{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C199-25VC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C199-25VC","canonicalUrl":"https://icboms.com/infineon/CY7C199-25VC","factsUrl":"https://icboms.com/api/mcp/products/CY7C199-25VC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C199-25VC, 256Kbit (32K x 8) Asynchronous SRAM, Parallel Interface, 25 ns Access Time, 4.5V ~ 5.5V Supply, 0°C ~ 70°C, 28-SOJ (0.300\", 7.62mm Width), Tube.","salesMarkdown":"## 256Kbit asynchronous SRAM for legacy 5V bus designs The Infineon CY7C199-25VC is a 256Kbit asynchronous SRAM organized as 32K x 8 bits, with a parallel interface and a 25 ns access time. ## 25 ns access — timing margin for fast 5V buses The 25 ns access time matches the read-cycle window of many 5V CPLDs, 8051-class MCUs, and legacy DSPs without wait states. If your bus runs at 33 MHz or slower, this part gives you at least 5 ns of timing margin after accounting for PCB trace delay and output load. The CY7C199-25VC is marked obsolete by Infineon. ## 28-SOJ footprint — board-level fit This is the same footprint used by many 32K x 8 SRAMs from the 1990s and 2000s, so a board originally laid out for a compatible SOJ-28 device can accept this part without a layout change.","metaTitle":"Infineon CY7C199-25VC 256Kbit Asynchronous SRAM, 25 ns","metaDescription":"CY7C199-25VC 256Kbit (32K x 8) parallel SRAM, 25 ns access, 4.5V-5.5V, 28-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":"Tube","Technology":"SRAM - Asynchronous","Access Time":"25 ns","Memory Size":"256Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"28-BSOJ (0.300\\\", 7.62mm 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-SOJ","Write Cycle Time - Word, Page":"25ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/db4c3dbfc281eb6c685e985fa829ece5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C199-25VC/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for CY7C199-25VC?","answer":"Infineon has not listed an official successor for the CY7C199-25VC. For a pin-compatible alternative in the same 32K x 8 asynchronous SRAM family, consider the CY7C199-15VC or CY7C199-20VC (faster access times) — verify timing compatibility with your bus. These are also obsolete and sourced through independent distribution."},{"question":"Is CY7C199-25VC compatible with 5V logic?","answer":"It is directly compatible with 5V TTL and CMOS buses without level translation."},{"question":"What is the access time of CY7C199-25VC?","answer":"The access time is 25 ns for both read and write cycles."},{"question":"What package does CY7C199-25VC use?","answer":"The supplier device package code is 28-SOJ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C199-25VC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C199-25VC 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}}