{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMK04001BISQE/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMK04001BISQE-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LMK04001BISQE-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LMK04001BISQE%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMK04001BISQE/NOPB Clock Conditioner, PLL, 1.57 GHz max frequency, LVCMOS/LVDS/LVPECL input and output, 48-WFQFN exposed pad, -40°C to 85°C.","salesMarkdown":"## 1.57 GHz clock conditioner — what the PLL buys you The LMK04001BISQE/NOPB is a Texas Instruments clock conditioner with an integrated PLL that cleans up jitter on reference clocks and synthesizes clean output frequencies up to 1.57 GHz. It accepts LVCMOS, LVDS, or LVPECL inputs and can deliver LVCMOS, 2VPECL, or LVPECL outputs, making it a protocol-agnostic bridge between different logic families on a mixed-signal board. The supply range is 3.15 V to 3.45 V, a narrow window that keeps the internal VCO and PLL charge pump well-regulated — plan for a clean 3.3 V rail with <50 mV ripple. ## 2:7 fanout and divider/multiplier flexibility The 2:7 input-to-output ratio lets one reference clock feed up to seven downstream devices while the divider and multiplier stages adjust the frequency. This is useful when a single oscillator must drive multiple FPGAs, SERDES, or ADCs at different clock rates — the PLL locks to the reference and the dividers generate the lower-speed copies. ## 48-WQFN with exposed pad — layout checklist The exposed paddle is the primary thermal path and also serves as the ground return for the PLL — a solid connection here is non-negotiable for jitter performance. No official second-source or pin-compatible cross-reference is listed, so the BOM is single-sourced to this TI part number.","metaTitle":"LMK04001BISQE/NOPB Clock Conditioner, PLL, 1.57 GHz","metaDescription":"Texas Instruments LMK04001BISQE/NOPB clock conditioner with PLL, 1.57 GHz max frequency, LVCMOS/LVDS/LVPECL I/O, 48-WQFN package, -40°C 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); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"48-WFQFN Exposed Pad","Product Status":"Active","Frequency - Max":"1.57GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 3.45V","Divider/Multiplier":"Yes/Yes","Number of Circuits":"1","Base Product Number":"LMK04001","Ratio - Input:Output":"2:7","Operating Temperature":"-40°C~85°C","Supplier Device Package":"48-WQFN (7x7)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$19.2648","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2739492f39a7ccf814dd60aec1ed6a91.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What input and output logic types does the LMK04001BISQE/NOPB support?","answer":"The input accepts LVCMOS, LVDS, or LVPECL signals. The output can be configured as LVCMOS, 2VPECL, or LVPECL. Both the input and output paths support differential signalling."},{"question":"What is the maximum output frequency of the LMK04001BISQE/NOPB?","answer":"The maximum frequency is 1.57 GHz, which covers high-speed serial clocking for 10G Ethernet, PCIe Gen3, and JESD204B interfaces."},{"question":"What package and footprint does the LMK04001BISQE/NOPB use?","answer":"It comes in a 48-WFQFN exposed-pad package with a 7x7 mm body (supplier device package 48-WQFN)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMK04001BISQE-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/LMK04001BISQE-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}}