USB2422I-CP - 2-Port USB 2.0 Hub Controller | Microchip
MPN： USB2422I-CP ✓ 啟用中USB2422I-CP 概覽
A USB hub controller is an interface IC within the broader semiconductor hierarchy of USB interface controllers, interface ICs, and integrated circuits. Its primary function is to manage traffic between an upstream USB host and multiple downstream USB devices. By centralizing port management, enumeration, power-gating, and transaction translation in one controller, an embedded product can expose more USB connectivity than its host processor or system controller would otherwise support.
Microchip identifies the USB2422 as a low-power, single-transaction-translator, 2-port USB 2.0 hub controller intended for embedded USB solutions. The verified manufacturer material confirms support for both full-speed and high-speed USB 2.0 connections. The 24-QFN package keeps the implementation compact for embedded equipment while providing the electrical and thermal characteristics documented in the manufacturer datasheet.
The USB2422 family also provides an SMBus-capable configuration interface, enabling host software or an external controller to configure hub behavior. According to the manufacturer datasheet, the hub conforms to voltage, power, and timing requirements in the SMBus 1.0 Specification 2 for slave-only devices, subject to the exceptions stated in the datasheet. This makes the controller relevant to designs that require configurable USB topology alongside conventional embedded control functions.
Typical uses include industrial HMIs, USB-to-serial equipment, test and measurement systems, embedded computers, printers, and network appliances requiring two downstream USB ports. In these systems, the USB2422 can provide a compact connectivity hub without duplicating USB host-controller logic in the main processor. Product developers still need to validate downstream-port current limits, power-budget requirements, signal routing, and USB compliance in the complete enclosure and cable configuration.
For layout, place the USB differential pairs as short and symmetric as practical, maintain the manufacturer-recommended impedance and spacing, and minimize stubs and unnecessary layer transitions. USB high-speed signals are differential and can be sensitive to discontinuities, so the PCB should use a continuous reference plane beneath the routed pairs. Decoupling, connector placement, chassis grounding, and ESD protection also require system-level review.
This page combines the verified manufacturer description, package information, distributor references, pricing status, and source links with practical selection guidance and explicitly marked data gaps. It also distinguishes the USB2422 from the broader Microchip USB2512B family and explains why a nominal hub-function match is not automatically a verified pin-to-pin replacement.
直接替換替代品，適用於 USB2422I-CP — 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： USB2422I-CP （相同外形與佔位） — 差異在於 Package.
USB2422I/ML
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
USB2422I/MJ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
USB2422I-CP-TR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →USB2422I/MJ-CH
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
USB2422I/ML-CH
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
USB2422I-CP 規格
| Product Type | 2-port USB 2.0 hub controller |
| USB Support | USB full-speed and high-speed |
| Downstream Port Count | 2 ports |
| Architecture | Single transaction translator |
| Intended Use | Embedded USB solutions |
| 封裝 | 24-QFN (4 x 4 mm) |
| 安裝類型 | Surface mount |
| SMBus Version | SMBus 1.0 Specification 2 |
| SMBus Device Role | Slave-only, except as noted in Section 4.3 of the manufacturer datasheet |
USB2422I-CP 24-qfn (4 x 4 mm) 腳位配置指南
USB2422I-CP（24-qfn (4 x 4 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： USB2422I-CP.
請參閱 資料表 以查看完整腳位配置。
典型應用
USB2422I-CP 適用於 6 應用s: Industrial Human-Machine Interfaces, USB Test and Measurement Equipment, Embedded USB-to-Serial Equipment, Network Appliances and Printers, Portable Diagnostic and Monitoring Equipment, Embedded Computing and Peripherals.
Industrial Human-Machine Interfaces
The USB2422I-CP fits an industrial HMI that needs one upstream connection to the host processor and two downstream USB ports for keyboards, touchscreens, barcode readers, or service accessories. Its confirmed support for USB 2.0 full-speed and high-speed operation permits both low-rate peripherals and higher-bandwidth devices to share the hub. The single-transaction-translator architecture keeps the USB topology compact, while the 24-QFN, 4 x 4 mm package supports space-constrained control boards. Before production, verify the controller’s operating-temperature rating, downstream-port power budget, ESD requirements, and industrial EMC performance; these details are not present in the supplied search excerpts.
推薦
USB Test and Measurement Equipment
The USB2422I-CP can provide two downstream USB connections in a test instrument while the measurement engine or embedded controller acts as the USB host. This arrangement suits compact analyzers, programmers, and fixtures that need to connect a control computer with a peripheral, flash programmer, or service interface. USB 2.0 full-speed and high-speed support gives the design a common bus for devices with different transfer capabilities. The 24-QFN footprint reduces board area, but USB signal integrity remains layout-sensitive: route differential pairs continuously over a solid reference plane, avoid stubs, place ESD protection near connectors, and verify compliance in the assembled enclosure.
推薦
Embedded USB-to-Serial Equipment
The USB2422I-CP is appropriate for an embedded USB-to-serial product that exposes two downstream USB ports from a single host-side USB connection. One port may serve a host computer while the other connects to a printer, control module, or configuration interface, reducing the need for multiple hub functions elsewhere on the board. Its confirmed 2-port USB 2.0 hub role and SMBus configuration support make it suitable for software-managed embedded equipment. The implementation must still budget downstream charging current separately from enumeration and data operation, verify the USB2422’s electrical limits in the datasheet, and validate that the complete device remains within applicable industrial, medical, or domestic-product compliance requirements.
