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Infineon Technologies CYUSB3324-88LTXIT
- Part No.:
- CYUSB3324-88LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3324-88LTXIT.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 88QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,855
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Product details
Overview
CYUSB3324-88LTXIT from Infineon is a USB 3.2 Gen 1 (5 Gbps) hub controller with four downstream USB 3.0 ports, integrated ARM® Cortex®-M0 CPU (16 KB RAM, 32 KB ROM), and industrial temperature range (–40°C to +85°C). It supports USB Battery Charging v1.2, ghost charging, shared link for embedded dual-device per port, and pin-strapped configuration. Used in docking stations and digital TVs requiring multi-speed USB connectivity and embedded power management.
For engineers reviewing the CYUSB3324-88LTXIT datasheet, CYUSB3324-88LTXIT pinout, CYUSB3324-88LTXIT application, or CYUSB3324-88LTXIT equivalent, this page delivers verified technical context, package mapping, real-world use value, and validated alternative selection guidance - all grounded in Infineon's official documentation and product options table.
Technical Context
The CYUSB3324 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 transaction translators (Multi-TT), L0–L3 power states, and suspend/resume signaling. Its integrated Cortex-M0 handles firmware-upgradable configuration, BC v1.2 charging control, and vendor-command-based USB-to-I2C bridging.
Pin-strap configuration enables static setup of VID/PID, per-port charging enable, active port count, non-removable device count, ganged/individual power switching, and DP/DM signal swap. The device supports I2C master/slave/multi-master modes for EEPROM programming and external ASSP firmware updates via USB.
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 DS ports with dedicated Multi-TT USB 2.0 transaction translators |
| Charging Compliance | USB Battery Charging v1.2 (BC v1.2) on all DS ports, including ghost charging and ACA-Dock support |
| Embedded CPU | ARM® Cortex®-M0 with 16 KB RAM and 32 KB ROM for runtime configuration, GPIO control, and firmware upgrades |
| Configuration Interface | Pin-straps + I2C (slave/master/multi-master) + eFuse for flexible, field-upgradable settings |
| Operating Temperature | Industrial grade: –40°C to +85°C, qualified for embedded systems in harsh thermal environments |
| Package | 88-pin QFN (10 mm × 10 mm × 1.0 mm), lead-free and RoHS-compliant |
Pinout & Package
88-pin QFN (10 × 10 × 1.0 mm), exposed thermal pad, RoHS-compliant, industrial temperature grade.
| 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 5 Gbps SS and 480 Mbps HS signaling |
| DS1_DP / DS1_DM … DS4_DP / DS4_DM | Downstream Differential Pairs | Four independent USB 3.0 ports; each supports simultaneous SS + USB 2.0 links |
| I2C_SDA / I2C_SCL | I2C Interface | Configurable as master or slave; used for EEPROM programming and external ASSP firmware update |
| PWR_EN1–PWR_EN4 | Port Power Enable Outputs | Individual or ganged control of external power switches per DS port |
| OVR_CUR1–OVR_CUR4 | Overcurrent Detection Inputs | Active-low signals indicating overcurrent condition on respective DS port |
| LED_SUSP / LED_SS / LED_HS | Status Indicator Outputs | Drive external LEDs for suspend, SuperSpeed, and High-Speed activity per port |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Mode | Each DS port connects simultaneously to one embedded SS device and one removable USB 2.0 device-enabling up to eight total device connections without additional hubs |
| Ghost Charging | DS ports emulate Dedicated Charging Ports (DCP) when upstream host is disconnected, enabling battery charging without data connection |
| USB-to-I2C Bridge | Vendor-command interface allows host PC to program external I2C devices (e.g., EEPROM, sensors) through USB, eliminating separate I2C host hardware |
| ACA-Dock Support | Enables smartphones/tablets acting as BC v1.2 hosts to charge connected peripherals while maintaining data transfer over USB 2.0 |
| Pin-Strap Configuration | Hardware-selectable VID/PID, port count, charging enable, and power switch polarity-reducing need for external configuration memory |
Applications
| Docking Station | Embedded Monitor Hub |
|---|---|
Use Scenario: A compact desktop dock connects laptop to multiple peripherals including SSD, keyboard, webcam, and smartphone. IC Role / Device Role / Timing Role: CYUSB3324 acts as the central USB 3.2 Gen 1 hub, managing concurrent 5 Gbps SSD transfers and 480 Mbps HID/video streams while providing BC v1.2 charging to the phone. Use Value: Shared link mode allows simultaneous connection of internal eMMC storage (SS) and external USB 2.0 mouse (FS), maximizing port utility without cascading hubs. | Use Scenario: A smart monitor integrates USB-C upstream and four downstream USB-A ports for peripheral passthrough and built-in speaker/headset charging. IC Role / Device Role / Timing Role: Serves as embedded hub with ghost charging enabled-delivering 1.5 A to connected headphones even when the source laptop is powered off. Use Value: Pin-strapped configuration eliminates external EEPROM, reducing BOM cost and PCB area while ensuring deterministic boot behavior. |
| Set-Top Box Expansion | Industrial Handheld Cradle |
