{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C199CN-15ZXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C199CN-15ZXCT","canonicalUrl":"https://icboms.com/infineon/CY7C199CN-15ZXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C199CN-15ZXCT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C199CN-15ZXCT asynchronous SRAM, 256Kbit (32K x 8), 15 ns access time, 4.5V-5.5V, 0°C-70°C, 28-TSSOP, Tape & Reel.","salesMarkdown":"## Memory density and bus timing for legacy 5V parallel designs The CY7C199CN-15ZXCT is a 256Kbit asynchronous SRAM organized as 32K x 8 bits, with a 15 ns access time that sets the ceiling for read-cycle timing on a parallel bus. The 15 ns access time means the memory can complete a read within 15 ns of the address being valid. For a system with a 33 MHz bus clock (30 ns period), this leaves 15 ns of margin after the address settles before the data must be latched — adequate for most asynchronous bus controllers, but tight if the controller adds its own propagation delay. No stock-holding claim is made here. ## Package and board-fit for the 28-TSSOP footprint The supplier device package is designated 28-TSOP I — the two terms refer to the same mechanical outline. Tape & Reel packaging supports pick-and-place reflow soldering.","metaTitle":"Infineon CY7C199CN-15ZXCT 256Kbit Async SRAM, 15 ns","metaDescription":"Obsolete 256Kbit (32K x 8) parallel asynchronous SRAM. 15 ns access time, 4.5V-5.5V supply, 0°C-70°C. Sourced to order against RFQ through independent channels.","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":"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":"4.5V ~ 5.5V","Base Product Number":"CY7C199","Memory Organization":"32K x 8","Operating Temperature":"0°C~70°C(TA)","Supplier Device Package":"28-TSOP I","Write Cycle Time - Word, Page":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/be3eb29c05011dcde0f96701ccb420e4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to CY7C199CN-15ZXCT?","answer":"No official pin-compatible successor or cross-reference is recorded from Infineon for this order code. A functional replacement would require a 256Kbit (32K x 8) asynchronous SRAM in a 28-TSSOP package with a 15 ns or faster access time and a 5V ±10% supply — but the pinout must be verified against the target PCB layout before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C199CN-15ZXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C199CN-15ZXCT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:15:37.951Z","lastPublished":"2026-07-21T02:15:37.951Z","indexable":true}}