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Infineon Technologies CYUSB3314-88LTXC
- Part No.:
- CYUSB3314-88LTXC
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3314-88LTXC.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 88QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,369
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Product details
Overview
CYUSB3314-88LTXC 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 per port, shared-link capability for embedded dual-device attachment per port, and industrial temperature range (–40°C to +85°C). It enables compact docking stations and embedded host interfaces requiring simultaneous SuperSpeed and USB 2.0 device connectivity.
For engineers reviewing the CYUSB3314-88LTXC datasheet, CYUSB3314-88LTXC pinout, CYUSB3314-88LTXC application, or CYUSB3314-88LTXC equivalent, key selection criteria include SS/USB2.0 dual-link support per port, ghost charging behavior during upstream disconnection, I2C-based firmware upgrade capability, and 88-pin QFN package thermal and routing constraints.
Technical Context
The CYUSB3314 integrates 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 Cortex-M0 subsystem handles configuration, BC v1.2 charging control, and vendor-command execution.
Port-level intelligence includes on-chip overcurrent detection, ganged/individual power switch control, DP/DM signal swap for PCB routing flexibility, and hardware-accelerated ACA-Dock mode enabling concurrent charging and data transfer when a smartphone 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 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 DS ports, each supporting shared-link mode for simultaneous SS + USB 2.0 device attachment |
| Battery Charging | Complies with USB BC v1.2 per port; supports ghost charging (DCP emulation without upstream host) and ACA-Dock mode |
| Embedded Processor | ARM Cortex-M0 core with 16 KB RAM and 32 KB ROM for runtime configuration, GPIO control, and firmware updates |
| Configuration Interface | I2C master/slave/multi-master support; enables EEPROM programming via USB and external I2C master initialization |
| Operating Temperature | –40°C to +85°C industrial grade, validated for sustained operation in enclosed docking and set-top box environments |
| Package | 88-pin QFN (10 mm × 10 mm × 1.0 mm), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3 |
Pinout & Package
88-pin QFN (10 mm × 10 mm × 1.0 mm) with exposed thermal pad; pin-compatible with other CYUSB33xx variants in same package family. Pin functions verified per Infineon datasheet 001-73643 Rev. *V Sections 5 and 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3P3 | 3.3 V Power Supply | Supplies I/O and USB 2.0 PHY circuitry; requires local 3.3 V regulation and decoupling |
| VDD_1P2 | 1.2 V Core Power | Powers Cortex-M0 core and SS PHY logic; tight tolerance required for stable 5 Gbps link operation |
| US_DP / US_DM | Upstream Differential Pair | Connects to host controller; supports SS and USB 2.0 signaling on same physical lines |
| DS1_SSTXP/M / DS1_SSRXP/M | Downstream SS Lane | SuperSpeed transmit/receive pair for DS port 1; routed as controlled-impedance differential pair |
| DS1_DP / DS1_DM | Downstream USB 2.0 Lane | High-Speed/Full-Speed differential pair; supports shared-link mode with DS1_SSTXP/M |
| I2C_SDA / I2C_SCL | I2C Interface | Configurable as master or slave; used for EEPROM programming, firmware update, and external ASSP control |
| GPIO[7:0] | General-Purpose I/O | Programmable for overcurrent fault indication, power switch enable, LED status, or custom system signaling |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Architecture | Each DS port physically connects one SuperSpeed device and one USB 2.0 device simultaneously-enabling up to eight total endpoints in embedded systems without additional hubs |
| Ghost Charging | Automatically configures each DS port as a Dedicated Charging Port (DCP) when upstream host is absent-maintaining 1.5 A charging without host negotiation |
| USB-to-I2C Bridge | Vendor-command interface allows host PC to program external I2C devices (e.g., PMIC, sensor) through the hub's USB interface-eliminating separate I2C host controller |
| Pin-Strap Configuration | Hardware-selectable VID/PID, port count, power switch polarity, and BC v1.2 enablement-reducing need for external EEPROM in cost-sensitive designs |
| ACA-Dock Mode | Enables smartphone or tablet acting as USB host to deliver both 5 V power and high-speed data over single USB-C cable-required for certified accessory docks |
Applications
| Docking Station | Embedded Industrial Controller |
|---|---|
Use Scenario: Desktop docking station connecting laptop to multiple peripherals including SSD, webcam, and Ethernet adapter. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub managing concurrent 5 Gbps storage traffic and USB 2.0 HID/control signals. Use Value: Shared-link mode allows direct connection of both SuperSpeed SSD and legacy USB 2.0 keyboard/mouse to same port-reducing PCB layer count and BOM cost. | Use Scenario: Programmable logic controller (PLC) with field-service USB port for firmware update and diagnostics. IC Role / Device Role / Timing Role: Isolated USB interface hub providing BC v1.2 charging and robust ESD protection for service technician tools. Use Value: Ghost charging ensures service tablet remains powered during firmware upload-even when PLC is disconnected from host PC. |
| Smart Monitor Hub | Set-Top Box Peripheral Expansion |
