USB2422T/MJ - 2-Port USB 2.0 Hub Controller | Microchip
N.º de pieza: USB2422T/MJ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.042 | $1,04 |
| 10 | $1.042 | $10,42 |
| 100 | $1.042 | $104,20 |
| 500 | $1.042 | $521,00 |
| 1.000 | $1.042 | $1.042,00 |
USB2422T/MJ Descripción general
A USB hub controller is an interface IC that manages traffic between an upstream host and multiple downstream USB peripherals. The USB2422 combines the physical-layer connectivity, port management, transaction translation, and hub-specific control functions required to expand one host USB port into two downstream ports. It belongs to the USB interface controller hierarchy, which sits within interface ICs and broader embedded semiconductor systems.
The controller integrates the required USB port resistors, including series termination resistors on D+ and D-, pull-down and pull-up resistors on D+ and D-, and internal pull-ups for the downstream over-current sense inputs. This integration reduces external discrete-component count and simplifies embedded hub-board layouts. The upstream interface can operate as a High-Speed and Full-Speed hub or as a Full-Speed-only hub, providing configuration flexibility for different host links and legacy peripherals.
Microchip specifies conformance with the SMBus 1.0 voltage, power, and timing characteristics for slave-only devices except where Section 4.3 specifies otherwise. This makes the controller relevant to managed USB connectivity designs that use SMBus sideband signaling. Its two downstream ports are intended for embedded docking stations, compact equipment, industrial panels, and other USB expansion systems where external discrete hub electronics would add complexity.
Typical applications include USB-to-USB port expansion, embedded test and measurement equipment, industrial control panels, media appliances, and compact host systems. The 4 x 4 mm QFN package supports space-constrained designs, but exposed-pad layout and thermal management must follow the manufacturer's recommended land pattern.
When designing with the USB2422T/MJ, preserve the D+ and D- geometry, provide the required USB connection and bypass components, and use the package's exposed thermal pad as a low-impedance ground and heat-spreading path. Verify upstream and downstream operating-mode configuration, suspend behavior, and over-current handling in the complete system rather than assuming standard desktop-hub behavior.
This page consolidates the verified manufacturer and distributor information, explains the USB2422's integration benefits, identifies practical design constraints, and separates confirmed drop-in alternatives from candidates that require footprint verification before substitution.
Alternativas directas para USB2422T/MJ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
USB2422T-I/MJ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2422T/MJ Especificaciones
| Product Type | USB 2.0 hub controller |
| Number of Downstream Ports | 2 ports |
| Upstream Port Speed | Hi-Speed and Full-Speed, or Full-Speed only |
| Supported Downstream Speeds | Low-Speed, Full-Speed, and Hi-Speed |
| Transaction Translator | Single transaction translator |
| USB Version | USB 2.0 |
| SMBus Conformance | SMBus 1.0 voltage, power, and timing characteristics for slave-only devices, except as noted in Section 4.3 |
| Series Termination Resistors | Integrated on D+ and D- pins |
| D+ and D- Pull-Up and Pull-Down Resistors | Integrated |
| Over-Current Sense Pull-Ups | Integrated internal pull-up resistors for downstream ports |
| Encapsulado | 24-QFN (4 x 4 mm) |
| Package Height | 0.9 mm |
| Tipo de montaje | Surface Mount |
| Shipping Package | Tape and Reel |
| DigiKey Category | Controllers |
| DigiKey Subcategory | USB Interface |
| Power Class | Low-power hub controller |
Guía de configuración de pines de USB2422T/MJ tape and reel
Configuración de pines para USB2422T/MJ (encapsulado tape and reel). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para USB2422T/MJ.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
USB2422T/MJ es adecuado para 6 aplicacións: Embedded Two-Port USB Expansion, Industrial Control Panel USB Hub, Test and Measurement Data Acquisition, USB Media and Connectivity Appliance, USB-C Dock Interface Expansion, Portable Diagnostic and Service Terminal.
Embedded Two-Port USB Expansion
The USB2422T/MJ fits compact embedded systems that need to expand one upstream USB connection into two downstream ports. Its two-port USB 2.0 architecture, configurable upstream Hi-Speed/Full-Speed or Full-Speed-only operation, and support for Low-Speed, Full-Speed, and Hi-Speed downstream devices provide a broad device mix in one controller. The 24-QFN 4 x 4 mm package preserves board area, while integrated D+ and D- termination, biasing, and over-current-sense pull-ups reduce discrete component count. The principal design consideration is preserving USB-compliant differential routing and power distribution around the compact footprint.
Recomendado
Industrial Control Panel USB Hub
The USB2422T/MJ is suitable for industrial control panels requiring two protected USB connections for keyboards, service interfaces, data loggers, or removable media. Low-Speed and Full-Speed support covers conventional human-interface and peripheral devices, while Hi-Speed downstream operation supports storage when configured appropriately. The integrated USB-port resistors simplify the analog interface around the QFN device, and the SMBus sideband capability can support managed equipment. Engineers should budget for industrial temperature verification, connector protection, grounded enclosure coupling, and adequate current distribution.
