{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4261V-10JC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4261V-10JC","canonicalUrl":"https://icboms.com/infineon/CY7C4261V-10JC","factsUrl":"https://icboms.com/api/mcp/products/CY7C4261V-10JC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C series synchronous FIFO, CY7C4261V-10JC, 144K (16K x 9) memory size, 100 MHz data rate, 8 ns access time, 32-PLCC J-Lead package, tube.","salesMarkdown":"## Synchronous FIFO for 100 MHz data-path buffering The CY7C4261V-10JC is a 144 Kbit (16K x 9) synchronous FIFO from Infineon's CY7C series, designed for unidirectional data buffering at clock rates up to 100 MHz with a corresponding 8 ns access time. The 32-pin PLCC J-Lead package (32-PLCC, 11.43x13.97 mm body) is a through-hole-reflow-compatible surface-mount footprint common in late-1990s to mid-2000s board designs, suitable for rework with a hot-air station and a fine-tip iron. ## Timing envelope and buffer depth The 100 MHz maximum clock rate and 8 ns access time set the cycle budget for the host controller: the FIFO can accept a write or issue a read every 10 ns, with data valid on the output bus 8 ns after the read clock edge. With 16,384 words of 9-bit depth, the FIFO holds 144 Kbit total — enough to buffer one full 16 KB sector plus a parity byte, or to absorb burst mismatches in a 100 MHz data channel where the producer and consumer run at slightly different instantaneous rates. Programmable flags (almost-full, almost-empty) let the system set watermark thresholds via the flag-offset registers, so the host can prefetch or drain before the FIFO hits its full or empty boundary — useful for DMA-driven transfers where latency to service the flag interrupt matters. The part carries a commercial temperature grade (0°C to 70°C) and comes in a 32-PLCC J-Lead package; no direct pin-compatible replacement is documented in the CY7C family, so a board-level redesign would be needed to migrate to a current-generation FIFO. No last-time-buy window remains open with the factory.","metaTitle":"CY7C4261V-10JC Synchronous FIFO, 144K (16K x 9), 100 MHz","metaDescription":"Infineon CY7C4261V-10JC synchronous FIFO, 144K (16K x 9), 100 MHz data rate, 8 ns access time, 32-PLCC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"CY7C","Package":"Tube","Function":"Synchronous","Data Rate":"100MHz","Access Time":"8ns","Memory Size":"144K (16K x 9)","FWFT Support":"No","Mounting Type":"Surface Mount","Expansion Type":"Depth, Width","Package / Case":"32-LCC (J-Lead)","Product Status":"Obsolete","Bus Directional":"Uni-Directional","lifecycle_stage":"eol_hot","Voltage - Supply":"3 V ~ 3.6 V","Base Product Number":"7C4261","Operating Temperature":"0°C~70°C","Retransmit Capability":"No","Current - Supply (Max)":"25mA","Supplier Device Package":"32-PLCC (11.43x13.97)","Programmable Flags Support":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fb16b6095972da8eb8cea98c41e6837d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the memory size and organization of the CY7C4261V-10JC?","answer":"144 Kbit organized as 16,384 words by 9 bits (16K x 9). The 9th bit is typically used for parity or a control flag in the data word."},{"question":"What package does the CY7C4261V-10JC use?","answer":"32-pin PLCC (J-Lead), supplier device package size 11.43x13.97 mm. It is a surface-mount package that can be hand-soldered or reflowed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4261V-10JC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4261V-10JC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:19:50.381Z","lastPublished":"2026-07-21T02:19:50.381Z","indexable":true}}