USB5744-I/2G

Controllers Overview

The Microchip USB5744-I/2G 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 operates on a 1.2 V core supply and a 3.3 V I/O supply, with a maximum operating current of 688 mA. It functions within an industrial temperature range of -40°C to +85°C and is housed in a 56-pin VQFN package measuring 7 x 7 mm.

Controllers Feature Summary

• Integrated 8051 microcontroller managing I/Os, VBUS, and signals with 64 KB ROM and 8 KB RAM.
• Supports USB-IF Battery Charging revision 1.2 profiles including DCP, CDP, and SDP.
• Features PortSwap for differential-pair signal swapping and PHYBoost for programmable drive strength.
• Configurable via OTP ROM, SPI ROM, or SMBus for custom OEM settings.

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/2G' against the manufacturer's official documentation to confirm industrial temperature rating (-40°C to +85°C) and tape-and-reel packaging configuration. Ensure compatibility with required system voltage levels and interface protocols before integration.

Controllers Selection Notes

Select this component for applications requiring integrated firmware control and advanced signal integrity features like VariSense. Confirm that the 56-pin VQFN footprint fits the PCB layout constraints and that the design supports the necessary external bias resistor and crystal oscillator requirements.

Controllers Part Context

The USB5744 series includes variants such as the USB5744T/2G and USB5744/2G. The '-I/' designation specifically indicates the industrial temperature grade, distinguishing it from commercial grade options. All variants share the same 56-pin VQFN package and core functionality.

Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify cross-compatibility with other Microchip hub controllers based on pinout and firmware requirements.

Controllers FAQ

How is the battery charging configuration determined?

Battery charging is configured via the CFG_BC_EN strap using specific external resistor values to enable charging on selected ports.

What clock source does the USB5744 use?

The device uses an external 25 MHz crystal connected to XTALI and XTALO pins, or can be driven by a single-ended clock oscillator.

Can unused downstream ports be disabled?

Yes, ports can be disabled by configuring the PRT_DIS_P and PRT_DIS_M straps with appropriate pull-up resistors.