{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4251V-15AC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4251V-15AC","canonicalUrl":"https://icboms.com/infineon/CY7C4251V-15AC","factsUrl":"https://icboms.com/api/mcp/products/CY7C4251V-15AC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C series synchronous FIFO memory, CY7C4251V-15AC, 72K (8K x 9) memory size, 66.7 MHz data rate, 11 ns access time, 3 V to 3.6 V supply, 0°C to 70°C, 32-TQFP (7x7) package.","salesMarkdown":"## Synchronous FIFO — 72K depth at 66.7 MHz The CY7C4251V-15AC is a 72 Kbit (8 K x 9) synchronous FIFO from the CY7C series, clocked at 66.7 MHz with an 11 ns access time. The 9-bit width (8 data bits plus one parity/control bit) suits applications needing a sideband flag alongside the data word — typical in telecom line cards, industrial data buffers, and video frame stores where a 9-bit bus aligns with byte-plus-parity architectures. Sourcing is via independent surplus and broker channels, with quantities and date codes confirmed at RFQ. For designs still using this footprint, the 32-TQFP (7x7 mm) package and 3.3 V supply rail are common across the CY7C synchronous FIFO family, but pin-compatibility with any specific sibling depends on the exact depth/width variant — verify the BOM position against the base part number 7C4251 before committing a substitute. ## Package and board-fit — 32-TQFP Housed in a 32-lead TQFP (7x7 mm) with a 0.8 mm pitch, the CY7C4251V-15AC is a surface-mount part suited for reflow assembly. The supplier device package (32-TQFP 7x7) matches the standard JEDEC footprint for this body size — layout guidance is available in the CY7C series datasheet. The commercial temperature grade (0°C to 70°C) limits deployment to indoor, temperature-controlled environments — not suitable for extended industrial or automotive ambient ranges without active cooling.","metaTitle":"Infineon CY7C4251V-15AC Sync FIFO, 72K (8K x 9), 66.7MHz","metaDescription":"Obsolete Infineon CY7C4251V-15AC synchronous FIFO memory, 72K (8K x 9), 66.7 MHz data rate, 11 ns access time, 3-3.6 V, 0-70°C, 32-TQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"CY7C","Package":"Bag","Function":"Synchronous","Data Rate":"66.7MHz","Access Time":"11ns","Memory Size":"72K (8K x 9)","FWFT Support":"No","Mounting Type":"Surface Mount","Expansion Type":"Depth, Width","Package / Case":"32-TQFP","Product Status":"Obsolete","Bus Directional":"Uni-Directional","lifecycle_stage":"eol_hot","Voltage - Supply":"3 V ~ 3.6 V","Base Product Number":"7C4251","Operating Temperature":"0°C ~ 70°C","Retransmit Capability":"No","Current - Supply (Max)":"20mA","Supplier Device Package":"32-TQFP (7x7)","Programmable Flags Support":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/df4f1ff7b1702b218cac1ede28578c24.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the memory organization and data rate of the CY7C4251V-15AC?","answer":"It is organized as 8 K x 9 bits (72 Kbit total) and supports a synchronous data rate of 66.7 MHz with an 11 ns access time. The 9-bit width includes a ninth bit for parity or control, common in telecom and data-buffer applications."},{"question":"What package does the CY7C4251V-15AC use?","answer":"It comes in a 32-lead TQFP (7x7 mm body, 0.8 mm pitch), surface-mount. The supplier device package is 32-TQFP (7x7)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4251V-15AC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4251V-15AC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:19:33.680Z","lastPublished":"2026-07-21T02:19:33.680Z","indexable":true}}