USB5434B-JZX

Controllers Overview

The USB5434B-JZX is a 4-port SuperSpeed/Hi-Speed hub controller compliant with the USB 3.0 specification. It supports data rates of 5 Gbps (SuperSpeed), 480 Mbps (Hi-Speed), 12 Mbps (Full-Speed), and 1.5 Mbps (Low-Speed). The device operates on dual power supplies: VDD12 at 1.25 V and VDD33 at 3.3 V. It features integrated termination, pull-up/pull-down resistors, and MultiTRAK technology with dedicated Transaction Translators for each port. The component is housed in a 64-pin QFN package measuring 9 x 9 mm with an exposed pad, designed for surface mount installation within a commercial temperature range of 0°C to +70°C.

Controllers Feature Summary

• Parallel operation of independent SuperSpeed and USB 2.0 controllers prevents bandwidth degradation from legacy traffic
• MultiTRAK technology provides dedicated Transaction Translators per port to maintain consistent Full-Speed throughput
• Integrated internal resistors eliminate external components for series termination and D+/D- biasing
• Supports JTAG boundary scan testing and includes an IETF RFC 4122 compliant 128-bit UUID

Controllers Applications

• Desktop and laptop computer expansion ports
• Industrial control systems requiring multiple peripheral connections
• Embedded host devices needing high-speed data aggregation

Controllers Procurement Notes

Verify the specific suffix 'JZX' against the manufacturer's current ordering guide to confirm the package type and temperature range. Confirm RoHS compliance status as required by local regulations. Check for obsolescence notices or lifecycle changes directly from Microchip Technology before finalizing procurement plans.

Controllers Selection Notes

Select this component when a low-power, configurable hub solution supporting all USB speeds is required. Ensure the design accommodates the 25 MHz crystal or external clock input. Verify that the PCB layout supports the 64-pin QFN thermal requirements via the exposed ground pad connection.

Controllers Part Context

This part belongs to the SMSC USB5434B family acquired by Microchip Technology. It serves as a bridge between upstream host controllers and downstream USB peripherals. The device replaces older discrete hub solutions by integrating PHY layers and routing logic into a single silicon die.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.