{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C128A-25PC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C128A-25PC","canonicalUrl":"https://icboms.com/infineon/CY7C128A-25PC","factsUrl":"https://icboms.com/api/mcp/products/CY7C128A-25PC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C128A-25PC, asynchronous SRAM, 16Kbit (2K x 8), 25 ns access time, parallel interface, 4.5V–5.5V supply, 0°C–70°C, 24-PDIP package.","salesMarkdown":"The CY7C128A-25PC is a 16Kbit (2K x 8) asynchronous SRAM from Cypress, in a 24-PDIP package. Its 25 ns access time is the critical timing parameter for interfacing with legacy 8-bit microprocessors and controllers that expect a fast memory response without wait states. ## Obsolete — how to source it today That means new-production factory orders are not an option. Supply is limited to surplus and broker-channel inventory — typically pulled from old-stock trays or reels. ## Commercial temp range — indoor use only Not rated for automotive, industrial, or outdoor environments where extended temperature or humidity cycling is present. ## Asynchronous interface — no clock, simple glue As an asynchronous SRAM, the CY7C128A-25PC uses address and control signals (CE, OE, WE) without a clock. This simplifies the bus interface for processors that do not have a dedicated memory clock or for designs where timing is handled by combinatorial logic. The 25 ns write cycle time matches the read access, allowing symmetric read/write performance. Standard 0.100\" pitch DIP footprint. No exposed pad or thermal management features — the plastic DIP relies on ambient airflow for cooling. MSL rating is typical for through-hole DIPs (MSL 1 or 3, not specified here).","metaTitle":"CY7C128A-25PC Cypress SRAM, 16Kbit, 25 ns, 24-PDIP","metaDescription":"Cypress CY7C128A-25PC asynchronous SRAM, 2K x 8, 25 ns access, 4.5V-5.5V, 24-PDIP.","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":"16Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Through Hole","Package / Case":"24-DIP (0.300\\\", 7.62mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C128A","Memory Organization":"2K x 8","Operating Temperature":"0°C~70°C(TA)","Supplier Device Package":"24-PDIP","Write Cycle Time - Word, Page":"25ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfa2e1cf77022eb268a3dfd69183699d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C128A-25PC obsolete?","answer":"Yes, Cypress has listed the CY7C128A-25PC as obsolete. No direct factory replacement is documented. Supply is available through surplus and broker channels."},{"question":"What is the replacement for CY7C128A-25PC?","answer":"For a pin-compatible replacement, consider other 2K x 8 asynchronous SRAMs in 24-PDIP with 25 ns or faster access time, such as the ISSI IS61C256AH-25J or similar industry-standard parts — but verify pinout and timing compatibility against your design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C128A-25PC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C128A-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}}