USB2422/MJ - 2-Port USB 2.0 Hub Controller | Microchip
Teilenummer: USB2422/MJ ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.4655 | $1,47 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
USB2422/MJ Übersicht
A USB hub controller is an interface integrated circuit that manages traffic between one upstream USB host connection and multiple downstream ports. Within the USB interface hierarchy, it belongs to the class of USB controllers and hub-controller devices used to expand USB connectivity in embedded systems. Unlike a host-controller interface that directly manages a host bus, the USB2422/MJ translates USB traffic for attached downstream devices and centralizes hub functions.
The verified product information identifies the USB2422 as a two-port USB 2.0 Hi-Speed hub controller. Microchip states that all required USB-port resistors are integrated, including the series termination resistors and the required pull-down and pull-up resistors on D+ and D- pins. The downstream-port over-current sense inputs also have internal pull-up resistors. These integrated functions can reduce external discrete-component count while simplifying PCB layout.
The single-translation architecture is a key engineering distinction. It uses one transaction translator for the two downstream ports rather than assigning an independent translator to every port. This can be suitable for embedded USB expansion where the application does not require maximum simultaneous transaction concurrency. By contrast, Microchip identifies USB2512B as a Multiple Transaction Translator design for applications needing more performance or parallel downstream-port operation.
Typical uses include embedded instrumentation, industrial control equipment, printers, test systems, set-top equipment, and other USB-enabled products that need two downstream connections from one embedded host interface. The exact upstream and downstream interface rates, electrical limits, pin names, clock requirements, and operating-temperature details must be confirmed in the manufacturer datasheet before layout or firmware development.
For robust implementation, follow the USB2422 Hardware Design Checklist and preserve the required USB routing, termination, bypass, and grounding practices. The 24-QFN footprint also demands careful thermal-pad assembly and adequate exposed-pad copper. Because the supplied distributor snippets do not provide a complete pinout, this record avoids inventing pin assignments and marks missing technical values explicitly where required.
This page consolidates the verified Microchip product description, distributor listings, datasheet links, and hardware-design references. It also distinguishes a true package-compatible replacement from merely similar USB hub controllers, which is essential because USB hubs may differ in translator architecture, pinout, package, clocking, and host-interface requirements.
Drop-in-Alternativen für USB2422/MJ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernUSB2422/MJ Technische Daten
| Device Type | USB 2.0 hub controller |
| Product Function | Two-port embedded USB hub controller |
| Upstream Ports | 1 port |
| Downstream Ports | 2 ports |
| USB Speed Configuration | Hi-Speed and Full-Speed hub, or Full-Speed-only hub |
| Supported Downstream Device Speeds | Low-Speed, Full-Speed, and Hi-Speed when configured as a Hi-Speed hub |
| Transaction Translator Architecture | Single transaction translator |
| Gehäuse | 24-QFN (4 mm x 4 mm) |
| Montageart | Surface mount |
| Integrated USB Resistors | Required port resistors integrated |
| D+ and D- Series Termination | Integrated series termination resistors |
| D+ and D- Bias Resistors | Required pull-down and pull-up resistors integrated |
| Downstream Over-Current Sense Pull-Ups | Integrated internal pull-up resistors |
USB2422/MJ 24-qfn (4 mm x 4 mm) Pinbelegungsleitfaden
Pinbelegung für USB2422/MJ (24-qfn (4 mm x 4 mm)-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für USB2422/MJ.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
USB2422/MJ ist geeignet für 6 Anwendungs: Embedded USB Test and Measurement Equipment, Industrial Control Console, Embedded Printer Interface Hub, USB Connectivity Expansion for Set-Top Systems, Portable Diagnostic and Service Hub, Embedded USB Data Acquisition Front End.
Embedded USB Test and Measurement Equipment
The USB2422/MJ fits embedded instruments that need one host connection to serve two peripheral devices without adding a full-size host controller. Its two downstream ports support Low-Speed, Full-Speed, and Hi-Speed devices when configured as a Hi-Speed hub, while the single-translator architecture provides a straightforward hub implementation for connected test accessories. Integrated D+ and D- termination, bias resistors, and downstream over-current-sense pull-ups can reduce external parts and shorten the USB interface section. The board should still follow Microchip's USB2422 Hardware Design Checklist and preserve controlled USB trace geometry.
Empfohlen
Industrial Control Console
USB2422/MJ is suitable for an industrial control console that connects two service peripherals, configuration adapters, or maintenance interfaces through one embedded USB uplink. The controller's Hi-Speed and Full-Speed hub capability supports a range of USB device speeds, including Low-Speed peripherals when the hub is configured appropriately. Its integrated USB port resistors simplify the connector-side circuitry, while the 24-QFN package supports compact board placement. Designers should validate cable length, over-current behavior, grounding, and firmware enumeration against the final enclosure and industrial EMC requirements.
