{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1399BN-12ZXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1399BN-12ZXC","canonicalUrl":"https://icboms.com/infineon/CY7C1399BN-12ZXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1399BN-12ZXC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C1399BN-12ZXC asynchronous SRAM, 256Kbit, 32K x 8 organization, 12 ns access time, parallel interface, 3V to 3.6V supply, 28-TSSOP, 0°C to 70°C.","salesMarkdown":"## 256Kbit asynchronous SRAM — 12 ns access, 32K x 8 organization The CY7C1399BN-12ZXC is a 256Kbit asynchronous SRAM organized as 32K words by 8 bits, with a 12 ns access time that sets the read-cycle ceiling — the memory controller must complete the address-to-data valid window within this interval, or wait states are required. ## Obsolete — no official successor on record For existing BOM lines, the only sourcing channel is independent distribution — quantities are lot-specific and confirmed at RFQ. ## 28-TSSOP surface-mount — 0.465-inch body width The part ships in tray packaging — no tape-and-reel option is listed, so pick-and-place feeders require a tray-to-tape conversion or manual handling for low-volume builds. The part is not qualified for extended industrial (-40°C to +85°C) or automotive temperature ranges.","metaTitle":"CY7C1399BN-12ZXC Infineon 256Kbit Async SRAM, 12 ns","metaDescription":"CY7C1399BN-12ZXC 256Kbit asynchronous SRAM, 32K x 8, 12 ns access time, 3V-3.6V, 0°C to 70°C, 28-TSSOP.","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":"12 ns","Memory Size":"256Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"28-TSSOP (0.465\\\", 11.80mm Width)","Product Status":"Obsolete","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-TSOP I","Write Cycle Time - Word, Page":"12ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fef115cca883337317066bfca634e597.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1399BN-12ZXC obsolete or end of life?","answer":"Yes, Infineon lists the CY7C1399BN-12ZXC as obsolete. No official successor order code has been published. The part is sourced through independent surplus channels; quantities are confirmed at RFQ."},{"question":"Does CY7C1399BN-12ZXC have a RoHS compliant version?","answer":"The evidence does not record a separate RoHS compliance statement for this order code."},{"question":"What is the replacement for CY7C1399BN-12ZXC?","answer":"The part is obsolete and no pin-compatible successor has been published. A parametric substitute with the same 256Kbit density, 12 ns access, 3.3V supply, and 28-TSSOP footprint would need to be evaluated against the specific BOM timing and signal-integrity requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1399BN-12ZXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1399BN-12ZXC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:07:32.878Z","lastPublished":"2026-07-21T02:07:32.878Z","indexable":true}}