{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"KSZ9021GQI","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"KSZ9021GQI","canonicalUrl":"https://icboms.com/microchip/KSZ9021GQI","factsUrl":"https://icboms.com/api/mcp/products/KSZ9021GQI","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology KSZ9021GQI, Gigabit Ethernet transceiver, full-duplex 8/8 driver/receiver, 3.135V–3.465V supply, -40°C to 85°C, 128-PQFP (14x20 mm), tray package.","salesMarkdown":"## Gigabit Ethernet PHY in a 128-PQFP The KSZ9021GQI is a full-duplex Gigabit Ethernet transceiver from Microchip Technology, built for 1000BASE-T copper links. It integrates eight drivers and eight receivers (8/8) in a single 128-PQFP package (14x20 mm), making it a direct-fit PHY for managed switches, industrial Ethernet nodes, and embedded networking modules that need a single-chip physical-layer interface. ## Supply rail and temperature grade Operates from a 3.135V to 3.465V supply — a standard 3.3V rail with ±5% tolerance. The -40°C to 85°C industrial temperature range suits outdoor telecom cabinets, factory-floor controllers, and unventilated enclosures where commercial-grade parts would drift out of spec. ## Active production — no obsolescence risk Microchip lists the KSZ9021GQI as Active. The part is ROHS3 compliant.","metaTitle":"KSZ9021GQI Gigabit Ethernet Transceiver – Microchip","metaDescription":"Microchip KSZ9021GQI Gigabit Ethernet transceiver, full-duplex 8/8 driver/receiver, 3.135V–3.465V supply, -40°C to 85°C, 128-PQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"Type":"Transceiver","Duplex":"Full","Package":"Tray","Protocol":"Gigabit Ethernet","Mounting Type":"Surface Mount","Package / Case":"128-BFQFP","lifecycle_stage":"eol_hot","Voltage - Supply":"3.135V ~ 3.465V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"128-PQFP (14x20)","Number of Drivers/Receivers":"8/8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.57","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.57000","currency":"USD"},{"qty":25,"price":"$6.90000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0ee3e3487827ca62eb38382ccacb3169.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the KSZ9021GQI compatible with 3.3V logic?","answer":"Yes — the supply voltage range is 3.135V to 3.465V, which is a standard 3.3V rail with ±5% tolerance. The I/O levels are 3.3V-compatible, so no level shifters are needed when interfacing with a 3.3V MAC or controller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/KSZ9021GQI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/KSZ9021GQI when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:07:25.082Z","lastPublished":"2026-07-17T20:07:25.082Z","indexable":true}}