Empfohlen
Embedded Printer Interface Hub
The USB2422/MJ can provide a compact two-port USB hub section for an embedded printer product that also exposes a configuration port or status accessory. The verified architecture uses one transaction translator for both downstream ports, making it appropriate when the design does not require the parallel transaction behavior associated with a multiple-translator hub. USB2422/MJ supports Hi-Speed, Full-Speed, and Low-Speed downstream devices when configured for Hi-Speed operation. Firmware must enumerate the attached devices correctly, and the PCB must maintain the differential-signal layout required by Microchip's hardware checklist.
Empfohlen
USB Connectivity Expansion for Set-Top Systems
USB2422/MJ can add two downstream USB connections to an embedded set-top or media system that already has one upstream USB route. The hub supports Full-Speed-only operation or combined Hi-Speed and Full-Speed operation, allowing the product to accommodate different peripheral classes. Because the controller provides integrated termination and bias resistors on its D+ and D- pins, the connector-side design can be more compact and repeatable than an equivalent discrete implementation. The final design must still validate thermal performance, host compatibility, cable behavior, and downstream over-current response.
Empfohlen
Portable Diagnostic and Service Hub
USB2422/MJ is appropriate for a compact diagnostic system that exposes two service connections through one embedded USB interface. Low-Speed, Full-Speed, and Hi-Speed downstream support allows the hub to serve legacy and faster peripherals when configured as a Hi-Speed hub. The 24-QFN footprint is useful where board area is constrained, and integrated USB resistors reduce assembly around the ports. A portable product should additionally verify current-limit behavior, cable shielding, ESD protection strategy, and ground continuity before production release.
Empfohlen
Embedded USB Data Acquisition Front End
USB2422/MJ can organize two downstream USB-connected acquisition or service modules behind a single upstream host connection in an embedded front end. The controller's two-port hub arrangement and support for Hi-Speed and Full-Speed operation provide flexibility for mixed-speed peripherals, while the integrated D+ and D- resistors simplify the connector interface. The single transaction translator should be selected only when the application does not require maximum simultaneous downstream activity. Firmware scheduling, bus timing, power budgeting, and signal-integrity validation remain essential engineering checks.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für USB2422/MJ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Package | 24-QFN (4 mm x 4 mm) |
| Brand | Microchip Technology |
| USB Hub Ports | 2 downstream ports |
| Upstream Configuration | Hi-Speed and Full-Speed hub, or Full-Speed-only hub |
| Transaction Translator | Single transaction translator |
| Downstream Device Speeds | Low-Speed, Full-Speed, and Hi-Speed when configured as Hi-Speed |
| Integrated USB Port Resistors | Integrated D+ and D- series termination and bias resistors |
| Over-Current Sense Pull-Ups | Integrated internal pull-ups on downstream over-current sense inputs |
Wichtigste Unterscheidungsmerkmale
- Single-translator two-port architecture (vs. USB2512B)
- Integrated USB interface resistors (vs. Discretes)
- Mixed-speed downstream support (vs. Full-Speed-only operation)
Designhinweise
Use the Microchip USB2422 Hardware Design Checklist as the baseline for connector, D+ and D- routing, grounding, bypass placement, and exposed-pad implementation. Keep the USB differential pair continuous and controlled, avoid unnecessary stubs, place any required protection close to the external connector, and maintain the recommended spacing from unrelated high-speed or switching circuitry. The datasheet states that USB-port resistors are integrated, but those internal functions do not remove the need for careful board-level signal integrity.
The part is supplied in a 24-QFN package measuring 4 mm by 4 mm, so pad breakout, paste design, solder profile, and inspection coverage should be validated against the manufacturer package drawing and assembly capability. Provide adequate exposed-pad copper and thermal vias where the package construction permits them. Confirm the exact pin names, exposed-pad requirements, and recommended land pattern in the official datasheet before releasing artwork; the supplied snippets do not include the complete pin map.
Do not substitute USB2512B as a drop-in part merely because it is another Microchip USB hub controller. Microchip describes USB2512B as a Multiple Transaction Translator with separate downstream transaction translators, whereas USB2422 uses a single transaction translator. The devices may differ in performance, firmware, package, pinout, and board requirements. Treat USB2512B as an architectural alternative until the datasheets and a complete hardware comparison establish exact interchangeability.
Confirm the USB2422/MJ supply voltage, current limits, power consumption, and sequencing requirements from the manufacturer datasheet before designing the power tree. The verified web snippets identify the device as low-power but do not provide a complete electrical-limit table, so estimates must not be treated as production specifications. Place required bypass capacitors close to the device and verify downstream over-current behavior under the worst-case attached-device loads specified by the system requirements.
Compliance-Informationen
The supplied verified snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than inferred from the manufacturer name or general semiconductor-industry practice.
