{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C128A-20VC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C128A-20VC","canonicalUrl":"https://icboms.com/infineon/CY7C128A-20VC","factsUrl":"https://icboms.com/api/mcp/products/CY7C128A-20VC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C128A-20VC asynchronous SRAM, 16Kbit (2K x 8), 20 ns access time, 4.5V-5.5V supply, 24-SOJ package, tube.","salesMarkdown":"## 20 ns asynchronous SRAM for legacy 5V buses The CY7C128A-20VC is a 16Kbit asynchronous SRAM organized as 2K x 8, with a 20 ns access time that sets the read-cycle floor on a 5V parallel bus. At 20 ns, the part keeps up with a 50 MHz bus clock without wait states, but the real margin comes from the 20 ns write cycle — word and page writes complete in a single cycle, so the bus master doesn't stretch the strobe. Supply range is 4.5V to 5.5V, which means this part lives on a legacy 5V rail. Dropping it onto a 3.3V memory bus without a level translator will leave the inputs below VIH and the outputs below VOH — the bus won't see valid logic levels. ## 24-SOJ package — rework-friendly gull-wing The 24-SOJ (Small Outline J-lead) package uses a gull-wing lead form that lifts the body off the board. That air gap makes hand rework straightforward — a hot-air station at 300°C with a fine nozzle lifts the part cleanly without wicking solder under the body. The J-lead profile also gives a visible solder joint for inspection, unlike a BGA where the joint is hidden. The package is surface-mount, not through-hole, so the board needs a 24-pin SOJ footprint. The 0.300-inch body width is standard — the same footprint used by other 24-pin SOJ SRAMs from the era, which simplifies a drop-in replacement if the original part is gone. That means the manufacturer no longer produces it, and no pin-compatible drop-in from Infineon exists for new designs. Availability is lot-specific and confirmed at quote time — the page does not carry live stock data. A quote request will return current pricing and lead time for the quantity needed. ## Commercial temperature — indoor equipment only This part is suited for benchtop instruments, office equipment, or telecom gear in a climate-controlled room.","metaTitle":"Infineon CY7C128A-20VC 16Kbit SRAM, 20 ns, 24-SOJ","metaDescription":"Infineon CY7C128A-20VC 16Kbit asynchronous SRAM, 20 ns access, 2K x 8, 4.5-5.5V, 24-SOJ. Obsolete — sourced to order through independent channels.","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":"20 ns","Memory Size":"16Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"24-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":"CY7C128A","Memory Organization":"2K x 8","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"24-SOJ","Write Cycle Time - Word, Page":"20ns"}},"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 access time and memory organization of the CY7C128A-20VC?","answer":"20 ns access time, organized as 2K x 8 (16Kbit total). The write cycle time is also 20 ns for both word and page writes."},{"question":"What package does the CY7C128A-20VC use?","answer":"24-SOJ (Small Outline J-lead), surface-mount, 0.300-inch body width. The supplier device package is 24-SOJ."},{"question":"What supply voltage does the CY7C128A-20VC require?","answer":"4.5V to 5.5V — a legacy 5V-only part. It will not operate correctly on a 3.3V bus without a level translator."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C128A-20VC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C128A-20VC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T01:57:47.725Z","lastPublished":"2026-07-21T01:57:47.725Z","indexable":true}}