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CY7C65642-28LTXC

IFXCY7C65642-28LTXC

Infineon Technologies
USB Controller USB 2.0 I2C, SPI Interface 28-QFN (5x5)
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Overview

The CY7C65642-28LTXC is a USB 2.0 TetraHub controller from Infineon (formerly Cypress) designed for high-speed connectivity in nested hub environments. This 4-port controller integrates the USB transceiver, serial interface engine, and a 2KB flash-based MCU core to manage data routing and configuration. It supports wide operating voltages from 3.15V to 5.25V, making it suitable for both bus-powered and self-powered hub designs.

Why Choose This Part

The TetraHub architecture utilizes dedicated Transaction Translators (TT) for each downstream port, ensuring maximum throughput when mixed-speed devices (USB 1.1 and 2.0) are connected simultaneously. Its 28-QFN package occupies only 5x5mm of PCB space, and the integrated 2KB flash allows for firmware customization or vendor-specific string storage.

Applications

Docking Stations
Provides multiple downstream ports for connecting peripherals to laptop or tablet workstations via a single upstream link.
Integrated Monitor Hubs
Embedded within display housings to allow users to connect keyboards, mice, and storage devices directly to the screen.
Advanced Port Replicators
Facilitates expansion of I/O on industrial and consumer hardware using the onboard I2C and SPI interfaces for peripheral management.

Key Specifications

Function Controller
Protocol USB
Interface I2C, SPI
Standards USB 2.0
Package / Case 28-WFQFN Exposed Pad
Voltage - Supply 3.15V ~ 5.25V
Operating Temperature 0degC ~ 70degC
Supplier Device Package 28-QFN (5x5)

Getting Started

Designers should refer to the Infineon HX2VL development kit (CY3687) for hardware evaluation. Configuration is typically handled via the I2C interface to an external EEPROM or by using the USB Blaster tool for on-chip flash programming. Ensure the 28-WFQFN exposed pad is properly soldered to the ground plane for thermal stability and EMI performance.

Also Consider

USB2514B MCHPMicrochip Technology - A widely used 4-port USB 2.0 hub controller known for its MultiTRAK technology and industrial temperature range options.
TUSB2046B TITexas Instruments - A robust 4-port hub solution often selected for designs requiring high reliability and simplified hardware strapping.

Categories

Interface ICs > USB Interface ICs