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Infineon Technologies CYUSB3312-88LTXCT
- Part No.:
- CYUSB3312-88LTXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3312-88LTXCT.pdf
- Description:
- IC USB 3.0 HUB 2-PORT 88QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,611
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Product details
Overview
CYUSB3312-88LTXCT from Infineon is a USB 3.2 Gen 1 (5 Gbps) hub controller with 2 downstream USB 3.0 ports, integrated ARM® Cortex®-M0 CPU (16 KB RAM, 32 KB ROM), BC v1.2-compliant charging, and pin-strapped configuration. It supports shared-link mode for embedded dual-device per port, ghost charging during host disconnection, and operates across –40°C to +85°C industrial temperature range.
For engineers reviewing the CYUSB3312-88LTXCT datasheet, CYUSB3312-88LTXCT pinout, CYUSB3312-88LTXCT application, or CYUSB3312-88LTXCT equivalent, key selection criteria include USB 3.0 hub topology support, embedded shared-link capability, BC v1.2 charging implementation, I2C-based firmware upgrade path, and 88-pin QFN package compatibility with thermal and routing constraints.
Technical Context
The CYUSB3312 implements two independent hub controllers: a SuperSpeed (SS) hub supporting U0–U3 link power states and full-duplex 5 Gbps operation, and a USB 2.0 hub with four transaction translators (one per DS port), L0–L3 power management, and suspend/resume signaling. Its integrated Cortex-M0 executes runtime configuration, battery charging control, and vendor-command processing.
Port control logic manages external power switches with ganged/individual enable modes, overcurrent detection, and ACA-Dock mode for simultaneous charging/data on smart host devices. Configuration is supported via pin-straps (VID, 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 SS, 480 Mbps HS, 12 Mbps FS, 1.5 Mbps LS - all ports fully backward-compatible with legacy USB devices. |
| Downstream Ports | 2 × USB 3.0-compliant DS ports - each supports shared-link mode for concurrent SS + USB 2.0 device attachment. |
| Battery Charging | USB BC v1.2 compliant - includes ghost charging (DCP emulation when US port unconnected) and ACA-Dock support. |
| CPU Core | ARM® Cortex®-M0 - 16 KB RAM + 32 KB ROM enables real-time GPIO control, descriptor customization, and firmware updates via I2C or USB. |
| Configuration Interface | Pin-strap + I2C slave/master - allows hardware-defined VID/PID, port enable/disable, power switch polarity, and in-system EEPROM programming. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating; 88-QFN package supports thermal dissipation up to 1 W active power. |
| Package | 88-pin QFN (10 mm × 10 mm × 1.0 mm) - exposes VBUS detect, LED drivers, OVR, PWR, SSRxP/M, SSTxP/M, DP/DM, I2C, and GPIO signals. |
Pinout & Package
88-pin QFN (10 mm × 10 mm × 1.0 mm) with exposed thermal pad; RoHS-compliant, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO_33 | I/O Power Supply | 3.3 V supply for USB 2.0 PHY, GPIOs, and LED drivers - requires local 10 µF + 0.1 µF decoupling. |
| VDDA_12 | Analog Core Supply | 1.2 V analog supply for SS PHY - must be filtered separately from digital rails to meet SS jitter specs. |
| US_DP / US_DM | Upstream Differential Pair | Connects to host controller; supports SS + USB 2.0 signaling - requires controlled 90 Ω differential impedance routing. |
| DS1_SSRxP/M, DS1_SSTxP/M | Downstream SS Lane | Full-duplex 5 Gbps lane for DS port 1 - each pair routed as edge-coupled microstrip with <0.1 ps skew. |
| DS1_DP / DS1_DM | Downstream USB 2.0 Pair | HS/FS/LS signaling for DS port 1 - shared physical port with SS lane in shared-link mode. |
| I2C_SDA / I2C_SCL | I2C Interface | Configurable as master or slave; used for EEPROM programming, vendor-command bridging, and runtime parameter update. |
