My Inquiry
My Account
Infineon Technologies CYUSB2304-68LTXI
- Part No.:
- CYUSB2304-68LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CYUSB2304-68LTXI.pdf
- Description:
- IC USB 2.0 HUB 4-PORT 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,639
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CYUSB2304-68LTXI 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 embedded cradles requiring compact, BC-compliant USB expansion.
For engineers reviewing the CYUSB2304-68LTXI datasheet, CYUSB2304-68LTXI pinout, CYUSB2304-68LTXI application, or CYUSB2304-68LTXI equivalent, this device serves as a cost-optimized, firmware-configurable USB 2.0 hub with vendor-command support for USB-to-I2C bridging, overcurrent detection, and ganged power switch control - critical for BOM-reduced embedded host interfaces.
Technical Context
The CYUSB2304-68LTXI implements a dedicated USB 2.0 hub controller (no SS PHY), supporting LS/FS/HS speeds up to 480 Mbps across all four DS ports with individual transaction translators (Multi-TT) and full USB 2.0 link power management (L0–L3 states). It integrates a Cortex-M0 subsystem for runtime configuration, battery charging state machine execution, and I2C-based firmware updates.
Configuration is supported via pin-straps (VID, port enable, power switch polarity), I2C EEPROM, or eFuse; GPIOs are programmable for overcurrent detection, LED indicators, and power-enable signaling. The device operates from 1.2 V core and 3.3 V I/O supplies, with internal regulators and integrated termination/pull-up resistors reducing external component count.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | Full-Speed (480 Mbps), Low-Speed (1.5 Mbps), and High-Speed (480 Mbps) on all ports - enables backward-compatible peripheral connectivity without external transceivers. |
| Downstream Ports | 4 USB 2.0 ports with individual transaction translators - supports concurrent HS/FS/LS devices without bandwidth contention. |
| Battery Charging | Complies with USB BC v1.2 on each DS port - delivers up to 1.5 A per port in DCP mode, enabling standalone charging when upstream host is absent. |
| CPU Core | ARM® Cortex®-M0 with 16 KB RAM and 32 KB ROM - executes firmware for GPIO control, charging logic, and vendor-command processing without external microcontroller. |
| Package | 68-pin QFN (8 × 8 × 1.0 mm), 0.4 mm pitch - surface-mount compatible with standard reflow profiles and suitable for space-constrained PCB layouts. |
| Operating Temp | –40°C to +85°C industrial grade - validated for continuous operation in docking stations, digital TVs, and industrial embedded enclosures. |
| Power Supplies | 1.2 V core (±5%), 3.3 V I/O (±5%) - dual-regulated supply architecture minimizes noise coupling between digital and analog blocks. |
Pinout & Package
68-pin QFN package (8 mm × 8 mm × 1.0 mm, 0.4 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO_3P3 | I/O Power Supply | 3.3 V supply for USB PHY, GPIOs, and I2C interface - requires local 10 µF + 0.1 µF decoupling. |
| VDD_CORE | Core Power Supply | 1.2 V supply for Cortex-M0 and hub logic - must be filtered independently from VDDIO_3P3. |
| US_DM / US_DP | Upstream Differential Pair | Connects to host controller; supports HS/FS/LS signaling - routed with controlled 90 Ω differential impedance. |
| DS1_DM / DS1_DP … DS4_DM / DS4_DP | Downstream Differential Pairs | Four independent USB 2.0 ports; each pair includes integrated 1.5 kΩ pull-up on DP for FS/HS enumeration. |
| I2C_SDA / I2C_SCL | I2C Interface | Configurable as master or slave; used for firmware update, EEPROM read/write, and external ASSP programming. |
| PWR_EN1–PWR_EN4 | Port Power Enable Outputs | Active-high signals controlling external power switches - ganged by default but configurable for individual control. |
| OVR_CUR1–OVR_CUR4 | Overcurrent Detection Inputs | Active-low inputs monitoring external sense resistors - triggers automatic port disable and interrupt generation. |
Key Features
| Feature | Design Value |
|---|---|
| USB-IF Certified Hub (TID# 330000060) | Guarantees interoperability with Windows, macOS, and Linux hosts without custom driver development. |
| Vendor-Command USB-to-I2C Bridge | Enables host-side firmware upgrade of external ASSPs or EEPROMs via standard USB control transfers - eliminates dedicated programming headers. |
| Ganged Power Switch Control | Reduces external MOSFET count by enabling/disabling all DS ports simultaneously - simplifies power sequencing and BOM. |
| Programmable GPIOs | 12 configurable GPIOs support LED status indication, overcurrent fault reporting, and custom reset coordination - no external logic required. |
| Pin-Strap Configuration | Eliminates need for external EEPROM by allowing VID, PID, port count, and charging enable settings to be set at boot via resistor networks. |
Applications
| Monitor USB Expansion | Docking Station Hub |
|---|---|
|
Use Scenario: Adding USB peripherals (keyboard, mouse, storage) to a display with single upstream USB-C or Type-A input. IC Role / Device Role / Timing Role: USB 2.0 hub controller managing four concurrent low-bandwidth peripherals while maintaining BC v1.2 charging on each port. Use Value: Enables single-cable monitor solutions with data + charging - no additional AC adapter needed for connected peripherals. |
Use Scenario: Compact desktop dock connecting laptop to multiple USB 2.0 peripherals and charging smartphones simultaneously. IC Role / Device Role / Timing Role: Central hub IC providing isolated power switching, overcurrent protection, and vendor-command-driven I2C configuration of ancillary ICs. Use Value: Reduces bill-of-materials by integrating power control, charging logic, and firmware-upgradable I2C bridge in one 8×8 mm package. |
| Embedded Handheld Cradle | Digital TV Peripheral Hub |
|
