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USB2514I-HZH - USB 2.0 HS 4-Port Hub Controller | Microchip
Microchip Technology USB2514I-HZH is a USB 2.0 high-speed four-port hub controller packaged in a 48-pin VQFN with an exposed pad and supplied in a tray. The verified product information identifies it as a low-speed, full-speed, and high-speed hub controller operating from a 3.3 V supply. Its four-port USB interface architecture makes it relevant to systems that need to expand a single host USB connection across several peripherals while retaining USB 2.0 high-speed support. A USB hub controller is an interface integrated circuit within the broader USB interface-controller hierarchy. It manages traffic between an upstream USB host and multiple downstream USB ports, allowing peripheral devices such as keyboards, storage adapters, communications equipment, and human-interface devices to share one host port. A four-port USB 2.0 implementation is especially relevant to embedded systems, industrial control panels, test benches, and compact peripheral systems that require more attachment points than a host controller exposes directly. The verified product data highlights three defining characteristics: USB 2.0 high-speed operation, four downstream hub ports, and a 48-pin VQFN exposed-pad package. The USB2514I-HZH is also identified as an industrial-temperature-rated part. Microchip describes the related USB251xB family as cost-effective and power-efficient while using MultiTRAK technology to support mixed-speed USB data throughput. These features distinguish it from basic four-port repeater devices by placing port management, signaling, and USB connectivity in one dedicated controller. The part operates from 3.3 V and supports low-speed, full-speed, and high-speed USB devices, allowing a mixed-speed peripheral set to share the same hub. That mixed-speed capability is useful when a design includes legacy USB devices alongside high-speed peripherals. The exposed-pad package also provides a defined thermal and electrical land pattern that must be connected according to the manufacturer layout guidance rather than treated as an unused pin. Typical applications include industrial USB expansion, embedded instrumentation, laboratory data-acquisition systems, USB-to-serial equipment, and peripheral hubs for host computers or embedded controllers. In these systems, the hub can consolidate several external functions behind one upstream USB connection while the controller manages enumeration, downstream port behavior, and data traffic. The USB2422-CP-TR and USB2517I-JZX are related USB interface components available through XAIPART for broader design evaluation. Designers should verify the complete pin assignment, electrical limits, crystal or clock requirements, port-current budget, and exposed-pad connection against the manufacturer datasheet before layout release. The verified distributor information confirms a 48-pin VQFN exposed-pad package and tray packaging, but it does not provide the complete pinout, operating-temperature interval, power dissipation, or recommended external-component values. This product record combines verified manufacturer and distributor information with an explicit comparison of available same-package alternatives, commercial pricing, and application guidance. Missing technical values are marked rather than guessed, allowing engineers to distinguish confirmed USB2514I-HZH characteristics from details that still require direct datasheet verification.
USB2517-JZX - 7-Port USB 2.0 Hi-Speed Hub Controller | Microchip
The Microchip USB2517-JZX is a versatile, cost-effective, and power-efficient 7-port USB 2.0 Hi-Speed hub controller IC in a 64-pin QFN (9x9 mm) package with exposed thermal pad, designed for low-power, small-footprint embedded USB applications. It provides seven downstream USB ports, supports Low-Speed (1.5 Mbps), Full-Speed (12 Mbps), and Hi-Speed (480 Mbps) downstream devices, and operates from a 1.8V/3.3V supply rail. A MultiTRAK™ multi-transaction translator enables concurrent Full-/Low-Speed traffic on multiple downstream ports without bandwidth starvation, and the upstream port supports Hi-Speed operation in accordance with the USB 2.0 specification (April 27, 2000, with 12/7/2000 and 5/28/2002 errata). A USB hub controller is an Interface IC that aggregates multiple USB peripherals behind a single upstream port, presenting each downstream port to the host as an independent device while managing enumeration, power, and transaction translation. Within the broader system hierarchy, the USB2517-JZX sits at Interface IC → USB Controller → USB Hub Controller → USB 2.0 Hi-Speed Hub. Hub controllers are essential building blocks of docking stations, monitors, embedded industrial PCs, and consumer electronics that need to expand a single host USB root port into several usable downstream ports. Key features include per-port or ganged power switching, individual port over-current sensing, integrated 1.5 kΩ upstream pull-up resistor, OTP/serial EEPROM configuration, and support for both bus-powered and self-powered hub topologies. The 64-QFN package with EP provides low thermal resistance and a small 9x9 mm PCB footprint. The device supports SMBus or I²C configuration, complies with USB Battery Charging Specification 1.1 pre-configurations, and integrates an internal 3.3V regulator requiring only a single 3.3V supply or a 5V VBUS-derived rail. The architecture combines a USB 2.0 physical layer (PHY) and a serial interface engine (SIE) per port with a hub repeater and a MultiTRAK transaction translator. This allows multiple Full-/Low-Speed devices to communicate simultaneously with the host at full USB 2.0 bandwidth, eliminating the bandwidth bottleneck found in single-TT hub designs. The hub repeater handles connect/disconnect, suspend/resume, and reset signaling, while per-port PHYs provide signal integrity at 480 Mbps across PCB traces of typical lengths. Typical applications include USB port expansion in monitors, docking stations, industrial PCs, embedded computing, and consumer hubs. It is also used in test equipment, automotive infotainment head units, and any product that must turn one host port into seven USB 2.0 ports. The 1.8V/3.3V flexible supply and small 9x9 mm QFN make it ideal for space-constrained embedded designs. When designing with this part, ensure that the upstream port's 90 Ω differential pair is routed as a length-matched, impedance-controlled USB 2.0 microstrip with a continuous reference ground plane. Place the 480 MHz crystal or oscillator reference as close as possible to the XI pin, and decouple each VDD pin with a 0.1 µF X7R ceramic cap tied to a solid ground pour. A common pitfall is forgetting to populate the upstream series choke or ESD protection array; the hub will enumerate but fail USB-IF compliance without these. This page synthesizes current distributor pricing, same-brand drop-in alternatives from the USB251x family, and practical design notes that go beyond the manufacturer datasheet to help engineers shorten time-to-prototype.
