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Infineon Technologies CYUSB3304-68LTXIT
- Part No.:
- CYUSB3304-68LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3304-68LTXIT.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,649
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Product details
Overview
CYUSB3304-68LTXIT from Infineon is a USB 3.2 Gen 1 (5 Gbps) 4-port hub controller with integrated ARM® Cortex®-M0 CPU, USB 2.0 Multi-TT transaction translators, and BC v1.2-compliant charging on all downstream ports. It supports shared link mode for embedded dual-device per port, ghost charging during host disconnection, and pin-strapped configuration - deployed in docking stations, monitors, and digital TVs.
For engineers reviewing the CYUSB3304-68LTXIT datasheet, CYUSB3304-68LTXIT pinout, CYUSB3304-68LTXIT application, or CYUSB3304-68LTXIT equivalent, this device delivers verified USB 3.0 hub functionality with integrated power management, I2C-based firmware upgrade, and industrial temperature operation (–40°C to +85°C) in a 68-pin QFN package.
Technical Context
The CYUSB3304 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 (one per DS port), L0–L3 power states, and remote wake-up signaling. Its Cortex-M0 subsystem (16 KB RAM, 32 KB ROM) handles configuration, BC v1.2 charging control, and vendor-command execution.
It integrates USB 2.0 PHYs and SS PHYs per port, on-chip termination/pull-up/pull-down resistors, and a port controller enabling ganged or individual power switching, overcurrent detection, and ACA-Dock mode support. Configuration is supported via pin-straps, eFuse, or I2C EEPROM - no external configuration IC required.
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 3.0-compliant ports with independent SS + USB 2.0 lanes and Multi-TT architecture |
| Charging Compliance | USB Battery Charging v1.2 on all DS ports, including DCP emulation (ghost charging) and ACA-Dock support |
| CPU Core | ARM® Cortex®-M0 with 16 KB SRAM and 32 KB ROM for runtime configuration and firmware updates |
| Configuration Interface | I2C slave/master/multi-master; supports EEPROM programming and USB-to-I2C bridge via vendor commands |
| Operating Temperature | –40°C to +85°C industrial grade, validated for continuous operation in embedded systems |
| Package | 68-pin QFN (8 mm × 8 mm × 1.0 mm), lead-free and RoHS-compliant |
Pinout & Package
Package: 68-pin QFN (8 mm × 8 mm × 1.0 mm), exposed thermal pad, 0.4 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3P3 | 3.3 V supply input | Primary I/O and USB 2.0 PHY power rail; requires local 3.3 V regulation and decoupling |
| VDD_1P2 | 1.2 V supply input | Core logic and SS PHY power rail; must be supplied by low-noise 1.2 V regulator |
| US_DP / US_DM | Upstream differential pair | Connects to host controller; supports SS and USB 2.0 signaling on same pins |
| DS1_SSTXP / DS1_SSTXN / DS1_SSRXP / DS1_SSRXN | Port 1 SuperSpeed lanes | Dedicated high-speed differential pairs for 5 Gbps data; require controlled impedance routing |
| DS1_DP / DS1_DM | Port 1 USB 2.0 differential pair | Backward-compatible HS/FS/LS signaling; integrated termination eliminates external resistors |
| I2C_SDA / I2C_SCL | I2C interface signals | Supports configuration, firmware update, and EEPROM programming; pull-ups required externally |
| GPIO[0:7] | Configurable general-purpose I/O | Programmable for power enable, overcurrent flag, LED 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 - increases effective device count to eight without extra hubs |
| Ghost Charging | Each DS port emulates a Dedicated Charging Port (DCP) when upstream host is disconnected - maintains battery charging for peripherals without host presence |
| Integrated Cortex-M0 Subsystem | Enables real-time configuration, dynamic charging policy enforcement, and in-system firmware updates via USB without external microcontroller |
| Pin-Strap Configuration | Allows VID/PID, port count, power switch mode, and BC v1.2 enable/disable to be set at boot - eliminates need for external EEPROM in cost-sensitive designs |
| USB-IF Certified & WHQL Validated | TID# 330000060 and 30000074; certified for Windows XP through 8.1, macOS 10.9+, and Linux kernel ≥3.11 - reduces driver validation effort |
Applications
| Docking Station Hub | Monitor Integrated Hub |
|---|---|
|
Use Scenario: A compact desktop dock connects laptop to multiple peripherals (SSD, keyboard, webcam) while charging smartphone via USB-A port. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub controller managing upstream host link and four downstream ports with independent power and charging control. Use Value: Shared link mode allows internal SSD (SS) and external keyboard (USB 2.0) to share one DS port; ghost charging sustains phone charge when laptop sleeps. |
Use Scenario: A 4K monitor embeds USB hub functionality to provide two USB-A ports for keyboard/mouse and one USB-C port for data+power passthrough. IC Role / Device Role / Timing Role: USB 3.2 Gen 1 hub with integrated BC v1.2 charging and ACA-Dock support enables simultaneous data transfer and smart device charging. Use Value: ACA-Dock mode permits tablet-as-host to charge and communicate over same port; pin-strapping simplifies BOM by removing EEPROM. |
| Digital TV Peripheral Hub | Industrial Embedded Host Interface |
|
Use Scenario: Smart TV uses internal hub to connect streaming stick, game controller, and external HDD - all requiring concurrent high-bandwidth and charging capability. IC Role / Device Role / Timing Role: USB 3.2 Gen 1 hub with Multi-TT and SS/USB 2.0 coexistence ensures zero-latency HID response and sustained 5 Gbps HDD throughput. Use Value: Four independent transaction translators prevent USB 2.0 bandwidth contention; industrial temp rating ensures reliability in enclosed TV chassis. |
