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Infineon Technologies CY7C65620-56LTXCT
- Part No.:
- CY7C65620-56LTXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
CY7C65620-56LTXCT.pdf
- Description:
- IC USB HUB CTLR 2PORT 56VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
CY7C65620-56LTXCT from Cypress Semiconductor is a 2-port, single-transaction-translator (1TT) USB 2.0 hub controller supporting bus-powered operation, integrated 24 MHz PLL clock generation, internal voltage regulation, and configurable SPI EEPROM-based device descriptors. It integrates upstream pull-up, downstream pull-down, and termination resistors, reducing BOM count. Used in compact peripheral hubs and embedded docking solutions requiring low-power, space-constrained USB expansion.
For engineers reviewing the CY7C65620-56LTXCT datasheet, CY7C65620-56LTXCT pinout, CY7C65620-56LTXCT application, or CY7C65620-56LTXCT equivalent, key selection criteria include 2-port 1TT architecture, QFN-56 package compatibility, bus-powered mode support, integrated USB transceivers, and EEPROM-configurable VID/PID/port power settings.
Technical Context
The CY7C65620 implements a USB 2.0 hub repeater for same-speed traffic (e.g., full-speed to full-speed) and a dedicated transaction translator (TT) for high-speed-to-full/low-speed split transactions. Its serial interface engine (SIE) handles bit stuffing, CRC, token identification, and address checking autonomously.
Configuration is loaded at power-up from an external SPI EEPROM, enabling runtime customization of port count, removable status, overcurrent detection mode, LED polarity, and string descriptors. The device supports both bus-powered and self-powered modes with ganged or independent port power switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 specification compliant; USB-IF certified (TID# 30000009); WHQL compliant |
| Port Count | 2 downstream ports sharing one transaction translator (1TT), plus 1 upstream port |
| Power Mode | Bus-powered only; no self-powered option - eliminates need for auxiliary supply rail |
| Crystal Input | 24 MHz external crystal; internal PLL generates required USB clocks - no external oscillator needed |
| Operating Temp | –40 °C to +85 °C industrial grade - qualified for embedded and automotive-adjacent environments |
| Package | 56-pin QFN (8 mm × 8 mm, 0.5 mm pitch) - surface-mount, thermally enhanced, space-efficient |
| EEPROM Interface | SPI serial interface for external EEPROM - enables field-programmable VID/PID, port configuration, and descriptor strings |
Pinout & Package
Package: 56-pin QFN (8 mm × 8 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Power Supply | 3.3 V supply for USB transceivers and digital I/Os - decoupling required per layout guidelines |
| VDDA | Analog Core Supply | 3.3 V analog supply for PLL and USB PHY - separate from VDDIO for noise isolation |
| D+/D− (Upstream) | USB 2.0 Upstream Differential Pair | Integrated 1.5 kΩ pull-up on D+ - enables full-speed enumeration without external resistor |
| D+/D− (Port 1 & 2) | Downstream USB Differential Pairs | Integrated 15 kΩ pull-downs on each D− - ensures proper idle state before enumeration |
| PWR#[1], PWR#[2] | Port Power Control Outputs | Open-drain outputs driving external MOSFETs - enables ganged or independent port power switching |
| OVR#[1], OVR#[2] | Overcurrent Detection Inputs | Active-low inputs monitoring port current - triggers automatic port disable on overcurrent event |
| SPI_SCK / SPI_CS / SPI_SD | SPI Configuration Interface | Loads VID/PID, port count, power settings, and descriptors at boot - no firmware update required |
| XTAL_IN / XTAL_OUT | 24 MHz Crystal Oscillator Terminals | Drives internal PLL - eliminates need for external clock generator or crystal buffer |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB Transceivers | Eliminates 8 external 24 Ω series resistors and 2 termination networks - reduces PCB area and component count |
| On-chip Voltage Regulator | Accepts single 3.3 V input for both analog and digital domains - removes need for dual-rail LDOs |
| Configurable Port Power Logic | Supports ganged or per-port power control via PWR# outputs - simplifies power tree design for bus-powered hubs |
| EEPROM-Based Descriptor Customization | Enables unique VID/PID, multi-language string descriptors, and port removability flags - avoids mask ROM re-spin |
| USB-IF Certified & WHQL Compliant | Reduces host driver qualification effort - supports Windows 10/11 plug-and-play without custom INF files |
Applications
| Standalone USB Hub | Embedded Docking Station |
|---|---|
Use Scenario: Compact desktop or travel hub connecting keyboard, mouse, and flash drive to laptop via single USB-A port. IC Role / Device Role / Timing Role: 2-port USB 2.0 hub controller managing upstream enumeration and downstream port power/reset sequencing. Use Value: Bus-powered operation eliminates external adapter; integrated resistors reduce BOM by ≥10 passive components. | Use Scenario: Industrial tablet dock with USB peripherals (barcode scanner, printer, HID) and display interface. IC Role / Device Role / Timing Role: Low-power USB expansion node enabling simultaneous full-speed device attachment with remote wakeup support. Use Value: –40 °C to +85 °C rating ensures reliability in factory-floor enclosures; EEPROM configurability allows OEM branding. |
| Monitor-Integrated Hub | Peripheral Keyboard Hub |