推薦
Network Appliances and Printers
A network appliance or embedded printer can use the USB2422I-CP to manage two downstream USB connections while retaining a single upstream link to an embedded Linux or real-time-control system. This is useful for local service interfaces, removable storage, authentication devices, or a printer-side host connection. The confirmed USB 2.0 full-speed and high-speed operation accommodates different endpoint rates, and the 24-QFN package leaves more board area for processing and networking circuitry. In production, the designer should confirm hot-plug behavior, port-current requirements, host compatibility, and enumeration support from the datasheet, because those operating details are not quantified in the verified excerpts.
推薦
Portable Diagnostic and Monitoring Equipment
The USB2422I-CP can organize two USB connections in a portable diagnostic instrument that connects to a laptop or service tablet through one upstream port. The second downstream port can be used for a probe interface, sensor, secure media device, or calibration accessory. Its low-power positioning and compact 24-QFN package align with portable embedded equipment, while full-speed and high-speed support allows the hub to coexist with devices using either USB 2.0 operating mode. The final design still needs an appropriate power source, connector protection, and verified operating-temperature range. Check cable length, bus-power loading, and host-driver support at the system level rather than assuming all USB peripherals will behave identically through a hub.
推薦
Embedded Computing and Peripherals
The USB2422I-CP is suitable for an embedded-computing platform that needs to add a compact two-port USB hub to an existing host controller. It can organize connections to a keyboard, storage device, service connector, or USB-to-serial adapter without giving every peripheral a separate root port. The manufacturer describes the part as low-power and expressly intended for embedded USB solutions, making it relevant to compact control boards and embedded appliances. The SMBus interface can support controlled configuration by a system controller, subject to the exceptions in the manufacturer datasheet. Before schematic capture, engineers should obtain the complete pinout, electrical limits, and timing information rather than deriving connections from distributor package thumbnails.
推薦
推薦產品摘要
工程參考資料，適用於 USB2422I-CP — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | USB2422I/ML | USB2422I/MJ | USB2422I-CP-TR | USB2422I/MJ-CH | USB2422I/ML-CH |
|---|---|---|---|---|---|---|
| Package | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Hub Port Count | 2 downstream ports | 2 downstream ports | 2 downstream ports | 2 downstream ports | 2 downstream ports | 2 downstream ports |
| USB Version | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 |
| Supported USB Speeds | Full-speed and high-speed | Full-speed and high-speed | Full-speed and high-speed | Full-speed and high-speed | Full-speed and high-speed | Full-speed and high-speed |
| Transaction Translator | Single transaction translator | Single transaction translator | Single transaction translator | Single transaction translator | Single transaction translator | Single transaction translator |
| SMBus Configuration | SMBus 1.0 Specification 2 slave-only, subject to datasheet exceptions | SMBus 1.0 Specification 2 slave-only, subject to datasheet exceptions | SMBus 1.0 Specification 2 slave-only, subject to datasheet exceptions | SMBus 1.0 Specification 2 slave-only, subject to datasheet exceptions | SMBus 1.0 Specification 2 slave-only, subject to datasheet exceptions | SMBus 1.0 Specification 2 slave-only, subject to datasheet exceptions |
| Special Ordering Attribute | USB2422I-CP | I/ML ordering code | I/MJ ordering code | CP device with tape-and-reel suffix | I/MJ device with CH ordering suffix | I/ML device with CH ordering suffix |
主要差異化特點
- Purpose-built two-port embedded hub topology (對比USB2512B)
- Compact 24-QFN implementation (對比USB2512B)
- SMBus-controlled embedded configuration (對比Generic USB hub alternatives)
設計說明
Route USB high-speed differential pairs as short, matched, and continuous paths over a solid reference plane. Avoid stubs, unnecessary vias, plane splits, and abrupt impedance changes; the verified material does not provide the controller’s complete layout requirements, so use the Microchip datasheet and evaluation-board guidance for trace geometry, impedance, and connector placement.
Separate USB data correctness from downstream power budgeting. The verified excerpts confirm a 2-port USB 2.0 hub role but do not quantify port-current limits, so verify upstream-current capacity, switch-control limits, inrush behavior, and power-source requirements against the official datasheet before calculating connector or supply capacity.
Do not treat a hub-function match as proof of a drop-in replacement. USB2512B is functionally related, but the supplied results do not verify identical package, pinout, configuration, or electrical limits. Conversely, USB2422 ordering-code variants should be selected only after checking the Microchip ordering table for temperature, qualification, packing, and marking-code differences.
Place USB connector ESD protection close to the connector and route protection-return current directly to the appropriate ground reference. Keep switching regulators and high-current power paths away from differential USB traces. These measures reduce radiated emissions and susceptibility, but final EMC performance must be established through pre-compliance testing on the completed product.
合規資訊
The verified excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The manufacturer datasheet confirms SMBus 1.0 Specification 2 conformance for slave-only devices, subject to the exception documented in Section 4.3.
