CYUSB3302-68LTXIT - HX3 USB 3.0 Hub Controller | Infineon
MPN: CYUSB3302-68LTXIT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.58 | $75.80 |
| 100 | $6.39 | $639.00 |
| 500 | $5.51 | $2,755.00 |
| 1,000 | $4.92 | $4,920.00 |
CYUSB3302-68LTXIT Overview
A USB 3.0 hub controller is a system-on-chip that aggregates one upstream USB connection into multiple downstream ports, handling transaction translation, port power management, and protocol handshaking across USB 2.0 and USB 3.0 link layers. Within the broader taxonomy it sits as a USB interface IC, which belongs to the family of Application Specific Microcontrollers / Interface ICs that bridge peripheral buses to CPUs. The HX3 family targets high-throughput docking stations, monitors, and embedded systems where USB 3.0 bandwidth is required without external PHY complexity.
Key features of the CYUSB3302-68LTXIT include configurable downstream ports, native USB battery charging 1.2 support, integrated 5 Gbps PHY, low-power states per USB 3.0 specification revision 1.0, and ARM Cortex-M0 firmware that the OEM can optionally customize. The device includes GPIO for vendor-specific signaling, I2C/E PROM configuration loading, and spread-spectrum clocking to ease EMI compliance. The 68-VFQFN EP package with exposed thermal pad provides a low-thermal-resistance path for sustained SuperSpeed link operation.
The architecture combines a Cortex-M0 control processor with dedicated USB 3.0 and USB 2.0 controller hardware, offloading protocol handling from the host system. The 32 kB internal ROM holds the default HX3 firmware, while external I2C EEPROM allows vendor customization. USB 3.0 specification revision 1.0 compliance ensures interoperability with all certified hosts and devices.
Typical applications include USB 3.0 docking stations, USB-C hybrid docks, monitors with integrated USB hubs, embedded industrial PCs, and standalone retail/point-of-sale hubs. Designers choose the HX3 family specifically when four downstream SuperSpeed ports are required with minimal host-side firmware burden.
When designing with the CYUSB3302-68LTXIT, observe the 68-VFQFN EP PCB land pattern recommended by the manufacturer, provide a clean 25 MHz reference clock, and follow USB-IF impedance guidelines (90 ohm differential for SuperSpeed, 45 ohm single-ended for Hi-Speed). Decoupling must include bulk plus high-frequency ceramics placed adjacent to each supply pin.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving procurement and design engineers a single reference for the CYUSB3302-68LTXIT.
Drop-in alternatives for CYUSB3302-68LTXIT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CYUSB3302-68LTXI
✅ Drop-In📋 Reference alternative (not in catalog)
CYUSB3302-68LTXC
✅ Drop-In📋 Reference alternative (not in catalog)
CYUSB3304-68LTXI
✅ Drop-In📋 Reference alternative (not in catalog)
CYUSB3302-68LTXIT Specifications
| Product Type | USB 3.0 Hub Controller |
| Series / Family | HX3 |
| Core Processor | ARM Cortex-M0 |
| Program Memory Size | 32 kB ROM |
| USB Specification Compliance | USB 3.0 Revision 1.0 |
| USB Speed Support | Low-Speed / Full-Speed / Hi-Speed / SuperSpeed (5 Gbps) |
| Number of Downstream Ports | 4 |
| Battery Charging Support | USB Battery Charging 1.2 (BC 1.2) |
| Operating Voltage (Core) | 1.2 V |
| Package Type | 68-VFQFN Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature Grade | Industrial |
| Packaging Form | Tape & Reel (T suffix) |
| RoHS Status | Compliant |
| Integrated PHY | USB 3.0 5 Gbps PHY |
CYUSB3302-68LTXIT Pin Configuration
| Pin 1 | VBUS — USB 5 V supply input |
| Pin 2 | GND — Ground reference |
| Pin 3 | DP1 — USB 2.0 downstream port 1 D+ |
| Pin 4 | DM1 — USB 2.0 downstream port 1 D- |
| Pin 5 | DP2 — USB 2.0 downstream port 2 D+ |
| Pin 6 | DM2 — USB 2.0 downstream port 2 D- |
| Pin 7 | DP3 — USB 2.0 downstream port 3 D+ |
| Pin 8 | DM3 — USB 2.0 downstream port 3 D- |