USB2517-JZX-TR - 7-Port USB 2.0 Hi-Speed Hub Controller | Microchip (Tape & Reel)
The Microchip USB2517-JZX-TR is a versatile, cost-effective, and power-efficient 7-port USB 2.0 Hi-Speed hub controller IC in a 64-pin QFN (9x9 mm) package with exposed thermal pad, designed for low-power, small-footprint embedded USB applications. It provides seven downstream USB ports, supports Low-Speed (1.5 Mbps), Full-Speed (12 Mbps), and Hi-Speed (480 Mbps) downstream devices, and operates from a 1.8V/3.3V supply rail. A MultiTRAK™ multi-transaction translator enables concurrent Full-/Low-Speed traffic on multiple downstream ports without bandwidth starvation, and the upstream port supports Hi-Speed operation in accordance with the USB 2.0 specification (April 27, 2000, with 12/7/2000 and 5/28/2002 errata). A USB hub controller is an Interface IC that aggregates multiple USB peripherals behind a single upstream port, presenting each downstream port to the host as an independent device while managing enumeration, power, and transaction translation. Within the broader system hierarchy, the USB2517-JZX-TR sits at Interface IC → USB Controller → USB Hub Controller → USB 2.0 Hi-Speed Hub. Hub controllers are essential building blocks of docking stations, monitors, embedded industrial PCs, and consumer electronics that need to expand a single host USB root port into several usable downstream ports. Key features include per-port or ganged power switching, individual port over-current sensing, integrated 1.5 kΩ upstream pull-up resistor, OTP/serial EEPROM configuration, and support for both bus-powered and self-powered hub topologies. The 64-QFN package with EP provides low thermal resistance and a small 9x9 mm PCB footprint. The device supports SMBus or I²C configuration, complies with USB Battery Charging Specification 1.1 pre-configurations, and integrates an internal 3.3V regulator requiring only a single 3.3V supply or a 5V VBUS-derived rail. The architecture combines a USB 2.0 physical layer (PHY) and a serial interface engine (SIE) per port with a hub repeater and a MultiTRAK transaction translator. This allows multiple Full-/Low-Speed devices to communicate simultaneously with the host at full USB 2.0 bandwidth, eliminating the bandwidth bottleneck found in single-TT hub designs. The hub repeater handles connect/disconnect, suspend/resume, and reset signaling, while per-port PHYs provide signal integrity at 480 Mbps across PCB traces of typical lengths. Typical applications include USB port expansion in monitors, docking stations, industrial PCs, embedded computing, and consumer hubs. It is also used in test equipment, automotive infotainment head units, and any product that must turn one host port into seven USB 2.0 ports. The 1.8V/3.3V flexible supply and small 9x9 mm QFN make it ideal for space-constrained embedded designs. When designing with this part, ensure that the upstream port's 90 Ω differential pair is routed as a length-matched, impedance-controlled USB 2.0 microstrip with a continuous reference ground plane. Place the 480 MHz crystal or oscillator reference as close as possible to the XI pin, and decouple each VDD pin with a 0.1 µF X7R ceramic cap tied to a solid ground pour. A common pitfall is forgetting to populate the upstream series choke or ESD protection array; the hub will enumerate but fail USB-IF compliance without these. This page synthesizes current distributor pricing, same-brand drop-in alternatives from the USB251x family, and practical design notes that go beyond the manufacturer datasheet to help engineers shorten time-to-prototype.
USB2517I-JZX - 7-Port USB 2.0 Hub | Microchip (Tape & Reel)
The Microchip Technology USB2517I-JZX is a USB 2.0 seven-port hub controller with seven downstream ports, USB 2.0 compliance, and a 64-pin QFN package measuring 9 mm by 9 mm. It is designed for embedded USB systems requiring low-power, configurable hub expansion. The controller supports Low-Speed, Full-Speed, and Hi-Speed downstream devices when operating as a Hi-Speed hub, while its upstream attachment can operate as a Full-Speed or Full-/Hi-Speed hub. A USB hub controller is an interface semiconductor that manages traffic between one upstream USB host and multiple downstream devices. It belongs to the USB interface controller, interface IC, and connectivity semiconductor hierarchy. The USB2517 family uses MultiTRAK technology to support mixed-speed USB environments while helping embedded designs consolidate multiple peripheral connections behind one upstream host interface. The USB2517I is identified in the verified data as the industrial-temperature-rated member of the USB2517 family. Its 64-QFN 9 x 9 mm package supports compact embedded implementations, while the integrated hub function reduces the need for discrete USB routing and control components. The device is described by Microchip as low power and OEM configurable, making it suitable for system-level USB port expansion where firmware, hub configuration, and downstream-port requirements are controlled by the OEM. Typical embedded uses include industrial equipment, test systems, printers, storage appliances, communications equipment, and other products that need more USB connections than a host controller provides directly. Because USB2517I is a hub rather than a host controller, the system still requires an upstream USB host or host-capable controller. The hub’s downstream devices can include low-speed, full-speed, and hi-speed USB peripherals, subject to the operating mode and system configuration. Designers should verify the complete pinout, power requirements, crystal or clock implementation, port-enable behavior, and configuration requirements against the manufacturer datasheet before layout. The 64-QFN package also requires careful exposed-pad thermal and assembly planning. This page combines verified manufacturer, distributor, and datasheet information with practical design context; unsupported electrical details remain marked for data completion rather than inferred.
USB2517I-JZX-TR - 7-Port USB 2.0 Hub | Microchip
The Microchip Technology USB2517I-JZX-TR is a USB 2.0 seven-port hub controller with seven downstream ports, USB 2.0 compliance, and a 64-pin QFN package measuring 9 mm by 9 mm. It is designed for embedded USB systems requiring low-power, configurable hub expansion. The controller supports Low-Speed, Full-Speed, and Hi-Speed downstream devices when operating as a Hi-Speed hub, while its upstream attachment can operate as a Full-Speed or Full-/Hi-Speed hub. A USB hub controller is an interface semiconductor that manages traffic between one upstream USB host and multiple downstream devices. It belongs to the USB interface controller, interface IC, and connectivity semiconductor hierarchy. The USB2517 family uses MultiTRAK technology to support mixed-speed USB environments while helping embedded designs consolidate multiple peripheral connections behind one upstream host interface. The USB2517I is identified in the verified data as the industrial-temperature-rated member of the USB2517 family. Its 64-QFN 9 x 9 mm package supports compact embedded implementations, while the integrated hub function reduces the need for discrete USB routing and control components. The device is described by Microchip as low power and OEM configurable, making it suitable for system-level USB port expansion where firmware, hub configuration, and downstream-port requirements are controlled by the OEM. Typical embedded uses include industrial equipment, test systems, printers, storage appliances, communications equipment, and other products that need more USB connections than a host controller provides directly. Because USB2517I is a hub rather than a host controller, the system still requires an upstream USB host or host-capable controller. The hub’s downstream devices can include low-speed, full-speed, and hi-speed USB peripherals, subject to the operating mode and system configuration. Designers should verify the complete pinout, power requirements, crystal or clock implementation, port-enable behavior, and configuration requirements against the manufacturer datasheet before layout. The 64-QFN package also requires careful exposed-pad thermal and assembly planning. This page combines verified manufacturer, distributor, and datasheet information with practical design context; unsupported electrical details remain marked for data completion rather than inferred.
