USB2422/MJ

Controllers Overview

The USB2422/MJ is a low-power, single transaction translator hub controller IC with two downstream ports for embedded USB solutions. It supports Hi-Speed and Full-Speed upstream connections and downstream devices at Low-Speed, Full-Speed, and Hi-Speed (when configured as a Hi-Speed hub). The device integrates all required USB port resistors, including series termination and pull-up/pull-down resistors on D+ and D- pins. It operates from a single external 3.3 V supply source, with internal regulators providing 1.2 V core voltage. The package is a 24-pin SQFN (4x4 mm) compliant with RoHS standards.

Controllers Feature Summary

• Supports the USB Battery Charging Specification, Revision 1.1
• Fully integrated USB termination and pull-up/pull-down resistors
• On-chip driver for 24 MHz crystal resonator or external 24 MHz clock input
• ESD protection up to 6 kV on all USB pins

Controllers Applications

• LCD monitors and TVs
• Multi-function USB peripherals
• PC motherboards
• Set-top boxes, DVD players, DVR/PVR
• Printers and scanners

Controllers Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure the component matches the exact datasheet revision required for your design. Confirm compliance with relevant environmental directives such as RoHS before finalizing procurement.

Controllers Selection Notes

Select this controller for designs requiring a compact, low-pin-count USB 2.0 hub solution. It is suitable for applications needing battery charging support and minimal external components due to integrated resistors. Consider the SMBus configuration option if dynamic control over hub settings is required instead of fixed strap configurations.

Controllers Part Context

The USB2422 is part of Microchip's USB interface family, designed specifically for embedded systems. It serves as a bridge between host controllers and multiple downstream USB devices, expanding connectivity in space-constrained environments while maintaining full USB 2.0 compliance.

Controllers Replacement Considerations

Check for updated revisions within the USB2422 series. Verify pin compatibility and electrical characteristics if considering alternative hub controllers from other manufacturers. Ensure any substitute supports the same transaction translator architecture and power requirements.