{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4235-15AC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4235-15AC","canonicalUrl":"https://icboms.com/infineon/CY7C4235-15AC","factsUrl":"https://icboms.com/api/mcp/products/CY7C4235-15AC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C series synchronous FIFO, CY7C4235-15AC, 36K (2Kx18), 66.7MHz data rate, 10ns access time, 4.5-5.5V supply, 64-LQFP, 0 to 70°C, retransmit capable, programmable flags.","salesMarkdown":"## Synchronous FIFO for 5 V datapath buffering The part supports retransmit capability and programmable flags, making it suited for buffering in 5 V DSP or ASIC datapaths where bus turnaround and flow control are critical. ## 66.7 MHz clock and 10 ns access — timing budget fit At 66.7 MHz the FIFO delivers a 15 ns cycle period, and the 10 ns access time leaves 5 ns for clock-to-output plus board trace delay before the next rising edge. That margin is tight but workable in a single-clock-domain 5 V system with matched-length traces. If the host controller runs at a lower frequency, the FIFO still idles cleanly — no minimum clock rate is specified, so it can be strobed asynchronously within the cycle time. The CY7C4235-15AC is listed as obsolete. No official replacement part number is provided in the available records. Buyers should verify stock position and lead time before committing the BOM line. ## 2K x 18 organization — buffer sizing and bus width The 2K depth and 18-bit width suit applications that need to buffer 16-bit data plus two control/parity bits, or two 9-bit bytes per word. Depth expansion is supported via cascading, and width expansion is possible by paralleling multiple devices. The 36K total capacity handles moderate packet buffering in telecom line cards or industrial frame grabbers. It is not specified for industrial or automotive extended-temperature ranges.","metaTitle":"Cypress CY7C4235-15AC FIFO, 36K (2Kx18), 66.7MHz, 10ns, 5V","metaDescription":"Cypress CY7C4235-15AC synchronous FIFO, 36K (2Kx18), 66.7MHz data rate, 10ns access, 4.5-5.5V supply, 64-LQFP, 0 to 70°C.","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":"Tray","Function":"Synchronous","Data Rate":"66.7MHz","Access Time":"10ns","Memory Size":"36K (2K 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":"4.5 V ~ 5.5 V","Base Product Number":"7C4235","Operating Temperature":"0°C~70°C","Retransmit Capability":"Yes","Current - Supply (Max)":"45mA","Supplier Device Package":"64-TQFP (10x10)","Programmable Flags Support":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.5800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/faca8b5ef9cad59467323f16b05354b0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for CY7C4235-15AC?","answer":"For a pin-compatible alternative, buyers should cross-reference the Cypress CY7C series synchronous FIFO family with the same 64-LQFP footprint and 5 V supply. Sourcing through independent distribution is the current path for this obsolete part."},{"question":"What is the access time of CY7C4235-15AC?","answer":"The access time is 10 ns, with a synchronous data rate of 66.7 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4235-15AC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4235-15AC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}