{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1383D-133AXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1383D-133AXC","canonicalUrl":"https://icboms.com/infineon/CY7C1383D-133AXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1383D-133AXC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1383D-133AXC, 18Mbit synchronous SDR SRAM, 1M x 18 organization, 133 MHz clock, 6.5 ns access time, parallel interface, 3.135V–3.6V supply, 0°C–70°C, 100-TQFP (14x20), tray.","salesMarkdown":"## 18 Mbit synchronous SRAM for high-throughput buffering The Infineon CY7C1383D-133AXC is a 18 Mbit synchronous SDR SRAM organized as 1M x 18, clocked at 133 MHz with a 6.5 ns access time. It uses a parallel interface and operates from a 3.135V to 3.6V supply. ## 133 MHz clock and 6.5 ns access — timing budget for the bus At 133 MHz the clock period is roughly 7.5 ns, and the 6.5 ns access time leaves about 1 ns of margin for PCB trace delay, clock skew, and setup/hold at the controller. That is tight — you will want to verify timing closure with the memory controller's AC timing specs, especially if the board has more than one load on the data bus. The synchronous SDR architecture eliminates the dead cycles of asynchronous SRAM on back-to-back reads, which is why this part was common in packet buffers and FIFO emulation. It belongs in office-environment switches, test equipment, or server motherboards — not in a motor drive enclosure or outdoor cabinet. If your BOM calls for industrial temperature, look at the -133AXI variant (if still available) or a pin-compatible synchronous SRAM that carries the -I suffix. That means new production has stopped and the only channel is surplus or broker inventory. Every lot we source is date-code and marking verified against Infineon's factory etch standards.","metaTitle":"CY7C1383D-133AXC Infineon 18Mbit SDR SRAM, 133 MHz, 100-TQFP","metaDescription":"CY7C1383D-133AXC synchronous SRAM, 18Mbit (1M x 18), 133 MHz clock, 6.5 ns access time, 100-TQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tray","Technology":"SRAM - Synchronous, SDR","Access Time":"6.5 ns","Memory Size":"18Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"100-LQFP","Product Status":"Obsolete","Clock Frequency":"133 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"3.135V ~ 3.6V","Base Product Number":"CY7C1383","Memory Organization":"1M x 18","Operating Temperature":"0°C~70°C(TA)","Supplier Device Package":"100-TQFP (14x20)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4a55a438051b158d7f6fb3b7b5ccb210.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1383D-133AXC obsolete?","answer":"Yes, Infineon lists the CY7C1383D-133AXC as Obsolete. New production has ceased; available stock is limited to surplus and broker-channel inventory. We source verified lots against RFQ, with date-code and marking authentication."},{"question":"What is the replacement for CY7C1383D-133AXC?","answer":"Infineon has not published an official replacement for this order code. For a pin-compatible synchronous SRAM in the same 100-TQFP footprint, check the CY7C1383 family variants with the same base number — but confirm the clock speed and temperature grade match your design. We can help cross-reference against your BOM requirements on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1383D-133AXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1383D-133AXC 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}}