CY7C65631-56LTXC - 2-Port USB 2.0 Hub Controller | Infineon
MPN： CY7C65631-56LTXC ✓ 啟用中CY7C65631-56LTXC 概覽
A USB hub controller is an interface IC that manages one upstream USB connection and multiple downstream ports. It belongs to the USB interface-controller hierarchy, which sits between a USB host and connected peripherals while handling enumeration, signaling, power-gating coordination, and port status. The EZ-USB HX2LP family is designed for compact USB-to-serial, storage, communications, and embedded systems.
Key verified features include integrated upstream and downstream termination resistors, integrated port-status indicator control, and in-system EEPROM programming. A 24 MHz crystal supplies the reference required for USB timing, while the integrated PLL supports low-power hub operation. The controller operates from 3.3 V and uses a compact 56-QFN surface-mount package to support space-constrained equipment.
The part supports USB full-speed and high-speed operation according to distributor descriptions. Its integrated resistors can reduce external termination-component count, while indicator-control outputs can simplify implementation of port activity or power-status LEDs. In-system EEPROM programming adds configuration flexibility for firmware and hub descriptors, subject to the manufacturer's documented programming procedure.
Typical uses include USB storage adapters, embedded USB expansion systems, printer interfaces, industrial equipment, and compact host-powered or externally powered USB hubs. System designers must follow the manufacturer datasheet for clock layout, decoupling, port-power sequencing, exposed-pad thermal construction, and supported operating-temperature grades. The supplied search data specifically describes the C suffix as a commercial-temperature offering.
When designing the hub PCB, prioritize short controlled-routing USB traces, compliant power distribution, and the package's exposed-pad requirements. Validate downstream-port switching and current budgets under worst-case bus loads because controller selection alone does not determine system power. Confirm supply topology and USB attach behavior against the exact manufacturer documentation before production release.
This page consolidates verified manufacturer and distributor information with package, application, purchasing, and design guidance. It also clearly separates confirmed facts from parameters that require direct confirmation from the complete datasheet or distributor pricing records.
直接替換替代品，適用於 CY7C65631-56LTXC — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： CY7C65631-56LTXC （相同外形與佔位） — 差異在於 Package Type, Package, EEPROM Support, Operating Temperature, Product Family.
CY7C65631-56LTXIT
✅ 直接替換📋 參考替代品（不在目錄中）
CY7C65631-56LTXI
✅ 直接替換聯絡詢價
查看資料表 →CY7C65630-56LTXC
✅ 直接替換聯絡詢價
查看資料表 →CY7C65621-56LTXC
✅ 直接替換聯絡詢價
查看資料表 →CY7C65631-56LTXCT
✅ 直接替換📋 參考替代品（不在目錄中）
CY7C65631-56LTXC 規格
| Product Type | USB 2.0 hub controller |
| Product Family | EZ-USB HX2LP Lite low-power USB 2.0 hub controller |
| Number of USB Ports | 2 ports |
| Supported USB Speed | Full Speed and High Speed |
| 供應電壓 | 3.3 V |
| Clock Reference | 24 MHz external crystal |
| Phase-Locked Loop | Integrated PLL |
| Upstream Termination | Integrated resistor |
| Downstream Termination | Integrated resistor |
| Port Status Indicator Control | Integrated control |
| EEPROM Support | In-system EEPROM programming |
| 工作溫度 | 0 C to 70 C |
| Package Type | QFN-56 |
| Package Dimensions | 8 mm x 8 mm |
| Package Height | 0.90 mm |
| Package Code | MO-220 |
| 腳位數 | 56 pins |
| 安裝類型 | Surface mount |
CY7C65631-56LTXC mo-220 腳位配置指南
CY7C65631-56LTXC（mo-220 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： CY7C65631-56LTXC.
請參閱 資料表 以查看完整腳位配置。
典型應用
CY7C65631-56LTXC 適用於 6 應用s: Compact USB Storage Hub, Industrial USB Expansion Adapter, USB-to-Serial Multiport Adapter, Embedded USB Printer Interface, USB Connectivity Test Fixture, USB Security and Access Peripheral.
Compact USB Storage Hub
The CY7C65631-56LTXC fits a two-port USB storage hub because it provides full-speed and high-speed USB 2.0 operation from a 3.3 V supply and includes integrated upstream and downstream termination resistors. The controller can sit between a host USB connection and storage interfaces while port-status outputs support user-facing activity or power indicators. The 56-QFN footprint preserves board area compared with a larger line-and-bus controller. Design the downstream power path separately, validate current limits for each storage device, and follow the manufacturer clock, decoupling, impedance, and exposed-pad requirements. Its 0 C to 70 C range is appropriate for a commercial enclosure only when ambient conditions remain inside that range.
推薦
Industrial USB Expansion Adapter
The CY7C65631-56LTXC can manage two USB 2.0 downstream connections in an industrial adapter while operating from 3.3 V. Integrated termination resistors reduce the external resistor burden around the USB bus, while port-status indicator control supports operator-visible connection state. The device's verified commercial-temperature range of 0 C to 70 C makes the enclosure thermal environment an explicit requirement rather than an assumption. For industrial use, evaluate conducted EMI, ESD, ground continuity, and connector overvoltage protection at the board boundary. A separate robust power switch and protection design is still necessary because the hub controller does not by itself establish the downstream current budget.