USB2524-ABZJ - USB 2.0 4-Port Switching Hub | Microchip
The Microchip Technology USB2524-ABZJ is a USB 2.0 multi-switch hub controller with two upstream host connections, four downstream ports, and a 56-QFN-EP surface-mount package measuring 8 mm by 8 mm. Its stated operating supply range is 3.0 V to 3.6 V, while USB 2.0 Hi-Speed operation supports 480 Mbps signaling. The controller provides electronic reconfiguration and reassignment of any downstream port to either upstream host on the fly. A USB hub controller is an interface integrated circuit that coordinates communication between one or more USB hosts and attached peripherals. In the broader hierarchy, USB2524-ABZJ belongs to the USB interface controller family, which sits within interface ICs and broader semiconductor devices. Unlike a conventional four-port hub with only one upstream connection, this device combines a Hi-Speed hub with switching logic so two hosts can share the same downstream device set. The USB2524 is identified by Microchip as the industry's first USB switching hub combining USB Hi-Speed hub and switching functions in one device. Its two upstream ports and four downstream ports enable USB device sharing, dynamic host ownership, and reassignment without physically moving equipment. All required resistors on the USB ports are integrated according to the manufacturer data sheet, reducing discrete termination content on the PCB. Operationally, the controller is intended to work with an external USB power-distribution switch device. That external device controls VBUS switching to downstream ports, limits current, and senses over-current conditions. The separation between data-port switching and power-distribution control allows a board designer to use a suitably rated power switch instead of integrating high-current switching entirely inside the 56-QFN controller. Typical uses include shared test benches, industrial peripheral-sharing systems, embedded equipment with multiple USB hosts, kiosk configurations, and automatic test equipment that needs a peripheral to move between hosts. The 3.0 V to 3.6 V supply range suits conventional 3.3 V digital systems, although the complete board must also meet USB signal-integrity, impedance, VBUS, and current-protection requirements. Layout is the principal implementation constraint for this 56-QFN-EP device. Differential USB data pairs require controlled impedance and minimized mismatch, while the exposed pad needs a deliberate thermal and ground strategy. Designers should also follow the manufacturer's USB layout guidance and confirm external power-switch selection, port-current budgets, EEPROM requirements, and all pin functions against the current USB2524 data sheet. This page consolidates the verified manufacturer and distributor information, distinguishes confirmed electrical facts from unspecified parameters, and provides application, sourcing, and design guidance. It also records the absence of a verified pin-to-pin substitute rather than presenting functionally similar or differently packaged USB controllers as drop-in replacements.
USB2601-NU-05 - USB 2.0 Hub Controller | Microchip Technology
The Microchip Technology USB2601-NU-05 is a USB 2.0 high-speed compound interface controller combining a three-port USB hub with a flash media controller, operating from a 3.3 V supply in a 128-lead TQFP package measuring 14 x 14 mm. Its integrated flash controller is permanently assigned to port 1 of the internal USB hub, while the USB 2.0 hub manages upstream and downstream connectivity. A USB hub controller is a specialized interface IC that coordinates data traffic between one upstream host port and multiple downstream peripherals. In the broader semiconductor hierarchy, this USB interface controller belongs to the USB controller family, interface controllers, and power-management and connectivity semiconductor systems. The USB2601 family combines hub and removable-storage functions instead of requiring two unrelated controller ICs. The USB2601-NU-05 supports USB 2.0 high-speed operation and incorporates a flash media controller with FET support. The three downstream USB hub ports make the device useful in compact docks, card readers, printers, media appliances, and embedded systems that need to consolidate external storage and USB peripheral connections. Its 3.3 V operating supply also simplifies integration with contemporary USB host controllers. The 128-TQFP package provides a high pin count for separate USB data, flash-media, power, configuration, and control functions. Surface-mount construction supports automated assembly and compact motherboard layouts. Because the controller contains both high-speed digital interfaces and external media-facing circuitry, board design must preserve controlled impedance routing, solid supply grounding, and short return paths around connector and flash-device connections. Typical applications include multifunction desktop peripherals, USB-connected card readers, portable media docks, embedded data-acquisition equipment, and compact host systems requiring more than one USB port. Integrating the flash controller directly into the hub reduces board-level component count compared with separate hub and storage bridge solutions, provided the selected media interface and supported card formats match the intended product requirements. A key design consideration is the permanent connection of the flash media controller to hub port 1. System architects should therefore treat that port as the dedicated storage path and plan the other two downstream ports for peripherals. Power budgeting, USB enumeration, media-card support, connector data-path routing, and device-capability configuration should be validated together before the PCB is released for production. This product record combines the manufacturer function description, package and supply information, source-linked documentation, application-specific engineering guidance, and a restricted drop-in comparison. It is intended to help engineers identify the correct USB interface controller, distinguish compatible family variants, and plan the surrounding USB and flash-media implementation more efficiently.
