CYUSB3304-68LTXIT

Application Specific Microcontrollers Overview

The CYUSB3304-68LTXIT is a USB 3.2 Gen 1 hub controller from the EZ-USB™ HX3 family, compliant with USB 3.0 specification revision 1.0. It features four downstream ports supporting SuperSpeed (5 Gbps), High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) data rates. The device integrates an ARM® Cortex®-M0 CPU with 16 KB RAM and 32 KB ROM for system configuration and firmware management. Key capabilities include shared link functionality for embedded applications, ghost charging support, and ACA-Dock compliance. It operates within an industrial temperature range of –40°C to +85°C and utilizes a 68-pin QFN package.

Application Specific Microcontrollers Feature Summary

• Four downstream ports with dedicated transaction translators supporting USB 5 Gbps and backward compatibility
• Integrated ARM® Cortex®-M0 CPU with 16 KB RAM and 32 KB ROM for configuration and control
• Shared link feature enabling simultaneous connection of embedded SS devices and removable USB 2.0 devices
• Enhanced battery charging support including BC v1.2 compliance, ghost charging, and Apple charging

Application Specific Microcontrollers Applications

• Standalone hubs
• PC and tablet motherboards
• Docking stations
• Hand-held cradles
• Monitors and digital TVs

Application Specific Microcontrollers Procurement Notes

Verify the ordering suffix 'IT' corresponds to the industrial temperature grade (-40°C to +85°C) as specified in Infineon's ordering code definitions. Confirm that the 68-pin QFN package dimensions match the design requirements. Ensure I2C EEPROM or master availability if firmware upgrade via USB is required.

Application Specific Microcontrollers Selection Notes

Select this model for designs requiring four USB 3.0 downstream ports with integrated power management and charging capabilities. The shared link feature is suitable for embedded systems needing additional port expansion. Verify pin-strap configuration needs for VID, PID, and port activation before finalizing the PCB layout.

Application Specific Microcontrollers Part Context

This component belongs to the EZ-USB™ HX3 family of USB 3.2 Gen 1 hub controllers. Other variants in the series include CYUSB3302 (2-port), CYUSB331x (88-pin QFN), and CYUSB332x (up to 8 ports). The CYUSB3304 specifically offers a balance of port count and package size using the 68-pin QFN form factor.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same package and pinout include other CYUSB3304 variants with different temperature grades or packaging options, such as CYUSB3304-68LTXI (commercial grade) or CYUSB3304-100BGTI (100-ball BGA). Cross-family replacements like CYUSB3314 require package adaptation.