{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMK05028RGCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMK05028RGCT","canonicalUrl":"https://icboms.com/texas-instruments/LMK05028RGCT","factsUrl":"https://icboms.com/api/mcp/products/LMK05028RGCT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMK05028RGCT dual DPLL clock synchronizer, 4:8 input:output, supports CML/HCSL/LVDS/LVPECL I/O, 200MHz/750MHz max frequency, 1.71V–3.465V supply, -40°C to 85°C, 64-VQFN (9x9) package.","salesMarkdown":"## Dual DPLL clock synchronizer for precision timing It accepts four differential or single-ended inputs (CML, HCSL, LVDS, LVPECL) and provides eight outputs in the same formats plus LVCMOS, covering both baseband and high-speed SerDes reference clocking in a single device. The dual DPLL architecture supports hitless reference switching and holdover, making it a fit for telecom base stations, networking switches, and industrial equipment that require ITU-T G.8262 / G.8123 compliant jitter generation. ## Dual frequency ceiling: 200 MHz and 750 MHz The part specifies two maximum output frequencies: 200 MHz and 750 MHz. The 200 MHz ceiling covers common Ethernet and FPGA fabric clocks; the 750 MHz path handles high-speed SerDes reference clocks (e.g., 10G/25G PCS) without an external PLL. With a 4:8 input-to-output ratio, the device can fan out multiple independent clock domains from a single oscillator, reducing the number of discrete clock ICs on the board. ## Supply rail flexibility and package Housed in a 64-VFQFN with exposed pad (9x9 mm body), the package provides a low-inductance thermal path for the dual DPLL's power dissipation.","metaTitle":"TI LMK05028RGCT Clock Synchronizer, Dual DPLL, 750MHz Max","metaDescription":"Texas Instruments LMK05028RGCT dual DPLL clock synchronizer with 4:8 input:output ratio, supports CML/HCSL/LVDS/LVPECL outputs, 200MHz/750MHz max, -40°C to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"Mfr":"Texas Instruments","PLL":"Yes","Type":"Clock Synchronizer","Input":"CML, HCSL, LVDS, LVPECL","Output":"CML, HCSL, LVCMOS, LVDS, LVPECL","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"64-VFQFN Exposed Pad","Product Status":"Active","Frequency - Max":"200MHz, 750MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"1.71V ~ 1.89V, 2.375V ~ 2.625V, 3.135V ~ 3.465V","Divider/Multiplier":"Yes/Yes","Number of Circuits":"2","Base Product Number":"LMK05028","Ratio - Input:Output":"4:8","Operating Temperature":"-40°C~85°C","Supplier Device Package":"64-VQFN (9x9)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$34.7000","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$34.70000","currency":"USD"},{"qty":10,"price":"$32.00000","currency":"USD"},{"qty":25,"price":"$30.56200","currency":"USD"},{"qty":100,"price":"$27.32600","currency":"USD"},{"qty":250,"price":"$26.06752","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/413e4f18e96ee9564f080ccbdd45d4b1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What output types does LMK05028RGCT support?","answer":"The device outputs CML, HCSL, LVCMOS, LVDS, and LVPECL formats. This range covers both differential high-speed SerDes clocks and single-ended logic-level clocks without external level translators."},{"question":"What is the maximum frequency of LMK05028RGCT?","answer":"Two maximum frequencies are specified: 200 MHz for baseband/FPGA fabric clocks and 750 MHz for high-speed SerDes reference clocks."},{"question":"What are the recommended alternatives to LMK05028RGCT?","answer":"The CD74HCT7046AE is a single PLL with 1:2 input:output ratio and 38 MHz maximum frequency, operating from 4.5 V supply in a through-hole package. It is not a functional replacement for the LMK05028RGCT's dual DPLL, 750 MHz output, or differential signaling capability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMK05028RGCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMK05028RGCT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}