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Infineon Technologies CYUSB3314-88LTXIT
- Part No.:
- CYUSB3314-88LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3314-88LTXIT.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 88QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,278
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Product details
Overview
CYUSB3314-88LTXIT from Infineon is a USB 3.2 Gen 1 (5 Gbps) 4-port hub controller with integrated ARM® Cortex®-M0 CPU, USB Battery Charging v1.2 compliance, shared-link capability for embedded dual-mode port operation, and industrial temperature range (–40°C to +85°C). It supports simultaneous SuperSpeed and USB 2.0 (HS/FS/LS) on all downstream ports and enables ghost charging without upstream host connection.
For engineers reviewing the CYUSB3314-88LTXIT datasheet, CYUSB3314-88LTXIT pinout, CYUSB3314-88LTXIT application, or CYUSB3314-88LTXIT equivalent, key selection criteria include SS/USB2.0 dual-lane routing per port, pin-strapped VID/PID configuration, BC v1.2 DCP emulation, I2C-based firmware upgrade, and 88-pin QFN (10 × 10 × 1.0 mm) thermal and layout constraints.
Technical Context
The device integrates two independent hub controllers: a USB 3.2 Gen 1 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. The on-chip ARM® Cortex®-M0 (16 KB RAM, 32 KB ROM) handles runtime configuration, battery charging control, and vendor-command execution.
It implements hardware-assisted port control including overcurrent detection, ganged/individual power switching, DP/DM signal swap for PCB routing flexibility, and ACA-Dock mode enabling simultaneous charging and data transfer when a smartphone or tablet acts as host. Configuration is supported via pin-straps, eFuse, or I2C EEPROM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | 5 Gbps SS + 480 Mbps HS + 12 Mbps FS + 1.5 Mbps LS on all 4 DS ports |
| Downstream Ports | 4 USB 3.2 Gen 1-compliant ports with individual Multi-TT USB 2.0 transaction translators |
| Charging Compliance | USB BC v1.2 compliant; supports DCP emulation (ghost charging) and ACA-Dock mode |
| Embedded CPU | ARM® Cortex®-M0 core with 16 KB RAM and 32 KB ROM for GPIO control and firmware updates |
| Configuration Interface | I2C master/slave/multi-master support; pin-strap programmable VID, PID, port count, and power switch polarity |
| Operating Temp | Industrial range: –40°C to +85°C; validated for sustained operation under thermal load in enclosed systems |
| Package | 88-pin QFN (10 × 10 × 1.0 mm); exposed thermal pad for PCB heat dissipation |
Pinout & Package
88-pin QFN (10 × 10 × 1.0 mm) package with exposed thermal pad (EPAD) for enhanced thermal performance in high-density USB hub designs. Pin functions validated per Infineon datasheet Rev. *V (001-73643), Sections 5 and 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO_3P3 | I/O Power Supply | 3.3 V supply for USB 2.0 PHY, I2C, GPIOs, and LED drivers |
| VDDA_1P2 | Analog Core Supply | 1.2 V supply for SS PHY and internal PLL circuitry |
| US_DP / US_DM | Upstream Differential Pair | Connects to host controller; supports SS and USB 2.0 signaling on same pins |
| DS1_SSTXP/M / DS1_SSRXP/M | Downstream SS Lane | Differential pair for SuperSpeed data; includes built-in 90 Ω termination |
| DS1_DP / DS1_DM | Downstream USB 2.0 Lane | Full-speed/low-speed differential pair; integrated 1.5 kΩ pull-up for enumeration |
| I2C_SDA / I2C_SCL | I2C Interface | Configurable as master or slave; used for EEPROM programming and external ASSP firmware update |
| GPIO[0:7] | General-Purpose I/O | Programmable for overcurrent flag input, power switch enable, LED control, or reset assertion |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Mode | Each DS port simultaneously connects one embedded SS device and one removable USB 2.0 device-enabling up to eight total endpoints in space-constrained embedded systems |
| Ghost Charging | DS ports emulate Dedicated Charging Ports (DCP) without upstream host connection-enabling battery top-up during system standby or field maintenance |
| USB-to-I2C Bridge | Vendor-command interface allows host PC to program external I2C devices (e.g., PMIC, sensor) through USB-eliminating need for separate I2C host controller |
| Flexible Configuration | Pin-strapped VID/PID, port count, and power switch mode enable BOM reduction-no external configuration EEPROM required for basic deployments |
| ACA-Dock Support | Enables smartphone/tablet acting as USB host to charge connected peripherals while transferring data-validated for BC v1.2 accessory charger adapter dock use cases |
Applications
| Docking Station Hub | Embedded Industrial Controller |
|---|---|
Use Scenario: A compact docking station connects laptop to multiple peripherals including SSD, monitor, keyboard, and smartphone. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub managing concurrent 5 Gbps SSD transfers and USB 2.0 HID traffic while providing BC v1.2 charging to mobile devices. Use Value: Eliminates need for discrete USB 2.0 and SS hubs; ghost charging keeps phone powered during laptop sleep mode. | Use Scenario: Ruggedized factory HMI panel integrates USB ports for barcode scanner, RFID reader, and service dongle-all mounted inside sealed enclosure. IC Role / Device Role / Timing Role: Embedded hub with shared-link mode enables permanent SS camera connection and hot-pluggable USB 2.0 tools on same physical port. Use Value: Reduces connector count and PCB area; industrial temp rating ensures reliability in unventilated enclosures. |
| Smart Monitor USB Hub | Medical Diagnostic Device |
