surface Mount","Package / Case":"48-WFQFN Exposed Pad","Product Status":"Active","Frequency - Max":"1.296GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 3.45V","Divider/Multiplier":"Yes/Yes","Number of Circuits":"1","Base Product Number":"LMK04000","Ratio - Input:Output":"3:7","Operating Temperature":"-40°C~85°C","Supplier Device Package":"48-WQFN (7x7)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$19.5915","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2739492f39a7ccf814dd60aec1ed6a91.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum output frequency of LMK04000BISQ/NOPB?","answer":"The maximum output frequency is 1.296 GHz, which covers most high-speed clocking needs for ADCs, DACs, and FPGAs operating in the L-band or below."},{"question":"Can LMK04000BISQ/NOPB replace LMK04000BISQ (no NOPB suffix)?","answer":"The NOPB suffix indicates a lead-free (RoHS-compliant) finish. The base product number LMK04000 is the same, so the two are functionally identical. The NOPB variant is the current production standard."},{"question":"Is LMK04000BISQ/NOPB compatible with LVCMOS inputs?","answer":"Yes, LVCMOS is one of the accepted input types alongside LVDS and LVPECL. The outputs can also be configured for LVCMOS levels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMK04000BISQ-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/LMK04000BISQ-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}}