{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4231-15AXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4231-15AXC","canonicalUrl":"https://icboms.com/infineon/CY7C4231-15AXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C4231-15AXC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C4231-15AXC, Series CY7C, synchronous FIFO, 18K (2K x 9), 66.7 MHz data rate, 10 ns access time, 4.5 V to 5.5 V supply, 32-TQFP (7x7), 0°C to 70°C.","salesMarkdown":"## Sync FIFO for 5 V datapath buffering The Cypress CY7C4231-15AXC is a synchronous FIFO with a 2K x 9 memory array, clocked at 66.7 MHz and delivering a 10 ns access time. It operates from a 4.5 V to 5.5 V supply on a 32-TQFP (7x7) surface-mount package, rated for 0°C to 70°C commercial temperature range. Depth and width expansion are supported; programmable flags and a uni-directional bus round out the control interface. ## 66.7 MHz synchronous clock — timing margin for the datapath The 66.7 MHz data rate and 10 ns access time define the throughput and read latency. The 2K x 9 depth (18 Kbits) suits moderate packet buffering. ## Obsolete — sourcing and replacement planning","metaTitle":"Cypress CY7C4231-15AXC 18K Sync FIFO, 66.7MHz","metaDescription":"Cypress CY7C4231-15AXC synchronous FIFO, 18K (2K x 9), 66.7 MHz data rate, 10 ns access time, 32-TQFP. 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":"18K (2K 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":"7C4231","Operating Temperature":"0°C ~ 70°C","Retransmit Capability":"No","Current - Supply (Max)":"35mA","Supplier Device Package":"32-TQFP (7x7)","Programmable Flags Support":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.8500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a7b146673824ba494f9688cebdc79959.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C4231-15AXC/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to CY7C4231-15AXC?","answer":"No official pin-compatible successor is documented for the CY7C4231-15AXC. Designers should evaluate the active Cypress CY7C42xxx synchronous FIFO family, verifying package, supply voltage, and timing compatibility."},{"question":"What is CY7C4231-15AXC used for?","answer":"The CY7C4231-15AXC is a synchronous FIFO buffer used for temporary data storage and rate-matching in digital systems, typically in telecom, datacom, or DSP datapaths operating at 5 V logic levels."},{"question":"What compliance documentation is available for CY7C4231-15AXC?","answer":"The part is listed as RoHS-compliant per the Cypress product line. Specific REACH, UL, or IEC declarations should be requested at quote time from the supplier."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4231-15AXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4231-15AXC 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}}