{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4225-15AXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4225-15AXC","canonicalUrl":"https://icboms.com/infineon/CY7C4225-15AXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C4225-15AXC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C4225-15AXC synchronous FIFO, 66.7 MHz data rate, 10 ns access time, 18K (1K x 18) memory, 4.5 V ~ 5.5 V supply, 64-TQFP (14x14), 0°C ~ 70°C.","salesMarkdown":"## Synchronous FIFO for 5 V bus buffering The Cypress CY7C4225-15AXC is a synchronous FIFO memory from the CY7C series, organized as 1K x 18 bits (18K total). The part supports depth and width expansion, retransmit capability, and programmable flags — features that simplify flow control in DSP or ASIC interfaces. At 66.7 MHz the cycle time is 15 ns; the 10 ns access time leaves 5 ns of setup/hold margin for the reading device. That margin shrinks with trace delay and loading, so a board-level timing simulation is advisable when the FIFO feeds a fast ASIC or FPGA. The synchronous interface eliminates the dead cycles of asynchronous FIFOs, enabling back-to-back writes at full clock rate. ## 18K (1K x 18) — buffer sizing and bus width The 1K depth holds 1024 18-bit words. For a 16-bit data bus with parity or control bits, the extra two bits per word are useful for sideband signaling. If the application needs deeper buffering, the depth-expansion mode chains multiple devices without external logic. Width expansion handles 32-bit or wider buses by paralleling FIFOs with common control signals. The CY7C4225-15AXC is officially obsolete per the manufacturer's lifecycle status. Buyers should verify date code and condition (new original, not refurbished) with the supplier. ## 5 V supply and 45 mA supply current Maximum supply current is 45 mA — a modest load for a 5 V rail, but the 64-TQFP package's thermal impedance should be checked if the device runs near full clock rate continuously in a still-air enclosure.","metaTitle":"CY7C4225-15AXC Synchronous FIFO, 66.7 MHz, 18K (1K x 18)","metaDescription":"CY7C4225-15AXC synchronous FIFO from Cypress, 66.7 MHz data rate, 10 ns access time, 18K (1K x 18) memory, 64-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":"Tray","Function":"Synchronous","Data Rate":"66.7MHz","Access Time":"10ns","Memory Size":"18K (1K 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":"7C4225","Operating Temperature":"0°C ~ 70°C","Retransmit Capability":"Yes","Current - Supply (Max)":"45mA","Supplier Device Package":"64-TQFP (14x14)","Programmable Flags Support":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e04889be73c539b31e9c2648be4d9d69.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the CY7C4225-15AXC a synchronous FIFO and what is its data rate?","answer":"Yes, it is a synchronous FIFO with a maximum data rate of 66.7 MHz and a 10 ns access time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4225-15AXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4225-15AXC 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}}