USB2602-NU-02 - USB 2.0 4-Port Hub Controller | Microchip
The Microchip Technology USB2602-NU-02 is a USB 2.0 compound-device controller that combines a three-port downstream USB hub and a Flash Card Media Controller in a 128-lead TQFP package. Its operating supply range is 3 V to 3.6 V, and the listed -NU-02 ordering code identifies the USB 2.0 interface, Flash Media, four-port hub configuration supplied in a 14 mm by 14 mm TQFP package. The controller is intended to sit between one upstream USB host and downstream USB devices while also supporting Flash media connectivity. A USB hub controller is an interface IC within the broader USB interface-controller and semiconductor hierarchy. It manages port connectivity, power distribution, and data transfer between an upstream host and downstream peripherals. A compound device combines multiple USB functions within one controller, allowing the USB2602 to provide hub and Flash media functionality without requiring a separate hub controller for each function. This integration can reduce board-level component count and simplify enclosure and product design. The USB2602 family supports xD Picture Card format for licensees, as stated by the manufacturer product page. Its USB 2.0 architecture targets host-side accessories, card readers, multifunction peripherals, and embedded USB products requiring a compact hub-and-media-controller solution. The supplied distributor records identify the component as a four-port hub controller and list DigiKey and Mouser as sources for technical data, pricing, and availability. The device operates from a 3 V to 3.6 V supply, allowing use with 3.3 V system rails. Because USB devices impose strict signal-integrity, enumeration, and current-management requirements, board implementation should follow the manufacturer reference design and recommended external-component layouts rather than treating the controller as a generic USB switch. Input and output impedance-controlled traces, short differential connections, solid ground planes, and careful separation between high-current and low-level data paths are particularly important in compact four-port implementations. Typical installations include USB 2.0 card readers, multifunction docking products, removable-media appliances, and compact embedded USB hubs. The integrated hub and Flash media functions are useful where one upstream connection must serve multiple USB peripherals while also reading Flash-based storage. Engineers should confirm host compatibility, supported media formats, electrical characteristics, and enclosure requirements against the current manufacturer documentation before production release. The principal design consideration is validating the complete USB power, firmware, and signal path rather than selecting the IC from headline hub features alone. The 3.3 V supply requirement, upstream and downstream routing, downstream-port current budget, Flash interface implementation, and mechanical package all affect whether the controller is suitable for a given product. This page combines manufacturer function data, distributor availability references, package information, sourcing links, and application-focused engineering guidance. It also distinguishes verified USB2602-NU-02 data from suffix variants whose detailed electrical and pin-level differences are not supplied in the source material, helping engineers make a safer procurement or replacement decision.
USB2602-NU-05 - USB 2.0 Hub Controller | Microchip Technology
The Microchip Technology USB2602-NU-05 is a USB 2.0 compound-device controller that connects one upstream USB host port to a three-port USB hub and a flash-card media controller. The device operates from a 3.3 V supply and is packaged in a surface-mount 128-lead TQFP measuring 14 mm by 14 mm. Its integrated hub and removable-media control make it suited to compact USB connectivity equipment. A USB compound-device controller combines multiple USB functions within one device. In this case, the USB2602 manages the relationship between a single upstream host connection, three downstream USB ports, and supported flash-card media functions. This architecture reduces the number of separate USB interface components required in systems that combine USB expansion with removable storage. The manufacturer identifies the device as a specialized controller interface IC. The primary feature set includes USB 2.0 operation, one upstream connection, three downstream hub ports, and flash-card media-controller capability. The -05 ordering code is associated with a 128-TQFP package, and the 3.3 V operating supply supports integration into conventional consumer and industrial electronics. The USB2602 family also supports xD Picture Card format for licensees using that removable-media format. Technically, the USB2602 belongs to the interface-controller category rather than the general-purpose microcontroller category. Its firmware-specific host interface, hub resources, and media-controller logic provide a consolidated implementation of a multi-function USB peripheral. The 14 mm by 14 mm TQFP footprint offers 128 electrical contacts but requires careful escape routing because its lead pitch makes routed PCB traces more demanding than a fine-pitch BGA. Typical uses include USB card readers, multifunction printers, portable media appliances, industrial data-acquisition equipment, and desktop or docking accessories. The three downstream ports allow several USB peripherals to share one upstream host connection, while the flash-card controller supports removable-storage workflows. The integrated design can simplify system partitioning when product requirements call for both peripheral expansion and card access. Designers should confirm USB routing, transceiver connections, media-format requirements, firmware support, and peripheral load limits against the manufacturer documentation before layout release. Decoupling must be placed close to the supply pins, while high-speed USB traces require controlled impedance, short return paths, careful connector placement, and avoidance of splits across plane boundaries. This product page consolidates the manufacturer-defined USB architecture, package and supply facts, sourcing guidance, application analysis, and engineering checks needed to evaluate the USB2602-NU-05. It also separates confirmed product attributes from parameters that must be checked in the full manufacturer datasheet and firmware documentation before schematic or PCB sign-off.
USB2640-HZH-02 - 2-Port USB 2.0 Hub Controller | Microchip
The Microchip Technology USB2640-HZH-02 is a cost-efficient, power-efficient USB interface IC that combines a 2-port Hi-Speed USB 2.0 hub controller with an integrated multi-format flash media controller. The device is supplied in a lead-free, RoHS-compliant 48-pin QFN package measuring 7 x 7 mm. Its primary role is to provide USB port expansion and flash-card interface functionality within desktop, notebook, embedded, and industrial equipment. A USB hub controller is an interface IC that manages a USB host connection and distributes that connection across multiple downstream ports. The USB2640 extends this basic hub role by integrating a flash media card reader and writer. The combination can reduce the number of separate USB interface components required in a system, while providing a dedicated path between the USB host and supported flash media. Key device attributes include support for Hi-Speed USB 2.0 operation, two downstream hub ports, integrated multi-format flash media control, a 48-pin 7 x 7 mm QFN package, and a lead-free RoHS-compliant ordering code. The HZH package designation identifies the 48-pin QFN configuration, while the -02 suffix identifies the specific internal ROM firmware revision within the USB2640 ordering family. The USB2640 architecture is intended to combine USB expansion and flash media connectivity in a single controller. This integration is especially useful in compact systems where component count, board area, and power efficiency are important. A system designer still must validate the exact flash formats, electrical limits, clock requirements, signal-routing rules, and USB host compatibility for the intended product configuration before releasing a production design. Typical uses include USB flash-card readers, multifunction peripherals, set-top and media appliances, desktop and notebook accessories, industrial data-transfer equipment, and embedded systems that need both USB hub expansion and removable flash storage. The 7 x 7 mm QFN package also requires careful exposed-pad layout and manufacturing control to achieve reliable electrical and thermal performance. For implementation, begin with the manufacturer’s USB2640 reference schematic and pin-description table, then reproduce its recommended crystal, capacitor, USB routing, and exposed-pad arrangements. Do not infer pin functions from the package drawing alone. Confirm the required flash-media formats, firmware revision behavior, host-controller requirements, and all operating limits for USB2640-HZH-02 in the latest production documentation. This page combines the manufacturer’s product description, exact package information, firmware ordering details, cross-reference findings, and practical implementation guidance. It also distinguishes true drop-in alternatives from functional equivalents that require design verification, helping engineers evaluate replacement options without overlooking firmware, media-format, or pin-compatibility constraints.