Use Scenario: A cable/satellite STB adds USB 3.0 storage recording and peripheral support via front-panel ports. IC Role / Device Role / Timing Role: Manages USB 2.0 IR blaster and FS camera alongside 5 Gbps HDD recording, using Multi-TT to prevent bandwidth contention between low- and high-speed devices. Use Value: Integrated overcurrent detection on each DS port prevents system shutdown during hot-plug events-critical for consumer-facing front-panel ports. | Use Scenario: Rugged handheld scanner cradle provides data sync, firmware update, and battery charging for field-deployed units. IC Role / Device Role / Timing Role: Functions as robust hub with industrial temp rating and ACA-Dock support-allowing tablet-hosted scanning apps to charge the cradled unit while transferring image batches. Use Value: Cortex-M0 firmware enables custom GPIO sequencing for safe hot-swap detection and controlled power ramp-up, meeting MIL-STD-810G vibration requirements. |
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 |
|---|---|---|---|
| CYUSB3314-88LTXIT | Same 88-pin QFN package and feature set, but supports only 2 DS ports instead of 4; identical BC v1.2, ghost charging, and Cortex-M0 subsystem | Suitable for space-constrained designs needing fewer downstream ports, such as compact monitors or portable docks | Select when port count reduction lowers system cost and PCB routing complexity without sacrificing charging or firmware flexibility |
| CYUSB3326-88LTXIT | Adds two extra DS ports (6 total), including two shared-link-capable ports; same 88-QFN package and industrial temp rating | Required for high-density embedded systems like multi-peripheral kiosks or medical imaging consoles needing >4 simultaneous USB connections | Choose when shared-link expansion beyond four ports is mandatory, accepting higher pin-count routing and firmware configuration overhead |
Compared with CYUSB3314-88LTXIT, CYUSB3324 offers double the downstream port count without increasing package size; versus CYUSB3326, it reduces pin complexity and firmware footprint while retaining full BC v1.2 and ghost charging functionality for mainstream 4-port applications.
Availability
CYUSB3324-88LTXIT is available at Aetrix Electronics and suitable for docking stations, embedded monitors, set-top boxes, and industrial handheld cradles requiring stable component supply, industrial temperature operation, and USB 3.2 Gen 1 compliance.
Supply support for CYUSB3324-88LTXIT 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 is a German semiconductor manufacturer specializing in power management, sensing, connectivity, and security solutions for automotive, industrial, and IoT markets.
The EZ-USB™ HX3 product line delivers highly configurable, USB-IF-certified hub controllers optimized for embedded systems where space, power efficiency, and firmware-upgradable charging intelligence are critical design constraints.
FAQ
Does CYUSB3324-88LTXIT require an external EEPROM for basic operation?
No. CYUSB3324-88LTXIT supports pin-strap configuration for core parameters including VID/PID, port count, and charging enable-enabling full functionality without external memory. An I2C EEPROM is optional for advanced string descriptors or dynamic reconfiguration.
Can CYUSB3324-88LTXIT operate in USB 2.0-only mode without SuperSpeed negotiation?
Yes. The device automatically negotiates USB 2.0 fallback on any port when SuperSpeed signaling fails or is unsupported by the attached device. All four ports retain full HS/FS/LS compatibility independently of SS link status.
What is the maximum sustained current per downstream port under BC v1.2 DCP mode?
Each DS port delivers up to 1.5 A in Dedicated Charging Port (DCP) emulation mode, compliant with USB Battery Charging v1.2 Section 3.2.3. Current is limited by external power switch ratings and board-level thermal design-not by the CYUSB3324 itself.
Is the ARM® Cortex®-M0 firmware accessible for customer modification?
Yes. Infineon provides the Blaster Plus tool and SDK for custom firmware development. Customers may modify GPIO behavior, LED logic, charging profiles, and vendor-command handlers-subject to licensing terms in the EZ-USB™ HX3 Software Development Kit.
CYUSB3324-88LTXIT 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)
CYUSB3324-88LTXIT FAQ
1.How can I place an order for CYUSB3324-88LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3324-88LTXIT 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 CYUSB3324-88LTXIT reliable?
The price and inventory of CYUSB3324-88LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3324-88LTXIT is usually 5 days.
3.What payment methods are accepted for CYUSB3324-88LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3324-88LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3324-88LTXIT?
CYUSB3324-88LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3324-88LTXIT 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 CYUSB3324-88LTXIT?
For technical support, including CYUSB3324-88LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3324-88LTXIT requirements.
6.How does Aetrix verify that CYUSB3324-88LTXIT is sourced from the original manufacturer or authorized distributors?
All CYUSB3324-88LTXIT 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 CYUSB3324-88LTXIT meets industry standards.
7.What is the process for return or replacement of CYUSB3324-88LTXIT?
All CYUSB3324-88LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3324-88LTXIT, 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 CYUSB3324-88LTXIT part is unused and in its original packaging.
Return procedure for CYUSB3324-88LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3324-88LTXIT Tags
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SLM9670AQ20FW1311XTMA1
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SLB9672XU20FW1613XTMA1
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SLB9673AU20FW2613XTMA1
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