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Infineon Technologies CYUSB2304-68LTXIT
- Part No.:
- CYUSB2304-68LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CYUSB2304-68LTXIT.pdf
- Description:
- IC USB 2.0 HUB 4-PORT 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
CYUSB2304-68LTXIT from Infineon is a USB 2.0-only 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, industrial temperature range (–40°C to +85°C), and 68-pin QFN (8 × 8 × 1.0 mm) packaging - deployed in docking stations, monitors, and digital TVs requiring embedded USB expansion with charging support.
For engineers reviewing the CYUSB2304-68LTXIT datasheet, CYUSB2304-68LTXIT pinout, CYUSB2304-68LTXIT application, or CYUSB2304-68LTXIT equivalent, this device delivers configurable power switching, I2C-based firmware update capability, vendor-command-enabled USB-to-I2C bridging, and pin-strapped VID/PID/charging configuration - critical for BOM-optimized, charge-aware embedded hub designs.
Technical Context
The CYUSB2304-68LTXIT implements a dedicated USB 2.0 hub controller with four transaction translators (one per DS port), full LS/FS/HS support (1.5/12/480 Mbps), and integrated port control logic for overcurrent detection, LED status signaling, and ganged/individual power switch enable. It lacks SuperSpeed (5 Gbps) PHY and SS hub functionality - distinguishing it from CYUSB33xx variants.
Its embedded Cortex®-M0 subsystem manages BC v1.2 charging emulation (including ghost charging), ACA-Dock mode coordination, GPIO configuration for power/LED/overcurrent, and runtime firmware updates via I2C EEPROM or external I2C master - enabling field-upgradable, system-integrated hub behavior without host dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Downstream Ports | 4 × USB 2.0 ports (LS/FS/HS); no SuperSpeed support - limits to 480 Mbps max per port. |
| Charging Compliance | USB BC v1.2 on all DS ports; enables DCP/CDP/SDP detection and ghost charging when upstream host is disconnected. |
| CPU Core | ARM® Cortex®-M0 with 16 KB RAM + 32 KB ROM - executes charging control, GPIO management, and vendor-command handlers. |
| Configuration Interface | I2C slave/master/multi-master; supports EEPROM-based boot config and in-system programming of external I2C EEPROM via USB. |
| Package | 68-pin QFN, 8 × 8 × 1.0 mm, exposed thermal pad - requires standard QFN reflow profile and thermal vias for industrial temp operation. |
| Operating Temperature | –40°C to +85°C - validated for industrial environments; excludes commercial-only variants like CYUSB2302-68LTXC. |
| Power Switch Control | Ganged or individual control per DS port; polarity-selectable via pin-straps - simplifies discrete FET driver design. |
Pinout & Package
68-pin QFN (8 × 8 × 1.0 mm), RoHS-compliant, thermally enhanced with exposed paddle. Pinout validated per Infineon datasheet 001-73643 Rev. *V, Sections 5 and 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO_33 | I/O Power Supply | 3.3 V supply for USB transceivers and GPIOs; requires local 10 µF + 0.1 µF decoupling. |
| VDDA_12 | Analog Core Supply | 1.2 V analog supply for USB PHY; must be filtered separately from digital rails. |
| US_DM / US_DP | Upstream Differential Pair | Connects to host controller; requires 90 Ω differential impedance and ESD protection. |
| DS1_DM / DS1_DP … DS4_DM / DS4_DP | Downstream Differential Pairs | Four independent USB 2.0 ports; each supports BC v1.2 charging negotiation and overcurrent sensing. |
| PWR_EN1 … PWR_EN4 | Power Switch Enable Outputs | Active-high signals controlling external high-side switches; configurable as ganged or per-port. |
| OVR_CURR1 … OVR_CURR4 | Overcurrent Detection Inputs | Active-low inputs monitoring external sense resistors; triggers automatic port disable on fault. |
| I2C_SDA / I2C_SCL | I2C Interface | Supports configuration loading from EEPROM or firmware update by external master; 3.3 V tolerant. |
| GPIO0–GPIO7 | Configurable General-Purpose I/O | Programmable for LED drive, reset control, or custom system signaling via Cortex®-M0 firmware. |
Key Features
| Feature | Design Value |
|---|---|
| USB BC v1.2 Charging | Full DCP/CDP/SDP detection + ghost charging on all 4 DS ports - enables battery-powered peripheral charging without host connection. |
| Pin-Strap Configuration | Hardware-selectable VID, PID, number of active ports, and power switch ganging - eliminates need for external configuration EEPROM in cost-sensitive designs. |
| Vendor Command Support | USB-class-defined vendor requests implement USB-to-I2C bridge - allows host-side firmware update of external ASSPs or EEPROMs without additional interfaces. |
| Industrial Temp Operation | Validated –40°C to +85°C performance with full USB 2.0 timing and charging compliance - suitable for uncontrolled ambient deployments. |
| Integrated Cortex®-M0 | On-chip 16 KB RAM + 32 KB ROM runs real-time charging state machines and GPIO control logic - removes need for external microcontroller in hub subsystems. |
Applications
| Monitor Hub Integration | Docking Station Expansion |
|---|---|
|
Use Scenario: Adding four USB 2.0 peripherals (keyboard, mouse, storage, headset) to a display with single upstream USB-C or Type-A input. IC Role / Device Role / Timing Role: USB 2.0 hub controller managing enumeration, packet routing, and BC v1.2 charging negotiation for connected peripherals. Use Value: Enables single-cable monitor connectivity with simultaneous data + charging; eliminates need for separate charging adapters or host-dependent power management. |
Use Scenario: Embedded hub in compact laptop dock supporting legacy USB-A peripherals while maintaining low standby power. IC Role / Device Role / Timing Role: Centralized port controller handling power sequencing, overcurrent protection, and LED status indication across four DS ports. Use Value: Reduces bill-of-materials via integrated power switch control and eliminates external MCU for charging logic - critical for space-constrained dock PCBs. |
| Industrial Display Terminal | Digital Signage Controller |
|
