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Infineon Technologies CY7C65642-28LTXCT
- Part No.:
- CY7C65642-28LTXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
CY7C65642-28LTXCT.pdf
- Description:
- IC HUB CONTROLLER USB 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,135
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Product details
Overview
CY7C65642-28LTXCT from Infineon is a USB 2.0 hub controller with four downstream ports, integrated multiple transaction translators (one per port), 2 KB ROM/64 B RAM MCU, and support for bus- or self-powered operation. It operates at 5 V supply, integrates upstream pull-up and downstream pull-down resistors, and targets low-BOM USB hub designs in docking stations and monitor hubs.
For engineers reviewing the CY7C65642-28LTXCT datasheet, CY7C65642-28LTXCT pinout, CY7C65642-28LTXCT application, or CY7C65642-28LTXCT equivalent, key selection criteria include per-port TT architecture, 28-pin QFN (5 × 5 mm) package, 0°C to +70°C operating range, EEPROM-configurable VID/PID/port count, and internal regulator enabling single 5 V supply.
Technical Context
The CY7C65642 implements a full USB 2.0 hub repeater with independent transaction translators per downstream port, enabling concurrent high-speed-to-full-speed translation without bandwidth contention. Its MCU executes enumeration, port control, and configuration logic using 2 KB ROM firmware and 64 B RAM.
It supports dual power schemes: internal 3.3 V regulation from 5 V input (with external 12 MHz ±500 ppm crystal or 27/48 MHz oscillator), or external 3.3 V supply. Port management includes individual/ganged power switching, overcurrent detection on all four downstream ports, and two LED indicators per port.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 TID# 30000059; supports HS/FS/LS downstream devices |
| Downstream Ports | 4 ports, each with dedicated transaction translator for concurrent speed translation |
| Power Supply | Single 5 V input; internal regulator generates 3.3 V; optional external 3.3 V input |
| Operating Temp | 0°C to +70°C - validated for commercial docking and peripheral hub environments |
| Crystal Input | 12 MHz ±500 ppm (600 µW drive level); PLL enables clock synthesis for USB timing |
| Configurability | VIA EEPROM: VID/PID, port count, removable/non-removable, power mode, clock source |
| MCU Resources | 2 KB ROM firmware + 64 B RAM for enumeration, port control, and GPIO management |
Pinout & Package
Package: 28-pin QFN (5 × 5 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | 5 V input for internal regulator; powers core logic and USB PHYs |
| VDDIO | I/O power supply | Supplies 3.3 V to I²C/SPI interface and GPIOs; accepts external 3.3 V or internal regulator output |
| XTAL_IN / XTAL_OUT | Clock input/output | Connects to 12 MHz crystal; internal oscillator circuit with PLL for USB timing accuracy |
| USBDP / USBDM | Upstream differential pair | Connects directly to host controller; integrated termination and pull-up resistor |
| DPP1–DPP4 / DPM1–DPM4 | Downstream differential pairs | Four independent USB 2.0 PHY interfaces; each with integrated pull-down and overcurrent sensing |
| PWR#1–PWR#4 | Port power enable (active-low) | Controls individual downstream port power; supports ganged or independent switching via EEPROM/I/O config |
| LED1A/LED1B–LED4A/LED4B | Port status indicator drivers | Two open-drain outputs per port for bi-color LED signaling (connect/disconnect/activity) |
| SCL / SDA | I²C serial interface | Configures device via external EEPROM; supports VID/PID, port settings, and power modes |
Key Features
| Feature | Design Value |
|---|---|
| Per-port transaction translator | Enables simultaneous high-speed-to-full-speed translation across all four downstream ports without shared bottleneck |
| Integrated analog components | Eliminates 12+ external passives: pull-ups, pull-downs, terminations, and voltage regulators reduce BOM and layout area |
| EEPROM-based configurability | Allows field-programmable VID/PID, port count, removability, and power-switching mode without mask change |
| Auto power-source detection | Seamlessly switches between bus-powered (5 V from upstream) and self-powered (external 5 V) modes during operation |
| On-chip power failure recovery | Detects internal rail collapse and triggers ESD-safe reset sequence to maintain USB link integrity |
Applications
| Monitor Hub | Standalone USB Hub |
|---|---|
Use Scenario: USB-C or HDMI-embedded monitor with integrated USB 2.0 hub for keyboard/mouse/webcam connectivity. IC Role / Device Role / Timing Role: USB 2.0 hub controller managing four downstream peripherals while maintaining strict USB frame timing via integrated PLL. Use Value: Single-chip solution eliminates discrete transceivers and regulators, reducing PCB area by >35% versus discrete hub designs. | Use Scenario: Compact desktop USB hub supporting mixed-speed peripherals (HS SSD, FS printer, LS mouse). IC Role / Device Role / Timing Role: Multiple-TT hub controller routing traffic independently per port to avoid FS/LS bandwidth starvation under HS host load. Use Value: Per-port TT ensures full-speed devices sustain 12 Mbps throughput even when HS devices transfer concurrently. |
| Docking Station | Gaming Console Accessory |
