{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1021B-15VXE","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1021B-15VXE","canonicalUrl":"https://icboms.com/infineon/CY7C1021B-15VXE","factsUrl":"https://icboms.com/api/mcp/products/CY7C1021B-15VXE","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1021B-15VXE, 1Mbit asynchronous SRAM, 64K x 16 organization, 15 ns access time, 4.5V to 5.5V supply, parallel interface, -40°C to 125°C, 44-SOJ package, Tray.","salesMarkdown":"The Infineon CY7C1021B-15VXE is a 1Mbit asynchronous SRAM organized as 64K words of 16 bits each, accessed through a parallel interface. The 15 ns write cycle time matches the read access, so back-to-back read-write transitions stay within one clock edge of a typical 66 MHz memory controller without wait states. ## Industrial temperature grade — where this SRAM runs At 125°C the leakage current climbs, but the 15 ns timing is specified across the full temperature range, so the bus margin holds. This part is now available only through independent distribution — surplus inventory, new-old-stock, or broker-sourced lots. If your BOM still specifies this exact order code, the procurement path is a one-time buy of available stock, not a recurring supply. For a new design or a production line that needs a long-term source, the logical move is to qualify a pin-compatible 5 V asynchronous SRAM in a 44-SOJ package from a current-production family. ## 44-SOJ package — footprint and layout note The 44-BSOJ package (0.400-inch body width, 10.16 mm) is a surface-mount SOJ with J-bend leads on 1.27 mm pitch. It is a common footprint for 1Mbit asynchronous SRAMs from the 2000s era. When sourcing a replacement, the 44-SOJ land pattern is the fixed constraint — any alternate must match the JEDEC SOJ-44 footprint exactly.","metaTitle":"CY7C1021B-15VXE SRAM, 1Mbit 64Kx16, 15 ns, Obsolete","metaDescription":"Infineon CY7C1021B-15VXE 1Mbit asynchronous SRAM, 64Kx16 organization, 15 ns access time, 4.5V-5.5V supply, -40°C to 125°C, 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":"Tray","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":"-40°C~125°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/0fb2bf1fb1bf1eaa7b1a14798a1f21cb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1021B-15VXE obsolete?","answer":"Yes, the CY7C1021B-15VXE is officially Obsolete per Infineon's lifecycle status. It is no longer in production and has no direct successor. Available only through surplus or broker channels."},{"question":"What is the replacement for CY7C1021B-15VXE?","answer":"Infineon has not published an official replacement for this part. For a pin-compatible alternative, look for a 5 V, 64K x 16 asynchronous SRAM in a 44-SOJ package with 15 ns or faster access time from a current-production family. The 44-SOJ footprint and 5 V supply are the fixed constraints."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1021B-15VXE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1021B-15VXE 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}}