{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4255-15AXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4255-15AXC","canonicalUrl":"https://icboms.com/infineon/CY7C4255-15AXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C4255-15AXC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C4255-15AXC, Series CY7C, Synchronous FIFO, 144K (8K x 18), Data Rate 66.7MHz, Access Time 10ns, 4.5 V ~ 5.5 V, 64-LQFP, 0°C~70°C.","salesMarkdown":"## Retransmit and programmable flags — flow control without glue logic Retransmit capability lets the read pointer reset to the last programmed mark, useful for retrying a corrupted packet without flushing the entire FIFO. Programmable almost-full and almost-empty flags trigger interrupts at user-defined thresholds, offloading the host controller from polling the status. Together these features eliminate external counter and comparator ICs on the flag logic. The commercial temperature grade restricts this part to controlled indoor environments — office telecom, lab instruments, server racks. Not rated for industrial motor drives, outdoor base stations, or automotive under-hood use without active thermal management.","metaTitle":"Cypress CY7C4255-15AXC Synchronous FIFO, 144K (8K x 18), 66.7MHz, 10ns","metaDescription":"Cypress CY7C4255-15AXC synchronous FIFO memory, 144K (8K x 18), 66.7 MHz data rate, 10 ns access time, 64-LQFP, 0°C–70°C. Obsolete — sourced to order against RFQ.","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":"Synchronous","Data Rate":"66.7MHz","Access Time":"10ns","Memory Size":"144K (8K x 18)","FWFT Support":"No","Mounting Type":"Surface Mount","Expansion Type":"Depth, Width","Package / Case":"64-LQFP","Product Status":"Obsolete","Bus Directional":"Uni-Directional","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5 V ~ 5.5 V","Base Product Number":"7C4255","Operating Temperature":"0°C~70°C","Retransmit Capability":"Yes","Current - Supply (Max)":"45mA","Supplier Device Package":"64-TQFP (14x14)","Programmable Flags Support":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.9400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/82320e3a50f77c26c627df5e0f5968f8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C4255-15AXC/alternatives.json"},"ai":{"faq":[{"question":"Is CY7C4255-15AXC obsolete?","answer":"Yes, the CY7C4255-15AXC is officially obsolete per Cypress's lifecycle status."},{"question":"What is the replacement for CY7C4255-15AXC?","answer":"No official replacement has been announced by Cypress for this specific speed grade and package. For a pin-compatible alternative within the CY7C family, consult the Cypress FIFO cross-reference guide — but confirm timing and flag compatibility against your design's timing budget."},{"question":"Where can I buy CY7C4255-15AXC?","answer":"CY7C4255-15AXC is sourced through independent distribution. Submit an RFQ for current availability and pricing — stock is verified surplus with date-code checks."},{"question":"What are the specifications of CY7C4255-15AXC?","answer":"Synchronous FIFO, 144K (8K x 18), 66.7 MHz data rate, 10 ns access time, 4.5 V to 5.5 V supply, 64-LQFP, 0°C to 70°C operating temperature, 45 mA max supply current, retransmit and programmable flags supported."},{"question":"Does CY7C4255-15AXC have a pinout compatible with other FIFOs?","answer":"The CY7C4255-15AXC uses the standard Cypress synchronous FIFO pinout in the 64-LQFP package, which is shared across multiple density and speed variants in the CY7C family. Verify pin compatibility against the specific alternate part's datasheet before layout reuse."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4255-15AXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4255-15AXC 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}}