Use Scenario: Charging and syncing barcode scanners, RFID readers, or medical sensors in industrial handheld terminals. IC Role / Device Role / Timing Role: Firmware-configurable hub with Cortex-M0 executing custom charging state machines and GPIO-triggered wake events. Use Value: Supports hot-plug detection and battery-safe charging profiles without host intervention - critical for field-deployed equipment. |
Use Scenario: Expanding USB connectivity on smart TVs for flash drives, webcams, or wireless dongles without compromising EMI performance. IC Role / Device Role / Timing Role: USB 2.0 hub with integrated termination and ESD protection - meets CISPR-22 Class B emissions limits without added filtering. Use Value: Eliminates discrete termination resistors and reduces PCB layer count - accelerates CE/FCC certification for consumer electronics. |
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 |
|---|---|---|---|
| USB2514B-AEZG | No integrated MCU; relies on external EEPROM for configuration; lacks vendor-command I2C bridge and BC v1.2 charging logic. | Requires external components for charging and firmware updates - higher BOM cost and larger footprint. | Select when fixed-function, low-cost hub operation suffices and firmware flexibility is not required. |
| UPD720114GA-YCB-AX | Includes USB 2.0 hub + PCIe-to-USB bridge; larger 128-pin LQFP package; no integrated Cortex-M0 or BC v1.2 hardware support. | Targeted at PC add-in cards rather than embedded space-constrained designs; charging requires external ICs. | Select only when PCIe host interface is mandatory and board area is not constrained. |
Compared with USB2514B-AEZG and UPD720114GA-YCB-AX, CYUSB2304-68LTXI uniquely integrates BC v1.2 charging hardware, a programmable Cortex-M0, and vendor-command I2C bridging - delivering lower system-level component count and firmware-defined functionality in a 68-pin QFN.
Availability
CYUSB2304-68LTXI is available at Aetrix Electronics and suitable for docking stations, digital TVs, embedded cradles, and monitor expansion modules requiring stable component supply, industrial temperature operation, and USB Battery Charging v1.2 compliance.
Supply support for CYUSB2304-68LTXI 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 ICs for automotive, industrial, and consumer applications.
CYUSB2304 belongs to the EZ-USB™ HX3 family - designed specifically for embedded USB hub applications requiring integrated charging, firmware configurability, and minimal external components in space-constrained systems.
FAQ
Does CYUSB2304-68LTXI support USB 3.0 SuperSpeed?
No. CYUSB2304-68LTXI is a USB 2.0-only hub controller. It supports Full-Speed (12 Mbps), High-Speed (480 Mbps), and Low-Speed (1.5 Mbps) signaling across all four downstream ports. USB 3.0 SuperSpeed (5 Gbps) capability is present only in CYUSB33xx variants, not in the CYUSB23xx series.
Can the Cortex-M0 be used to implement custom USB descriptors?
Yes. The integrated ARM® Cortex®-M0 (with 16 KB RAM and 32 KB ROM) supports runtime modification of USB string descriptors, including manufacturer, product, and serial number strings, via I2C or vendor commands - enabling dynamic branding and field-upgradable identification.
What is the maximum current each downstream port can deliver in BC v1.2 DCP mode?
Each downstream port delivers up to 1.5 A in Dedicated Charging Port (DCP) mode per USB Battery Charging v1.2 specification. This is achieved using internal charging detection circuitry and external power switches controlled by PWR_ENx signals - no host negotiation required.
Is an external crystal required for CYUSB2304-68LTXI operation?
No. CYUSB2304-68LTXI uses an internal 26 MHz oscillator and does not require an external crystal. The device supports optional external clock input (26 MHz) via CLKIN pin for synchronization in multi-hub systems, but internal oscillator operation is fully functional and qualified for industrial temperature range.
CYUSB2304-68LTXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HX3
- Package/Case:
- 68-VFQFN Exposed Pad
- Packaging:
- Tray
- 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)
CYUSB2304-68LTXI FAQ
1.How can I place an order for CYUSB2304-68LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB2304-68LTXI 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 CYUSB2304-68LTXI reliable?
The price and inventory of CYUSB2304-68LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB2304-68LTXI is usually 5 days.
3.What payment methods are accepted for CYUSB2304-68LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB2304-68LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB2304-68LTXI?
CYUSB2304-68LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB2304-68LTXI 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 CYUSB2304-68LTXI?
For technical support, including CYUSB2304-68LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB2304-68LTXI requirements.
6.How does Aetrix verify that CYUSB2304-68LTXI is sourced from the original manufacturer or authorized distributors?
All CYUSB2304-68LTXI 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 CYUSB2304-68LTXI meets industry standards.
7.What is the process for return or replacement of CYUSB2304-68LTXI?
All CYUSB2304-68LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB2304-68LTXI, 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 CYUSB2304-68LTXI part is unused and in its original packaging.
Return procedure for CYUSB2304-68LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB2304-68LTXI Tags
-
CYPD3175-24LQXQ
Infineon Technologies
-
SLB9672VU20FW1523XTMA1
Infineon Technologies
-
SLB9670VQ20FW785XTMA1
Infineon Technologies
-
SLB9672XU20FW1523XTMA1
Infineon Technologies
-
SLB9673XU20FW2613XTMA1
Infineon Technologies
-
CYPD3125-40LQXIT
Infineon Technologies
-
AT97SC3204-U2A1A-20
Microchip Technology
-
AT97SC3204-U2A1A-10
Microchip Technology
-
SLM9670AQ20FW1311XTMA1
Infineon Technologies
-
SLB9672XU20FW1613XTMA1
Infineon Technologies
-
SLB9672AU20FW1613XTMA1
Infineon Technologies
-
SLB9673AU20FW2613XTMA1
Infineon Technologies
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