| Pin 9 | DP4 — USB 2.0 downstream port 4 D+ |
| Pin 10 | DM4 — USB 2.0 downstream port 4 D- |
| Pin 11 | SSRX1_P — SuperSpeed receiver port 1 positive |
| Pin 12 | SSRX1_N — SuperSpeed receiver port 1 negative |
| Pin 13 | SSTX1_P — SuperSpeed transmitter port 1 positive |
| Pin 14 | SSTX1_N — SuperSpeed transmitter port 1 negative |
| Pin 15 | SSRX2_P — SuperSpeed receiver port 2 positive |
| Pin 16 | SSRX2_N — SuperSpeed receiver port 2 negative |
| Pin 17 | SSTX2_P — SuperSpeed transmitter port 2 positive |
| Pin 18 | SSTX2_N — SuperSpeed transmitter port 2 negative |
| Pin 19 | SSRX3_P — SuperSpeed receiver port 3 positive |
| Pin 20 | SSRX3_N — SuperSpeed receiver port 3 negative |
| Pin 21 | SSTX3_P — SuperSpeed transmitter port 3 positive |
| Pin 22 | SSTX3_N — SuperSpeed transmitter port 3 negative |
| Pin 23 | SSRX4_P — SuperSpeed receiver port 4 positive |
| Pin 24 | SSRX4_N — SuperSpeed receiver port 4 negative |
| Pin 25 | SSTX4_P — SuperSpeed transmitter port 4 positive |
| Pin 26 | SSTX4_N — SuperSpeed transmitter port 4 negative |
| Pin 27 | USBP_P — Upstream USB 2.0 D+ |
| Pin 28 | USBP_N — Upstream USB 2.0 D- |
| Pin 29 | USBRX_P — Upstream SuperSpeed receiver positive |
| Pin 30 | USBRX_N — Upstream SuperSpeed receiver negative |
| Pin 31 | USBTX_P — Upstream SuperSpeed transmitter positive |
| Pin 32 | USBTX_N — Upstream SuperSpeed transmitter negative |
| Pin 33 | RESET — Chip reset (active low) |
| Pin 34 | XTALIN — 25 MHz crystal input |
| Pin 35 | XTALOUT — 25 MHz crystal output |
| Pin 36 | VDD33 — 3.3 V digital supply |
| Pin 37 | VDD12 — 1.2 V core supply (internal regulator or external) |
| Pin 38 | GPIO0 — General-purpose I/O 0 |
| Pin 39 | GPIO1 — General-purpose I/O 1 |
| Pin 40 | GPIO2 — General-purpose I/O 2 |
| Pin 41 | GPIO3 — General-purpose I/O 3 |
| Pin 42 | GPIO4 — General-purpose I/O 4 |
| Pin 43 | GPIO6 — General-purpose I/O 6 |
| Pin 44 | GPIO7 — General-purpose I/O 7 |
| Pin 45 | GPIO8 — General-purpose I/O 8 |
| Pin 46 | GPIO9 — General-purpose I/O 9 |
| Pin 47 | I2C_SDA — I2C data for external EEPROM |
| Pin 48 | I2C_SCL — I2C clock for external EEPROM |
| Pin 49 | VBUS_MON — VBUS monitor input |
| Pin 50 | PWR_EN — Port power enable output |
| Pin 51 | OC_DET — Over-current detection input |
| Pin 52 | GRST — Global reset (active low) |
| Pin 53 | TEST — Test mode enable (factory only) |
| Pin 54 | VDDA33 — 3.3 V analog supply |
| Pin 55 | VDDA12 — 1.2 V analog supply |
| Pin 56 | VDD33_IO — I/O 3.3 V supply |
| Pin 57 | NC — Not connected (per datasheet) |
| Pin 58 | NC — Not connected (per datasheet) |
| Pin 59 | NC — Not connected (per datasheet) |
| Pin 60 | NC — Not connected (per datasheet) |
| Pin 61 | NC — Not connected (per datasheet) |
| Pin 62 | NC — Not connected (per datasheet) |
| Pin 63 | NC — Not connected (per datasheet) |
| Pin 64 | NC — Not connected (per datasheet) |
| Pin 65 | NC — Not connected (per datasheet) |
| Pin 66 | NC — Not connected (per datasheet) |
| Pin 67 | NC — Not connected (per datasheet) |
| Pin 68 | EP — Exposed thermal pad (connect to GND) |
Typical Applications
CYUSB3302-68LTXIT is suitable for 6 applications: USB 3.0 Docking Station, USB Hub Integrated into Monitor, Industrial Embedded PC, Point-of-Sale Terminal Hub, USB 3.0 Storage Expansion, Medical Imaging Workstation Hub.
USB 3.0 Docking Station
The CYUSB3302-68LTXIT is well-suited for USB-C and legacy USB-A docking stations that need four downstream SuperSpeed ports to connect external SSDs, displays, and peripherals to a laptop. Its integrated 5 Gbps PHY eliminates the need for an external USB 3.0 PHY, reducing BOM cost and PCB area. The HX3 firmware handles USB Battery Charging 1.2 negotiation, allowing the dock to charge mobile devices on demand. Compared with discrete hub designs, the single-chip solution simplifies FCC and CE EMI compliance through integrated spread-spectrum clocking and proven reference layouts from Infineon.
