{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMK00334RTVT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMK00334RTVT","canonicalUrl":"https://icboms.com/texas-instruments/LMK00334RTVT","factsUrl":"https://icboms.com/api/mcp/products/LMK00334RTVT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMK00334RTVT clock fanout buffer, 3:5 differential, 400 MHz, 32-WQFN (5x5 mm), PCIe/SATA CPU purpose, -40 to 85°C.","salesMarkdown":"## 3:5 differential fanout buffer, no PLL The LMK00334RTVT is a 3:5 differential fanout buffer from Texas Instruments, designed to distribute reference clocks for PCI Express and SATA CPU interfaces. It accepts a wide range of input standards — CML, HCSL, HSTL, LVDS, LVPECL, SSTL, and crystal — and outputs HCSL or LVCMOS levels. Because it has no internal PLL (PLL: No), this device does not perform jitter cleaning or frequency synthesis. It simply buffers and fans out an incoming clock to multiple destinations, preserving the input's phase noise profile. If your application needs to clean up a noisy reference, you need a PLL-based clock generator upstream. ## 400 MHz ceiling, differential both sides Maximum output frequency is 400 MHz, which covers PCIe Gen1 (100 MHz), Gen2 (100 MHz), Gen3 (100 MHz), and SATA (150 MHz) reference clocks. It does not reach the 500 MHz+ needed for PCIe Gen4 or Gen5 reference clocks. Both the input and output stages are differential (Differential - Input:Output: Yes/Yes), meaning the signal path is balanced end-to-end. This preserves common-mode rejection and keeps radiated EMI low in a dense backplane or add-in card layout. The 3:5 input-to-output ratio (Ratio - Input:Output: 3:5) means any of the three input ports can be selected to drive any combination of the five output banks. This gives routing flexibility — you can distribute one clock to five destinations or switch between three sources without external muxing. ## Tight 3.3 V rail, industrial temp range Supply voltage is 3.15 V to 3.45 V — a tight 3.3 V ±4.5% window. A 3.3 V rail that droops to 3.1 V under load or rings above 3.5 V during hot-swap will violate the operating range. Plan for local decoupling and a clean 3.3 V rail from a low-noise regulator. This suits base-station, datacom, and outdoor networking gear but does not meet automotive AEC-Q100 or extended industrial (-40°C to 105°C) requirements. ## 32-WQFN package — rework and layout notes The exposed pad on the underside must be soldered to a thermal via array on the PCB to pull heat out of the die. Without those vias, the junction temperature rises faster than the ambient rating suggests. Reworking this package is straightforward with hot air — the 5x5 mm body is small enough that a 10 mm nozzle covers it. The trick is preheating the board from underneath so the exposed-pad solder reflows before the perimeter pins. Lift the part, not the pad.","metaTitle":"LMK00334RTVT TI Clock Buffer, 400 MHz, 32-WQFN, Active","metaDescription":"Texas Instruments LMK00334RTVT PCIe/SATA clock fanout buffer, 400 MHz max, 3:5 differential I/O, 32-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":"No","Input":"CML, HCSL, HSTL, LVDS, LVPECL, SSTL, Crystal","Output":"HCSL, LVCMOS","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Main Purpose":"PCI Express (PCIe), SATA CPU","Mounting Type":"Surface Mount","Package / Case":"32-WFQFN Exposed Pad","Product Status":"Active","Frequency - Max":"400MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 3.45V","Number of Circuits":"1","Base Product Number":"LMK00334","Ratio - Input:Output":"3:5","Operating Temperature":"-40°C~85°C","Supplier Device Package":"32-WQFN (5x5)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/663d1e5c23b9687f303c37c67457f958.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LMK00334RTVT/alternatives.json"},"ai":{"faq":[{"question":"Who supplies LMK00334RTVT and how is it quoted for volume purchases?","answer":"Texas Instruments is the manufacturer. The part is sourced through independent and authorized distribution channels."},{"question":"What input standards does the LMK00334RTVT accept?","answer":"It accepts CML, HCSL, HSTL, LVDS, LVPECL, SSTL, and crystal inputs. This covers nearly all common high-speed differential and single-ended clock sources used in PCIe, SATA, and networking designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMK00334RTVT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMK00334RTVT 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}}