CY7C65640A-LFXC

Controllers Overview

The CY7C65640A-LFXC is a TetraHub high-speed USB 2.0 hub controller manufactured by Infineon Technologies, originally developed by Cypress Semiconductor. It features four downstream ports with dedicated transaction translators for maximum performance. The device operates at a data rate of 480 Mb/s and requires a 3.3 V power supply. It utilizes a 56-pin QFN package and integrates an upstream pull-up resistor, downstream pull-down resistors, and series termination resistors. Configuration parameters such as VID, PID, and DID are loaded from an external SPI EEPROM.

Controllers Feature Summary

• Integrates four downstream ports with individual transaction translators to ensure independent bandwidth allocation for full- and low-speed devices.
• Supports configuration via external SPI EEPROM for custom VID, PID, DID, and operational settings including power switching modes and overcurrent timers.
• Includes integrated hardware components such as upstream pull-up resistors, downstream pull-down resistors, and series termination resistors to simplify design.
• Provides port indicator support with dual-color LED outputs (green and amber) for automatic or manual status indication.

Controllers Applications

• Standalone USB hubs
• Motherboard hubs
• Monitor hub applications
• External personal storage drives
• Docking stations

Controllers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific LFXC suffix denotes the functional and pin-equivalent die revision intended for improved performance. Check for RoHS compliance documentation and ensure the external SPI EEPROM matches the required command format for proper initialization.

Controllers Selection Notes

Select this component when a fixed-function USB 2.0 hub solution with four ports is required without firmware development overhead. Ensure the design accommodates an external SPI EEPROM for configuration and provides sufficient power handling for the 460 mA operating current. Verify that the 56-pin QFN package fits the PCB layout constraints and thermal requirements.

Controllers Part Context

The CY7C65640A-LFXC is part of the TetraHub family, representing a high-performance USB 2.0 hub controller. It serves as a functional and pin-equivalent revision of the CY7C65640-LFXC, with internal changes aimed at enhancing device performance while maintaining compatibility with existing reference designs and software interfaces.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Infineon or Cypress resources for potential cross-references or updated product line replacements.