{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C4211-15JXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C4211-15JXCT","canonicalUrl":"https://icboms.com/infineon/CY7C4211-15JXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C4211-15JXCT","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C series synchronous FIFO, CY7C4211-15JXCT, 4.5K (512 x 9) memory, 66.7MHz data rate, 10ns access time, 4.5 V ~ 5.5 V supply, 0°C~70°C, 32-PLCC (J-Lead) on tape and reel.","salesMarkdown":"## Synchronous FIFO in a 32-PLCC footprint — what this part is The Cypress CY7C4211-15JXCT is a synchronous FIFO memory from the CY7C series, organized as 512 words by 9 bits for a total of 4.5 Kbits of storage. The part is designed for surface-mount assembly in a 32-lead PLCC J-Lead package (supplier device package 32-PLCC at 11.43x13.97 mm) and supports depth and width expansion for scaling buffer capacity. ## 66.7 MHz synchronous operation and 10 ns access — timing budget fit The 66.7 MHz maximum clock rate and 10 ns access time define the timing envelope for this FIFO. In a synchronous system, the 10 ns access means the first word appears on the output bus within 10 ns of the read clock edge, which sets the setup-and-hold budget for the receiving logic. The 66.7 MHz data rate supports sustained throughput of 66.7 million words per second, assuming back-to-back reads with no dead cycles. For designs running at lower clock rates, the margin on access time relaxes accordingly, but the part is not rated for asynchronous (free-running) read operations — the synchronous clock must be present. ## 512 x 9 organization and expansion options The 512-word depth by 9-bit width organization is a common FIFO configuration for 8-bit data paths with a parity or control bit. The 9th bit is often used as a data-valid flag, a parity bit, or a sideband control signal. Depth and width expansion are supported, meaning multiple CY7C4211 devices can be cascaded to create deeper or wider buffers — depth expansion chains FIFOs in series, while width expansion connects them in parallel with common control signals. The part includes programmable flags (almost-full, almost-empty thresholds) for flow control, but does not support retransmit or FWFT (First-Word Fall-Through) operation. Cypress (now part of Infineon) no longer manufactures this specific ordering code in production volumes. Buyers should verify date code and condition requirements with their sourcing desk, as obsolete FIFOs on the spot market may carry mixed date codes or be sourced from inventory buyouts.","metaTitle":"Cypress CY7C4211-15JXCT Synchronous FIFO, 66.7MHz","metaDescription":"Cypress CY7C4211-15JXCT synchronous FIFO memory, 4.5K (512 x 9), 66.7MHz data rate, 10ns 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":"Tape & Reel (TR)","Function":"Synchronous","Data Rate":"66.7MHz","Access Time":"10ns","Memory Size":"4.5K (512 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":"4.5 V ~ 5.5 V","Base Product Number":"7C4211","Operating Temperature":"0°C~70°C","Retransmit Capability":"No","Current - Supply (Max)":"35mA","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/3e0a4842c41a8f06c02d8bb2419fe6f1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C4211-15JXCT obsolete?","answer":"Yes, the CY7C4211-15JXCT is listed as obsolete. Cypress (Infineon) no longer produces this ordering code in active manufacturing."},{"question":"What is the replacement for CY7C4211-15JXCT?","answer":"For a pin-compatible drop-in, designers should evaluate other synchronous FIFOs in the CY7C42xx family with the same 32-PLCC footprint and 5 V supply, but verify timing and flag behavior against the original datasheet. For new designs, consider migrating to a more current FIFO family or an FPGA-based FIFO implementation."},{"question":"Can CY7C4211-15JXCT be used as a replacement for CY7C4211-15JXC?","answer":"The CY7C4211-15JXCT and CY7C4211-15JXC share the same base part number and electrical specifications. The suffix difference indicates packaging and shipping medium: the JXCT variant is supplied on Tape & Reel (TR), while the JXC variant typically ships in tubes or trays. Electrically they are identical, so the JXCT can serve as a functional replacement for the JXC in a design that accepts tape-and-reel packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C4211-15JXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C4211-15JXCT 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}}