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Infineon Technologies CYUSB3324-88LTXI
- Part No.:
- CYUSB3324-88LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3324-88LTXI.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 88QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,303
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Product details
Overview
CYUSB3324-88LTXI 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 BC v1.2 charging, shared link for embedded dual-mode port operation, and ghost charging for DCP emulation without upstream host connection - deployed in docking stations and digital TVs.
For engineers reviewing the CYUSB3324-88LTXI datasheet, CYUSB3324-88LTXI pinout, CYUSB3324-88LTXI application, or CYUSB3324-88LTXI equivalent, key selection criteria include SS/USB 2.0 dual-link power management (U0–U3/L0–L3), Multi-TT transaction translation per port, I2C master/slave configurability, and 88-pin QFN package compatibility with high-density PCB routing.
Technical Context
The device integrates two independent hub controllers: an SS hub supporting full-duplex 5 Gbps operation with U0–U3 link states, and a USB 2.0 hub with four dedicated transaction translators (one per DS port), L0–L3 power states, and remote wake-up signaling. The on-chip Cortex-M0 manages configuration, battery charging logic, and vendor-command execution.
Port control includes ganged/individual power switching, overcurrent detection, VBUS monitoring, and LED status signaling per port. Configuration is supported via pin-straps (VID/PID, port count, charging enable), eFuse, or I2C EEPROM - enabling flexible BOM optimization without external configuration ICs.
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 - enables concurrent HS/FS/LS device connections per port |
| Power Management | SS U0/U1/U2/U3 and USB 2.0 L0/L1/L2/L3 states - reduces system idle power without sacrificing resume latency |
| Charging Compliance | USB Battery Charging v1.2 on all DS ports - supports DCP, CDP, and ACA-Dock modes for smartphone/tablet host charging |
| Embedded CPU | ARM Cortex-M0 with 16 KB RAM + 32 KB ROM - executes firmware for GPIO control, descriptor handling, and I2C bridge operations |
| Configuration Interface | I2C master/slave/multi-master support - enables in-system EEPROM programming and shared bus coordination with other masters |
| Operating Temperature | –40°C to +85°C industrial grade - validated for sustained operation in enclosed docking systems and set-top boxes |
Pinout & Package
Package: 88-pin QFN (10 mm × 10 mm × 1.0 mm), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| US_DP / US_DM | Upstream differential pair | Connects to host controller; supports SS + USB 2.0 signaling on single physical interface |
| DS1_DP / DS1_DM … DS4_DP / DS4_DM | Downstream differential pairs | Four independent USB 3.0 ports; each supports simultaneous SS and USB 2.0 link operation |
| I2C_SDA / I2C_SCL | I2C bidirectional interface | Configures device via EEPROM or external master; supports ISP of connected EEPROM over USB |
| PWR_EN1–PWR_EN4 | Port power enable outputs | Drives external power switches; configurable as ganged or per-port with polarity selection |
| LED_SUSP / LED_SS / LED_HS | Status indicator drivers | Directly drives LEDs for suspend, SuperSpeed, and USB 2.0 activity - no external logic required |
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 - increases effective port count to eight without adding controllers |
| Ghost Charging | DS ports emulate Dedicated Charging Ports (DCP) when upstream host is disconnected - enables battery top-up in docked tablet/kiosk mode |
| Vendor Command USB-to-I2C Bridge | Allows host PC to issue vendor-defined USB requests that translate to I2C transactions - enables firmware update of external ASSPs over USB |
| Pin-Strap Configuration | Hardware-selectable VID, PID, port count, charging enable, and power switch mode - eliminates need for external configuration EEPROM in cost-sensitive designs |
Applications
| Docking Station | Smart Monitor |
|---|---|
Use Scenario: Desktop expansion unit connecting laptop to peripherals including SSD, Ethernet, and display via single USB-C cable. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub managing bandwidth allocation, link power state transitions, and BC v1.2 charging negotiation across four downstream ports. Use Value: Enables simultaneous 5 Gbps data transfer and 900 mA charging per port while maintaining WHQL-certified Windows driver compatibility. | Use Scenario: Integrated monitor with USB upstream for host connectivity and multiple downstream ports for keyboard, webcam, and flash drive. IC Role / Device Role / Timing Role: Embedded hub controller providing USB 2.0/3.0 coexistence, LED status feedback, and automatic port numbering based on plug detection. Use Value: Reduces bill-of-material by integrating termination, pull-ups, and power switch control - eliminating six discrete resistors and four MOSFET drivers. |
| Digital TV Back Panel Hub | Industrial Handheld Cradle |
