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Infineon Technologies CY7C65632-28LTXC
- Part No.:
- CY7C65632-28LTXC
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
CY7C65632-28LTXC.pdf
- Description:
- IC USB HUB CTRLR 4PORT LP 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,540
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Product details
Overview
CY7C65632-28LTXC from Infineon is a USB 2.0 hub controller IC with single transaction translator, supporting up to two downstream ports (ports 3–4 NC), bus/self-powered operation, 12 MHz ±500 ppm crystal input, and integrated 5 V-to-3.3 V regulator - deployed in portable medical monitors requiring low-power, compact USB expansion.
For engineers reviewing the CY7C65632-28LTXC datasheet, CY7C65632-28LTXC pinout, CY7C65632-28LTXC application, or CY7C65632-28LTXC equivalent, key selection criteria include TT architecture, dual-port power management mode (gang/individual), overcurrent detection per port, and EEPROM-configurable VID/PID for embedded USB peripheral integration.
Technical Context
The CY7C65632 implements a single-TT USB 2.0 hub architecture with full-speed and low-speed backward compatibility on all downstream ports. Its MCU (2 KB ROM, 64 B RAM) executes enumeration, suspend/resume coordination, and GPIO-controlled EEPROM configuration via I²C/SPI.
It integrates upstream pull-up, downstream pull-downs, and termination resistors, eliminating six external passives. The internal regulator accepts 5 V input and delivers regulated 3.3 V output, while supporting external 3.3 V supply via dedicated pin in QFN package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 TID# 30000060 certified; supports HS upstream + FS/LS downstream |
| Downstream Ports | 2 active ports (ports 1–2); ports 3–4 internally disabled (NC) |
| Transaction Translator | Single TT shared across all downstream ports - reduces silicon area and cost vs. multi-TT |
| Power Modes | Bus-powered (5 V from upstream) or self-powered (5 V external); auto-switching supported |
| Reference Clock | 12 MHz ±500 ppm crystal (600 µW drive level) or optional 27/48 MHz oscillator input |
| Operating Temp | 0°C to +70°C - validated for commercial-grade industrial edge gateways |
| Supply Input | 5 V only; internal LDO generates 3.3 V; external 3.3 V bypass option available on QFN |
Pinout & Package
Package: 28-pin QFN (5 mm × 5 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | 5 V Power Input | Main supply for internal regulator and USB PHY; requires local 10 µF + 0.1 µF decoupling |
| VDDIO | 3.3 V Output / Input | Regulated 3.3 V output (internal LDO) or external 3.3 V bypass input - selectable by NC/VDDIO pin state |
| D+ / D− (Upstream) | USB 2.0 Differential Pair | Connects directly to host controller; integrated 1.5 kΩ upstream pull-up resistor |
| D+ / D− (Port 1, Port 2) | Downstream USB Pairs | Each pair includes integrated 15 kΩ pull-down resistors and termination |
| PWR#1 / PWR#2 | Port Power Switch Control | Active-low enables individual or ganged 5 V switching to downstream devices |
| OVR#1 / OVR#2 | Overcurrent Detection Input | Open-drain inputs monitoring external sense resistors; triggers automatic port disable |
| LED1A / LED1B / LED2A / LED2B | Port Status Indicator Drivers | Drive dual-color LEDs per port (e.g., activity + connection status) without external transistors |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Regulator + Termination | Eliminates 8 external components (LDO, 4×15 kΩ pull-downs, 2×90 Ω terminations, 1.5 kΩ pull-up) |
| EEPROM Configuration | VID/PID, port count/removability, and clock source set via external I²C EEPROM - no mask ROM re-spin needed |
| Gang/Individual Power Control | I/O pin-selectable mode allows unified or per-port 5 V switching - critical for USB-C dock power sequencing |
| ESD Recovery Logic | Internal power-failure detection resets USB state machine after ESD event - avoids host re-enumeration delay |
| Low-Power Active State | Typical 45 mA at 5 V during HS traffic - enables battery-backed USB hubs in portable diagnostics equipment |
Applications
| Portable Medical Monitor Hub | Industrial USB-C Docking Station |
|---|---|
Use Scenario: Compact bedside monitor aggregating USB-connected ECG, SpO₂, and temperature sensors via single upstream link. IC Role / Device Role / Timing Role: USB 2.0 hub controller managing two concurrent FS peripherals with guaranteed bandwidth allocation via single TT. Use Value: Integrated 5 V regulation and port power control reduce BOM by 12 components versus discrete hub + LDO + switch solution. | Use Scenario: DIN-rail mounted docking station providing USB 2.0 connectivity to PLC programming tools and HMI touchscreens. IC Role / Device Role / Timing Role: Low-power hub enabling always-on USB link with remote wakeup support and overcurrent protection per port. Use Value: Auto-switching between bus/self-powered modes maintains operation during host sleep or main power loss. |
| Embedded Point-of-Sale Terminal | Automotive Diagnostic Interface |
