CY7C65632-28LTXC - 4-Port USB 2.0 Hub Controller | Infineon
MPN: CY7C65632-28LTXC ✓ AktifCY7C65632-28LTXC Genel Bakış
A USB hub controller is a system-level interface semiconductor that manages USB traffic, port power, enumeration, and device attachment across multiple USB ports. Within the product hierarchy, this controller belongs to the USB interface controller family, which is part of interface integrated circuits and broader semiconductor connectivity solutions. Unlike a passive USB splitter, an active hub controller can manage four downstream ports, provide port-status control, and support configuration through GPIOs or EEPROM.
The verified feature set includes integrated upstream and downstream termination resistors, integrated port-status indicator control, a 24 MHz external crystal with an integrated PLL, and in-system EEPROM programming. These functions reduce external support circuitry and simplify implementation of a bus-powered or self-powered USB hub. The single-TT topology also gives designers a defined method for sharing a USB high-speed path among attached devices.
The controller belongs to the EZ-USB HX2VL family and is identified by the Infineon product page as a four-port, single-TT, GPIO- and EEPROM-configurable hub controller. The verified operating-temperature range is 0°C to 70°C, identifying it as a commercial-temperature C-grade option rather than an industrial- or automotive-temperature device.
Typical uses include USB connection hubs, docking stations, peripheral-sharing equipment, card readers, printers, and embedded USB expansion products. Designers should pay particular attention to power-enumeration requirements, downstream-port current limits, USB high-speed routing, crystal timing, and the fact that the C-grade part is limited to 0°C to 70°C.
The key design consideration is that correct USB hub operation depends on the complete power and signal system, not only the controller IC. Provide the required bypass capacitors, correctly route high-speed differential pairs, maintain compliant termination and ESD protection, and implement the required USB power switching. The target's integrated termination and PLL simplify those blocks, but they do not eliminate validation of the assembled hub against the applicable USB requirements.
This page combines the verified Infineon and distributor data with a package-aware comparison, practical implementation guidance, and clearly marked data gaps. It helps engineers separate confirmed specifications from details that must be checked in the manufacturer datasheet before schematic release or PCB layout.
Drop-in alternatifler için CY7C65632-28LTXC — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu Serideki Variantlar
Yedek parça uyumlu olan aynı serideki modeller CY7C65632-28LTXC (aynı form faktörü ve ayağa oturma) — farklı olan Operating Temperature, Package, RoHS Status, Supply Voltage, Clock Source.
CY7C65642-28LTXCT
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Veri Şablonunu Görüntüle →CY7C65632-28LTXC Özellikler
| Product Type | USB 2.0 hub controller |
| Series | EZ-USB HX2VL |
| Number of Downstream Ports | Up to 4 ports |
| Hub Topology | Single-TT four-port hub |
| Besleme Gerilimi | 3.3 V |
| İşletim Sıcaklığı | 0°C to 70°C |
| Temperature Grade | C-grade |
| Paket | 28-pin QFP bulk |
| Package Height | 0.90 mm |
| Clock Source | 24 MHz external crystal |
| PLL | Integrated |
| Upstream Termination Resistors | Integrated |
| Downstream Termination Resistors | Integrated |
| Port Status Indicator Control | Integrated |
| Configuration | Configurable with GPIOs and EEPROM |
| EEPROM Programming | In-system |
| USB Standard | USB 2.0 |
| USB Interface Class | USB interface controller |
| Montaj Türü | Surface mount |
| RoHS Durumu | Compliant |
CY7C65632-28LTXC 0.90 mm Pin Yapısı Kılavuzu
CY7C65632-28LTXC (0.90 mm paket) için pin yapısı. Pin numaralandırma, işlevleri ve bağlantı şemaları üretici veri kitapçığında tanımlanmıştır. Doğru ayak ve soldurma kılavuzları için onu referans alın.
Ayrıntılı pin çıkış verisi mevcut değil: CY7C65632-28LTXC.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
CY7C65632-28LTXC için uygundur 6 uygulamas: Four-Port USB 2.0 Hub, USB Docking Station, USB Peripheral Sharing Hub, USB Card Reader Hub, USB Printer Hub, Embedded USB Connectivity Module.
Four-Port USB 2.0 Hub
The CY7C65632-28LTXC fits a four-port USB 2.0 hub because it supports up to four downstream ports in a single-TT topology while operating from a 3.3 V supply. Place the controller between the upstream host connection and four downstream USB connectors, using its integrated upstream and downstream termination resistors to reduce external passive circuitry. The 24 MHz external crystal with an integrated PLL provides the timing reference, while GPIO or EEPROM configuration allows port behavior to be tailored to the product. The main design tradeoff is that correct hub operation still requires compliant downstream power switching, device enumeration, over-current handling, and USB signal routing; the controller simplifies the digital hub implementation but does not replace system-level USB validation.
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USB Docking Station
The CY7C65632-28LTXC is suitable for a compact docking station that expands one upstream USB connection into as many as four downstream devices. Its single-TT architecture provides a defined shared-bus implementation, while integrated port-status control can support per-port indicators without a separate status-controller IC. The 3.3 V operating requirement and 0°C to 70°C commercial range suit office and consumer environments. In a real dock, however, engineers must budget regulator headroom for downstream loads, maintain USB high-speed impedance continuity, provide correct ESD protection, and confirm that downstream power-switching meets the selected USB power specification before schematic approval.
