{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1399BN-15VXAT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1399BN-15VXAT","canonicalUrl":"https://icboms.com/infineon/CY7C1399BN-15VXAT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1399BN-15VXAT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C1399BN-15VXAT asynchronous SRAM, 256Kbit (32K x 8), 15 ns access, 3 V – 3.6 V, parallel interface, 28-SOJ 7.62 mm, -40°C to 85°C, Tape & Reel.","salesMarkdown":"## Obsolete — sourcing through surplus and broker channels The CY7C1399BN-15VXAT is officially marked obsolete by Infineon Technologies, meaning the manufacturer's last-time-buy window has closed and no further production is planned. ## 32K x 8 asynchronous SRAM — 15 ns access, 3.3 V single-rail Organised 32K words by 8 bits, the 256 Kbit density suits small boot-code storage, parameter tables, or scratchpad buffers in embedded systems that need deterministic read/write timing without refresh overhead. The 15 ns access time sets the memory-read cycle ceiling — a CPU sampling data at 15 ns or faster must insert wait states unless its memory controller matches this window. Write cycle time is also 15 ns per word. No separate Vddq or Vpp required. ## 28-SOJ footprint — standard 300-mil body width Housed in a 28-lead SOJ (Small Outline J-bend) package with 7.62 mm (300 mil) body width — a common footprint shared by many 32K x 8 asynchronous SRAMs, simplifying board layout if a cross-reference is needed.","metaTitle":"Infineon CY7C1399BN-15VXAT 256Kbit SRAM, 15ns, 28-SOJ","metaDescription":"Obsolete 256Kbit asynchronous SRAM, 32Kx8, 15ns access, 3V-3.6V, -40°C to 85°C, 28-SOJ. Sourced to order against RFQ through independent distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"title":"CY7C1399BN-15VXAT","Package":"Tape & Reel (TR)","Technology":"SRAM - Asynchronous","Access Time":"15 ns","Memory Size":"256Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"28-BSOJ (0.300\\\", 7.62mm Width)","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"3V ~ 3.6V","Base Product Number":"CY7C1399","Memory Organization":"32K x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"28-SOJ","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8994859320307c76e96ca5d970e4d6dd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C1399BN-15VXAT/alternatives.json"},"ai":{"faq":[{"question":"What is the memory organisation and access time of this SRAM?","answer":"It is a 256 Kbit asynchronous SRAM organised as 32K words x 8 bits, with a 15 ns access time and a 15 ns write cycle time per word."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1399BN-15VXAT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1399BN-15VXAT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:07:32.767Z","lastPublished":"2026-07-21T02:07:32.767Z","indexable":true}}