{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021B-15VXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021B-15VXCT","canonicalUrl":"https://icboms.com/infineon/CY7C1021B-15VXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021B-15VXCT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1021B-15VXCT, asynchronous SRAM, 1Mbit (64K x 16), 15 ns access time, 4.5V to 5.5V supply, 0°C to 70°C, 44-SOJ package, Tape & Reel.","salesMarkdown":"## 5V async SRAM for legacy bus interfaces The Infineon CY7C1021B-15VXCT is a 1 Mbit asynchronous SRAM organized as 64K words by 16 bits. In a 5 V system the address-to-data valid window is tight; the 15 ns figure is the spec that determines whether the bus timing budget closes. Packaged in a 44-pin SOJ (Small Outline J-lead) with a 0.400-inch body width, this surface-mount footprint was common on late-1990s through mid-2000s embedded boards. The Tape & Reel delivery format suits automated pick-and-place assembly. Infineon lists the CY7C1021B-15VXCT as Obsolete. For production BOM lines that still require this exact order code, procurement must go through the surplus and broker channel. Because no pin-compatible second source or direct replacement is documented in the available records, any substitution attempt requires a full qualification cycle — footprint match, timing verification at 15 ns, and 5 V supply compatibility. A drop-in from a different SRAM family (e.g., a 3.3 V part or a different package) will not work without board revision.","metaTitle":"CY7C1021B-15VXCT Infineon 1Mbit Async SRAM, 15 ns, 44-SOJ","metaDescription":"CY7C1021B-15VXCT Infineon 1Mbit asynchronous SRAM, 64K x 16 organization, 15 ns access time, 4.5V-5.5V supply, 44-SOJ.","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 - Asynchronous","Access Time":"15 ns","Memory Size":"1Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"44-BSOJ (0.400\\\", 10.16mm Width)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C1021","Memory Organization":"64K x 16","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"44-SOJ","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/82c7b961e3b5b1ab441dd2f6a6002ed8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy CY7C1021B-15VXCT and get a price?","answer":"CY7C1021B-15VXCT is obsolete from the manufacturer. Submit an RFQ for current availability and pricing — no stock figures or price lists are published for this discontinued part."},{"question":"Is CY7C1021B-15VXCT compatible with 5V systems?","answer":"Yes. All address, data, and control I/O operate at 5 V logic levels. It is not a 3.3 V or 1.8 V part."},{"question":"What is the direct replacement for CY7C1021B-15VXCT?","answer":"No official direct replacement is recorded in the available lifecycle data. The part is obsolete with no documented successor. A functionally equivalent replacement would need to match the 64K x 16 organization, 15 ns access time, 5 V supply, and 44-SOJ footprint — any candidate must be fully qualified for timing and mechanical fit before BOM substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021B-15VXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021B-15VXCT 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}}