Use Scenario: USB-C monitor with built-in USB-A ports for headset, webcam, and storage. IC Role / Device Role / Timing Role: Secondary hub behind main USB-C controller, handling legacy USB 2.0 device attachment. Use Value: Single TT architecture minimizes latency for HID devices; QFN-56 footprint fits tight monitor bezel layouts. | Use Scenario: Mechanical keyboard with programmable USB passthrough for mouse and audio interface. IC Role / Device Role / Timing Role: Dedicated 2-port hub isolating keyboard MCU from downstream device electrical loading. Use Value: Integrated overcurrent protection prevents host port shutdown during short-circuit events on passthrough ports. |
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 |
|---|---|---|---|
| CY7C65630-56LTXCT | 4-port, identical 1TT architecture, same QFN-56 package and pinout | Supports higher port density; requires additional downstream power FETs and routing | Select when system needs >2 downstream ports without changing PCB layout |
| UPD720114GA-YB-C-A | 4-port, 2-TT architecture; supports concurrent high-speed + full-speed traffic; requires external 12 MHz crystal | Better throughput for mixed-speed device loads; higher power consumption and BOM cost | Select when simultaneous high-bandwidth full-speed and high-speed devices must be supported |
Compared with CY7C65630-56LTXCT, the CY7C65620 offers lower power and simpler power delivery for 2-port use cases; compared with UPD720114GA, it trades concurrent TT capability for reduced component count and bus-powered simplicity.
Availability
CY7C65620-56LTXCT is available at Aetrix Electronics and suitable for standalone USB hubs, embedded docking stations, monitor-integrated hubs, and peripheral keyboard hubs requiring stable component supply, industrial temperature range, and bus-powered operation.
Supply support for CY7C65620-56LTXCT 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-performance, low-power mixed-signal ICs for USB, memory, PSoC, and connectivity applications.
The EZ-USB HX2LP™ family targets cost-sensitive, space-constrained USB 2.0 hub implementations where integration of transceivers, regulators, and configuration logic reduces system-level complexity.
FAQ
Is CY7C65620-56LTXCT compatible with CY7C65640/CY7C65640A?
No. While CY7C65620 shares the same QFN-56 package footprint and basic pin functions with CY7C65640, it lacks the second transaction translator and differs in port-count configuration logic. Pin-for-pin compatibility is limited to CY7C65630 only. Electrical and register-level differences prevent direct substitution without hardware and firmware validation.
Does CY7C65620-56LTXCT support self-powered operation?
No. CY7C65620-56LTXCT is specified for bus-powered operation only. It does not support self-powered mode or VBUS detection for power-source arbitration. The device draws all operating current from the upstream VBUS line and lacks the internal circuitry to manage auxiliary power inputs or power-source switching logic.
What EEPROM part numbers are validated for CY7C65620-56LTXCT configuration?
Cypress validates Atmel AT25DF041A, ST Micro M25P10-A, and Macronix MX25L512E SPI EEPROMs for use with CY7C65620. These parts meet the required 1.65–3.6 V VCC range, 20 MHz SPI clock support, and byte/word-addressable access mode. Non-validated EEPROMs may fail during boot-time descriptor load due to timing or command-set mismatches.
Can CY7C65620-56LTXCT operate without an external crystal?
No. The device requires a 24 MHz fundamental-mode crystal connected between XTAL_IN and XTAL_OUT. Internal PLL circuitry depends on this reference for generating precise 48 MHz and 12 MHz USB clocks. An external oscillator or clock source is not supported; omission or incorrect crystal load capacitance causes enumeration failure or unstable high-speed link negotiation.
CY7C65620-56LTXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 56-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB
- Standards:
- USB 2.0
- Voltage - Supply:
- 3.15V ~ 3.45V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 56-QFN (8x8)
- Grade:
- -
- Qualification:
- -
CY7C65620-56LTXCT FAQ
1.How can I place an order for CY7C65620-56LTXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65620-56LTXCT 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 CY7C65620-56LTXCT reliable?
The price and inventory of CY7C65620-56LTXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65620-56LTXCT is usually 5 days.
3.What payment methods are accepted for CY7C65620-56LTXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65620-56LTXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65620-56LTXCT?
CY7C65620-56LTXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65620-56LTXCT 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 CY7C65620-56LTXCT?
For technical support, including CY7C65620-56LTXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65620-56LTXCT requirements.
6.How does Aetrix verify that CY7C65620-56LTXCT is sourced from the original manufacturer or authorized distributors?
All CY7C65620-56LTXCT 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 CY7C65620-56LTXCT meets industry standards.
7.What is the process for return or replacement of CY7C65620-56LTXCT?
All CY7C65620-56LTXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65620-56LTXCT, 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 CY7C65620-56LTXCT part is unused and in its original packaging.
Return procedure for CY7C65620-56LTXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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