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USB Peripheral Sharing Hub
The CY7C65632-28LTXC can centralize USB connectivity in a peripheral-sharing hub, allowing one host port to serve up to four attached devices. Its integrated termination resistors and status-indicator control help constrain board area, while the integrated PLL referenced to a 24 MHz crystal supports stable hub timing. The controller's 28-pin QFP bulk package is appropriate for a product assembled with conventional surface-mount production processes. Designers should still validate enumeration behavior under simultaneous attach and removal, provide adequate bus capacitance margin, and use a power architecture that avoids excessive inrush when multiple downstream devices start. Firmware or configuration must match the intended enumeration and port-removal policy.
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USB Card Reader Hub
The CY7C65632-28LTXC can manage multiple card-reader connections behind a single upstream USB port in a multi-format reader. The verified four-downstream-port capability directly matches this class of product, while GPIO support can assist with status and mode-control functions. Its 3.3 V operation simplifies coordination with modern USB-powered accessories, and the C-grade 0°C to 70°C range is appropriate for indoor consumer equipment. The implementation must account for the combined current of all downstream devices, ensure the hub remains within USB enumeration and power limits, and preserve high-speed differential routing through connectors and card-reader branches. A thermal review is also required if several ports can operate simultaneously at elevated current.
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USB Printer Hub
The CY7C65632-28LTXC is a practical choice for a shared USB printer hub because it provides up to four downstream ports and integrated status control in a single controller. GPIO or EEPROM-based configuration can support product-specific port behavior, and the 24 MHz crystal interface with integrated PLL simplifies clock implementation compared with a design requiring a separate PLL. The controller does not itself solve printer power requirements: each downstream port may need independent switching, current limiting, and correct attachment signaling. Engineers should validate sustained printing loads, inrush behavior, thermal performance of the power stage, and full-speed or high-speed signal routing for every supported printer class.
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Embedded USB Connectivity Module
The CY7C65632-28LTXC fits an embedded USB connectivity module that converts one host interface into a multiport USB hub. The 28-pin QFP bulk package supports compact yet serviceable industrial or medical enclosure designs, while integrated termination resistors and port-status control reduce the external component count. The 0°C to 70°C specification must be compared with the enclosure's worst-case internal temperature because self-heating power regulators and downstream devices can raise that temperature. Layout should preserve USB differential-pair geometry, provide a short return path, separate switching-regulator and digital return currents, and include test points that permit enumeration and bus-eye validation without redesigning the assembly.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: CY7C65632-28LTXC — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | CY7C65642-28LTXC | CY7C65632-28LTXCT | CY7C65632-28LTXC | CY7C65642-28LTXC | CY7C65632-28LTXCT |
|---|---|---|---|---|---|---|
| Package | 28-pin QFP bulk | 28-pin QFP (RGW) | 28-QFN (5x5) | 28-pin QFP bulk | 28-pin QFP (RGW) | 28-QFN (5x5) |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
Ana Farklılayıcılar
- Confirmed four-port single-TT hub capability (karşılaştırma:CY7C60333-LTXC)
- Integration reduces hub support circuitry (karşılaştırma:FT120Q-R)
- Commercial-temperature C-grade implementation (karşılaştırma:CY7C60413-16LKXCT)
- Direct manufacturer product-page support (karşılaştırma:CY7C65642-28LTXC)
Tasarım Notları
Route the upstream and downstream USB differential pairs as controlled-impedance nets with continuous reference planes and minimal stubs. Keep the 24 MHz crystal loop compact and place its ground return directly to the controller ground plane. Although upstream and downstream termination resistors are integrated, the layout still needs short connector-to-controller paths and carefully managed return-current continuity. Review the manufacturer reference layout and connector footprint against the chosen USB signal rate before release.
Do not assume that a 3.3 V controller supply covers the hub's total downstream power. Design the power path for the maximum supported load, inrush during device attachment, and any self-powered-port requirements; include switching, current limiting, and over-current behavior appropriate to the target USB application. Verify that the regulator has enough headroom at minimum input while maintaining the controller's required 3.3 V supply across temperature and load.
The verified distributor material contains conflicting package descriptions for related listings: the target is described as a 28-pin QFP bulk part, while CY7C65632-28LTXCT is listed as 28-QFN (5x5), and one secondary result incorrectly associates a 56-QFN package. Do not infer footprint compatibility from the MPN suffix alone. Download the official datasheet, compare every pin and the package drawing, and confirm the top-side marking before committing a replacement to an existing PCB.
The CY7C65632-28LTXC is rated from 0°C to 70°C, so enclosure temperature and local self-heating must be included in the thermal design. Estimate controller dissipation from the verified 3.3 V supply and measured or datasheet current, then compare the resulting junction-temperature estimate with the datasheet limit. Most hub heat may come from downstream power conversion and switching elements, so thermal validation should cover the complete assembled product under maximum port activity rather than the controller IC alone.
Uyumluluk Bilgisi
The supplied PartGenie comparison excerpt explicitly lists the CY7C65632-28LTXC as RoHS compliant. No verified REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification statement was provided.