Use Scenario: Ruggedized kiosk display requiring reliable USB peripheral attachment (scanner, printer, badge reader) in factory-floor environments. IC Role / Device Role / Timing Role: Industrial-grade hub managing hot-plug detection, suspend/resume signaling, and robust overcurrent response at –40°C to +85°C. Use Value: Ensures continuous peripheral availability under thermal stress; built-in BC v1.2 avoids external charging ICs for barcode scanners with Li-ion batteries. |
Use Scenario: Media player board inside retail signage delivering content via USB flash drives and powering auxiliary sensors (ambient light, motion). IC Role / Device Role / Timing Role: Configurable hub with pin-strapped port enable/disable and GPIO-driven status LEDs - simplifies factory programming and field service diagnostics. Use Value: Enables zero-touch deployment: VID/PID and active port count set at assembly; reduces firmware versioning complexity across global SKUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 2.0 hub controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYUSB2302-68LTXIT | 2-port USB 2.0 hub; same package, CPU, and BC v1.2 support but half the downstream capacity. | Suitable for space-constrained or low-peripheral-count systems (e.g., thin-client terminals). | Select when only two DS ports are required and PCB area or cost optimization is prioritized over expansion headroom. |
| UPD720114GA-YC-A | 4-port USB 2.0 hub with integrated 5 V LDO, no embedded CPU, no BC v1.2, no I2C firmware update capability. | Used in basic hubs where charging and programmability are not required; lower BoM cost but less system integration. | Select for cost-sensitive, non-charging applications where external power regulation and fixed configuration are acceptable. |
Compared with CYUSB2302-68LTXIT, CYUSB2304-68LTXIT doubles port count without increasing package size; versus UPD720114GA-YC-A, it adds BC v1.2, Cortex®-M0 programmability, and I2C configurability - justifying its use in intelligent, charge-aware embedded systems.
Availability
CYUSB2304-68LTXIT is available at Aetrix Electronics and suitable for docking stations, industrial displays, digital signage controllers, and monitor-integrated hubs requiring stable component supply, industrial temperature operation, and USB BC v1.2 charging capability.
Supply support for CYUSB2304-68LTXIT 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, security ICs, and USB connectivity solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CYUSB2304-68LTXIT belongs to the EZ-USB™ HX3 family - designed specifically for embedded USB hub applications demanding integrated charging, firmware upgradability, and minimal external components in industrial and consumer electronics.
FAQ
Does CYUSB2304-68LTXIT support SuperSpeed (5 Gbps) USB 3.x operation?
No. CYUSB2304-68LTXIT is a USB 2.0-only hub controller. It supports LS/FS/HS speeds (1.5/12/480 Mbps) across all four downstream ports but lacks SuperSpeed PHY, SS hub logic, or USB 3.2 Gen 1 capability. For 5 Gbps support, consider CYUSB3304 or CYUSB3314 variants.
Can the embedded Cortex®-M0 be used to run custom application code?
Yes. The ARM® Cortex®-M0 core (16 KB RAM, 32 KB ROM) executes Infineon's hub firmware but exposes GPIO control, I2C master/slave functions, and vendor command handlers - enabling customer-defined extensions such as custom LED patterns, sensor polling, or secure boot validation via external SPI flash.
What is the role of "ghost charging" in CYUSB2304-68LTXIT?
Ghost charging allows each downstream port to emulate a Dedicated Charging Port (DCP) when no upstream host is connected. This enables connected devices (e.g., smartphones, Bluetooth headsets) to draw up to 1.5 A at 5 V without host enumeration - critical for kiosks or displays that must charge peripherals autonomously.
Is pin-strapping mandatory for basic operation?
No. Pin-strapping is optional and used only to configure VID/PID, active port count, power switch ganging, and charging enable per port. Default factory settings allow functional operation without strapping; however, customization requires correct pull-up/pull-down resistor values per datasheet Table 6-1 and Section 6.9.2.
CYUSB2304-68LTXIT 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 2.0 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:
- 68-QFN (8x8)
CYUSB2304-68LTXIT FAQ
1.How can I place an order for CYUSB2304-68LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB2304-68LTXIT 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 CYUSB2304-68LTXIT reliable?
The price and inventory of CYUSB2304-68LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB2304-68LTXIT is usually 5 days.
3.What payment methods are accepted for CYUSB2304-68LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB2304-68LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB2304-68LTXIT?
CYUSB2304-68LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB2304-68LTXIT 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 CYUSB2304-68LTXIT?
For technical support, including CYUSB2304-68LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB2304-68LTXIT requirements.
6.How does Aetrix verify that CYUSB2304-68LTXIT is sourced from the original manufacturer or authorized distributors?
All CYUSB2304-68LTXIT 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 CYUSB2304-68LTXIT meets industry standards.
7.What is the process for return or replacement of CYUSB2304-68LTXIT?
All CYUSB2304-68LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB2304-68LTXIT, 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 CYUSB2304-68LTXIT part is unused and in its original packaging.
Return procedure for CYUSB2304-68LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB2304-68LTXIT Tags
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CYPD3175-24LQXQ
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SLB9670VQ20FW785XTMA1
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SLM9670AQ20FW1311XTMA1
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SLB9672XU20FW1613XTMA1
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