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Infineon Technologies CYUSB3312-88LTXIT
- Part No.:
- CYUSB3312-88LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3312-88LTXIT.pdf
- Description:
- IC USB 3.0 HUB 2-PORT 88QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,940
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Product details
Overview
CYUSB3312-88LTXIT from Infineon is a USB 3.2 Gen 1 (5 Gbps) hub controller with four downstream ports, integrated ARM® Cortex®-M0 CPU (16 KB RAM, 32 KB ROM), USB Battery Charging v1.2 compliance, shared-link capability for embedded dual-device per port, and industrial temperature range (–40°C to +85°C). It supports SS/HS/FS/LS signaling, Multi-TT USB 2.0 transaction translators, and pin-strapped configuration for VID, charging mode, and power switch control.
For engineers reviewing the CYUSB3312-88LTXIT datasheet, CYUSB3312-88LTXIT pinout, CYUSB3312-88LTXIT application, or CYUSB3312-88LTXIT equivalent, key selection criteria include USB 3.2 Gen 1 hub topology support, embedded shared-link operation, BC v1.2 ghost charging behavior, I2C-based firmware upgrade capability, and 88-pin QFN (10 × 10 × 1.0 mm) package compatibility with high-density PCB routing.
Technical Context
The CYUSB3312 integrates two independent hub controllers: a SuperSpeed (SS) hub compliant with USB 3.0 specification revision 1.0 (U0–U3 link states) and a USB 2.0 hub with four dedicated transaction translators (Multi-TT), supporting L0–L3 power states and remote wake-up. Its ARM® Cortex®-M0 subsystem handles runtime configuration, battery charging logic, and vendor-command execution.
It implements full USB 2.0 and SS PHY termination, pull-up/pull-down resistors, and configurable port control including ganged/individual power switching, overcurrent detection, and DP/DM signal swap for flexible PCB layout. Configuration is supported via pin-straps, eFuse, or I2C EEPROM-enabling factory-programmable VID/PID, string descriptors, and ACA-Dock mode activation.
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 on all ports |
| Downstream Ports | 4 USB 3.2 Gen 1 ports with individual Multi-TT USB 2.0 transaction translators |
| CPU Core | ARM® Cortex®-M0 with 16 KB RAM and 32 KB ROM for firmware execution and GPIO management |
| Battery Charging | Complies with USB BC v1.2; enables ghost charging (DCP emulation) on all DS ports without upstream host |
| Configuration Interface | Pin-strap programmable VID, PID, port count, power switch polarity, and charging enable per port |
| Operating Temperature | Industrial grade: –40°C to +85°C ambient, validated for continuous operation in embedded systems |
| Package Dimensions | 88-pin QFN, 10 mm × 10 mm × 1.0 mm body, 0.5 mm pitch, exposed thermal pad |
Pinout & Package
88-pin QFN (10 × 10 × 1.0 mm) with exposed thermal pad; RoHS-compliant, lead-free, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3P3 | 3.3 V Power Supply | Primary I/O supply for USB 2.0 PHY, digital logic, and GPIOs; requires local 3.3 V regulation |
| VDD_1P2 | 1.2 V Power Supply | Core voltage for ARM® Cortex®-M0 and SS PHY; must be filtered and decoupled per datasheet layout guidelines |
| US_DP / US_DM | Upstream Differential Pair | Connects to host controller; supports SS and USB 2.0 signaling on same pins via multiplexed PHY |
| DS1_DP / DS1_DM … DS4_DP / DS4_DM | Downstream Differential Pairs | Four independent USB 3.2 Gen 1 ports; each pair supports full SS + USB 2.0 backward compatibility |
| I2C_SDA / I2C_SCL | I2C Interface | Configurable as master or slave; used for EEPROM programming, firmware updates, and external ASSP ISP |
| GPIO[0:7] | General-Purpose I/O | Programmable for overcurrent detection, LED control, power switch enable, and custom system signaling |
| REFCLK | 26 MHz Crystal Input | Drives internal PLL; supports external oscillator or crystal; critical for USB timing accuracy and jitter compliance |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Mode | Each DS port simultaneously connects one embedded SS device and one removable USB 2.0 device-enabling up to eight total endpoints in compact embedded designs |
| Ghost Charging | DS ports emulate Dedicated Charging Ports (DCP) when upstream host is absent-enabling battery charging without host enumeration or data connection |
| USB-to-I2C Bridge | Vendor-command interface allows EZ-USB™ HX3 to act as USB-to-I2C bridge-enabling firmware update of external ASSPs or EEPROM ISP over USB |
| Pin-Strap Configuration | Hardware-selectable VID, PID, port count, power switch ganging, and BC v1.2 charging enable-eliminates need for external configuration memory in cost-sensitive designs |
| WHQL Certification | Microsoft Windows XP/Vista/7/8/8.1 certified; Linux kernel 3.11+ and macOS 10.9+ compatible-reducing OS driver integration effort |
Applications
| Standalone USB Hub | Docking Station |
|---|---|
|
Use Scenario: Compact desktop or travel hub connecting peripherals (keyboard, SSD, webcam) to laptop via single USB-C or Type-A upstream port. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub controller managing protocol translation, power distribution, and link state negotiation across four downstream ports. Use Value: Delivers full 5 Gbps bandwidth to attached SSDs while maintaining backward compatibility with legacy HS/FS devices-no performance penalty from mixed-speed traffic. |
Use Scenario: Multi-interface dock for laptops supporting simultaneous display output, Ethernet, storage, and peripheral connectivity. IC Role / Device Role / Timing Role: Embedded hub managing USB 3.2 Gen 1 upstream link and downstream device arbitration-coordinating with DisplayPort Alt Mode and USB PD controllers. Use Value: Enables shared-link operation to connect both an internal USB 3.2 SSD and external USB 2.0 keyboard/mouse on same port-reducing BOM and PCB layer count. |
| Embedded Monitor Hub | Industrial Hand-Held Cradle |
|
Use Scenario: Smart monitor with built-in USB hub for keyboard/mouse passthrough, firmware update port, and service diagnostics interface. IC Role / Device Role / Timing Role: Integrated hub with pin-strapped VID/PID and ghost charging-providing plug-and-play compatibility and maintenance port power without host dependency. Use Value: Eliminates need for separate charging IC; DS ports supply 1.5 A at 5 V during ghost mode-supporting fast charging of connected tablets or phones. |