USB2641-HZH-02 - 2-Port USB 2.0 Hub Controller | Microchip
The Microchip Technology USB2641-HZH-02 is a specialized interface controller that combines a two-port Hi-Speed USB 2.0 hub with an interface for USB host connectivity to flash media cards. The device supports USB 2.0 operation, uses a 48-QFN surface-mount package measuring 7 mm by 7 mm, and is identified by Microchip as the USB2641 family member for two-port hub and flash-media interface designs. A USB hub controller is an interface integrated circuit that manages multiple USB ports connected to one upstream host connection. A flash media interface controller extends this USB connectivity to removable or embedded flash media. Together, these functions place the USB2641 within the hierarchy of USB interface controller, USB hub controller, interface IC, and broader semiconductor device categories. This combination allows one device to organize USB ports and expose compatible flash-media storage through a host controller. The primary features include support for Hi-Speed USB 2.0, two downstream hub ports, a flash-media card interface, a 48-QFN package, and operation from a 3.3 V supply as identified for this device. The integrated design reduces the number of separate interface components required in equipment that needs both USB hub expansion and flash-media access. Its 7 mm by 7 mm package also supports compact desktop, embedded, and portable equipment layouts. Microchip positions the USB2641 as a cost-effective and power-efficient controller for systems combining a USB host port with flash media. The controller architecture supports programmable device identification and configurable USB descriptors, while the hardware design checklist provides guidance for customizable vendor, product, device, and serial-number information. These capabilities support product identification, customized USB enumeration behavior, and controlled implementation of a multi-function peripheral. Typical applications include USB card readers, multifunction desktop peripherals, printers, set-top equipment, industrial data-acquisition systems, and embedded systems that require both USB hub expansion and flash-media connectivity. The two-port hub function is useful when several USB peripherals must share one host connection. The flash-media interface allows compatible storage to be presented to the host through the same controller. PCB implementation requires careful attention to the USB data paths, power distribution, ground-plane continuity, and exposed-pad thermal management described in the manufacturer design checklist. Place differential USB traces with continuous reference planes and avoid unnecessary branch paths. Follow the manufacturer pin-description and layout guidance when assigning power, ground, USB data, clock, and configuration signals on the 48-QFN footprint. This product page combines the manufacturer product description, exact distributor package identification, official hardware-design guidance, compatible same-family references, and practical implementation considerations. It supports faster part selection while preserving the package, interface, and application distinctions needed to determine whether the USB2641-HZH-02 fits a new design.
USB2642-I/ML - USB 2.0 Hub Card Reader | Microchip
The Microchip Technology USB2642-I/ML is a USB 2.0 high-speed hub and flash media card controller combination IC with two downstream USB ports and an SD/MMC interface, supplied in a 48-QFN 7 mm × 7 mm package. It operates from a 3.3 V supply and supports low-speed, full-speed, and high-speed USB devices. The integrated design combines USB expansion and flash media reader/writer functionality in one controller. A USB hub controller is an interface device that expands one host USB connection into multiple downstream ports while managing USB traffic and device connections. A flash media card controller provides read/write access to supported SD or MMC flash media. In the broader electronics hierarchy, the USB2642 belongs to interface ICs, USB interface controllers, USB 2.0 hub controllers, and combined flash media controllers. The principal verified features are USB 2.0 compliance, high-speed operation, two downstream USB ports, and one SD/MMC flash media card interface. Its 48-QFN package supports compact surface-mount designs, while the exposed-pad package construction provides a defined thermal and electrical land pattern. The device is intended for systems that need local USB port expansion together with removable flash-media connectivity. Typical uses include USB docking stations, compact desktop computers, consumer electronics, card-reader equipment, printers, storage accessories, and embedded USB peripherals. Because the controller consolidates hub and media-card functions, it can reduce the number of separate interface devices required in a compact system. Designers must still account for USB signal routing, connector protection, supply decoupling, card-detect wiring, and the exposed thermal pad when laying out the PCB. For USB2642-I/ML designs, confirm the exact pin functions, electrical limits, reference circuitry, and supported media details against the Microchip datasheet before release. USB high-speed pairs require controlled impedance and careful return-path continuity; card-interface traces should be kept away from noisy switching nodes. The part is not a general-purpose power semiconductor, so a Safe Operating Area chart is not applicable. This page combines the verified manufacturer and distributor information with package, application, procurement, and replacement guidance. It is intended to help engineers identify whether the USB2642-I/ML matches a USB hub plus flash-media architecture before committing the 48-QFN footprint to a PCB layout.
USB2642/ML - USB 2.0 Hub and Card Controller | Microchip
The Microchip Technology USB2642/ML is a USB 2.0 hi-speed hub and flash media card controller combo with 2 downstream USB ports and an SD/MMC interface, supplied in a 48-QFN package. It operates from a 3.3 V supply according to the verified distributor data. The device combines USB expansion and flash media reader/writer integration in one controller. A USB hub controller is an interface semiconductor that manages one upstream USB connection and distributes traffic to downstream ports. A flash media card controller adds access to removable memory through SD or MMC interfaces. The USB2642/ML therefore belongs to the USB interface IC hierarchy: USB controller, interface IC, semiconductor, and embedded connectivity device. The principal features are USB 2.0 high-speed operation, two downstream USB 2.0 ports, and an SD/MMC flash media interface. The verified manufacturer description also identifies the device as a cost-effective, energy-efficient, fully integrated solution. Its integrated design can reduce the need for separate hub and media-reader interface circuitry while supporting both USB expansion and card access. The USB2642/ML is suitable for compact USB hubs, card readers, multifunction peripherals, docking systems, and embedded USB storage products. According to the manufacturer product page, it provides a USB expansion and flash media reader/writer combination in a single chip. The datasheet search results additionally describe sustained flash-media transfer rates exceeding 35 MB/s, although the exact system throughput depends on the attached device and implementation. Designs must follow the manufacturer datasheet for decoupling, USB signal routing, card-interface layout, and exposed-pad thermal management. USB differential pairs should be routed with controlled impedance and minimized discontinuities. The SD/MMC interface and USB connectors should be placed to reduce signal coupling, while the power network should provide low-impedance return paths for both digital and high-current USB loads. This page consolidates the verified manufacturer and distributor information, procurement context, package details, and application guidance for USB2642/ML. It also distinguishes the available same-family Microchip variants without presenting unverified cross-brand replacements as drop-in equivalents.