Use Scenario: Laptop docking station providing USB 2.0 expansion for Ethernet, storage, and HID devices. IC Role / Device Role / Timing Role: Hub controller with individual port power control and overcurrent protection for safe hot-plug of diverse peripherals. Use Value: Configurable PWR# pins and EEPROM-defined port removability simplify compliance with USB Battery Charging spec. | Use Scenario: USB hub add-on for gaming console supporting headset, controller charger, and flash drive. IC Role / Device Role / Timing Role: Low-power hub controller with auto bus/self-power switching and thermal-safe operation up to +70°C. Use Value: 28-pin QFN footprint and internal regulation enable compact, fanless enclosure design without external LDOs. |
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 |
|---|---|---|---|
| Microchip USB2514B-AIZM | 4-port USB 2.0 hub with single shared TT; no integrated regulator; requires external 3.3 V and 1.8 V supplies | Lacks per-port TT; lower integration increases BOM count and reduces FS/LS concurrency headroom | Prefer when cost-sensitive designs accept shared-TT bandwidth trade-off and can manage multi-rail supply |
| Texas Instruments TUSB2036VFR | 3-port USB 2.0 hub with single TT; no MCU or EEPROM interface; fixed VID/PID and port configuration | No runtime configurability; limited to fixed-function, low-flexibility deployments | Select only for immutable, high-volume embedded hubs where EEPROM programming is unnecessary |
Compared with USB2514B-AIZM and TUSB2036VFR, CY7C65642-28LTXCT delivers superior per-port bandwidth isolation, reduced BOM via integrated regulation and passives, and field-upgradable configuration-critical for docking and monitor hub platforms requiring flexibility and thermal efficiency.
Availability
CY7C65642-28LTXCT is available at Aetrix Electronics and suitable for docking stations, monitor hubs, and standalone USB 2.0 hubs requiring stable component supply, commercial temperature operation, and low-power, high-integration hub functionality.
Supply support for CY7C65642-28LTXCT 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 ICs, and USB connectivity solutions with global manufacturing and quality certification.
CY7C65642 belongs to the EZ-USB™ HX2VL product line, engineered specifically for low-power, high-performance USB 2.0 hub applications in space-constrained consumer and commercial systems.
FAQ
What power supply configurations does CY7C65642-28LTXCT support?
CY7C65642-28LTXCT supports both bus-powered (5 V from upstream USB host) and self-powered (external 5 V supply) modes, with automatic detection and seamless transition. It integrates a 5 V-to-3.3 V regulator but also accepts external 3.3 V on VDDIO for systems with pre-regulated rails.
How is USB enumeration handled, and can VID/PID be customized?
Enumeration is managed by the on-chip 2 KB ROM MCU, which reads VID/PID and device descriptors from an external I²C EEPROM. Configuration options-including VID/PID, number of ports, and port removability-are fully EEPROM-programmable without mask changes or firmware recompilation.
Does CY7C65642-28LTXCT require an external crystal, and what are the clock options?
Yes-it requires either a 12 MHz ±500 ppm crystal (with 600 µW drive level) on XTAL_IN/XTAL_OUT, or an external 27 MHz or 48 MHz oscillator signal. The integrated PLL locks to the reference to generate precise USB timing signals compliant with full/high-speed requirements.
What thermal and packaging advantages does the 28-pin QFN offer for compact designs?
The 28-pin QFN (5 × 5 mm, 0.5 mm pitch) provides 40% smaller footprint than the 48-pin TQFP variant, with an exposed thermal pad for enhanced heat dissipation. It maintains full functionality-including all four downstream ports, TTs, and regulators-enabling fanless, space-constrained implementations like monitor-integrated hubs.
CY7C65642-28LTXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-WFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Controller
- Interface:
- I2C, SPI
- Standards:
- USB 2.0
- Voltage - Supply:
- 3.15V ~ 5.25V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-QFN (5x5)
- Grade:
- -
- Qualification:
- -
CY7C65642-28LTXCT FAQ
1.How can I place an order for CY7C65642-28LTXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65642-28LTXCT 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 CY7C65642-28LTXCT reliable?
The price and inventory of CY7C65642-28LTXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65642-28LTXCT is usually 5 days.
3.What payment methods are accepted for CY7C65642-28LTXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65642-28LTXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65642-28LTXCT?
CY7C65642-28LTXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65642-28LTXCT 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 CY7C65642-28LTXCT?
For technical support, including CY7C65642-28LTXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65642-28LTXCT requirements.
6.How does Aetrix verify that CY7C65642-28LTXCT is sourced from the original manufacturer or authorized distributors?
All CY7C65642-28LTXCT 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 CY7C65642-28LTXCT meets industry standards.
7.What is the process for return or replacement of CY7C65642-28LTXCT?
All CY7C65642-28LTXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65642-28LTXCT, 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 CY7C65642-28LTXCT part is unused and in its original packaging.
Return procedure for CY7C65642-28LTXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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