USB5744B-I/2GX01

Controllers Overview

The Microchip USB5744B-I/2GX01 is a low-power, OEM-configurable USB 3.2 Gen 1 hub feature controller with four downstream ports. It supports SuperSpeed (5 Gbps), Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) data rates. The device integrates an embedded 8051 microcontroller with 64 KB ROM, 8 KB RAM, and 8 KB OTP memory for firmware execution. It operates within a commercial temperature range of 0°C to +70°C and an industrial range of -40°C to +85°C. Power requirements include VDD33 at 3.3V and VDD12 at 1.2V. The component is housed in a 56-pin VQFN package measuring 7 x 7 mm.

Controllers Feature Summary

• Supports USB-IF Battery Charging revision 1.2 profiles including DCP, CDP, and SDP on upstream and downstream ports.
• Includes PortSwap for configurable differential pair signal swapping and PHYBoost for programmable drive strength to restore signal integrity.
• Features VariSense technology for programmable receiver sensitivity to operate in sub-optimal system environments.
• Allows configuration via internal default settings, external SPI ROM, or One-Time Programmable (OTP) memory.

Controllers Applications

• Standalone USB Hubs
• Laptop Docks
• PC Motherboards
• Multi-function USB 3.2 Gen 1 Peripherals

Controllers Procurement Notes

Verify the specific suffix 'I/2GX01' against the manufacturer's current documentation to confirm exact packaging and environmental grade specifications. Ensure that the ordering information matches the required industrial temperature range and RoHS compliance status defined in the official datasheet DS00001855J before finalizing procurement.

Controllers Selection Notes

Select this component when a compact 4-port USB 3.2 Gen 1 solution with integrated battery charging detection is required. Consider the USB5744B-I/2GX01 for designs needing flexible port configuration via straps or external ROM. Evaluate the need for PHYBoost and VariSense features if the PCB layout presents signal integrity challenges or uses captive cables.

Controllers Part Context

The USB5744 series represents Microchip's fourth-generation USB hub controllers, designed to reduce system complexity by integrating host controller functions. This specific part number belongs to the USB5744 family, which includes variants like the USB5744T and USB5744-I. The series is certified by the USB-IF and supports advanced power management and OEM customization options.

Controllers Replacement Considerations

Direct substitutes within the same family include the USB5744T/2G and USB5744-I/2G. Verify pin compatibility and firmware requirements when transitioning between these variants, as they share the same 56-pin VQFN package and core functionality but may differ in packaging format or temperature rating.

Controllers FAQ

How does the USB5744 handle battery charging?

The device supports USB-IF Battery Charging revision 1.2, enabling Dedicated Charging Port (DCP), Charging Downstream Port (CDP), and Standard Downstream Port (SDP) profiles on both upstream and downstream ports.

What is the function of PortSwap?

PortSwap allows per-port programmability of USB differential-pair pin locations, enabling direct alignment of USB signals to connectors to avoid uneven trace lengths or crossing of differential signals on the PCB.

Can the device be configured without external memory?

Yes, the device can operate using internal default settings or be configured via its onboard 8 KB One Time Programmable (OTP) ROM, eliminating the need for external SPI ROM in simpler applications.