KSZ9021GN - 1000Mbps Gigabit Ethernet Transceiver | Microchip
N.º da peça: KSZ9021GN ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.4905 | $5,49 |
| 10 | $5.4905 | $54,91 |
| 100 | $5.4905 | $549,05 |
| 500 | $5.4905 | $2.745,25 |
| 1.000 | $5.4905 | $5.490,50 |
KSZ9021GN Visão geral
A Gigabit Ethernet transceiver is an interface IC that integrates transmit and receive functions for high-speed Ethernet equipment. Within the network hierarchy, it connects a digital MAC or processor interface to the physical Ethernet layer. GMII provides a parallel high-speed digital interface, while MII supports lower-speed legacy Ethernet operation. The KSZ9021GN combines these functions in a surface-mount QFN package intended for compact industrial and communications equipment.
According to the supplied search data, the KSZ9021GN conforms to the auto-negotiation protocol defined in Clause 28 of the IEEE 802.3 Specification. Auto-negotiation allows unshielded twisted-pair link partners to select their highest common operating mode. The available specifications also identify GMII and MII interface types, a 1 Gbps data rate, 3.3 V supply operation, and a 0°C to +70°C ambient temperature range. The manufacturer lists the part in a lead-free 64-pin QFN package.
The transceiver is suitable for network switches, routers, industrial Ethernet controllers, embedded gateways, and test equipment requiring a conventional parallel Ethernet interface. Its 3.3 V supply requirement should be coordinated with the system power rails and the digital interface voltage levels. Because the supplied data does not provide complete electrical limits, pin-level descriptions, package dimensions beyond the 8 mm by 8 mm indication, or detailed timing figures, those values must be confirmed against the Microchip datasheet before layout or production use.
For PCB implementation, preserve the manufacturer's recommended QFN land pattern, thermal-pad connection, high-speed trace routing, and decoupling arrangement. The exposed-pad and ground-return strategy is particularly important in a gigabit interface because return-path discontinuities can degrade signal integrity. Keep the Ethernet differential pairs away from noisy switching nodes and provide a controlled reference plane beneath the transceiver and associated magnetics.
This page combines the verified distributor and manufacturer references with practical selection and integration guidance. Pricing, alternate cross-reference data, and application-specific companion parts are included only where the supplied sources support them; unverified engineering details are explicitly identified for follow-up rather than guessed.
Alternativas drop-in para KSZ9021GN — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com KSZ9021GN (mesmo formato e footprint) — diferindo em Auto-Negotiation, Data Rate, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
KSZ9021RNI
✅ Drop-In✓ Em estoque
$5.12 / unidade
Ver ficha técnica →KSZ9021GN Especificações
| Product Type | Full-duplex Gigabit Ethernet transceiver |
| Taxa de dados | 1000 Mbps |
| Tipo de interface | GMII and MII |
| Tensão de alimentação | 3.3 V |
| Faixa de temperatura de operação | 0°C to +70°C |
| Encapsulamento | 64-pin QFN, 8 mm x 8 mm |
| Tipo de montagem | Surface mount |
| Ethernet Support | Gigabit Ethernet |
| Duplex Mode | Full duplex |
| Auto-Negotiation | IEEE 802.3 Clause 28 |
| Transceiver Configuration | 8/8 transceiver |
| Lead-Free Package | Lead-free QFN package |
| Manufacturer | Microchip Technology |
Guia de Configuração de Pinos do KSZ9021GN lead-free qfn package
Configuração de pinos para KSZ9021GN (pacote lead-free qfn package). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para KSZ9021GN.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
KSZ9021GN é adequado para 6 aplicaçãos: Gigabit Ethernet Network Switch, Industrial Ethernet Gateway, Embedded Router and Gateway, Ethernet Test and Measurement Equipment, Industrial Control Cabinet Ethernet Interface, Network Interface Card and Adapter.
Gigabit Ethernet Network Switch
The KSZ9021GN fits a network-switch design that needs a 1000 Mbps Ethernet physical interface with GMII or MII connectivity. Its 3.3 V supply and 64-pin QFN package allow the transceiver to be placed near the board edge and connected to a network transformer or approved Ethernet magnetics. The verified IEEE 802.3 Clause 28 auto-negotiation support helps link partners select a common operating mode over compatible unshielded twisted-pair links. Layout should follow the manufacturer's QFN land pattern and preserve continuous return paths for high-speed signals.
Recomendado
Industrial Ethernet Gateway
An industrial gateway can use the KSZ9021GN to provide a Gigabit Ethernet endpoint when its control logic requires a conventional parallel interface. The 1000 Mbps data rate supports high-volume network traffic, while GMII and MII provide interface options for different controller capabilities. The 0°C to +70°C operating range matches the supplied commercial-temperature specification. Because the device is a surface-mount QFN, the design must account for connector placement, isolation requirements, thermal management, and the high-speed relationship between the transceiver, magnetics, and controller.