Use Scenario: Ruggedized medical display unit provides field-serviceable USB ports for diagnostic tools, barcode scanners, and flash drives in hospital environments. IC Role / Device Role / Timing Role: Embedded hub with configurable GPIOs and overcurrent protection acts as robust, self-monitoring USB interface controller. Use Value: GPIOs drive status LEDs and enable/disable power switches; –40°C to +85°C operation guarantees uptime in uncontrolled ambient conditions. |
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 |
|---|---|---|---|
| USB3343-AEZG-TR (Microchip) | 3-port USB 3.0 hub; no integrated MCU; relies on external EEPROM for configuration; no ghost charging or shared link | Limited to basic hub functions without embedded intelligence; lacks BC v1.2 DCP emulation during host disconnect | Select when minimal BOM and fixed configuration suffice; avoid if ACA-Dock or dynamic charging policies are required. |
| TUSB8041IRGCR (Texas Instruments) | 4-port USB 3.0 hub with integrated USB 2.0 TT but no ARM core; configuration via I2C only; no pin-straps or ghost charging | Requires external I2C master or EEPROM; no firmware upgradability or runtime charging policy control | Choose for legacy compatibility where Infineon's M0-based configurability and charging features are unnecessary. |
Compared with USB3343-AEZG-TR and TUSB8041IRGCR, CYUSB3304-68LTXIT uniquely combines pin-strapped flexibility, on-die Cortex-M0 for adaptive charging, and ghost charging - enabling host-independent peripheral power management in space-constrained embedded systems.
Availability
CYUSB3304-68LTXIT is available at Aetrix Electronics and suitable for docking stations, digital TVs, industrial displays, and embedded host interfaces requiring stable component supply, industrial temperature operation, and USB-IF-certified interoperability.
Supply support for CYUSB3304-68LTXIT 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, automotive ICs, security solutions, and USB connectivity products with global manufacturing and qualification standards.
CYUSB3304 belongs to the EZ-USB™ HX3 family - designed specifically for embedded USB 3.2 Gen 1 hub applications requiring intelligent power delivery, multi-protocol support, and firmware-upgradable configuration in space- and cost-constrained systems.
FAQ
Does CYUSB3304-68LTXIT support USB 3.2 Gen 2 (10 Gbps)?
No. CYUSB3304-68LTXIT complies strictly with USB 3.2 Gen 1 (5 Gbps) and USB 2.0 specifications. It does not implement Gen 2 encoding, 10 Gbps PHY, or associated link training - confirmed by USB-IF TID# 330000060 certification and datasheet Section 1.1.
Can the integrated Cortex-M0 be used for custom application code?
No. The ARM® Cortex®-M0 is reserved for Infineon's proprietary firmware handling hub control, charging logic, vendor commands, and configuration - it is not user-programmable or accessible for third-party application code execution.
Is external EEPROM mandatory for operation?
No. Pin-strapping alone enables full configuration (VID/PID, port count, BC v1.2 enable, power switch mode) at power-on. EEPROM is optional and used only for advanced customization or field firmware updates via I2C or USB vendor commands.
What is the maximum junction temperature under full 4-port load?
Per datasheet Absolute Maximum Ratings (Section 9), the maximum junction temperature is +125°C. Thermal validation in the 68-QFN package shows ≤95°C junction rise at 1 W total power dissipation with 2-layer PCB and 1-in² copper pour - well within industrial limits at +85°C ambient.
CYUSB3304-68LTXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HX3
- Package/Case:
- 68-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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)
CYUSB3304-68LTXIT FAQ
1.How can I place an order for CYUSB3304-68LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3304-68LTXIT 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 CYUSB3304-68LTXIT reliable?
The price and inventory of CYUSB3304-68LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3304-68LTXIT is usually 5 days.
3.What payment methods are accepted for CYUSB3304-68LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3304-68LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3304-68LTXIT?
CYUSB3304-68LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3304-68LTXIT 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 CYUSB3304-68LTXIT?
For technical support, including CYUSB3304-68LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3304-68LTXIT requirements.
6.How does Aetrix verify that CYUSB3304-68LTXIT is sourced from the original manufacturer or authorized distributors?
All CYUSB3304-68LTXIT 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 CYUSB3304-68LTXIT meets industry standards.
7.What is the process for return or replacement of CYUSB3304-68LTXIT?
All CYUSB3304-68LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3304-68LTXIT, 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 CYUSB3304-68LTXIT part is unused and in its original packaging.
Return procedure for CYUSB3304-68LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3304-68LTXIT Tags
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CYPD3175-24LQXQ
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SLB9670VQ20FW785XTMA1
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SLM9670AQ20FW1311XTMA1
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
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SLB9673AU20FW2613XTMA1
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