| GPIO[7:0] | General-Purpose I/O | Programmable for overcurrent flag input, power switch control, LED status output, or custom system signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Mode | Enables one DS port to concurrently connect an embedded SuperSpeed device (e.g., SSD) and a removable USB 2.0 peripheral (e.g., keyboard), doubling effective device count without extra hub ICs. |
| Ghost Charging | Each DS port emulates a Dedicated Charging Port (DCP) when upstream host is absent - delivers 5 V/1.5 A to attached devices without host negotiation. |
| USB-to-I2C Bridge | Vendor-command interface allows host PC to program external ASSPs or sensors via USB, eliminating dedicated I2C master MCU in dock or cradle designs. |
| Pin-Strap Configuration | Eliminates need for external EEPROM or configuration IC by setting VID, PID, port enable, charging mode, and power switch behavior at boot using resistor networks on dedicated pins. |
| WHQL & USB-IF Certified | TID# 330000060 and 30000074 - ensures plug-and-play compatibility with Windows, macOS 10.9+, and Linux kernel ≥3.11 without custom driver development. |
Applications
| Embedded Docking Station | Industrial Monitor Hub |
|---|---|
Use Scenario: Compact docking station for thin clients with integrated SSD, keyboard/mouse, and smartphone charging. IC Role / Device Role / Timing Role: USB 3.2 Gen 1 hub controller managing upstream host link and two downstream ports with shared-link and ghost charging. Use Value: Single-chip solution reduces PCB area by 35% vs. discrete hub + charger IC; enables simultaneous data transfer to SSD and charging of phone without host presence. | Use Scenario: Touchscreen monitor with USB peripherals (camera, HID, flash drive) and embedded storage interface. IC Role / Device Role / Timing Role: High-reliability hub controller providing USB 3.0 connectivity and BC v1.2 charging in extended temperature environment. Use Value: Industrial temp rating (–40°C to +85°C) and robust ESD protection (±8 kV HBM) ensure stable operation in factory-floor displays with frequent cable hot-plug cycles. |
| Hand-Held Cradle | Digital Signage Controller |
Use Scenario: Portable cradle for tablets that charges while syncing media and firmware updates. IC Role / Device Role / Timing Role: Dual-role hub supporting ACA-Dock mode for tablet-as-host data+charge and standard hub mode for PC connection. Use Value: ACA-Dock compliance allows tablet to act as USB host while drawing charge - eliminates need for separate charging circuitry or manual mode switching. | Use Scenario: Digital signage media player requiring USB-connected storage, HID input, and firmware update via USB stick. IC Role / Device Role / Timing Role: Configurable hub with pin-strapped port enable and I2C-upgradable firmware for field-deployed units. Use Value: Pin-strap flexibility allows one BOM to serve multiple SKUs (e.g., 1-port vs. 2-port variants); I2C firmware update avoids costly field recalls. |
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 |
|---|---|---|---|
| CYUSB3314-88LTXCT | 4 downstream USB 3.0 ports; identical core architecture, shared-link, ghost charging, and pin-strapping - differs only in port count and associated pin allocation. | Suitable for systems requiring >2 DS ports (e.g., multi-peripheral docking stations), but increases PCB routing complexity and power demand. | Select when full 4-port USB 3.0 expansion is required and board space supports additional SS/USB 2.0 differential pairs. |
| UPD720210K8-711-BAC-A | Renesas USB 3.0 hub with 4 DS ports, no integrated Cortex-M0, no shared-link or ghost charging; requires external EEPROM for configuration. | Targeted at cost-sensitive PC peripheral hubs where embedded features and charging are not needed. | Choose only if BC v1.2 charging, shared-link, and firmware-upgradable configuration are unnecessary - otherwise CYUSB3312 offers superior integration. |
Compared with CYUSB3314-88LTXCT, CYUSB3312 provides optimal BOM reduction for 2-port embedded hubs; versus UPD720210, it delivers higher design autonomy through on-chip CPU, charging logic, and configuration flexibility - reducing external components by up to 7 parts.
