{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1339G-133AXIT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1339G-133AXIT","canonicalUrl":"https://icboms.com/infineon/CY7C1339G-133AXIT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1339G-133AXIT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies CY7C1339G-133AXIT SRAM - Synchronous SDR, 4Mbit (128K x 32), 133 MHz, 4 ns access time, Parallel interface, 3.15V–3.6V, -40°C to 85°C, 100-LQFP (14x20), Tape & Reel.","salesMarkdown":"The CY7C1339G-133AXIT is officially listed as Obsolete by Infineon Technologies. No official successor or second-source part number is provided in the product record. ## 4Mbit synchronous SRAM for high-speed cache The CY7C1339G-133AXIT is a 4Mbit synchronous SRAM organized as 128K x 32, clocked at 133 MHz with a 4 ns access time. Operating from a 3.15V to 3.6V supply, it uses a parallel interface and is housed in a 100-LQFP package (14x20 mm). The industrial temperature range (-40°C to 85°C) suits it for networking equipment, base stations, and industrial controllers where a deterministic, low-latency memory buffer is required. ## 133 MHz clock, 4 ns access — the timing budget The 133 MHz clock rate means the memory can sustain a 7.5 ns cycle time; the 4 ns access time is the latency from address to data valid, which determines the wait-state insertion in a CPU or FPGA memory controller. At 133 MHz, the 4 ns access time typically allows zero-wait-state operation in a 133 MHz bus, but the actual margin depends on the controller's setup/hold timing and PCB trace delay. The 128K x 32 organization provides a 32-bit word width per access, making it a natural fit for 32-bit processor buses without external muxing.","metaTitle":"CY7C1339G-133AXIT SRAM 4Mbit 133MHz 100-LQFP","metaDescription":"CY7C1339G-133AXIT SRAM 4Mbit 128Kx32 133MHz 4ns access. Obsolete - sourced to order. Request quote.","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":"Tape & Reel (TR)","Technology":"SRAM - Synchronous, SDR","Access Time":"4 ns","Memory Size":"4Mbit","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":"3.15V ~ 3.6V","Base Product Number":"CY7C1339","Memory Organization":"128K x 32","Operating Temperature":"-40°C ~ 85°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/b16c9cd2314ead72a47480f5946e9b3c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1339G-133AXIT obsolete?","answer":"No official successor is listed."},{"question":"What is the replacement for CY7C1339G-133AXIT?","answer":"No official replacement part number is provided by Infineon. A functionally equivalent synchronous SRAM with the same 128K x 32 organization, 133 MHz clock, 3.3V supply, and 100-LQFP package would be the closest match, but pin compatibility must be verified against the target board."},{"question":"How many pins does CY7C1339G-133AXIT have?","answer":"The CY7C1339G-133AXIT is packaged in a 100-LQFP, which has 100 pins."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1339G-133AXIT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1339G-133AXIT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T01:59:55.202Z","lastPublished":"2026-07-21T01:59:55.202Z","indexable":true}}