USB2422-I/MJ - 2-Port USB 2.0 Hub Controller | Microchip
MPN： USB2422-I/MJ ✓ 啟用中USB2422-I/MJ 概覽
A USB hub controller is an interface IC that manages one upstream USB connection and multiple downstream USB ports. Within the broader hierarchy of USB interface controllers, the USB2422 combines port routing, power-switch control, overcurrent protection, internal voltage regulation, and USB signal conditioning in one compact device for embedded systems.
The part includes BC1.1 protocol support, downstream port power-switch control, overcurrent protection, an internal regulator, and ESD protection. Required USB port resistors are integrated, including D+ and D- series-termination resistors and the specified pull-down or pull-up resistors. Internal pull-ups are also provided for downstream overcurrent-sense inputs, reducing external component count.
Its single-translation-translator architecture serves embedded USB applications in which low power, compactness, and upstream-device integration matter more than independent simultaneous translation on every downstream port. The device can therefore support compact host ports in equipment that otherwise lacks native USB hub routing.
Typical uses include industrial control panels, medical equipment, printers, embedded test systems, set-top boxes, and other USB 2.0 equipment requiring two downstream connections. Applications should account for the hub's single-translator architecture and verify downstream-device compatibility before final system release.
PCB implementation should preserve the manufacturer's recommended USB trace geometry, place decoupling and support components near their associated pins, and route differential D+ and D- paths as a matched pair. USB signal integrity depends on controlled impedance, minimized stubs, and uninterrupted return-path continuity across the connector, controller, and protection circuitry.
直接替換替代品，適用於 USB2422-I/MJ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： USB2422-I/MJ （相同外形與佔位） — 差異在於 Supported Downstream Speeds.
此產品無可直接替換的替代品。
申請替代品USB2422-I/MJ 規格
| Product Type | 2-port USB 2.0 hub controller |
| Number of Downstream Ports | 2 ports |
| Upstream Port Configuration | Hi-Speed and Full-Speed hub, or Full-Speed-only hub |
| Supported Downstream Speeds | Low-Speed, Full-Speed, and Hi-Speed |
| USB Version | USB 2.0 |
| 供應電壓 | 3.3 V |
| Transaction Translator Architecture | Single transaction translator |
| Battery Charging Protocol | BC1.1 protocol support |
| Port Power Switch Control | Supported |
| Downstream Power Switch | Supported |
| 過電流保護 | Supported |
| Internal Voltage Regulator | Supported |
| ESD Protection | Supported |
| Integrated USB Port Resistors | D+ and D- series termination, pull-down, and pull-up resistors integrated |
| Overcurrent Sense Input Pull-Ups | Internal pull-up resistors |
| 封裝 | 24-QFN, 4x4 mm |
| 安裝類型 | Surface mount |
USB2422-I/MJ 24-qfn, 4x4 mm 腳位配置指南
USB2422-I/MJ（24-qfn, 4x4 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： USB2422-I/MJ.
請參閱 資料表 以查看完整腳位配置。
典型應用
USB2422-I/MJ 適用於 6 應用s: Industrial Control Panels, Medical and Diagnostic Equipment, Embedded Test and Measurement Systems, Printers and Document Peripherals, Set-Top and Media Accessories, USB-Enabled Service Equipment.
Industrial Control Panels
The Microchip USB2422-I/MJ is suitable for industrial control panels that need two USB 2.0 downstream connections from one host interface. Its 24-QFN 4x4 mm package preserves board area, while integrated D+ and D- resistors reduce external USB termination-component count. Port power-switch control and overcurrent protection support practical downstream-port management. The single transaction translator should be accepted only after confirming that connected peripheral traffic does not require simultaneous independent downstream translation.
推薦
Medical and Diagnostic Equipment
The USB2422-I/MJ can add two USB 2.0 ports to compact medical or diagnostic equipment without requiring a larger external hub assembly. Integrated port resistors, ESD protection, overcurrent protection, and downstream power-switch control reduce the number of discrete support elements around the hub controller. The 4x4 mm 24-QFN footprint is valuable where several peripherals must fit into a restricted enclosure. Validation should include electrical safety, EMC, and application-specific USB compatibility checks.
推薦
Embedded Test and Measurement Systems
The USB2422-I/MJ is useful in compact test fixtures where a host must connect to two USB peripherals through one upstream port. Its single-translator implementation and integrated USB resistors simplify routing, while port power-switch control and overcurrent protection improve controllability during peripheral attachment. For concurrent high-bandwidth instruments, evaluate the single-translator limitation or select a multiple-translator hub controller based on measured traffic requirements.
推薦
Printers and Document Peripherals
The USB2422-I/MJ can provide dual downstream connectivity in printers, scanners, and document-processing peripherals that accept USB accessories. Its two-port USB 2.0 hub function, integrated USB port resistors, and internal power-management blocks reduce external circuitry and board area. Because the controller uses one transaction translator, firmware and peripheral compatibility should be tested for simultaneous traffic. The package also supports compact embedded implementations where connector access is constrained.
推薦
Set-Top and Media Accessories
The USB2422-I/MJ is appropriate for set-top boxes and media accessories that need to expose two USB ports to keyboards, storage, or service peripherals. Its low-power USB hub implementation and 24-QFN 4x4 mm package support compact boards, while integrated port resistors simplify USB routing. A single upstream connection gives the system a clear USB topology, and downstream power-switch control provides the basis for controlled port power management in cost-sensitive consumer equipment.
推薦
USB-Enabled Service Equipment
The USB2422-I/MJ can add service and diagnostic USB connectivity to networking, laboratory, or maintenance equipment without duplicating a complete host controller. Two downstream ports permit service-tool and peripheral connections through one upstream interface. Integrated port resistors, ESD protection, overcurrent protection, and a 24-QFN footprint help reduce board complexity. Product developers should verify USB enumeration behavior, power budget, and simultaneous device traffic in the final embedded firmware configuration.
推薦
推薦產品摘要
工程參考資料，適用於 USB2422-I/MJ — 比較、設計指引及合規資訊。
選型指南
設計說明
Route each USB D+ and D- pair as a matched, continuous differential pair using the PCB stack-up and geometry specified by the manufacturer data sheet. Minimize stubs, test-point branches, and layer transitions between the USB2422-I/MJ, protection components, and connectors. Keep return paths continuous across plane splits and provide a low-impedance ground connection to every ground pin and the exposed pad.
Follow the manufacturer's regulator, capacitor, port-power-switch, and overcurrent-sense recommendations exactly. The verified data confirms an internal regulator, downstream power-switch control, and overcurrent protection, but it does not supply all capacitor values or current thresholds. Use the complete data sheet for those values and verify the downstream power budget for every supported Low-Speed, Full-Speed, and Hi-Speed attachment.
Do not assume that every two-port USB 2.0 hub has the same translator architecture. USB2422-I/MJ uses one transaction translator, while devices such as USB2512B use multiple translators for parallel downstream activity. Validate simultaneous enumeration, sustained transfers, suspend behavior, and hot-plug recovery with the actual peripheral set to avoid selecting a topology that becomes a throughput bottleneck.
Place input and output decoupling capacitors and any external USB protection components close to their associated USB2422-I/MJ pins. Use the manufacturer's 24-QFN land pattern, including the exposed-pad connection and paste pattern, rather than creating a generic QFN footprint. Preserve copper around the exposed pad for heat spreading and verify assembly clearances for the small 4x4 mm body.
合規資訊
The supplied verified snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this orderable MPN.