Use Scenario: Retail terminal integrating barcode scanner and magnetic stripe reader through isolated USB paths. IC Role / Device Role / Timing Role: Dual-port hub with individual PWR# control enabling independent peripheral power cycling without host intervention. Use Value: Per-port OVR# inputs detect short-circuit faults before damage - meets UL 62368-1 field service safety requirements. | Use Scenario: OBD-II adapter connecting vehicle CAN bus to laptop via USB, with firmware update capability. IC Role / Device Role / Timing Role: USB hub controller hosting bootloader and diagnostic firmware in internal MCU ROM (2 KB) with EEPROM-configurable PID. Use Value: Configurable VID/PID allows OEM branding and driver signing compliance without custom silicon revision. |
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 |
|---|---|---|---|
| CY7C65634-48LTXC | 4-port variant in 48-pin TQFP; identical TT architecture, same MCU, but adds ports 3–4 | Requires larger PCB area and additional external components for 4-port routing and indicators | Select when full 4-port expansion is required; not drop-in due to pinout and package mismatch |
| UPD720114GA-YC-A | Multi-TT hub (2 TTs), 4-port, 64-pin QFP; higher active current (75 mA), no integrated regulator | Supports simultaneous HS-to-FS translation on two ports - better for mixed-speed peripheral clusters | Choose when concurrent high-bandwidth FS devices (e.g., audio + HID) demand parallel TT throughput |
Compared with CY7C65634-48LTXC and UPD720114GA-YC-A, CY7C65632-28LTXC delivers lowest system-level BOM cost and smallest footprint for dual-port, ultra-low-power USB expansion - ideal where space and quiescent current are constrained.
Availability
CY7C65632-28LTXC is available at Aetrix Electronics and suitable for portable medical monitors, industrial USB-C docking stations, and embedded point-of-sale terminals requiring stable component supply across extended production lifecycles.
Supply support for CY7C65632-28LTXC 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 leader specializing in power management, sensing, and connectivity solutions for automotive, industrial, and IoT markets.
CY7C65632 belongs to the HX2VL family - designed specifically for ultra-low-power USB 2.0 hub applications where minimal BOM count, integrated regulation, and EEPROM-based configurability are critical.
FAQ
What is the maximum allowed crystal drive level for CY7C65632-28LTXC?
The datasheet specifies a maximum crystal drive level of 600 µW for the 12 MHz ±500 ppm crystal. Exceeding this may cause premature crystal aging or frequency instability. Drive level is determined by oscillator circuit gain and crystal ESR; recommended crystals include ECS-120-18-3X (ESR ≤ 80 Ω) and TXC 7M-12.000MAHE.
Does CY7C65632-28LTXC support USB Battery Charging (BC) 1.2 specification?
No, CY7C65632-28LTXC does not implement BC 1.2 detection logic. It supports standard USB 2.0 port power switching and overcurrent protection only. For BC 1.2 compliance, external charging port controllers (e.g., TUSB320) must be added in series with downstream power switches.
Can the internal MCU be reprogrammed in-system?
No - the 2 KB ROM is factory-programmed during wafer sort and cannot be modified post-shipment. Firmware behavior (e.g., enumeration sequence, port enable timing) is fixed. Configuration flexibility is provided exclusively via external EEPROM settings (VID/PID, port count, power mode).
Is the exposed thermal pad on the 28-pin QFN electrically connected?
Yes, the exposed pad is internally connected to VSS (ground) and must be soldered to a PCB thermal pad tied to the system ground plane. Thermal resistance θJA is 42°C/W with 4×4 thermal vias (0.3 mm diameter) under the pad; omitting vias increases junction temperature by >15°C at full load.
CY7C65632-28LTXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-WFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB
- 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:
- -
CY7C65632-28LTXC FAQ
1.How can I place an order for CY7C65632-28LTXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65632-28LTXC 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 CY7C65632-28LTXC reliable?
The price and inventory of CY7C65632-28LTXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65632-28LTXC is usually 5 days.
3.What payment methods are accepted for CY7C65632-28LTXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65632-28LTXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65632-28LTXC?
CY7C65632-28LTXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65632-28LTXC 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 CY7C65632-28LTXC?
For technical support, including CY7C65632-28LTXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65632-28LTXC requirements.
6.How does Aetrix verify that CY7C65632-28LTXC is sourced from the original manufacturer or authorized distributors?
All CY7C65632-28LTXC 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 CY7C65632-28LTXC meets industry standards.
7.What is the process for return or replacement of CY7C65632-28LTXC?
All CY7C65632-28LTXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65632-28LTXC, 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 CY7C65632-28LTXC part is unused and in its original packaging.
Return procedure for CY7C65632-28LTXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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