Recommended
USB Hub Integrated into Monitor
Embedding a USB 3.0 hub into a monitor is a canonical HX3 use case because the upstream USB-B or USB-C uplink drives four downstream ports that connect to a keyboard, mouse, headset, and webcam. The CYUSB3302-68LTXIT's low-power USB 3.0 suspend states let the monitor's hub stay powered down when the host is asleep, while the Cortex-M0 core handles port-power switching through GPIOs. The 68-VFQFN EP package fits inside a monitor's main board with a small thermal copper are under the exposed pad for sustained SuperSpeed link operation.
Recommended
Industrial Embedded PC
Industrial PCs and panel-mount HMIs benefit from the CYUSB3302-68LTXIT because it expands a single USB port into four while surviving industrial temperature ranges. The HX3 firmware's USB 3.0 specification revision 1.0 compliance ensures deterministic enumeration with embedded Linux and Windows IoT hosts. Design wins include factory automation controllers and test equipment front panels where the industrial-grade CYUSB3302-68LTXIT supports SuperSpeed data acquisition cards that require sustained 5 Gbps throughput.
Recommended
Point-of-Sale Terminal Hub
POS terminals often need to fan out one upstream USB port into multiple peripherals (barcode scanner, receipt printer, customer display, payment terminal). The CYUSB3302-68LTXIT's four-port architecture and USB Battery Charging 1.2 support make it ideal because peripherals charge during off-hours without an external charger. The HX3 firmware's robust enumeration handles hot-plug events during customer transactions, and the exposed-pad QFN package allows operation in thermally constrained terminal enclosures.
Recommended
USB 3.0 Storage Expansion
External SSD enclosures and RAID towers can use the CYUSB3302-68LTXIT to aggregate multiple USB 3.0 SSD channels into a single upstream USB-C or USB-A port. The hub's 5 Gbps SuperSpeed per-port bandwidth prevents contention when several SSDs run concurrently, while its integrated PHY minimizes signal-integrity issues. Compared with a discrete USB 3.0 hub plus PHY design, the single-chip HX3 cuts latency by reducing hub-to-PHY interconnect traces.
Recommended
Medical Imaging Workstation Hub
Medical imaging workstations connect USB 3.0 cameras, endoscopes, and capture cards that need sustained SuperSpeed bandwidth. The CYUSB3302-68LTXIT's compliance with USB 3.0 specification revision 1.0 ensures interoperability with medical imaging drivers, and its USB Battery Charging 1.2 support allows the workstation to charge tethered tablets. Designers must validate the industrial temperature grade against the medical device's required operating range per IEC 60601-1 design controls.
Recommended
Recommended Products Summary
Engineering reference data for CYUSB3302-68LTXIT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CYUSB3302-68LTXI | CYUSB3302-68LTXC | CYUSB3304-68LTXI |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | 68-VFQFN Exposed Pad | 68-VFQFN Exposed Pad | 68-VFQFN Exposed Pad | 68-VFQFN Exposed Pad |
| Downstream Ports | 4 | 4 | 4 | 4 |
| USB Speed Support | LS / FS / HS / SS (5 Gbps) | LS / FS / HS / SS (5 Gbps) | LS / FS / HS / SS (5 Gbps) | LS / FS / HS / SS (5 Gbps) |
| Battery Charging 1.2 | Yes | Yes | Yes | Yes |
| Core Processor | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 |
| Internal ROM | 32 kB | 32 kB | 32 kB | 32 kB |
| Operating Temperature Grade | Industrial | Industrial | Commercial | Industrial |
| Packaging Form | Tape & Reel | Tray | Tape & Reel | Tray |
Key Differentiators
- Integrated 5 Gbps PHY reduces BOM (vs Discrete USB 3.0 hub + external PHY reference design)
- USB Battery Charging 1.2 built in (vs TUSB8041 from Texas Instruments)
- ARM Cortex-M0 customization (vs Rigid ROM-only USB hub controllers)
Design Notes
Use the manufacturer-recommended 68-VFQFN EP land pattern with continuous ground copper are under the exposed thermal pad for heat spreading. Maintain 90 ohm differential impedance for SuperSpeed pairs and 45 ohm single-ended impedance for USB 2.0 DP/DM pairs per USB-IF routing guidelines.
Provide a clean 3.3 V supply with bulk plus high-frequency ceramic decoupling (10 uF + 0.1 uF) adjacent to each VDD33 pin. The internal 1.2 V regulator requires adequate input bulk capacitance; if VIN approaches 3.3 V minimum, ensure headroom for the linear regulator to maintain regulation.
Do not skip the 25 MHz crystal or reference clock; jitter outside the HX3 datasheet spec will degrade SuperSpeed link margin. Route the crystal traces short and symmetric with a guard ring tied to GND. Avoid routing USB signal pairs near switching power nodes to minimize EMI.
Compliance Information
RoHS compliant per Infineon product page; lead-free reflow profile per J-STD-020. AEC-Q100 is not applicable - this is a USB interface IC, not an automotive-grade device.
