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Infineon Technologies CYUSB3304-68LTXCT
- Part No.:
- CYUSB3304-68LTXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3304-68LTXCT.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
CYUSB3304-68LTXCT 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 Battery Charging v1.2 compliance, shared-link capability for embedded dual-device per port, and industrial temperature range (–40°C to +85°C). It enables compact docking stations and embedded host interfaces requiring simultaneous SS/HS/FS/LS support.
For engineers reviewing the CYUSB3304-68LTXCT datasheet, CYUSB3304-68LTXCT pinout, CYUSB3304-68LTXCT application, or CYUSB3304-68LTXCT equivalent, this device delivers verified USB 3.0 hub functionality with on-chip configuration via pin-straps, I2C EEPROM, or eFuse - critical for BOM reduction in space-constrained industrial and consumer dock designs.
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 (Multi-TT), L0–L3 power management, and suspend/resume signaling. It integrates termination, pull-up/down resistors, and supports DP/DM swap for flexible PCB routing.
Its Cortex®-M0 subsystem manages firmware-based battery charging control, vendor-command USB-to-I2C bridging, string descriptor handling, and shared-link arbitration. Configuration is supported via pin-straps (VID, port count, power switch ganging), I2C slave/master modes, or eFuse - enabling field-upgradable, application-specific tuning without hardware change.
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 - all ports fully backward-compatible. |
| Downstream Ports | 4 × USB 3.0-compliant DS ports with individual Multi-TT and independent SS/USB 2.0 PHYs. |
| Battery Charging | USB BC v1.2 compliant per port; ghost charging (DCP emulation when US port unconnected) and ACA-Dock support enabled. |
| Embedded CPU | ARM® Cortex®-M0 core with 16 KB RAM and 32 KB ROM - executes firmware for GPIO control, overcurrent detection, and vendor commands. |
| Configuration Interface | I2C master/slave/multi-master; supports EEPROM programming, external ASSP firmware upgrade, and dynamic descriptor updates via USB. |
| Operating Temp | –40°C to +85°C industrial grade - validated for continuous operation in enclosed docking systems and set-top boxes. |
| Package | 68-pin QFN (8 mm × 8 mm × 1.0 mm), exposed thermal pad - optimized for thermal dissipation in high-density USB hub PCB layouts. |
Pinout & Package
68-pin QFN (8 × 8 × 1.0 mm) with exposed thermal pad; RoHS-compliant, lead-free, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO_3P3 | I/O Power Supply | 3.3 V supply for USB 2.0 PHY, GPIOs, and I2C interface - decoupling required per datasheet layout guidelines. |
| VDDA_1P2 | Analog Core Supply | 1.2 V analog supply for SS PHY and clock PLL - low-noise regulation essential for 5 Gbps signal integrity. |
| US_DP / US_DM | Upstream Differential Pair | Connects to host controller; supports SS/HS/FS/LS; internal termination eliminates external resistors. |
| DS1_SSTXP / DS1_SSTXM / DS1_SSRXP / DS1_SSRXM | Port 1 SuperSpeed Lane | Dedicated differential pair for 5 Gbps data; each DS port has independent SS TX/RX lanes. |
| DS1_DMP / DS1_DMM | Port 1 USB 2.0 Lane | Full-speed/low-speed differential pair; includes integrated 1.5 kΩ pull-up for LS device enumeration. |
| I2C_SDA / I2C_SCL | I2C Interface | Open-drain bidirectional bus for configuration EEPROM, external ASSP programming, or host-side parameter tuning. |
| GPIO[0:7] | Configurable General-Purpose I/O | Programmable as power enable, overcurrent detect input, LED drivers, or custom control signals via firmware. |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Mode | Each DS port simultaneously connects one embedded SS device and one removable USB 2.0 device - enables up to eight total endpoints in embedded systems without additional hubs. |
| Ghost Charging | DS ports emulate Dedicated Charging Ports (DCP) when upstream host is disconnected - maintains 1.5 A charging for peripherals during host sleep or power-off. |
| Vendor Command USB-to-I2C Bridge | Enables host PC to program external ASSPs or EEPROMs over USB without dedicated I2C master hardware - reduces system component count. |
| Pin-Strap Configuration | Hardware-selectable VID, port count, power switch ganging, and BC v1.2 enable/disable - eliminates boot-time software dependency for factory-set configurations. |
| WHQL & OS Compatibility | Microsoft WHQL-certified for Windows XP–8.1; native Linux kernel 3.11+ and macOS 10.9+ support - no driver development required for mainstream platforms. |
Applications
| Docking Station Hub | Embedded Industrial Host |
|---|---|
Use Scenario: Desktop docking station connecting laptop to multiple peripherals including SSD, monitor, keyboard, and smartphone. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub controller managing concurrent 5 Gbps SSD transfers and 480 Mbps HID traffic while providing BC v1.2 charging. Use Value: Eliminates need for discrete USB 2.0/3.0 hub ICs and external charging ICs - reduces layer count and BOM cost by 30% versus multi-chip solutions. | Use Scenario: Factory automation controller with onboard USB ports for firmware update dongles, barcode scanners, and service diagnostics tools. IC Role / Device Role / Timing Role: Embedded host-side hub enabling hot-plug detection, shared-link mode for dual-purpose ports, and secure firmware updates via vendor-command I2C bridge. Use Value: Supports field-reprogrammable configuration via I2C EEPROM - avoids costly firmware reflash cycles during production line setup or maintenance. |
| Smart Monitor USB Hub | Set-Top Box Peripheral Interface |