Use Scenario: TV rear-panel USB hub supporting media playback from USB storage and firmware updates via service port. IC Role / Device Role / Timing Role: Robust hub controller operating at –40°C to +85°C with integrated overcurrent protection and VBUS fault detection per port. Use Value: Ensures reliable hot-plug operation under varying ambient conditions and prevents damage from shorted USB cables in consumer living-room environments. | Use Scenario: Rugged cradle for barcode scanners or mobile computers requiring data sync and battery charging during docked operation. IC Role / Device Role / Timing Role: Dual-role hub supporting ACA-Dock mode - allows handheld to act as USB host while receiving power from cradle's wall adapter. Use Value: Delivers 1.5 A total charging current across DS ports with Apple charging protocol support - extends field-deployed device uptime without separate chargers. |
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 |
|---|---|---|---|
| CYUSB3314-88LTXI | Same 88-pin QFN package and feature set, but lacks pin-strap support - requires I2C EEPROM for configuration | Suitable for designs where firmware-controlled configuration is preferred over hardware strapping | Select when design flexibility and post-production reconfiguration outweigh BOM simplification needs |
| UPD720210K8-711-BAC-A | Renesas USB 3.0 hub with 4 DS ports; no integrated Cortex-M0 CPU or ghost charging; supports only USB 2.0 LPM (no U-states) | Targeted at cost-sensitive PC peripheral hubs without embedded charging or firmware customization requirements | Choose when basic USB 3.0 hub functionality suffices and advanced features like vendor commands or ACA-Dock are unnecessary |
Compared with CYUSB3314-88LTXI, CYUSB3324-88LTXI adds pin-strap configurability for faster bring-up and lower component count; versus UPD720210, it delivers integrated charging intelligence, firmware upgradability, and industrial-grade thermal performance - critical for embedded dock and kiosk deployments.
Availability
CYUSB3324-88LTXI is available at Aetrix Electronics and suitable for docking stations, smart monitors, digital TVs, and industrial handheld cradles requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CYUSB3324-88LTXI 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 applications.
CYUSB3324 belongs to the EZ-USB™ HX3 family - designed specifically for high-integration USB 3.2 Gen 1 hub applications demanding embedded intelligence, robust charging, and flexible configuration in space-constrained industrial and consumer systems.
FAQ
Does CYUSB3324-88LTXI support USB 3.2 Gen 2 (10 Gbps)?
No. CYUSB3324-88LTXI complies strictly with USB 3.2 Gen 1 (5 Gbps) and USB 2.0 specifications. Its SS PHY and link layer are architected for 5 Gbps operation only, with no support for 10 Gbps encoding, lane aggregation, or Gen 2-specific U2/U3 exit timing.
Can the integrated Cortex-M0 be used for custom application code?
No. The ARM Cortex-M0 is reserved for Infineon's proprietary firmware controlling hub operation, charging logic, and configuration management. It is not user-programmable; external microcontrollers must interface via I2C or USB vendor commands for custom behavior.
What is the maximum total current supported across all downstream ports?
The device itself does not regulate current; it controls external power switches. Each DS port supports up to 900 mA per BC v1.2, with total system current limited by the external power switch ratings and board-level thermal design - typical reference designs use 1.5 A total across four ports.
Is the 88-pin QFN package lead-free and RoHS-compliant?
Yes. CYUSB3324-88LTXI is manufactured in a lead-free, RoHS-compliant 88-pin QFN package (10 mm × 10 mm × 1.0 mm) with NiPdAu terminal finish, qualified per JEDEC J-STD-020 moisture sensitivity level 3 and IPC/JEDEC J-STD-033 handling requirements.
CYUSB3324-88LTXI 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 88-QFN (10x10)
CYUSB3324-88LTXI FAQ
1.How can I place an order for CYUSB3324-88LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3324-88LTXI 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 CYUSB3324-88LTXI reliable?
The price and inventory of CYUSB3324-88LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3324-88LTXI is usually 5 days.
3.What payment methods are accepted for CYUSB3324-88LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3324-88LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3324-88LTXI?
CYUSB3324-88LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3324-88LTXI 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 CYUSB3324-88LTXI?
For technical support, including CYUSB3324-88LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3324-88LTXI requirements.
6.How does Aetrix verify that CYUSB3324-88LTXI is sourced from the original manufacturer or authorized distributors?
All CYUSB3324-88LTXI 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 CYUSB3324-88LTXI meets industry standards.
7.What is the process for return or replacement of CYUSB3324-88LTXI?
All CYUSB3324-88LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3324-88LTXI, 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 CYUSB3324-88LTXI part is unused and in its original packaging.
Return procedure for CYUSB3324-88LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3324-88LTXI Tags
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CYPD3175-24LQXQ
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SLM9670AQ20FW1311XTMA1
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SLB9672XU20FW1613XTMA1
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