Recomendado
Test and Measurement Data Acquisition
The USB2422T/MJ can provide two downstream USB connections in a compact instrument that needs to accept external storage, control peripherals, or service accessories. A single upstream link reduces host-port pressure, while the controller handles devices operating at Low-Speed, Full-Speed, or Hi-Speed. The 4 x 4 mm 24-QFN package is useful where front-panel and internal space is constrained, and integrated termination resistors reduce board-level part count. Critical practice is maintaining controlled USB power, short high-speed traces, solid reference planes, and isolation between sensitive measurement circuitry and switching peripherals.
Recomendado
USB Media and Connectivity Appliance
The USB2422T/MJ suits media appliances and connectivity accessories that need to expose two USB ports to an internal host. The upstream interface may operate as Hi-Speed and Full-Speed or Full-Speed only, allowing the design to match the host connection and peripheral population. Downstream Low-Speed, Full-Speed, and Hi-Speed support provides flexibility across legacy and current devices. Its integrated USB resistors and small QFN package reduce connector-adjacent circuitry, although the layout still requires disciplined return paths and protection against electrostatic discharge at externally accessible sockets.
Recomendado
USB-C Dock Interface Expansion
The USB2422T/MJ can serve as the downstream hub element in a compact dock architecture that adds USB-A connectivity to a host system. Two downstream ports cover peripherals such as keyboards, mice, storage, or service adapters without duplicating the full host USB PHY. The controller's integrated resistors reduce the number of external USB-interface components, and its compact 24-QFN footprint leaves routing space for power-management and connector circuitry. Dock implementation still requires negotiating upstream speed and power roles correctly and verifying that the USB-C lane transition satisfies the complete platform design.
Recomendado
Portable Diagnostic and Service Terminal
The USB2422T/MJ is appropriate for portable diagnostic equipment that combines one internal host connection with two service-facing USB ports. Low-power integration and a 4 x 4 mm package help control board area, while downstream speed support covers external flash drives, control pads, and legacy peripherals. The two-port topology can simplify cable management compared with multiple dedicated USB transceivers. Before deployment, verify the device's operating-temperature grade, add appropriate ESD protection at exposed connectors, and use the manufacturer's exposed-pad layout to maintain electrical and thermal performance.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para USB2422T/MJ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | USB2422T-I/MJ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 24-QFN (4 x 4 mm) | 24-QFN (4 x 4 mm) |
| Product Type | USB 2.0 hub controller | USB 2.0 hub controller |
| Downstream Ports | 2 ports | 2 ports |
| USB Version | USB 2.0 | USB 2.0 |
| Temperature-Grade Suffix | Commercial-grade suffix /MJ | I/MJ industrial-grade suffix |
| Availability | Listed as in stock by LCSC as of 2026-10-22 | Listed for purchase and shipment by DigiKey as of 2026-10-22 |
Diferenciadores clave
- Two-port USB 2.0 integration in a compact package (frente a USB2422T-I/MJ)
- Integrated USB interface resistors reduce external component count (frente a USB2422T-I/MJ)
- Broad downstream device-speed support (frente a USB2422T-I/MJ)
- Configurable upstream operating mode (frente a USB2422T-I/MJ)
Notas de diseño
Route the USB 2.0 differential pairs as short, symmetric traces on a continuous ground plane, with the upstream and downstream connections placed according to the manufacturer reference layout. The USB2422T/MJ integrates D+ and D- series termination and bias resistors, so adding redundant signal resistors can alter the intended network. Keep connector protection devices outside the high-speed signal path and provide a nearby low-impedance return path. Verify differential impedance and connector-related discontinuities with the complete stack-up rather than relying only on schematic connectivity.
Separate USB VBUS distribution from the controller's core supply and follow the datasheet schematic for local capacitors and downstream-port power control. Each externally accessible downstream port must meet its current limit and over-current behavior, while integrated over-current-sense pull-ups do not replace connector protection or correct power-path design. Use short supply connections and adequate copper area on the exposed pad. Where several ports can operate concurrently, calculate total VBUS demand and connector-current headroom rather than sizing the supply from the hub controller current alone.
Use the 24-QFN land pattern and exposed-pad recommendations from Microchip datasheet 00001726B. The exposed pad should be connected to the appropriate ground reference and stitched with multiple vias to improve thermal and electrical performance. Maintain solder-mask and paste patterns suitable for the package's 0.9 mm height and 4 x 4 mm body. Keep connector and protection components away from the QFN pin fanout so rework tools do not damage fine-pitch leads. Confirm the selected footprint dimensions against the package drawing before fabrication.
Do not treat USB2422T-I/MJ as a generic equal replacement without confirming temperature requirements, nor assume that a hub controller with two ports is pin-compatible because its connector count matches. The supplied evidence confirms only USB2422T-I/MJ as the same-package family alternative; USB2504, TUSB2046B, ISP1583, TUSB4020BI, FE1.1S, and GL850G require separate footprint and electrical review. Also verify upstream mode configuration and SMBus behavior, including the Section 4.3 exceptions, before releasing a production schematic.
Información de cumplimiento
The supplied manufacturer and distributor excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to this general-purpose commercial interface controller unless a separate qualified ordering code is verified.
