{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C185-35VC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C185-35VC","canonicalUrl":"https://icboms.com/infineon/CY7C185-35VC","factsUrl":"https://icboms.com/api/mcp/products/CY7C185-35VC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon (Cypress) CY7C185-35VC, Asynchronous SRAM, 64Kbit (8K x 8), Parallel Interface, 35 ns Access Time, 4.5V ~ 5.5V Supply, 0°C ~ 70°C, 28-SOJ, Tube.","salesMarkdown":"## 64Kbit asynchronous SRAM for 5V legacy buses The Infineon (formerly Cypress) CY7C185-35VC is a 64Kbit asynchronous SRAM organized as 8K x 8 bits, accessed through a parallel interface with a 35 ns access time. This part is a drop-in fit for legacy 5V logic systems that need fast scratchpad memory, small look-up tables, or cache buffers — typical in older telecom line cards, industrial controllers, and test equipment that still run on 5V rails. ## 35 ns access time — timing margin for 8-bit buses The 35 ns access time (and matching 35 ns write cycle) sets the bus timing window for read and write operations. In a system with a 5V 8-bit microcontroller or a CPLD memory controller running at 10–20 MHz, this gives about 15–25 ns of margin after address decode and buffer delays — enough for a single wait-state or a zero-wait-state design depending on the controller's memory timing. The parallel interface is straightforward: chip enable, output enable, and write enable control the bus, with no clock or burst logic to configure. ## 28-SOJ package — legacy footprint, verify board clearance The J-lead form factor was common in the 1990s and early 2000s for SRAMs and DRAMs; it offers a smaller footprint than a DIP but requires the correct pad geometry and solder paste stencil aperture to avoid opens. For new designs, look at the Cypress (now Infineon) CY7C1021 or CY7C1041 series in 5V or 3.3V variants — but these are different densities and packages, not pin-compatible.","metaTitle":"CY7C185-35VC 64Kbit Asynchronous SRAM, 35 ns, 28-SOJ","metaDescription":"Infineon (Cypress) CY7C185-35VC 64Kbit (8K x 8) parallel SRAM, 35 ns access time, 4.5V-5.5V supply, 0°C-70°C, 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":"35 ns","Memory Size":"64Kbit","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":"CY7C185","Memory Organization":"8K x 8","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"28-SOJ","Write Cycle Time - Word, Page":"35ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/26286f4079bc748514fa0dbdf17e4407.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C185-35VC obsolete and what is the replacement?","answer":"Yes, the CY7C185-35VC is obsolete per Infineon (Cypress). There is no direct pin-compatible replacement from the manufacturer. For new designs, consider the CY7C1021 (64K x 16) or CY7C1041 (256K x 16) series in 5V or 3.3V — but these are different densities and packages, requiring a board redesign."},{"question":"What is the access time of CY7C185-35VC?","answer":"The access time is 35 ns, with a matching 35 ns write cycle time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C185-35VC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C185-35VC 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}}