CYUSB3326-88LTXC

Application Specific Microcontrollers Overview

The CYUSB3326-88LTXC is a USB 3.2 Gen 1 hub controller from Infineon Technologies, part of the EZ-USB HX3 family. It supports up to six downstream ports: two SuperSpeed (5 Gbps) and four USB 2.0 High-Speed ports. The device integrates an ARM Cortex-M0 CPU with 16 KB RAM and 32 KB ROM for system configuration and charging control. Key features include shared link capability for embedded applications, ghost charging, ACA-Dock support, and BC v1.2 compliance. It operates within an industrial temperature range of -40°C to +85°C and utilizes an 88-pin QFN package.

Application Specific Microcontrollers Feature Summary

• Six Downstream Ports: Supports two USB 3.0 SuperSpeed (5 Gbps) and four USB 2.0 High-Speed ports.
• Shared Link Feature: Enables splitting a USB 3.0 port into an embedded SS device connection and a standard USB 2.0 port.
• Integrated Power Management: Supports BC v1.2, Ghost Charging, and ACA-Dock modes with external power switch control.
• Embedded Control: Includes an ARM Cortex-M0 CPU for firmware upgrades, GPIO configuration, and vendor-command support.

Application Specific Microcontrollers Applications

• Docking stations
• PC and tablet motherboards
• Hand-held cradles
• Monitors and digital TVs
• Set-top boxes

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix '88LTXC' against the manufacturer's current datasheet to confirm package type, temperature grade, and lead time requirements. Ensure compatibility with I2C EEPROM configurations if in-system programming is required. Check for moisture sensitivity levels and recommended reflow profiles during assembly.

Application Specific Microcontrollers Selection Notes

Select this component when a six-port expansion is needed with two dedicated SuperSpeed lanes. The shared link feature is critical for designs requiring simultaneous connection of internal embedded devices and removable peripherals on the same physical port. Verify that the host system supports USB 3.2 Gen 1 specifications and that the PCB layout accommodates the 88-pin QFN footprint.

Application Specific Microcontrollers Part Context

This part belongs to the EZ-USB HX3 family, which includes variants like CYUSB3302, CYUSB3324, and CYUSB3328. The CYUSB3326 specifically bridges the gap between 4-port and 8-port controllers by offering a hybrid configuration of 2 SS and 4 HS ports. It shares architectural similarities with other HX3 models but differs in port count and shared link availability.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same family include CYUSB3324 (4 SS ports) or CYUSB3328 (4 SS, 4 HS ports). Note that pinouts and port configurations differ significantly; software and hardware redesigns are likely necessary when switching between these variants.