{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C0251-15AXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C0251-15AXCT","canonicalUrl":"https://icboms.com/infineon/CY7C0251-15AXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C0251-15AXCT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C0251-15AXCT, dual-port asynchronous SRAM, 144 Kbit organized 8K×18, 15 ns access time, 4.5–5.5 V supply, 100-TQFP, commercial temperature 0–70 °C.","salesMarkdown":"The Infineon CY7C0251-15AXCT is a 144 Kbit dual-port asynchronous SRAM organized as 8K×18. Two independent ports with separate address, data, and control lines let two bus masters — two processors, a processor and a DMA controller, or a processor and an FPGA — access the same memory array simultaneously. The 18-bit word width (8K×18) is a natural fit for systems that need a parity or tag bit alongside a 16-bit data word — common in networking equipment and RAID controllers where data integrity is checked in hardware. The parallel memory interface and 4.5–5.5 V supply rail place it in legacy 5 V logic environments, not modern 3.3 V or 1.8 V core designs. ## 15 ns access time — the timing decision In an asynchronous system, the access time directly sets the minimum cycle time for a read or write operation. A 15 ns access means the SRAM can complete a random access in 15 ns from address valid, so a bus running at 66 MHz (15 ns period) can hit back-to-back accesses with zero wait states — provided the address hold and data setup margins are met. If your bus runs faster than 66 MHz, you need a faster SRAM; if it runs slower, this part has timing headroom. Infineon lists the CY7C0251-15AXCT as Obsolete. ## Package and handling notes That is a fine-pitch surface-mount package.","metaTitle":"Infineon CY7C0251-15AXCT Dual-Port SRAM, 144Kbit, 15 ns","metaDescription":"Infineon CY7C0251-15AXCT dual-port asynchronous SRAM, 144 Kbit (8K×18), 15 ns access time, 4.5–5.5 V, 100-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":"-","Package":"Tape & Reel (TR)","Technology":"SRAM - Dual Port, Asynchronous","Access Time":"15 ns","Memory Size":"144Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"100-LQFP","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C0251","Memory Organization":"8K x 18","Operating Temperature":"0°C~70°C(TA)","Supplier Device Package":"100-TQFP (14x14)","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/acb212b00bae884886f16db8e44aa706.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C0251-15AXCT obsolete?","answer":"Yes, Infineon lists the CY7C0251-15AXCT as Obsolete. Production has ended and no last-time-buy window remains. Sourcing is through surplus and broker channels only."},{"question":"Is CY7C0251-15AXCT compatible with CY7C0251-15AXC?","answer":"The CY7C0251-15AXC is the tray/tube variant of the same die; the -AXCT suffix indicates Tape & Reel packaging. Electrically and functionally they are identical — same 144 Kbit dual-port SRAM, same 15 ns access time, same 100-TQFP package. The only difference is the shipping medium."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C0251-15AXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C0251-15AXCT 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}}