CY7C65621-56LTXI USB 2.0 Hub Controller | Infineon
料号： CY7C65621-56LTXI ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.0189 | $4.02 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
CY7C65621-56LTXI 概述
A USB hub controller is an interface integrated circuit that coordinates traffic between a USB host and multiple downstream peripherals. Within the hierarchy of USB interface controllers, hub controllers, interface ICs, and semiconductors, it provides device enumeration, downstream-port management, and shared host connectivity. The target part is therefore useful when one USB host connection must fan out to two USB devices without relying on a host-side software hub.
The verified data highlights Full Speed and High Speed USB 2.0 operation, two downstream ports, a 3.3 V supply, and a single-TT bus-powered configuration. The Serial Interface Engine allows the controller to communicate with the USB host, while the QFN exposed-pad package supports compact surface-mount construction and board-level heat spreading. The I-grade ordering code is explicitly identified by the manufacturer for the two-port bus-powered application.
The CY7C65621 family is intended for USB hubs and related interface equipment where deterministic downstream-port control is required. Compared with a four-port hub controller, the two-port architecture can fit installations that need exactly two ports and may simplify enclosure, cable, and power-budget considerations. Firmware, descriptor configuration, downstream transceiver characteristics, and detailed electrical limits should be checked in the manufacturer datasheet before board release.
Typical installations include compact USB hubs, bus-powered accessories, embedded USB expansion equipment, and two-port docking products. The device can sit between a host controller and two downstream connectors, provided the board implements the required USB routing, decoupling, protection, and exposed-pad thermal construction. USB signal integrity is especially important because high-speed edges and connector launches can introduce reflections and loss.
For a new design, use the manufacturer ordering information and datasheet to confirm pin assignments, supported operating modes, crystal or clock requirements, power sequencing, and transceiver layout. Treat the published 3.3 V value as the verified supply figure, but verify every electrical limit and application guideline in the official documentation. This page combines verified distributor facts, official product identification, application guidance, and replacement constraints rather than adding unsupported specifications.
直接替换替代料： CY7C65621-56LTXI ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： CY7C65621-56LTXI （相同外形与封装尺寸） ——差异在于 Package, Product Type, Temperature Grade, USB Specification.
快速对比工具——选择替代料号进行并排对比：
CY7C65631-56LTXI
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →CY7C65630-56LTXAT
✅ 直接替换📋 参考替代料（不在目录中）
USB2513B-AEZC
✅ 直接替换✓ 有现货
$2.78 / 个
查看数据手册 →USB5532B-5000JZX
✅ 直接替换📋 参考替代料（不在目录中）
KSZ9477STXI
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →CY7C65621-56LTXI 规格参数
| Product Type | USB hub controller |
| USB Specification | USB 2.0 |
| USB Speed Support | Full Speed and High Speed |
| Number of Ports | 2 ports |
| 电源电压 | 3.3 V |
| Serial Interface Engine | Integrated |
| 拓扑 | Single-TT |
| Application Configuration | Bus powered |
| Temperature Grade | I-grade |
| 封装 | 56-QFN (8 mm x 8 mm) |
| Package Type | QFN |
| Exposed Pad | Yes |
| 安装类型 | Surface Mount |
| Manufacturer | Infineon Technologies |
| Host Communication | USB Serial Interface Engine |
CY7C65621-56LTXI qfn 引脚配置指南
CY7C65621-56LTXI（qfn 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： CY7C65621-56LTXI.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY7C65621-56LTXI 适用于 6 应用s: Compact Two-Port USB Hub, Bus-Powered USB Expansion Accessory, USB Docking Product, Embedded USB Expansion Board, Industrial USB Interface Module, USB Test and Measurement Front Panel.
Compact Two-Port USB Hub
CY7C65621-56LTXI fits a compact two-port USB hub because the verified manufacturer page identifies a two-port single-TT bus-powered application. Place the controller between the upstream USB host connection and two downstream ports, then implement the required USB trace geometry, connector protection, and exposed-pad thermal connections. The two-port topology avoids adding unnecessary downstream hardware when the enclosure only needs two USB connections. The key design consideration is validating power budget and enumeration behavior across the complete hub board rather than relying on controller specifications alone.
推荐
Bus-Powered USB Expansion Accessory
The verified Infineon description specifically positions CY7C65621-56LTXI for a two-port single-TT bus-powered application, making it relevant to accessories that obtain power from the USB bus. The controller can manage two downstream connections while communicating with the host through its integrated USB Serial Interface Engine. Designers should calculate upstream and downstream current requirements, ensure the hub complies with the applicable USB power rules, and provide protection against inrush and ESD events. The supplied data does not specify the maximum bus current, so that value must be taken from the official datasheet before release.
