{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4265V-15ASC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4265V-15ASC","canonicalUrl":"https://icboms.com/infineon/CY7C4265V-15ASC","factsUrl":"https://icboms.com/api/mcp/products/CY7C4265V-15ASC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C4265V-15ASC synchronous FIFO, 288K (16K x 18), 66.7 MHz data rate, 10 ns access time, 3 V to 3.6 V supply, 64-LQFP, 0°C to 70°C.","salesMarkdown":"## Synchronous FIFO for 66.7 MHz data paths The Cypress CY7C4265V-15ASC is a synchronous FIFO memory organized 16K x 18, providing 288K bits of buffering with a 66.7 MHz maximum data rate and a 10 ns access time. ## 10 ns access time — bus timing margin At a 66.7 MHz clock (15 ns period), a 10 ns access leaves roughly 5 ns of setup margin to the downstream capture flop — workable but tight. If your system clock jitter or PCB trace delay eats into that margin, consider a faster FIFO or add output register stages. This spec is the one to check against your worst-case timing analysis. The CY7C4265V-15ASC is officially obsolete per the manufacturer's lifecycle record. Cypress (now part of Infineon) no longer produces this device, and no direct replacement order code is listed. ## 16K x 18 organization and expansion The 16K x 18 organization means 16,384 words of 18 bits each — the extra two bits per word are typically used for parity or control tags alongside a 16-bit data bus. Depth and width expansion are supported, so multiple devices can cascade for deeper or wider buffers without external logic. If your design needs a larger FIFO, look at the same CY7C series with higher density, but verify pin compatibility — the footprint changed across density options. ## Supply and temperature grade Maximum supply current is 30 mA, a modest draw that a standard 3.3 V LDO can handle.","metaTitle":"CY7C4265V-15ASC Synchronous FIFO, 66.7 MHz, 10 ns Access","metaDescription":"Cypress CY7C4265V-15ASC synchronous FIFO, 288K (16K x 18), 66.7 MHz data rate, 10 ns access time.","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":"10ns","Memory Size":"288K (16K x 18)","FWFT Support":"No","Mounting Type":"Surface Mount","Expansion Type":"Depth, Width","Package / Case":"64-LQFP","Product Status":"Obsolete","Bus Directional":"Uni-Directional","lifecycle_stage":"eol_hot","Voltage - Supply":"3 V ~ 3.6 V","Base Product Number":"7C4265","Operating Temperature":"0°C ~ 70°C","Retransmit Capability":"Yes","Current - Supply (Max)":"30mA","Supplier Device Package":"64-TQFP (10x10)","Programmable Flags Support":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/59187192490f6113a9f377dbdd43ea58.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C4265V-15ASC obsolete?","answer":"Yes, the CY7C4265V-15ASC is officially obsolete. Cypress (Infineon) no longer manufactures it."},{"question":"What is the replacement for CY7C4265V-15ASC?","answer":"No official replacement order code is listed by the manufacturer. For a pin-compatible alternative within the Cypress synchronous FIFO family, you would need to cross-reference the 64-LQFP footprint and 3.3 V supply against other CY7C series densities — but verify timing and flag compatibility against your design. No direct drop-in is guaranteed."},{"question":"What is the access time of CY7C4265V-15ASC?","answer":"The access time is 10 ns, measured from the read clock edge to valid data output. At the 66.7 MHz maximum clock rate, this leaves about 5 ns of setup margin for the receiving logic."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4265V-15ASC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4265V-15ASC 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}}