Use Scenario: Ruggedized cradle for barcode scanners or mobile computers requiring hot-swap USB connectivity and field-upgradable firmware. IC Role / Device Role / Timing Role: Hub controller with I2C master capability-enabling in-system programming of external flash memory via USB without disassembly. Use Value: Reduces service downtime: firmware updates delivered over USB using vendor commands-no JTAG probe or physical access required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.2 Gen 1 hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYUSB3314-88LTXIT | Same architecture and package, but supports pin-strapped configuration for all four DS ports individually-enabling differentiated charging and power control per port. | Required where DS port-level BC v1.2 policy control (e.g., DCP vs CDP per port) is mandatory for multi-role peripheral support. | Select when granular per-port charging configuration is needed beyond CYUSB3312's fixed dual-port grouping. |
| CYUSB3324-88LTXIT | Includes ACA-Dock support and two additional shared-link ports (DS1/DS2 only), enabling smart phone/tablet host mode with simultaneous charging and data transfer. | Required for docking solutions where the downstream device acts as USB host (e.g., Android tablet in accessory mode) while drawing charge. | Select when ACA-Dock functionality-charging + data over same port with smartphone/tablet host-is essential. |
Compared with CYUSB3314-88LTXIT, CYUSB3312 offers simplified pin-strapping for cost-sensitive hubs with uniform port policies; compared with CYUSB3324-88LTXIT, it omits ACA-Dock but provides identical shared-link and ghost-charging capability at lower gate count and BOM cost.
Availability
CYUSB3312-88LTXIT is available at Aetrix Electronics and suitable for standalone USB hubs, embedded monitor interfaces, industrial cradles, and docking stations requiring stable component supply, industrial temperature operation, and USB-IF certification (TID# 330000060).
Supply support for CYUSB3312-88LTXIT 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, connectivity, and security solutions for automotive, industrial, and consumer markets.
CYUSB3312 belongs to the EZ-USB™ HX3 family-designed specifically for high-integration USB 3.2 Gen 1 hub applications in space-constrained embedded systems requiring low-power operation, flexible configuration, and robust charging capability.
FAQ
Does CYUSB3312-88LTXIT support USB 3.2 Gen 2 (10 Gbps)?
No. CYUSB3312-88LTXIT is strictly compliant with USB 3.2 Gen 1 (5 Gbps) and USB 3.0 specification revision 1.0. It does not support 10 Gbps signaling, Gen 2x2, or USB4 protocols. Its SS PHY is rated for 5 Gbps nominal data rate with defined jitter and eye diagram compliance per USB-IF test plans.
Can CYUSB3312 operate without an external EEPROM?
Yes. CYUSB3312 supports pin-strap configuration for core parameters including VID, PID, number of active ports, and charging enable-enabling full operation without external EEPROM. I2C EEPROM is optional for advanced features like custom string descriptors or field firmware updates.
What is the maximum current per downstream port in ghost charging mode?
In ghost charging mode, each downstream port delivers up to 1.5 A at 5 V, meeting USB BC v1.2 Dedicated Charging Port (DCP) requirements. This is achieved using internal port controller logic and external power switches controlled by GPIO signals-no host enumeration required.
Is the 88-pin QFN package thermally enhanced?
Yes. The 88-pin QFN package includes an exposed thermal pad on the bottom surface, designed for solder attachment to a PCB copper pour. Thermal performance is specified for θJA = 32°C/W under JEDEC standard board conditions (2S2P), enabling reliable operation at full load within industrial temperature limits.
CYUSB3312-88LTXIT 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 88-QFN (10x10)
CYUSB3312-88LTXIT FAQ
1.How can I place an order for CYUSB3312-88LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3312-88LTXIT 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 CYUSB3312-88LTXIT reliable?
The price and inventory of CYUSB3312-88LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3312-88LTXIT is usually 5 days.
3.What payment methods are accepted for CYUSB3312-88LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3312-88LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3312-88LTXIT?
CYUSB3312-88LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3312-88LTXIT 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 CYUSB3312-88LTXIT?
For technical support, including CYUSB3312-88LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3312-88LTXIT requirements.
6.How does Aetrix verify that CYUSB3312-88LTXIT is sourced from the original manufacturer or authorized distributors?
All CYUSB3312-88LTXIT 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 CYUSB3312-88LTXIT meets industry standards.
7.What is the process for return or replacement of CYUSB3312-88LTXIT?
All CYUSB3312-88LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3312-88LTXIT, 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 CYUSB3312-88LTXIT part is unused and in its original packaging.
Return procedure for CYUSB3312-88LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3312-88LTXIT Tags
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CYPD3175-24LQXQ
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SLB9672VU20FW1523XTMA1
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SLB9670VQ20FW785XTMA1
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AT97SC3204-U2A1A-20
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AT97SC3204-U2A1A-10
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SLM9670AQ20FW1311XTMA1
Infineon Technologies
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
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SLB9673AU20FW2613XTMA1
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