推荐
USB Docking Product
CY7C65621-56LTXI can serve as the hub-control element in a compact docking product where one upstream USB connection must feed two downstream peripherals. Its verified USB 2.0 Full Speed and High Speed support is appropriate for a product that must negotiate device speed across multiple attached peripherals. The PCB should keep high-speed traces short and controlled, provide connector return paths, and route low-speed and high-speed pairs according to the manufacturer recommendations. Firmware and descriptor configuration must be validated with representative devices before production because the supplied web snippets do not enumerate descriptor limitations.
推荐
Embedded USB Expansion Board
For an embedded USB expansion board, CY7C65621-56LTXI provides a dedicated way to manage two downstream USB ports instead of requiring the host processor to emulate hub functions. The 56-QFN footprint supports compact surface-mount construction, while the exposed pad can improve heat spreading when the device operates continuously. A production layout should include solid ground distribution, short return paths, controlled impedance routing, and accessible test points. Because the available verified material does not state pin assignments or recommended PCB stack-up details, those items must be taken directly from the manufacturer documentation.
推荐
Industrial USB Interface Module
CY7C65621-56LTXI may be used in an industrial USB interface module that needs a defined two-port expansion path. The I-grade ordering designation is verified by the manufacturer page, although the supplied data does not state the temperature range, so industrial environmental requirements must be checked in the official ordering information. A robust module should include ESD protection, input-power filtering, connector shielding, and a controlled reference or clock implementation specified by the device documentation. The controller should be validated alongside cables, loads, and downstream devices because system-level USB behavior can differ from lab conditions.
推荐
USB Test and Measurement Front Panel
CY7C65621-56LTXI can be considered for a test or measurement front panel that exposes two USB service or peripheral ports. The two-port arrangement simplifies panel wiring compared with a larger hub, while Full Speed and High Speed operation supports both legacy and higher-speed USB devices. Keep USB differential routing away from noisy analog or switching sections, provide solid return planes, and validate connector launches with appropriate measurements. The verified data does not identify the controller's detailed electrical thresholds or jitter limits, so signal-integrity sign-off must rely on the official datasheet and application guidance.
推荐
推荐产品汇总
工程参考数据： CY7C65621-56LTXI ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | CY7C65631-56LTXI | CY7C65630-56LTXAT | USB2513B-AEZC | USB5532B-5000JZX | KSZ9477STXI |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 56-QFN (8 mm x 8 mm) | 56-QFN (8 mm x 8 mm) | 56-QFN (8 mm x 8 mm) | 56-QFN (8 mm x 8 mm) | 56-QFN (8 mm x 8 mm) | 56-QFN (8 mm x 8 mm) |
关键差异点
- Verified two-port single-TT bus-powered positioning （对比 CY7C65630-56LTXAT)
- USB 2.0 Full Speed and High Speed support （对比 USB2513B-AEZC)
- Integrated host Serial Interface Engine （对比 USB5532B-5000JZX)
设计说明
Treat the 56-QFN exposed pad as both a soldering and thermal feature. Follow the manufacturer land pattern, use a reflow profile suitable for the package, and provide thermal vias only where the PCB stack-up and datasheet guidance allow them. Confirm pad dimensions, mask opening, paste pattern, and assembly tolerances with the official package drawing before releasing artwork.
Route USB differential pairs as controlled-impedance nets over a continuous reference plane, with the manufacturer-recommended pair geometry and length matching. Keep connector launches, protection devices, and branch points physically controlled; excessive stubs and aggressive right-angle routing can degrade USB 2.0 High Speed behavior. Validate the final board with the intended cables and downstream devices.
The verified application description identifies a 3.3 V, bus-powered two-port hub. The designer must verify upstream current limits, downstream inrush behavior, regulator headroom, and protection-device drop from the official electrical documentation. Do not infer the maximum USB current from the 3.3 V label; the available data does not provide that limit.
Do not select a same-package candidate as a drop-in replacement solely because it uses a 56-QFN outline. The supplied cross-reference results identify CY7C65631-56LTXI and CY7C65630-56LTXAT but do not prove identical pin assignments, firmware, port count, electrical limits, or USB behavior. Compare the official datasheets and validate enumeration before substitution.
合规信息
The verified excerpts identify the manufacturer, USB function, package, voltage, application configuration, and I-grade designation, but do not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements.
