{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMK1D1208RHDT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMK1D1208RHDT","canonicalUrl":"https://icboms.com/texas-instruments/LMK1D1208RHDT","factsUrl":"https://icboms.com/api/mcp/products/LMK1D1208RHDT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMK1D1208RHDT, Clock Buffer, 2:8 fanout, 2 GHz max, LVDS output, 1.71V–3.465V supply, -40°C to 105°C, 28-VFQFN Exposed Pad.","salesMarkdown":"## 2 GHz fanout buffer for high-speed clock trees The LMK1D1208RHDT is a 2:8 differential clock buffer from Texas Instruments, accepting HCSL, LVCMOS, LVDS, or LVPECL inputs and delivering eight LVDS outputs at up to 2 GHz. It operates from any of three supply rails — 1.8V, 2.5V, or 3.3V nominal — so it can drop into existing power domains without a dedicated regulator. The 2 GHz max frequency covers reference clocks for PCIe Gen5 and other high-speed interfaces. The 2:8 ratio means two independent input clocks each fan out to four outputs, or one input fans to all eight if the second input is unused. All input-output paths are fully differential, so the part preserves signal integrity on long PCB traces without extra conditioning. The three supply ranges cover 1.8V, 2.5V, and 3.3V logic families — confirm which rail your system already carries before adding a regulator. ## Package and thermal: the exposed pad is not optional If the board layout omits thermal vias under that pad, the junction temperature rises faster than the datasheet derating curve assumes — especially at 105°C ambient.","metaTitle":"LMK1D1208RHDT Clock Buffer, 2 GHz, LVDS Output, 28-VQFN","metaDescription":"TI LMK1D1208RHDT clock buffer, 2 GHz max, 2:8 fanout, LVDS output, -40 to 105°C. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"Mfr":"Texas Instruments","Type":"Clock Buffer","Input":"HCSL, LVCMOS, LVDS, LVPECL","Output":"LVDS","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"28-VFQFN Exposed Pad","Product Status":"Active","Frequency - Max":"2 GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"1.71V ~ 1.89V, 2.375V ~ 2.625V, 3.135V ~ 3.465V","Number of Circuits":"1","Ratio - Input:Output":"2:8","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"28-VQFN (5x5)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.8900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"How many outputs does LMK1D1208RHDT have?","answer":"The 2:8 ratio provides eight LVDS outputs. Two independent input clocks can each drive four outputs, or one input can drive all eight if the second input is left floating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMK1D1208RHDT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMK1D1208RHDT 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}}