USB2642T-I/ML - USB 2.0 Hub and Card Controller | Microchip
The Microchip Technology USB2642T-I/ML is a USB 2.0 high-speed hub and flash media card controller combination with two downstream USB 2.0 ports, a 3.3 V interface, and sustained flash-media transfer rates exceeding 35 MB/s. It is housed in a 48-pin 7 mm × 7 mm QFN package with an exposed pad and is designated for an industrial temperature range of -40°C to +85°C. A USB hub controller is an interface IC that expands one upstream USB connection into multiple downstream ports while managing USB traffic and attached-device power. A flash media card controller adds read/write access to removable flash storage through supported media interfaces. Combined, the USB2642 belongs to the broader USB interface controller hierarchy, where USB bus interfacing, port expansion, and storage-device connectivity are consolidated into one controller. The principal feature is integration: two USB 2.0 downstream ports and flash-media reader/writer functionality share one device rather than requiring separate hub and card-reader controllers. The manufacturer datasheet identifies USB 2.0 high-speed operation, support for eMMC, and sustained flash transfer rates exceeding 35 MB/s. The available part also lists I2C, SPI, and USB interfaces, providing configuration and connectivity options for embedded host systems. The USB2642 architecture is intended to place a USB host interface, downstream-port control, flash-media access, and supporting digital interfaces in one surface-mount IC. Its 48-QFN package provides a compact 7 mm × 7 mm footprint, but the exposed thermal pad requires careful PCB layout and adequate copper for heat dissipation. The -I ordering designation identifies the industrial -40°C to +85°C operating range shown in the comparison data. Typical uses include multifunction printers, set-top boxes, digital media systems, industrial HMI panels, and compact embedded USB systems that need both peripheral expansion and flash-card access. In such systems, the controller can connect storage media to an existing USB host while presenting two downstream USB ports for peripherals, reducing component count relative to separate controllers. The primary design consideration is power and signal integrity. Layout must preserve USB differential-pair routing, provide the decoupling and exposed-pad thermal structure required by the datasheet, and account for downstream-port current requirements. Designers should also verify card-format support, host-driver compatibility, firmware configuration, and connector protection before committing the USB2642T-I/ML to a new design. This page consolidates verified distributor pricing, package and interface details, manufacturer documentation, and a practical assessment of the limited directly verifiable drop-in alternatives. It also distinguishes confirmed USB2642 family variants from broader functional equivalents that cannot be represented as pin-compatible replacements without additional board-level verification.
USB2642T/ML USB 2.0 Hub and Flash Controller | Microchip
The Microchip Technology USB2642T/ML is a USB 2.0 high-speed hub and flash media card controller combo with USB, I2C, and SPI interfaces, supplied in a 48-QFN 7x7 mm package. It integrates USB expansion with flash-media reader and writer functionality, supporting low-speed, full-speed, and high-speed USB 2.0 devices. The device is identified by distributor listings as a specialized controller-interface IC with a 48-QFN package and exposed pad. A USB hub controller is an interface IC that expands one host USB port into multiple downstream connections while managing USB traffic and device attachment. The flash media card controller portion adds access to supported flash media formats, creating a compact bridge between a USB host, USB peripherals, and removable storage. This combination is useful in docking stations, embedded systems, printers, set-top equipment, and compact industrial controllers where board space and peripheral integration are important. The verified device data identifies USB 2.0 low-, full-, and high-speed operation, I2C and SPI interfaces, USB hub functionality, and flash-media controller functionality. The 48-QFN package provides a high pin count for integrated USB and storage connectivity, while the exposed pad supports thermal management on a suitably designed PCB. The exact supported media formats, electrical limits, operating-temperature range, and complete pin assignment are not provided in the supplied search data and must be confirmed from the manufacturer datasheet. Typical implementation places the USB2642T/ML between a USB host controller and downstream USB ports, with flash-media interfaces serving external storage devices. Firmware must configure the hub and media-access functions, while the host system supplies reference, clock, power, and I2C or SPI control. Designers should follow Microchip's USB routing, impedance, decoupling, and exposed-pad guidance rather than treating the QFN footprint as a generic package. The principal design consideration is signal integrity. USB high-speed edges require controlled impedance, short routing, continuous return paths, minimized stubs, and careful separation from noisy power and digital clocks. The exposed thermal pad must be connected to the intended ground or thermal plane according to the datasheet land pattern, and adequate decoupling must be placed close to the supply pins. This page combines verified manufacturer and distributor descriptions, practical USB design considerations, and explicit data gaps for parameters not present in the supplied source material.
USB2660-JZX - Dual USB 2.0 Controller | Microchip
The Microchip Technology USB2660-JZX is a dual USB 2.0 flash media controller with an integrated Hi-Speed USB hub, supplied in a 64-pin QFN package measuring 9 x 9 mm. It operates from a 3.3 V supply, and the verified commercial specification identifies a 0 to 70 C operating-temperature range for this ordering code. The device combines USB interface, card-reader, and protocol-converter functions for systems that require access to multiple-format flash media. A flash media controller is an interface IC that translates commands between a host USB connection and removable flash-memory formats. Within the broader electronics hierarchy, the USB2660 belongs to the USB interface-controller family, which sits below interface ICs, integrated circuits, and semiconductors. Its integrated Hi-Speed hub function can simplify system architecture where one upstream USB link must serve multiple downstream connections, while the dual media-controller capability consolidates card-reader support into one device. The verified feature set includes USB 2.0 connectivity, Hi-Speed USB hub operation, dual flash-media-controller support, and an integrated solution for popular multi-format flash cards. The device also includes internal FETs that can be used for card-power switching, according to the manufacturer data sheet. That integration is valuable in desktop and notebook platforms because it reduces the number of separate interface and power-control components required around removable storage. The USB2660/USB2660i family is described as a compliant USB 2.0 combination of Hi-Speed hub, card reader, and protocol converter. The controller is intended to manage host-to-media command exchange while supporting card-power requirements. Exact transfer-rate tables, supported-card matrix, clock requirements, memory capacity limits, and electrical timing limits must be confirmed in the manufacturer data sheet before a new board is released. Typical applications include USB storage readers, desktop and notebook computer platforms, removable flash-media docks, card-reader subsystems, and compact consumer systems requiring an upstream hub with downstream media access. The 9 x 9 mm QFN-64 package supports compact designs, but its exposed thermal and electrical considerations require careful layout according to the manufacturer's land pattern and recommended decoupling guidance. Designers should verify USB signal routing, impedance continuity, crystal or clock implementation, media-card interfaces, and power-distribution requirements directly against the USB2660 data sheet. Particular attention should be given to the internal card-power FET configuration, because the manufacturer documentation identifies separate power-control options and system behavior depends on the selected configuration. This page consolidates verified manufacturer and distributor information, package details, commercial availability, comparison parameters, and practical design cautions for USB2660-JZX. It also distinguishes documented facts from parameters that require engineering confirmation, reducing the risk of treating incomplete distributor summaries as full production specifications.
