{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C128A-15PC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C128A-15PC","canonicalUrl":"https://icboms.com/infineon/CY7C128A-15PC","factsUrl":"https://icboms.com/api/mcp/products/CY7C128A-15PC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C128A-15PC, 16Kbit (2K x 8) Asynchronous SRAM, Parallel Interface, 15 ns Access Time, 4.5V–5.5V Supply, 0°C–70°C, 24-DIP (0.300\", 7.62mm), Through Hole, Tube.","salesMarkdown":"## 16Kbit asynchronous SRAM in a 24-DIP — what you're getting The Cypress CY7C128A-15PC is a 16Kbit (organized as 2K x 8) asynchronous SRAM in a through-hole 24-pin DIP package (0.300\" body width, 7.62mm pitch). The parallel interface is straightforward: provide an address, assert chip select and output enable, and data appears on the bidirectional I/O lines within 15 ns. This part is volatile memory, so contents are lost when power drops below the retention threshold. For a 20 MHz bus with a 50 ns cycle, that leaves 35 ns of margin after the address settles — plenty of timing slack without needing a wait state. If you're replacing a slower SRAM (25 ns or 35 ns) on a legacy board, verify the address-to-data setup timing at the controller; the faster edge may require a small series resistor on the data lines to damp reflections on longer traces. It belongs in office equipment, indoor telecom line cards, benchtop instruments, or appliance control boards where the ambient stays within a conditioned space. Do not use this in a motor drive enclosure, an outdoor base station, or an engine bay — the silicon will not hold timing or data integrity above 70°C. ## Obsolete — how to source it today Cypress officially marked the CY7C128A-15PC as Obsolete. The only channel for this part is the independent distribution and broker market — new-old-stock (NOS) from surplus inventories, verified date-code lots, and customer-returned tested units. When sourcing, request date-code and test documentation; the longer the gap since the last production run (typically mid-2000s for this generation), the higher the counterfeit risk. ## Package and mounting — through-hole for legacy rework The 24-DIP (0.300\", 7.62mm) package is through-hole only — socketed or soldered directly into a PCB. The 0.300\" width is the narrow DIP variant, not the wider 0.600\" version, so confirm your board's footprint before ordering. If you are reworking a board that originally used a surface-mount SOJ or TSOP SRAM, this DIP will not fit without an adapter.","metaTitle":"Cypress CY7C128A-15PC 16Kbit Asynchronous SRAM, 15 ns","metaDescription":"Obsolete Cypress CY7C128A-15PC 16Kbit (2K x 8) asynchronous SRAM with 15 ns access time. 4.5V–5.5V supply, 0°C–70°C commercial temp.","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":"15 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":"15ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ab05321fe2552bdbd2e984ac4b11b7b6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for the CY7C128A-15PC?","answer":"Cypress does not list a direct pin-compatible replacement for this obsolete part. For new designs, consider a modern 16Kbit asynchronous SRAM in a 24-DIP or 28-SOIC package from Alliance Memory or ISSI, but verify the pinout and timing compatibility against your existing board layout. The CY7C128A-15PC uses a standard 24-pin DIP footprint common to many 2K x 8 SRAMs from the era."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C128A-15PC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C128A-15PC 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}}