{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C421-15AXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C421-15AXC","canonicalUrl":"https://icboms.com/infineon/CY7C421-15AXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C421-15AXC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C421-15AXC asynchronous FIFO, 512 × 9-bit depth, 15 ns access time, 50 MHz data rate, 4.5 V–5.5 V supply, 65 mA max, 0 °C–70 °C, 32-TQFP package.","salesMarkdown":"## Async FIFO for 5 V bus buffering The Cypress CY7C421-15AXC is an asynchronous FIFO with a 512 × 9-bit memory array, designed for unidirectional data buffering. It offers a 15 ns access time and a 50 MHz data rate. ## Retransmit and expansion support The FIFO supports retransmit capability, allowing the read pointer to be reset to the beginning of the stored data without clearing the contents.","metaTitle":"Cypress CY7C421-15AXC Async FIFO, 512x9, 15ns, 50MHz, 32-TQFP","metaDescription":"Cypress CY7C421-15AXC asynchronous FIFO: 512 x 9-bit, 15 ns access time, 50 MHz data rate, 4.5 V–5.5 V supply. Obsolete; sourced to order. Request quote.","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":"Tray","Function":"Asynchronous","Data Rate":"50MHz","Access Time":"15ns","Memory Size":"4.5K (512 x 9)","FWFT Support":"No","Mounting Type":"Surface Mount","Expansion Type":"Depth, Width","Package / Case":"32-TQFP","Product Status":"Obsolete","Bus Directional":"Uni-Directional","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5 V ~ 5.5 V","Base Product Number":"7C421","Operating Temperature":"0°C~70°C","Retransmit Capability":"Yes","Current - Supply (Max)":"65mA","Supplier Device Package":"32-TQFP (7x7)","Programmable Flags Support":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ff2b25f88134e2a3806033ba16d7ff7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C421-15AXC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy CY7C421-15AXC and get a price?","answer":"The CY7C421-15AXC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the closest pin-compatible alternative to CY7C421-15AXC?","answer":"The CY7C421 family shares a common pinout across density options. A higher-density sibling such as the CY7C422 (1K × 9) or CY7C423 (2K × 9) is pin-compatible and may serve as a functional substitute if the larger FIFO depth is acceptable, but this requires verifying the system's addressing and flag logic."},{"question":"What is the operating temperature range for CY7C421-15AXC?","answer":"The CY7C421-15AXC is rated for the commercial temperature range of 0 °C to 70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C421-15AXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C421-15AXC 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}}