Recomendado
Embedded Router and Gateway
The KSZ9021GN is suitable for an embedded router or gateway that must expose a wired Gigabit Ethernet port through GMII or MII. Its 1000 Mbps capability can support local network aggregation, configuration transfer, and management traffic without the bandwidth constraint associated with a 100 Mbps-only interface. The 3.3 V operating supply must be reconciled with the processor I/O voltage and power sequencing. Place the transceiver near the Ethernet connector, isolate the digital and network domains according to the system safety requirements, and validate signal integrity across the complete PCB stack-up.
Recomendado
Ethernet Test and Measurement Equipment
The KSZ9021GN can serve as the Gigabit Ethernet interface in test equipment that measures link behavior, traffic, or protocol connectivity. A 1000 Mbps transceiver provides a standard Ethernet endpoint for instrumentation and manufacturing systems, while GMII and MII offer configuration flexibility. The commercial-temperature specification of 0°C to +70°C is relevant for controlled lab and factory environments. Use controlled impedance routing, short return paths, and properly terminated magnetics to maintain signal integrity, and consult the manufacturer data sheet for exact timing, pin, and electrical details before instrument release.
Recomendado
Industrial Control Cabinet Ethernet Interface
The KSZ9021GN can provide a wired Gigabit Ethernet connection in a compact industrial control enclosure when the system requires higher bandwidth than 100 Mbps. Its 1000 Mbps capability is useful for diagnostics, data logging, remote control, and machine-to-machine traffic. The 3.3 V supply and 64-pin QFN package require careful power and thermal planning, while the 0°C to +70°C range should be checked against the cabinet's worst-case internal temperature. The final design should include compliant isolation or protection circuits where required by the application and safety environment.
Recomendado
Network Interface Card and Adapter
The KSZ9021GN is appropriate for a custom network interface card or adapter that exposes a Gigabit Ethernet port through a parallel controller interface. The verified 64-pin QFN package supports dense board construction, and the 1000 Mbps data rate is suitable for data transfer, storage networking, and workstation peripherals. The board designer must provide the required Ethernet magnetics or approved coupling network, controlled-impedance differential routing, local decoupling, and a stable 3.3 V rail. Confirm pin assignments and package details directly from the Microchip data sheet before releasing the schematic or PCB files.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para KSZ9021GN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | KSZ9021RN |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | QFN-64, 8 mm x 8 mm | QFN-64; exact package details require verification |
Principais diferenciais
- Verified 1000 Mbps Ethernet operation (vs KSZ9021RN)
- GMII and MII interface support (vs KSZ9021RN)
- Documented commercial-temperature range (vs KSZ9021RN)
- Package-specific design continuity (vs KSZ9021RN)
Notas de projeto
Use the Microchip-recommended QFN land pattern and verify exposed-pad, solder-mask, paste, and thermal-via requirements before layout release. Keep the transceiver and Ethernet magnetics close to the board connector where possible. Maintain a continuous ground reference beneath the high-speed interface and avoid split-plane transitions that can create return-path discontinuities and increase radiated emissions.
Provide a stable 3.3 V rail and place local decoupling close to the transceiver supply pins according to the manufacturer layout guidance. The verified data confirms the nominal supply voltage but does not provide current consumption, tolerance, sequencing, or ripple limits. Review the complete Microchip data sheet before selecting capacitors or defining the power-tree budget.
Route Ethernet differential pairs as controlled-impedance traces with continuous reference planes and minimize discontinuities, stubs, and unnecessary vias. Keep noisy switching nodes and high-current return paths away from the GMII or MII interface and transceiver analog sections. Validate eye quality, timing, radiated emissions, and conducted emissions on the final PCB because the supplied data does not include complete timing or layout tables.
Do not substitute a same-family Ethernet transceiver solely because it is marketed as an equivalent. The supplied comparison identifies KSZ9021RNI as QFN-48 while KSZ9021GN is QFN-64, demonstrating that a package mismatch can prevent a true drop-in replacement. Confirm pinout, package dimensions, electrical limits, interface mode, and thermal performance in the manufacturer documentation before substitution.
The verified operating-temperature specification is 0°C to +70°C, but junction temperature and power dissipation data are not included in the supplied search results. Estimate device dissipation from the actual supply current and operating conditions only after obtaining those values from the Microchip data sheet. Use the exposed pad and copper area as directed by the manufacturer, then verify temperature rise in the assembled enclosure.
Informações de conformidade
The Microchip product result identifies the KSZ9021GN as a lead-free QFN package. The supplied search data does not establish RoHS, REACH, halogen-free, conflict-minerals, or automotive qualification status.
