CYUSB3312-88LTXIT

Application Specific Microcontrollers Overview

The CYUSB3312-88LTXIT 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 two 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 battery charging control. Electrical specifications include a minimum operating voltage of 1.14 V, a maximum of 1.26 V, and a typical operating current of 410 mA. 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

• USB-IF Certified Hub Controller supporting up to four DS ports with backward compatibility to USB 2.0/1.1
• Integrated ARM Cortex-M0 CPU enabling firmware upgrades via I2C or USB vendor commands
• Supports Shared Link feature for embedded applications and Ghost Charging when the host is disconnected
• Includes dedicated High-Speed transaction translators (Multi-TT) and SS/USB 2.0 link power management

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 specific suffix 'IT' corresponds to the industrial temperature grade (-40°C to +85°C) and reel packaging format as indicated in distributor listings. Confirm RoHS compliance status through official Infineon documentation prior to integration. Ensure the ordering code matches the exact pinout and electrical requirements for the target application design.

Application Specific Microcontrollers Selection Notes

Select this model for designs requiring exactly two SuperSpeed downstream ports with industrial temperature tolerance. Compare against CYUSB3314 if four ports are needed, or CYUSB3302 if a different package option like 68-QFN is preferred. Verify that the 88-pin QFN footprint fits the PCB layout constraints and that the 1.2 V core supply and 3.3 V I/O supply rails are available.

Application Specific Microcontrollers Part Context

This component belongs to the EZ-USB HX3 family of USB 3.0 hub controllers. It shares architectural similarities with CYUSB3302, CYUSB3314, and CYUSB3324 but differs in port count and package options. The CYUSB3312 specifically offers a balance between port density and board space using the 88-pin QFN form factor.

Application Specific Microcontrollers Replacement Considerations

CYUSB3312-88LTXCT serves as a commercial grade alternative with a 0°C to +70°C operating range. CYUSB3312-88LTXC is another variant in the same series. Direct functional substitutes within the same package and pinout must be verified against the official product comparison table.