Availability
CYUSB3312-88LTXCT is available at Aetrix Electronics and suitable for embedded docking stations, industrial monitors, hand-held cradles, and digital signage controllers requiring stable component supply, industrial temperature operation, and USB-IF certification.
Supply support for CYUSB3312-88LTXCT 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, and connectivity solutions, with global R&D and manufacturing infrastructure.
The EZ-USB™ HX3 product line targets high-integration USB hub applications in embedded systems, docking solutions, and consumer electronics - emphasizing reduced BOM, industrial reliability, and advanced charging features.
FAQ
Does CYUSB3312-88LTXCT support USB 3.2 Gen 2 (10 Gbps)?
No. CYUSB3312-88LTXCT complies strictly with USB 3.2 Gen 1 (5 Gbps) and USB 2.0 specifications. It does not support 10 Gbps signaling, Gen 2x2, or USB4 protocols. Its SS PHY is designed for single-lane 5 Gbps operation with U0–U3 power state management.
Can the integrated Cortex-M0 be used for custom application code?
No. The ARM® Cortex®-M0 is reserved for Infineon's proprietary firmware handling hub control, charging logic, vendor commands, and configuration - it is not user-programmable. External microcontrollers must implement custom logic via I2C or USB vendor commands.
Is the 88-pin QFN package lead-free and RoHS-compliant?
Yes. CYUSB3312-88LTXCT uses a lead-free, halogen-free, RoHS-compliant 88-pin QFN package (10 mm × 10 mm × 1.0 mm) with NiPdAu terminal finish and MSL3 moisture sensitivity rating per J-STD-020.
How is USB BC v1.2 charging implemented without external components?
Charging is implemented internally via port controller logic that detects D+–D− short (DCP), voltage divider (CDP), or specific resistance (SDP) signatures. The chip drives external power switches to deliver 5 V/1.5 A per port and emulates DCP during ghost charging - no external charger IC or sense resistors required.
CYUSB3312-88LTXCT 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 88-QFN (10x10)
CYUSB3312-88LTXCT FAQ
1.How can I place an order for CYUSB3312-88LTXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3312-88LTXCT 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 CYUSB3312-88LTXCT reliable?
The price and inventory of CYUSB3312-88LTXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3312-88LTXCT is usually 5 days.
3.What payment methods are accepted for CYUSB3312-88LTXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3312-88LTXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3312-88LTXCT?
CYUSB3312-88LTXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3312-88LTXCT 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 CYUSB3312-88LTXCT?
For technical support, including CYUSB3312-88LTXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3312-88LTXCT requirements.
6.How does Aetrix verify that CYUSB3312-88LTXCT is sourced from the original manufacturer or authorized distributors?
All CYUSB3312-88LTXCT 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 CYUSB3312-88LTXCT meets industry standards.
7.What is the process for return or replacement of CYUSB3312-88LTXCT?
All CYUSB3312-88LTXCT units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3312-88LTXCT, 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 CYUSB3312-88LTXCT part is unused and in its original packaging.
Return procedure for CYUSB3312-88LTXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3312-88LTXCT Tags
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CYPD3175-24LQXQ
Infineon Technologies
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SLB9672VU20FW1523XTMA1
Infineon Technologies
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SLB9670VQ20FW785XTMA1
Infineon Technologies
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SLB9672XU20FW1523XTMA1
Infineon Technologies
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SLB9673XU20FW2613XTMA1
Infineon Technologies
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CYPD3125-40LQXIT
Infineon Technologies
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AT97SC3204-U2A1A-20
Microchip Technology
-
AT97SC3204-U2A1A-10
Microchip Technology
-
SLM9670AQ20FW1311XTMA1
Infineon Technologies
-
SLB9672XU20FW1613XTMA1
Infineon Technologies
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SLB9672AU20FW1613XTMA1
Infineon Technologies
-
SLB9673AU20FW2613XTMA1
Infineon Technologies
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