{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C144-55JXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C144-55JXCT","canonicalUrl":"https://icboms.com/infineon/CY7C144-55JXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C144-55JXCT","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C144-55JXCT, SRAM - Dual Port, Asynchronous, 64Kbit (8K x 8), Parallel interface, 55 ns access time, 4.5V ~ 5.5V supply, 68-PLCC, 0°C ~ 70°C, Tape & Reel.","salesMarkdown":"## 55 ns access time — timing budget reality The 55 ns access time is symmetrical for read and write cycles, with the write cycle time also rated at 55 ns. This means the part can sustain a single-cycle read or write every 55 ns, or about 18 MHz bus throughput in a zero-wait-state system. For a dual-port part, the access time also sets the arbitration latency—both ports must respect the same timing when contending for the same address. If your system has a faster bus clock, you will need to insert wait states or look at a faster dual-port SRAM. ## 68-PLCC package — footprint and rework notes The 68-PLCC (J-Lead) package has a body size of 24.23 mm x 24.23 mm. J-Lead packages are less common in new designs but are still encountered in legacy telecom and industrial boards. Rework requires a hot-air tool with a PLCC nozzle; the leads are hidden under the package body, so inspection after soldering is visual from the side rather than automated optical. The CY7C144-55JXCT is marked as Obsolete by the manufacturer. This means the part is no longer in production, and any remaining stock is limited to what exists in distribution channels—new-old-stock or surplus. For a BOM that requires this exact part, the only sourcing path is through independent distributors who hold inventory or can locate it from their networks. There is no factory lead time to rely on. ## Temperature grade limits application scope This part is not rated for industrial (-40°C to 85°C) or automotive environments. If your system sees temperature excursions below freezing or above 70°C ambient, this part is outside its specified range and should not be used without qualification testing.","metaTitle":"CY7C144-55JXCT 64Kbit Dual-Port SRAM, 55 ns, Obsolete","metaDescription":"CY7C144-55JXCT is a 64Kbit (8K x 8) dual-port asynchronous SRAM with 55 ns access time. Obsolete.","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 - Dual Port, Asynchronous","Access Time":"55 ns","Memory Size":"64Kbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"68-LCC (J-Lead)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"CY7C144","Memory Organization":"8K x 8","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"68-PLCC (24.23x24.23)","Write Cycle Time - Word, Page":"55ns"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2f91f8498932cd41216b0f439ddb9355.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C144-55JXCT obsolete?","answer":"Yes, the CY7C144-55JXCT is listed as Obsolete by Cypress. It is no longer in production."},{"question":"What is the replacement for CY7C144-55JXCT?","answer":"For a drop-in replacement, you would need to evaluate pin-compatible dual-port SRAMs from other vendors (e.g., IDT, Renesas) with the same 68-PLCC footprint, 5V supply, and 55 ns or faster access time. Alternatively, consider a redesign using a newer dual-port or FIFO memory in a more available package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C144-55JXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C144-55JXCT 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}}