{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1399BN-15VXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1399BN-15VXC","canonicalUrl":"https://icboms.com/infineon/CY7C1399BN-15VXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1399BN-15VXC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1399BN-15VXC, 256Kbit asynchronous SRAM, 15 ns access time, 32K x 8 organization, 3.3V supply, 28-SOJ surface-mount, commercial 0°C to 70°C, tube.","salesMarkdown":"The CY7C1399BN-15VXC: It operates from a 3.3V supply (3V to 3.6V range) and comes in a 28-SOJ surface-mount package. This is a volatile memory — data is retained only while power is applied. Typical applications include cache buffers, scratchpad memory, and data storage in embedded systems, telecom equipment, and industrial controllers where fast, simple read/write access is needed without refresh overhead. The SRAM presents valid data within 15 ns of the address being stable. The CY7C1399BN-15VXC is marked obsolete by the manufacturer. ## 28-SOJ package — footprint and rework notes The 28-SOJ (Small Outline J-lead) package has a body width of 7.62 mm (0.300\") and uses J-bend leads on a standard SOIC pitch. It is surface-mount but the J-leads are easier to hand-solder than fine-pitch QFP or BGA — a rework station with a hot-air pencil and some flux can handle removal and replacement. The SOJ footprint is common, so PCB layout is straightforward with standard land patterns.","metaTitle":"Cypress CY7C1399BN-15VXC 256Kbit Async SRAM, 15 ns","metaDescription":"Cypress CY7C1399BN-15VXC 256Kbit asynchronous SRAM, 15 ns access time, 32K x 8, 3.3V, 28-SOJ, 0°C to 70°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"title":"CY7C1399BN-15VXC","Package":"Tube","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":"0°C ~ 70°C (TA)","Supplier Device Package":"28-SOJ","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/69ff54d69906280bfa12bf5ffcc96488.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C1399BN-15VXC/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1399BN-15VXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1399BN-15VXC 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}}