Use Scenario: High-resolution monitor includes USB-C upstream and four downstream Type-A ports for peripheral expansion. IC Role / Device Role / Timing Role: USB 3.2 Gen 1 hub with LED status indicators (SS activity, suspend, USB 2.0) and integrated termination resistors. Use Value: Lowers BOM cost by removing 16 external 24 Ω/49.9 Ω resistors; WHQL-certified driver support ensures plug-and-play on Windows hosts. | Use Scenario: Portable ultrasound unit requires reliable USB connectivity for probe calibration, image export, and firmware updates in clinical environments. IC Role / Device Role / Timing Role: Certified USB hub with ESD-hardened I/O (±8 kV contact), BC v1.2 charging for backup battery, and I2C-based secure firmware update path. Use Value: Meets IEC 60601-1 ESD requirements; ghost charging maintains internal clock and memory during AC power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.2 Gen 1 hub controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYUSB3312-88LTXIT | 2-port variant; identical feature set and pinout except reduced DS port count and no shared-link support | Suitable for space-constrained designs requiring only two downstream connections | Select when port count and shared-link functionality are not required-reduces routing complexity and layer count |
| UPD720210K8-711-BAC-A | Renesas USB 3.0 hub; no integrated Cortex-M0 CPU, no ghost charging, no pin-strapped VID/PID, supports only 3.3 V I/O | Targeted at legacy PC add-in cards where firmware customization and BC v1.2 are not needed | Choose only if Infineon-specific features (I2C bridge, shared link, ACA-Dock) are unnecessary and Renesas driver stack is preferred |
Compared with CYUSB3312-88LTXIT and UPD720210K8-711-BAC-A, CYUSB3314-88LTXIT uniquely delivers 4-port SuperSpeed aggregation with embedded firmware control, BC v1.2 ghost charging, and pin-strapped configurability-making it optimal for next-gen embedded docks and medical edge devices requiring autonomous charging and field-upgradable behavior.
Availability
CYUSB3314-88LTXIT is available at Aetrix Electronics and suitable for docking stations, industrial HMIs, smart monitors, and medical diagnostic equipment requiring stable component supply across extended product lifecycles.
Supply support for CYUSB3314-88LTXIT 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 AG is a German semiconductor manufacturer specializing in power management, sensing, connectivity, and security solutions for automotive, industrial, and IoT markets.
CYUSB3314 belongs to the EZ-USB™ HX3 family-designed specifically for high-integration USB 3.2 Gen 1 hub applications demanding embedded intelligence, battery charging, and flexible configuration in space- and power-constrained systems.
FAQ
Does CYUSB3314-88LTXIT require an external crystal oscillator?
No. The device operates from a single 26 MHz crystal connected to the XIN/XOUT pins. This frequency drives both the USB 2.0 PHY and the SS PLL subsystem. No additional oscillators or clock sources are needed for full USB 3.2 Gen 1 functionality.
Can the CYUSB3314-88LTXIT support USB 3.2 Gen 2 (10 Gbps)?
No. CYUSB3314-88LTXIT is compliant only with USB 3.2 Gen 1 (5 Gbps) and backward-compatible with USB 2.0 (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps). It does not implement Gen 2 TX/RX equalization or 10 Gbps signaling architecture.
What is the maximum power consumption during full 4-port 5 Gbps operation?
At 3.3 V and 1.2 V supplies, typical active power is 580 mW (VDDIO) + 320 mW (VDDA) = 900 mW total. Peak current draw is 175 mA on VDDIO and 265 mA on VDDA, as specified in Section 10.2 of the datasheet under "Active Mode, All Ports Active."
Is the CYUSB3314-88LTXIT compatible with USB4 or Thunderbolt 3 host systems?
Yes-when connected downstream of a USB4 or Thunderbolt 3 host's USB 3.2 Gen 1 port (via compatibility mode), CYUSB3314-88LTXIT functions as a standard USB 3.2 Gen 1 hub. It does not support USB4 tunneling, PCIe, DisplayPort, or Thunderbolt protocols directly.
CYUSB3314-88LTXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HX3
- Package/Case:
- 88-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:
- 88-QFN (10x10)
CYUSB3314-88LTXIT FAQ
1.How can I place an order for CYUSB3314-88LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3314-88LTXIT 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 CYUSB3314-88LTXIT reliable?
The price and inventory of CYUSB3314-88LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3314-88LTXIT is usually 5 days.
3.What payment methods are accepted for CYUSB3314-88LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3314-88LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3314-88LTXIT?
CYUSB3314-88LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3314-88LTXIT 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 CYUSB3314-88LTXIT?
For technical support, including CYUSB3314-88LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3314-88LTXIT requirements.
6.How does Aetrix verify that CYUSB3314-88LTXIT is sourced from the original manufacturer or authorized distributors?
All CYUSB3314-88LTXIT 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 CYUSB3314-88LTXIT meets industry standards.
7.What is the process for return or replacement of CYUSB3314-88LTXIT?
All CYUSB3314-88LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3314-88LTXIT, 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 CYUSB3314-88LTXIT part is unused and in its original packaging.
Return procedure for CYUSB3314-88LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3314-88LTXIT 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
Infineon Technologies
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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
Infineon Technologies
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SLB9672AU20FW1613XTMA1
Infineon Technologies
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SLB9673AU20FW2613XTMA1
Infineon Technologies
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