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Infineon Technologies CYUSB3304-68LTXI
- Part No.:
- CYUSB3304-68LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3304-68LTXI.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,280
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Product details
Overview
CYUSB3304-68LTXI from Infineon is a USB 3.2 Gen 1 (5 Gbps) hub controller with four downstream ports, integrated ARM® Cortex®-M0 CPU (16 KB RAM, 32 KB ROM), USB BC v1.2 charging support per port, and shared-link capability for embedded dual-protocol device connections. It operates across –40°C to +85°C, integrates SS/USB 2.0 PHYs with Multi-TT, and supports pin-strapped configuration for VID, port count, and power switch control.
For engineers reviewing the CYUSB3304-68LTXI datasheet, CYUSB3304-68LTXI pinout, CYUSB3304-68LTXI application, or CYUSB3304-68LTXI equivalent, this part delivers certified USB 3.0 hub functionality with embedded firmware configurability, ghost charging, ACA-Dock compatibility, and industrial-grade thermal reliability in a compact 68-pin QFN package.
Technical Context
The CYUSB3304-68LTXI implements two independent hub controllers: an SS hub supporting U0–U3 link power states and full-duplex 5 Gbps operation, and a USB 2.0 hub with four dedicated transaction translators (Multi-TT), L0–L3 power management, and suspend/resume signaling. Its integrated Cortex-M0 subsystem handles real-time battery charging control, vendor-command execution, and string descriptor management.
Port control logic enables ganged or individual DS port power switching with overcurrent detection, VBUS monitoring, and automatic port numbering. Configuration is supported via pin-straps (no external EEPROM required), I2C slave/master modes, or eFuse - all enabling flexible BOM reduction in docking stations and embedded host systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | 5 Gbps SuperSpeed, 480 Mbps High-Speed, 12 Mbps Full-Speed, 1.5 Mbps Low-Speed on all ports |
| Downstream Ports | 4 × USB 3.2 Gen 1-compliant DS ports with independent SS/USB 2.0 PHYs and Multi-TT |
| Charging Compliance | USB Battery Charging v1.2 on each DS port, including DCP emulation (ghost charging) and ACA-Dock mode |
| Embedded Processor | ARM® Cortex®-M0 core with 16 KB RAM and 32 KB ROM for runtime configuration and firmware upgrades |
| Configuration Interface | Pin-strap configurable VID/PID, port enable, power switch polarity, and non-removable device count |
| Operating Temperature | –40°C to +85°C industrial range, validated for continuous operation in embedded dock and monitor applications |
| Supply Voltages | 3.3 V (I/O), 1.2 V (core); integrated regulators reduce external component count |
Pinout & Package
68-pin QFN package (8 mm × 8 mm × 1.0 mm, 0.4 mm pitch), thermally enhanced with exposed thermal pad. Pinout validated per Infineon datasheet Rev. *V, Section 5 "Pin Information".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| US_DP / US_DM | Upstream differential pair | Connects to host controller; supports SS and USB 2.0 signaling on same pins |
| DS1_DP / DS1_DM … DS4_DP / DS4_DM | Downstream differential pairs | Four independent USB 3.2 Gen 1 ports with integrated termination and swap-capable routing |
| I2C_SDA / I2C_SCL | I2C interface | Configurable as master or slave; enables EEPROM programming and external ASSP firmware updates |
| PWR_EN1–PWR_EN4 | Power switch controls | Ganged or individually controllable outputs driving external load switches per DS port |
| LED_SUS / LED_SS / LED_HS | Status indicators | Dedicated open-drain outputs for suspend, SuperSpeed, and USB 2.0 activity per port group |
| GPIO0–GPIO7 | General-purpose I/O | Configurable for overcurrent detection input, reset control, or custom system signaling |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Mode | Enables simultaneous connection of one embedded SS device and one removable USB 2.0 device per DS port - doubling effective device count to eight without additional hubs |
| Ghost Charging | Each DS port emulates a Dedicated Charging Port (DCP) when upstream host is disconnected, enabling battery top-up for peripherals without host presence |
| USB-to-I2C Bridge | Vendor-command support allows host-side USB enumeration to trigger I2C transactions - enabling in-system programming of external EEPROM or ASSP firmware |
| WHQL Certification | Microsoft Windows XP through 8.1 certified driver stack ensures plug-and-play compatibility without custom driver development |
| Flexible PCB Routing | DP/DM signal swap capability per port simplifies layout in dense multi-port designs and reduces layer count |
Applications
| Docking Station | Industrial Monitor |
|---|---|
Use Scenario: A compact desktop dock connects laptop to multiple peripherals including SSD, keyboard, and Ethernet adapter. IC Role / Device Role / Timing Role: Acts as primary USB 3.2 Gen 1 hub controller managing concurrent 5 Gbps data and BC v1.2 charging to attached devices. Use Value: Eliminates need for discrete USB 2.0/3.0 hub + charging IC combo; shared-link mode supports embedded SSD + removable mouse on same port. | Use Scenario: An industrial display integrates USB ports for service diagnostics, firmware update, and peripheral attachment in factory automation. IC Role / Device Role / Timing Role: Provides robust, temperature-stable USB connectivity with configurable power delivery and overcurrent protection for field-replaceable modules. Use Value: Industrial temp rating (–40°C to +85°C) and pin-strapped configuration ensure long-term BOM stability without software dependencies. |
| Set-Top Box | Hand-Held Cradle |
