{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CDCE421RGERG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CDCE421RGERG4","canonicalUrl":"https://icboms.com/texas-instruments/CDCE421RGERG4","factsUrl":"https://icboms.com/api/mcp/products/CDCE421RGERG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments CDCE421RGERG4 clock generator, PLL, 1.2 GHz max, LVDS/LVPECL outputs, 3V-3.6V supply, -40°C to 85°C, 24-VQFN (4x4).","salesMarkdown":"## 1.2 GHz PLL clock generator — what it delivers The Texas Instruments CDCE421RGERG4 is a single-circuit PLL-based clock generator that accepts LVCMOS or crystal inputs and delivers differential LVDS or LVPECL outputs up to 1.2 GHz. The 1:1 input-to-output ratio means it synthesises a clean high-frequency clock from a lower-frequency reference — typical use is generating the serial line rate for gigabit Ethernet, Fibre Channel, or RF local-oscillator chains. ## Obsolete — sourcing reality This part carries an obsolete product status. ## Package and footprint check Housed in a 24-VQFN with exposed pad (4 mm x 4 mm), this is a surface-mount part with a centre thermal pad.","metaTitle":"CDCE421RGERG4 Clock Generator, 1.2 GHz, LVDS/LVPECL","metaDescription":"Texas Instruments CDCE421RGERG4 clock generator with PLL, 1.2 GHz max frequency, LVDS/LVPECL outputs, industrial temp.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Clock & Timing ICs"],"specifications":{"Mfr":"Texas Instruments","PLL":"Yes","Type":"Clock Generator","Input":"LVCMOS, Crystal","Output":"LVDS, LVPECL","Series":"-","Package":"Tape & Reel (TR)","Mounting Type":"Surface Mount","Package / Case":"24-VFQFN Exposed Pad","Product Status":"Obsolete","Frequency - Max":"1.2GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Divider/Multiplier":"Yes/No","Number of Circuits":"1","Base Product Number":"CDCE421","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C~85°C","Supplier Device Package":"24-VQFN (4x4)","Differential - Input:Output":"No/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2ee59c1530c76bd33b309641bc7cb932.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CDCE421RGERG4 obsolete?","answer":"Yes, the product status is listed as obsolete. Texas Instruments no longer manufactures this device. For existing designs, we can source it through independent channels against an RFQ; for new designs, evaluate current TI clock generators with similar PLL and output capabilities."},{"question":"Does CDCE421RGERG4 support LVDS and LVPECL outputs?","answer":"Yes, the output type is listed as both LVDS and LVPECL. The differential outputs can be configured for either standard, which covers the two most common high-speed differential clock interfaces without external level translation."},{"question":"What is the maximum output frequency of CDCE421RGERG4?","answer":"The maximum output frequency is 1.2 GHz, making it suitable for generating high-speed serial clocks in applications such as gigabit Ethernet, Fibre Channel, and RF LO generation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CDCE421RGERG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CDCE421RGERG4 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}}