{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C185-25PC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C185-25PC","canonicalUrl":"https://icboms.com/infineon/CY7C185-25PC","factsUrl":"https://icboms.com/api/mcp/products/CY7C185-25PC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C185-25PC, 64Kbit asynchronous SRAM, 8K x 8 organization, 25 ns access time, 4.5–5.5 V supply, 28-PDIP through-hole package, 0–70 °C commercial temperature range.","salesMarkdown":"That 25 ns window sets the minimum read-cycle time the CPU must wait when this memory is on the bus — fast enough for most 8-bit and 16-bit microcontrollers running at 10–20 MHz without inserting wait states, but tight for a 40 MHz 8051 or a Z80 derivative clocked above 10 MHz. The parallel interface is straightforward: address, data, chip enable, output enable, write enable — no clock, no burst logic. The 28-pin PDIP package is through-hole, so rework and hand-assembly are feasible, but the supply is finite and pricing varies by lot condition. If the design still requires a 5 V asynchronous SRAM in a 28-DIP footprint, a pin-compatible second-source search is the next step; if the board can tolerate a surface-mount package, the SOIC-28 or TSOP-II variants of the same density open up more options. ## 5 V supply and 0–70 °C — the environment it fits If the application needs -40 °C to +85 °C, look at the industrial-grade suffix variants of the same base part number.","metaTitle":"Cypress CY7C185-25PC 64Kbit Asynchronous SRAM, 25 ns","metaDescription":"Cypress CY7C185-25PC 64Kbit asynchronous SRAM, 8K x 8, 25 ns access time, 4.5–5.5 V, 28-PDIP, 0–70°C.","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":"64Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Through Hole","Package / Case":"28-DIP (0.300\\\", 7.62mm)","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-PDIP","Write Cycle Time - Word, Page":"25ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e9f629d27aafee27bd038464819317e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C185-25PC obsolete?","answer":"Yes, the CY7C185-25PC is marked Obsolete. Cypress no longer produces it, and no direct factory replacement is listed. Sourcing is limited to surplus and broker inventory."},{"question":"What is the equivalent replacement for CY7C185-25PC?","answer":"No official equivalent or cross-reference is recorded for this part. A pin-compatible second source would need to match the 28-pin PDIP footprint, 8K x 8 organization, 5 V supply, and 25 ns access time. Parts from Alliance Memory, ISSI, or Renesas in the same density and package are the typical cross-shop candidates, but each must be verified against the timing and supply specs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C185-25PC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C185-25PC 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}}