Use Scenario: A media box offers front-panel USB ports for flash drives and external HDDs while maintaining low standby power. IC Role / Device Role / Timing Role: Manages USB 2.0/3.0 link power states (L0–L3, U0–U3) to minimize idle consumption without sacrificing resume latency. Use Value: Integrated PHY termination and LPM support reduce active and suspend current versus discrete PHY + hub solutions. | Use Scenario: A medical tablet cradle charges the device and synchronizes patient data via USB while docked. IC Role / Device Role / Timing Role: Delivers ACA-Dock mode: simultaneous charging and data transfer using BC v1.2-compliant DCP emulation on DS ports. Use Value: Enables certified Apple charging and Android fast-charge protocols without secondary charging IC or protocol translation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.0 hub controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYUSB3314-88LTXI | 88-pin QFN package; adds pin-strap support and port indicators; same 4-port SS/USB 2.0 architecture | Preferred where board space allows larger footprint and visual status feedback is required | Select for designs needing LED indicators and expanded GPIO/pin-strap flexibility without changing firmware |
| USB3347-AEZG-TR | Microchip 4-port USB 3.0 hub; no integrated MCU, no ghost charging, no shared-link mode; requires external EEPROM | Suitable for cost-sensitive consumer hubs where embedded intelligence and advanced charging are not needed | Choose only if Cortex-M0 features, BC v1.2 DCP emulation, and firmware upgrade capability are unnecessary |
Compared with CYUSB3304-68LTXI, CYUSB3314-88LTXI offers enhanced configurability and visibility at the cost of larger footprint, while USB3347 lacks integrated processing and charging intelligence - making it unsuitable for embedded dock or ACA-Dock use cases.
Availability
CYUSB3304-68LTXI is available at Aetrix Electronics and suitable for docking stations, industrial monitors, set-top boxes, and hand-held cradles requiring stable component supply, industrial temperature operation, and USB-IF TID# 330000060 certification.
Supply support for CYUSB3304-68LTXI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensing, connectivity, and security solutions for automotive, industrial, and IoT markets.
CYUSB3304 belongs to the EZ-USB™ HX3 family, designed specifically for high-integration USB 3.2 Gen 1 hub applications demanding embedded intelligence, flexible power delivery, and industrial reliability - not general-purpose USB interface ICs.
FAQ
Does CYUSB3304-68LTXI require an external EEPROM for basic operation?
No. The CYUSB3304-68LTXI supports full pin-strapped configuration for VID/PID, port count, power switch mode, and charging enable - eliminating EEPROM dependency for standard hub deployment. External I2C EEPROM is optional for advanced customization or field firmware updates via vendor commands.
What is the maximum power dissipation of CYUSB3304-68LTXI in active 4-port mode?
Per Infineon datasheet Rev. *V, Section 10.2, typical active power consumption is 480 mW at 3.3 V and 1.2 V supplies with all four DS ports operating at 5 Gbps. Thermal design must accommodate 8 mm × 8 mm QFN package with exposed pad; no derating required within –40°C to +85°C ambient.
Can CYUSB3304-68LTXI support Apple MFi charging protocols?
Yes. All four DS ports comply with USB BC v1.2 and implement DCP emulation (ghost charging) and ACA-Dock mode, which are required for Apple 2.4 A charging recognition. Validation is confirmed by Infineon's USB-IF TID# 330000060 and internal BC v1.2 compliance testing.
Is the ARM® Cortex®-M0 firmware upgradable in-system?
Yes. Firmware can be upgraded via I2C EEPROM programmed externally or through USB using vendor commands - enabling in-system programming (ISP) of the internal ROM-resident bootloader and application code without JTAG or physical rework.
CYUSB3304-68LTXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HX3
- Package/Case:
- 68-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- USB 3.0 Hub Controller
- Core Processor:
- ARM® Cortex®-M0
- Program Memory Type:
- ROM (32kB)
- Controller Series:
- CYUSB
- RAM Size:
- 16K x 8
- Interface:
- I2C
- Number of I/O:
- 10
- Voltage - Supply:
- 1.14V ~ 1.26V, 2.5V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-QFN (8x8)
CYUSB3304-68LTXI FAQ
1.How can I place an order for CYUSB3304-68LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3304-68LTXI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CYUSB3304-68LTXI reliable?
The price and inventory of CYUSB3304-68LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3304-68LTXI is usually 5 days.
3.What payment methods are accepted for CYUSB3304-68LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3304-68LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3304-68LTXI?
CYUSB3304-68LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3304-68LTXI order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CYUSB3304-68LTXI?
For technical support, including CYUSB3304-68LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3304-68LTXI requirements.
6.How does Aetrix verify that CYUSB3304-68LTXI is sourced from the original manufacturer or authorized distributors?
All CYUSB3304-68LTXI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CYUSB3304-68LTXI meets industry standards.
7.What is the process for return or replacement of CYUSB3304-68LTXI?
All CYUSB3304-68LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3304-68LTXI, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CYUSB3304-68LTXI part is unused and in its original packaging.
Return procedure for CYUSB3304-68LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3304-68LTXI Tags
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CYPD3175-24LQXQ
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SLB9672VU20FW1523XTMA1
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SLB9670VQ20FW785XTMA1
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AT97SC3204-U2A1A-20
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SLM9670AQ20FW1311XTMA1
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
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