Use Scenario: 4K smart monitor with integrated USB hub for keyboard, webcam, and storage drive connectivity alongside display data. IC Role / Device Role / Timing Role: USB 3.2 Gen 1 hub with low-latency SS/HS switching and integrated LED indicators for suspend/SS/USB 2.0 status. Use Value: Integrated termination and pull resistors reduce passive count by 12 components per port - improves signal integrity and simplifies 8-layer PCB routing. | Use Scenario: Cable set-top box with front-panel USB for media playback, remote diagnostics, and accessory charging. IC Role / Device Role / Timing Role: Industrial-grade hub supporting ghost charging during standby and ACA-Dock mode for tablet-as-host media streaming. Use Value: Maintains 1.5 A charging on all DS ports even when main SoC is powered down - extends accessory runtime without auxiliary power rails. |
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 |
|---|---|---|---|
| CYUSB3314-88LTXC | 88-pin QFN package; adds pin-strap configuration and port indicators; same 4-port SS/USB 2.0 architecture. | Preferred where board layout allows larger footprint and visual status feedback (LEDs) is required. | Select for designs needing configurable VID/PID via pins and real-time port activity indication without firmware overhead. |
| UPD720210K8-701-BAC-A | Renesas USB 3.0 hub; no integrated Cortex-M0 CPU; no ghost charging or shared-link mode; requires external EEPROM for configuration. | Suitable for cost-sensitive PC peripheral hubs where embedded intelligence and BC v1.2 are not required. | Choose only if application does not require firmware-upgradable charging profiles, USB-to-I2C bridging, or dual-device per port capability. |
Compared with CYUSB3314-88LTXC, the CYUSB3304-68LTXCT offers identical core hub functionality in a smaller 68-QFN package but omits pin-strap configurability and LED drivers; versus UPD720210, it provides integrated microcontroller resources and advanced charging features at higher unit cost but lower system-level BOM and firmware complexity.
Availability
CYUSB3304-68LTXCT is available at Aetrix Electronics and suitable for docking stations, embedded industrial hosts, smart monitors, and set-top boxes requiring stable component supply across extended product lifecycles.
Supply support for CYUSB3304-68LTXCT 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 ICs for automotive, industrial, and consumer markets.
The EZ-USB™ HX3 product line delivers highly integrated, firmware-programmable USB 3.0 hub controllers targeting space-constrained, feature-rich docking, embedded host, and multimedia peripheral applications.
FAQ
Does CYUSB3304-68LTXCT support USB 3.2 Gen 2 (10 Gbps)?
No. The CYUSB3304-68LTXCT is compliant with USB 3.2 Gen 1 (5 Gbps) and fully backward-compatible with USB 2.0 High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps). It does not implement the Gen 2 superspeedPlus protocol or 10 Gbps PHY.
Can the integrated Cortex-M0 be used for custom application code?
Yes - the ARM® Cortex®-M0 subsystem includes 16 KB of on-chip RAM and 32 KB of ROM, and supports firmware loading from I2C EEPROM or external I2C master. Infineon provides SDK and Blaster Plus tooling to develop and deploy custom GPIO control, charging logic, and vendor-command handlers.
Is external USB 2.0 termination required?
No. The CYUSB3304-68LTXCT integrates all required USB 2.0 termination resistors (1.5 kΩ pull-up for LS, 15 kΩ pull-down for HS/FS), eliminating the need for external resistors on US and DS port D+/D− lines - confirmed in Section 10.1 of the datasheet.
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 85°C junction rise at 1 W total power dissipation - well within spec for industrial ambient conditions up to +85°C with standard 2 oz copper PCB cooling.
CYUSB3304-68LTXCT 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-QFN (8x8)
CYUSB3304-68LTXCT FAQ
1.How can I place an order for CYUSB3304-68LTXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3304-68LTXCT 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 CYUSB3304-68LTXCT reliable?
The price and inventory of CYUSB3304-68LTXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3304-68LTXCT is usually 5 days.
3.What payment methods are accepted for CYUSB3304-68LTXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3304-68LTXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3304-68LTXCT?
CYUSB3304-68LTXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3304-68LTXCT 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 CYUSB3304-68LTXCT?
For technical support, including CYUSB3304-68LTXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3304-68LTXCT requirements.
6.How does Aetrix verify that CYUSB3304-68LTXCT is sourced from the original manufacturer or authorized distributors?
All CYUSB3304-68LTXCT 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 CYUSB3304-68LTXCT meets industry standards.
7.What is the process for return or replacement of CYUSB3304-68LTXCT?
All CYUSB3304-68LTXCT units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3304-68LTXCT, 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 CYUSB3304-68LTXCT part is unused and in its original packaging.
Return procedure for CYUSB3304-68LTXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3304-68LTXCT Tags
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CYPD3175-24LQXQ
Infineon Technologies
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SLB9672VU20FW1523XTMA1
Infineon Technologies
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SLB9670VQ20FW785XTMA1
Infineon Technologies
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SLB9672XU20FW1523XTMA1
Infineon Technologies
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SLB9673XU20FW2613XTMA1
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CYPD3125-40LQXIT
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AT97SC3204-U2A1A-20
Microchip Technology
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AT97SC3204-U2A1A-10
Microchip Technology
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SLM9670AQ20FW1311XTMA1
Infineon Technologies
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
Infineon Technologies
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SLB9673AU20FW2613XTMA1
Infineon Technologies
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