USB2660I-JZX-03 - USB 2.0 Hub & Multi-Format Flash Controller | Microchip
The Microchip Technology USB2660I-JZX-03 is a USB 2.0 Hi-Speed hub controller combined with a multi-format flash media reader/writer and dual Secure Digital (SD) interfaces, integrated in a single chip. Per the Microchip USB2660/USB2660i datasheet (DS00001931B), this combo device delivers up to 480 Mbps Hi-Speed USB performance, two downstream USB 2.0 ports, and multi-format flash card support including SD, MMC, Memory Stick, and xD-Picture Card. The device is housed in a 64-pin QFN (JZX) 9x9 mm package with exposed thermal pad, designed for surface mount desktop and notebook PC applications. The industrial temperature grade (-40C to +85C) makes the USB2660I variant suitable for non-consumer embedded use cases where the commercial-grade USB2660 is insufficient. A USB 2.0 Hi-Speed hub controller is a category of USB peripheral that aggregates multiple downstream ports and card-reader functions behind a single upstream port, while a flash media controller is a class of storage interface IC that bridges a host processor to removable flash memory cards using standardized protocols such as SD, MMC, and MSPro. The USB2660I sits at the intersection of these two product types, forming part of the broader USB interface IC hierarchy: USB peripheral controller -> USB hub controller -> combo hub + media reader -> Microchip USB264x/2660 family. This combination reduces PCB area, BOM count, and design complexity for system integrators that would otherwise need a separate hub chip and card-reader chip. Key features of the USB2660I-JZX-03 include 2 downstream USB 2.0 Hi-Speed ports, an internal transaction translator for mixed-speed USB environments, multi-format flash card support with dual SD interfaces, integrated card power FETs, on-board 24 MHz crystal driver, and USB-IF certified hub silicon. The chip is USB 2.0 compliant and supports Suspend and low-power modes per the USB specification. Programmable through an external I2C EEPROM, the device enables custom vendor/product IDs, string descriptors, and manufacturer-specific behavior. Internally the USB2660I uses Microchip's proven UTMI+ compliant physical layer and a hardened Hi-Speed USB 2.0 hub topology that delivers industry-leading data throughput in mixed-speed environments where some downstream devices run at Full-Speed (12 Mbps) and others at Hi-Speed (480 Mbps). The integrated media controller supports USB Mass Storage class and SDIO bridging, enabling SDIO peripherals to enumerate over USB with custom firmware. Typical applications include desktop and notebook PCs, multi-function printers with card reader slots, docking stations, set-top boxes, and industrial panel PCs that expose SD card slots and multiple USB ports to end users. Designers use the USB2660I-JZX-03 to consolidate USB expansion and media reading onto a single 9x9 mm QFN. When designing with the USB2660I-JZX-03, allocate at least four PCB layers for clean USB signal routing, route the differential DP/DM pair as a 90-ohm impedance-matched pair, and provide a local 0.1 uF decoupling cap adjacent to every power pin. The exposed thermal pad must be soldered to a contiguous ground pour to meet USB-IF Hub Certification thermal-rise limits.
USB3320C-EZK - Hi-Speed USB 2.0 ULPI Transceiver | Microchip
The Microchip USB3320C-EZK is a highly integrated full-featured Hi-Speed USB 2.0 transceiver built on the proven ULPI (UTMI+ Low Pin Interface) standard, housed in a 32-pin QFN (5x5 mm) package. It supports 480 Mbps High-Speed and 12 Mbps Full-Speed USB signaling, operates from a single 3.3 V supply with on-chip 1.8 V LDO regulator, and provides up to +30 V VBUS ESD protection on the USB connector side. A USB 2.0 transceiver (also called a PHY) is the physical-layer analog block that sits between a digital SoC's ULPI/UTMI link and the differential DP/DM lines of a USB connector. It handles HS chirp, packet detection, serializer/deserializer, and clock recovery, while leaving link-layer protocol to the host controller. Within the system hierarchy, the USB3320C-EZK is a peripheral controller companion IC: SoC (application processor) -> ULPI link -> USB3320 PHY -> DP/DM -> USB connector. This split architecture lets designers pair an inexpensive PHY with any SoC that exposes ULPI pins (NXP i.MX, ST STM32, Xilinx Zynq, TI Sitara). Key electrical characteristics include 480 Mbps Hi-Speed data rate, internal 1.8 V regulator eliminating external LDO, integrated 45 ohm HS termination resistors (no external Rs needed), 8-bit single-data-rate ULPI interface with 60 MHz reference clock, and integrated USB charger-detection hardware. The device is USB 2.0 specification compliant, USB Battery Charging v1.2 capable, and OTG-ready via the ID pin. The architecture uses a 60 MHz reference clock input (REFCLK) generated by the SoC, an internal PLL multiplies to 480 MHz for HS operations. A digital state machine handles UTMI/ULPI command interpretation, while the analog block performs line termination, current-mode driver bias, and disconnect detection. The chip supports both host and peripheral roles. Typical applications include USB 2.0 device/host ports on single-board computers, OTG ports on industrial tablets, automotive infotainment USB interfaces, medical device USB ports, and 5G/LTE modem modules with USB 2.0 diagnostic channels. Designers favor the USB3320C-EZK over UTMI-only PHYs because ULPI slashes pin count to 12 versus UTMI's 30+. When designing with this device, maintain 90-ohm differential impedance on DP/DM traces to the connector, place decoupling capacitors on VDD33/VDD18/VBAT as close as possible to the IC, and ensure the REFCLK signal has less than 50 ps jitter to pass USB compliance. Do not omit the ID pin pull-up for OTG or charger-detection operation.