推薦
USB-to-Serial Multiport Adapter
The two downstream ports of the CY7C65631-56LTXC can support a multiport USB-to-serial adapter when each interface device requires full-speed or high-speed USB 2.0 connectivity. The 3.3 V controller supply is compatible with modern embedded logic, and the integrated PLL works with the verified 24 MHz crystal reference. Indicator-control outputs can report attach or power conditions to LEDs or a system controller. The important design trade-off is power and signal integrity: keep each differential pair routed continuously over a controlled-impedance reference plane, place terminations exactly as required by the final USB topology, and verify hot-plug current steps with the chosen downstream power switches and cables.
推薦
Embedded USB Printer Interface
The CY7C65631-56LTXC is suitable for embedded equipment that needs one upstream USB link and up to two managed downstream ports. Full-speed and high-speed support aligns with legacy USB 2.0 printer or peripheral interfaces, while integrated port-status control can provide useful connection feedback without requiring every status signal to be decoded by additional glue logic. Because printer loads can produce transient current demand, the power subsystem needs independent soft-start and current validation. Keep the 24 MHz oscillator physically isolated from switching nodes, provide local 3.3 V decoupling, and follow the exact 56-QFN land pattern from Infineon before release.
推薦
USB Connectivity Test Fixture
The CY7C65631-56LTXC can form the logical center of a USB connectivity test fixture that exposes two downstream ports for programming, logging, or device validation. Its integrated upstream and downstream terminations may simplify the bus network, and port-status indicator control can drive fixture LEDs. The fixture designer should place test points without breaking USB impedance-controlled routing and should avoid long copper stubs immediately downstream of the connector. Use a stable 24 MHz crystal implementation and route the return plane continuously. The 0 C to 70 C operating range must be respected in the test enclosure, and current probes should confirm that each attached device remains within the selected power architecture.
推薦
USB Security and Access Peripheral
The CY7C65631-56LTXC can serve as the USB hub element in a compact security or access peripheral that needs a host connection plus two managed peripheral ports. Its 3.3 V operation and integrated termination functions simplify a small 56-QFN design, while indicator control can expose authorization or connection state through local LEDs. The controller does not implement the security policy itself; a companion microcontroller must manage enumeration, authentication, and downstream power authorization. Maintain uninterrupted USB return paths, provide ESD protection at externally accessible connectors, and verify whether bus-powered operation has enough current margin for both attached devices under worst-case simultaneous load.
推薦
推薦產品摘要
工程參考資料，適用於 CY7C65631-56LTXC — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | CY7C65631-56LTXIT | CY7C65631-56LTXI | CY7C65630-56LTXC | CY7C65621-56LTXC | CY7C65631-56LTXCT |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | QFN-56, 8 mm x 8 mm | 56-pin QFN, same nominal package family | 56-pin QFN, same nominal package family | 56-QFN, 8 mm x 8 mm | 56-QFN family; exact dimensions not verified | 56-QFN family; exact dimensions not verified |
| USB Port Configuration | 2-port USB 2.0 hub | 4-port single-TT low-power hub controller | CY7C65631 family configuration; exact excerpt value not provided | USB 2.0 hub controller; exact port count not provided | EZ-USB HX2LP family member; exact port count not provided | EZ-USB HX2LP low-power hub controller; exact port count not provided |
主要差異化特點
- Two-port commercial-temperature configuration (對比CY7C65631-56LTXIT)
- Broader temperature option in the nearby suffix variant (對比CY7C65631-56LTXI)
- Integration reduces USB external termination parts (對比CY7C65630-56LTXC)
設計說明
Use the exact Infineon 56-QFN land pattern and exposed-pad construction from the package drawing; the supplied 56-pin footprint is not represented by a dedicated package-diagram asset in the available library. Route the USB differential pairs over a continuous reference plane with no branch stubs, maintain the intended impedance, and keep connector and protection-device paths away from the 24 MHz oscillator. The generic package image must not be used to infer manufacturing dimensions.
The controller is specified at 3.3 V, but USB hub power delivery also depends on the upstream source, power switches, fuse or current limiter, downstream connectors, and attached-device load. Confirm whether the product is powered from bus or an external supply, and validate simultaneous two-port current demand plus attach/detach transients. Do not infer downstream current capability from the controller's 3.3 V supply rating; use the complete hub power design and applicable USB limits.
Keep the 24 MHz crystal, load components, and controller clock pins in a compact cluster with a short ground return. Avoid routing switching-regulator high-current loops and USB connector transients beside this area. Although upstream and downstream termination resistors are integrated, USB pair geometry remains critical: preserve differential spacing, avoid plane splits under pairs, minimize vias, and test eye quality and enumeration across the intended cable lengths. EMI protection components should be placed at the connector boundary.
Do not substitute a family member solely because its package is also 56-QFN. The suffix can indicate temperature grade or shipping form, while a nearby MPN can use a different port topology such as the verified four-port single-TT CY7C65631-56LTXIT. Before substitution, compare every pin, USB data and power role, clock requirement, termination arrangement, exposed-pad connection, EEPROM interface, absolute maximum ratings, and operating-temperature grade against the manufacturer datasheets.
The verified commercial-temperature target is 0 C to 70 C. Estimated: envelope temperature rise equals estimated controller power dissipation multiplied by the assembled PCB thermal resistance; both inputs must be obtained from the final schematic and measured or characterized board because no power-dissipation or thermal-resistance value was supplied. Keep the exposed pad connected to a thermal copper plane according to the manufacturer drawing, but route USB power returns so thermal copper does not split high-speed signal return paths.
合規資訊
The supplied excerpts do not explicitly state compliance declarations. The C suffix is treated only as part of the exact ordering code and is not used as proof of lead-free, RoHS, REACH, or automotive qualification.