Use Scenario: 4K monitor with built-in USB hub for keyboard, mouse, and webcam-powered via USB-C from connected PC. IC Role / Device Role / Timing Role: Downstream port manager with integrated LED indicators for SS/USB2.0 activity and suspend state. Use Value: On-chip LED drivers eliminate external driver ICs; pin-strapped configuration avoids EEPROM, simplifying manufacturing calibration. | Use Scenario: Cable set-top box adding USB printer, external HDD, and IR blaster via front-panel USB ports. IC Role / Device Role / Timing Role: Multi-TT USB 2.0 hub ensuring non-blocking HID and bulk transfers while maintaining 5 Gbps SSD streaming on separate SS lane. Use Value: Four independent transaction translators prevent bandwidth contention between IR remote commands and video recording data streams. |
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 |
|---|---|---|---|
| CYUSB3312-88LTXC | 2-port variant with identical 88-pin QFN package, same Cortex-M0 subsystem and BC v1.2 support, but lacks shared-link capability | Suitable for space-constrained designs needing only two DS ports and no dual-device attachment per port | Select when port count and shared-link functionality are not required-reduces system complexity and cost |
| UPD720210K8-711-BAC-A | Renesas USB 3.0 hub with 4 DS ports, no integrated MCU, no ghost charging, no shared-link, supports only pin-strap configuration | Targeted at legacy Windows desktop hubs where firmware customization and battery charging are not needed | Choose when Microsoft WHQL certification and minimal firmware overhead are priorities over embedded intelligence and charging features |
Compared with CYUSB3312-88LTXC, the CYUSB3314 offers double the downstream port count and shared-link capability; versus UPD720210, it adds Cortex-M0 programmability, ghost charging, and ACA-Dock support-making it optimal for intelligent, power-aware embedded USB expansion.
Availability
CYUSB3314-88LTXC is available at Aetrix Electronics and suitable for docking stations, embedded industrial controllers, smart monitors, and set-top box peripheral expansion requiring stable component supply, industrial temperature operation, and USB BC v1.2 compliance.
Supply support for CYUSB3314-88LTXC 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 MCUs, and connectivity solutions, with global R&D and manufacturing infrastructure.
The EZ-USB™ HX3 product line delivers highly integrated, firmware-programmable USB hub controllers targeting embedded systems requiring intelligent power delivery, multi-protocol support, and reduced external component count.
FAQ
Does CYUSB3314-88LTXC support USB 3.2 Gen 2 (10 Gbps)?
No. The CYUSB3314 is compliant with USB 3.2 Gen 1 (5 Gbps) and fully backward-compatible with USB 3.0 and USB 2.0 specifications. It does not implement the 10 Gbps lane rate, encoding, or protocol extensions defined in USB 3.2 Gen 2. Its SS PHY is designed exclusively for 5 Gbps operation per lane.
Can the integrated Cortex-M0 be used to run custom application code?
Yes-the Cortex-M0 subsystem provides 16 KB of on-chip RAM and access to 32 KB of ROM containing boot code and USB stack primitives. Customers may load custom firmware via I2C EEPROM or USB-based ISP to implement proprietary GPIO control, charging logic, or vendor-specific USB descriptors.
What is the maximum allowable junction temperature for continuous operation?
The CYUSB3314-88LTXC has a maximum junction temperature of +125°C, validated under industrial ambient conditions (–40°C to +85°C) with proper PCB thermal design. Thermal performance depends on copper area under the exposed pad, number of thermal vias, and airflow; typical θJA is 32°C/W in standard 4-layer board layout.
Is USB-IF certification available for this specific part number?
Yes-CYUSB3314-88LTXC inherits the USB-IF Certified Hub status (TID# 330000060 and 30000074) from the EZ-USB™ HX3 family. Certification covers electrical compliance, protocol conformance, and interoperability testing across all four downstream ports at USB 3.2 Gen 1, HS, FS, and LS speeds.
CYUSB3314-88LTXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HX3
- Package/Case:
- 88-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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 88-QFN (10x10)
CYUSB3314-88LTXC FAQ
1.How can I place an order for CYUSB3314-88LTXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3314-88LTXC 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 CYUSB3314-88LTXC reliable?
The price and inventory of CYUSB3314-88LTXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3314-88LTXC is usually 5 days.
3.What payment methods are accepted for CYUSB3314-88LTXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3314-88LTXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3314-88LTXC?
CYUSB3314-88LTXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3314-88LTXC 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 CYUSB3314-88LTXC?
For technical support, including CYUSB3314-88LTXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3314-88LTXC requirements.
6.How does Aetrix verify that CYUSB3314-88LTXC is sourced from the original manufacturer or authorized distributors?
All CYUSB3314-88LTXC 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 CYUSB3314-88LTXC meets industry standards.
7.What is the process for return or replacement of CYUSB3314-88LTXC?
All CYUSB3314-88LTXC units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3314-88LTXC, 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 CYUSB3314-88LTXC part is unused and in its original packaging.
Return procedure for CYUSB3314-88LTXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3314-88LTXC Tags
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CYPD3175-24LQXQ
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SLB9672VU20FW1523XTMA1
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SLB9670VQ20FW785XTMA1
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AT97SC3204-U2A1A-10
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SLM9670AQ20FW1311XTMA1
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
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SLB9673AU20FW2613XTMA1
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