{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY29949AC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY29949AC","canonicalUrl":"https://icboms.com/infineon/CY29949AC","factsUrl":"https://icboms.com/api/mcp/products/CY29949AC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY29949AC, Low Skew Clock Driver, Fanout Buffer (Distribution) / Divider / Multiplexer, 200 MHz max, 2:15 I/O, LVCMOS/LVPECL/LVTTL input, LVCMOS/LVTTL output, 52-TQFP, 0°C to 70°C.","salesMarkdown":"## 200 MHz low skew fanout — what it buys the clock tree The Cypress CY29949AC is a low skew clock driver combining fanout buffer, divider, and multiplexer functions in one 52-TQFP package. It accepts LVCMOS, LVPECL, or LVTTL inputs and delivers LVCMOS or LVTTL outputs at frequencies up to 200 MHz, with differential I/O capability throughout. The 2:15 input-to-output ratio lets a single device replace multiple smaller fanout buffers, saving board area and reducing skew accumulation in multi-drop clock trees. Supply voltage operates from either 2.375 V to 2.625 V or 2.97 V to 3.63 V, covering common 2.5 V and 3.3 V logic rails. ## Differential I/O and mixed-signal clock trees Because both input and output paths are rated differential (Yes/Yes per the spec), the CY29949AC can accept a clean LVPECL reference from an oscillator and distribute LVCMOS copies to multiple ASICs or FPGAs without an extra level translator. The integrated divider and multiplexer also allow clock-frequency scaling or source selection on the same die — useful for systems that switch between a primary and redundant clock source. ## RoHS non-compliance — check your market The CY29949AC is listed as RoHS non-compliant. For designs shipping into EU or other RoHS-regulated regions, this part requires an exemption or a leaded-solder process. If your BOM requires RoHS compliance, a lead-free equivalent in the same Cypress clock-driver family would be the appropriate cross-shop. ## Package and temperature grade Housed in a 52-TQFP (10x10 mm) with surface-mount footprint, the part is rated for commercial temperature range (0°C to 70°C). That limits it to indoor, temperature-controlled environments — not suitable for industrial or automotive under-hood use without extended-range qualification.","metaTitle":"CY29949AC Low Skew Clock Driver, 200 MHz, 52-TQFP","metaDescription":"CY29949AC low skew clock driver from Cypress: 200 MHz max, 2:15 fanout, differential I/O, active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Fanout Buffer (Distribution), Divider, Multiplexer","Input":"LVCMOS, LVPECL, LVTTL","Output":"LVCMOS, LVTTL","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"52-TQFP","Frequency - Max":"200 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"2.375V ~ 2.625V, 2.97V ~ 3.63V","Number of Circuits":"1","Ratio - Input:Output":"2:15","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"52-TQFP (10x10)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.49","stockQuantity":0,"priceTiers":[{"qty":121,"price":"$2.49000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/df35c64519e61c17964b81c5296a4833.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum frequency of CY29949AC?","answer":"The device supports a maximum output frequency of 200 MHz across its LVCMOS/LVTTL outputs."},{"question":"What input voltage range does CY29949AC accept?","answer":"The supply voltage range is 2.375 V to 2.625 V (2.5 V rail) or 2.97 V to 3.63 V (3.3 V rail). Input logic levels are LVCMOS, LVPECL, or LVTTL."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY29949AC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY29949AC 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}}