{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C433-10JXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C433-10JXC","canonicalUrl":"https://icboms.com/infineon/CY7C433-10JXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C433-10JXC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C series asynchronous FIFO, CY7C433-10JXC, 36K (4K x 9), 50 MHz data rate, 10 ns access time, 4.5-5.5 V supply, 32-PLCC J-lead surface mount, 0°C to 70°C, retransmit capable.","salesMarkdown":"## Async FIFO in a 32-PLCC J-lead — what the 10 ns access means for your bus The CY7C433-10JXC is a 36 Kbit (4 K x 9) asynchronous FIFO from the Cypress CY7C series, now part of the Infineon portfolio. It handles a 50 MHz data rate with a 10 ns access time — the time from read-enable assertion to valid data on the bus. At 50 MHz the cycle period is 20 ns, so the 10 ns access leaves a 10 ns window for the data to settle into the receiving latch before the next clock edge; that margin shrinks if the board trace length or load capacitance adds propagation delay. Infineon lists the CY7C433-10JXC as obsolete. ## Supply rails, temperature grade, and package fit The commercial temperature range (0°C to 70°C) limits it to indoor, non-condensing environments — no automotive or extended industrial use. The 32-PLCC J-lead package (11.43 x 13.97 mm body) is a surface-mount footprint with J-bend leads on a 1.27 mm pitch; the J-lead profile gives a lower seated height than a SOIC but requires a solder-paste stencil aperture sized for the lead geometry. The PLCC socket option exists for prototyping but adds height. ## Functional features: retransmit, no flags, uni-directional This is a first-in-first-out buffer with retransmit capability — the read pointer can be reset to the last programmed retransmit boundary without clearing the entire FIFO, useful for packet retry in a data pipeline. It is uni-directional (separate read and write ports), asynchronous (no external clock needed for the handshake), and expandable in both depth and width by cascading multiple devices. There is no first-word fall-through (FWFT) support and no programmable flag outputs — the only status flags are the standard empty/full pins.","metaTitle":"Infineon CY7C433-10JXC async FIFO, 36K (4Kx9), 50MHz, 10ns","metaDescription":"Infineon CY7C433-10JXC async FIFO, 36K (4K x 9), 50 MHz data rate, 10 ns access, 4.5-5.5 V, 32-PLCC J-lead. 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":{"title":"CY7C433-10JXC","Series":"CY7C","Package":"Tube","Function":"Asynchronous","Data Rate":"50MHz","Access Time":"10ns","Memory Size":"36K (4K x 9)","FWFT Support":"No","Mounting Type":"Surface Mount","Expansion Type":"Depth, Width","Package / Case":"32-LCC (J-Lead)","Bus Directional":"Uni-Directional","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5 V ~ 5.5 V","Base Product Number":"7C433","Operating Temperature":"0°C ~ 70°C","Retransmit Capability":"Yes","Current - Supply (Max)":"85mA","Supplier Device Package":"32-PLCC (11.43x13.97)","Programmable Flags Support":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/29e2525145ef91bf674ce58bf7fd0585.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to CY7C433-10JXC?","answer":"The functional replacement would be another 4 K x 9 asynchronous FIFO in a 32-PLCC package, but pin compatibility must be verified against the specific device datasheet."},{"question":"What is the data rate and access time of CY7C433-10JXC?","answer":"It supports a 50 MHz data rate with a 10 ns access time. The 10 ns figure is the time from read-enable assertion to valid data on the output bus."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C433-10JXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C433-10JXC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:20:23.130Z","lastPublished":"2026-07-21T02:20:23.130Z","indexable":true}}