{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY223811FXI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY223811FXI","canonicalUrl":"https://icboms.com/infineon/CY223811FXI","factsUrl":"https://icboms.com/api/mcp/products/CY223811FXI","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY223811FXI, Clock Generator / Fanout Distribution, PLL Yes with Bypass, 1:3 ratio, LVTTL/Crystal input, CMOS output, 166 MHz max, 8-SOIC, -40°C to 85°C, 3.135V–3.465V supply.","salesMarkdown":"The Cypress CY223811FXI is a single-circuit clock generator with integrated PLL and bypass mode, packing a 1:3 fanout from a single LVTTL or crystal input into three CMOS outputs, each capable of up to 166 MHz. The PLL can be bypassed entirely, letting the input clock pass through unmodified — useful when you need a clean reference path during system bring-up or for jitter-sensitive sections of the clock tree. ## PLL with bypass — when you use which path The PLL can be switched on for frequency synthesis or multiplication, or bypassed to feed the input clock straight to the outputs. Bypass mode is the fallback if the PLL lock fails or during a low-jitter reference pass-through. The divider/multiplier block is present (divider only — no multiplier), so the output frequency is always a divided-down version of the PLL output or the bypassed input. If your board has a 3.3 V rail that droops below 3.135 V under load, this clock generator will drop out of spec. ## Package and mounting — 8-SOIC, no surprises The supplier device package is 8-SOIC; the shipping medium is tube. ## Lifecycle and compliance The part is current-production from Cypress (now Infineon). ROHS3 means the three restricted substances (lead, mercury, cadmium) are all below the threshold; no exemption declarations needed on your CE or UKCA declaration.","metaTitle":"CY223811FXI Clock Generator, PLL with Bypass, 166 MHz","metaDescription":"Cypress CY223811FXI clock generator with PLL bypass, 166 MHz max, 1:3 fanout, LVTTL/crystal input, CMOS output, -40°C to 85°C, 8-SOIC. ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"PLL":"Yes with Bypass","Type":"Clock Generator, Fanout Distribution","Input":"LVTTL, Crystal","Output":"CMOS","Package":"Tube","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Frequency - Max":"166MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.135V ~ 3.465V","Divider/Multiplier":"Yes/No","Number of Circuits":"1","Ratio - Input:Output":"1:3","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-SOIC","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.29","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.29000","currency":"USD"},{"qty":10,"price":"$10.37800","currency":"USD"},{"qty":25,"price":"$9.94800","currency":"USD"},{"qty":100,"price":"$8.76490","currency":"USD"},{"qty":250,"price":"$8.33472","currency":"USD"},{"qty":500,"price":"$7.79700","currency":"USD"},{"qty":1000,"price":"$7.15173","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/70d3575e84ea1c4d484f245a001243c2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does CY223811FXI have a PLL?","answer":"Yes — the PLL is present with a bypass option. You can run the PLL for frequency synthesis or bypass it to pass the input clock straight through to the outputs."},{"question":"Is CY223811FXI RoHS compliant?","answer":"Yes — it is ROHS3 compliant, meaning all three restricted substances (lead, mercury, cadmium) are below the threshold. No RoHS exemption declarations are needed."},{"question":"What is the difference between CY223811FXI and CY223811FXC?","answer":"The industrial-grade part is the safer choice for any environment that may see freezing or high heat."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY223811FXI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY223811FXI 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}}