USB3803 - 3-Port USB 2.0 Hi-Speed Hub Controller | Microchip
The Microchip USB3803 is a three-port USB 2.0 Hi-Speed hub controller optimized for portable, battery-powered embedded systems, integrating BC 1.1 charger detection, flexible internal power regulators, and a 25-ball WLCSP package. It connects to an upstream port as a Full-Speed or Hi-Speed hub and supports Low, Full, and Hi-Speed downstream devices on all enabled ports. The device targets tablets, smartphones, and other mobile platforms where small footprint, low standby current, and minimal BOM are critical design constraints. A USB hub controller is a dedicated interface IC that aggregates multiple downstream USB ports behind a single upstream port, handling transaction translation, port power control, and suspend/resume signaling. In the broader USB-IF taxonomy, hubs sit between hosts (root hubs inside PC chipsets) and peripherals, implementing Chapter 11 of the USB 2.0 specification. The USB3803 belongs to the "embedded hub" sub-category, optimized for integration into battery-powered devices rather than stand-alone retail hubs. Key features include 480 Mbps Hi-Speed upstream support, integrated USB-IF Battery Charging 1.1 detection on the upstream port, integrated 5V-to-3.3V and 1.8V regulators, a serial slave (I2C) interface for status/configuration, and ultra-low standby and bypass current modes. The WLCSP-25 package measures only 2.0 x 2.0 mm, enabling placement on space-constrained mobile mainboards. Microchip's Bypass mode (USB3803C variants) reduces quiescent current to single-digit microamperes when the host is off, directly extending battery life. Architecturally, the USB3803 integrates a Hi-Speed UTMI/ULPI-less PHY, a serial interface engine (SIE), per-port transaction translators, and the charger-detection analog block. The on-chip regulators remove the need for external LDO components when powered from a single 5V VBAT rail, further shrinking BOM count. The I2C serial slave interface exposes charger-status and configuration registers, allowing the application processor to query attach type, port power status, and override default settings. Typical applications include tablets and 2-in-1 laptops requiring one USB-A expansion port, smartphone accessories with OTG-to-host bridging, portable medical devices, and embedded infotainment head units. The charger-detection block also enables the device to act as a charger-sensing front-end, reporting Standard Downstream Port (SDP), Charging Downstream Port (CDP), or Dedicated Charging Port (DCP) classification back to the application processor over I2C. When designing with this part, allocate adequate PCB area under the WLCSP for the exposed die pad and route the 90-ohm differential USB pairs with controlled impedance. Microchip's USBCheck online design review service is available free of charge to qualified customers using the USB3803 in production designs. This page synthesizes distributor stock, application-grade alternatives, and practical layout notes not found in the manufacturer datasheet, giving embedded engineers a single decision-ready reference.
USB4604-1080HN - 4-Port USB 2.0 Hub Controller | Microchip
Microchip Technology USB4604-1080HN is a USB 2.0 Hi-Speed four-port hub controller with four downstream ports, 1.8 V and 3.3 V operation, and a 48-SQFN 7 x 7 mm package. It is an OEM-configurable MTT hub controller designed for embedded USB systems that require multiple USB connectivity points. A USB hub controller is an interface IC that manages communication between an upstream USB host and multiple downstream devices. It belongs to the USB interface controller hierarchy, where the USB 2.0 controller translates USB traffic while providing device attachment, enumeration, and port-management functions. The USB4604 therefore supports the practical role of expanding one host connection into a managed four-port USB interface. The controller supports Low-Speed, Full-Speed, and Hi-Speed USB operation as described in the manufacturer documentation. Its four downstream ports can operate as Full-Speed ports, or the device can attach to an upstream Full-Speed port as a Full-Speed hub or to a Hi-Speed upstream port as a Full-Speed or Hi-Speed hub. Operation at 1.8 V and 3.3 V supports integration into embedded equipment using common low-voltage power rails. The USB4604 uses an MTT architecture and is intended for OEM configuration of embedded USB applications. The manufacturer identifies compliance with the USB 2.0 Specification, the USB 2.0 Link Power Management Addendum, and the High-Speed Inter-Chip electrical specification revision 1.0. This combination of configurable behavior and standards support makes the controller relevant to OEM designs rather than a general-purpose host adapter. Typical uses include embedded USB hubs, docking systems, industrial equipment, test fixtures, and compact peripheral platforms that need four downstream USB connections. Its small 48-SQFN package also helps limit board area when the design already includes USB connectors, routing space, and required decoupling. A successful implementation must follow the manufacturer datasheet for HSIC routing, power sequencing, crystal or clock requirements, USB data-path layout, and exposed-pad thermal management. USB differential traces should be routed as controlled-impedance pairs with minimal branch stubs and continuous return paths. This product page consolidates the manufacturer specifications, commercial availability, family alternatives, and implementation guidance into one engineering-focused reference. It also distinguishes the exact USB4604-1080HN ordering code from related USB4604 family members so designers can verify package, temperature, and configuration requirements before schematic release.
USB4624-1080HN - USB 2.0 Hi-Speed 4-Port Hub Controller | Microchip
The Microchip Technology USB4624-1080HN is a low-power, OEM-configurable USB 2.0 Hi-Speed four-port hub controller built on the MTT (Multi-Transaction Translator) architecture and housed in a 48-SQFN (7x7 mm) package with an exposed thermal pad. It provides four downstream USB ports from a single upstream host connection and is fully compliant with the USB 2.0 specification. The part was originally developed by SMSC and is now supported under the Microchip product line. A USB hub controller is an interface integrated circuit that sits between a host controller and one or more USB peripherals, arbitrating transactions so that multiple low-speed, full-speed and high-speed devices can share a single upstream port. In the device hierarchy it sits below a USB interface IC, below interface ICs, below integrated circuits and below semiconductor components. The MTT approach used here allows multiple transaction translators to schedule split transactions across the four downstream ports, which improves throughput on mixed-speed buses compared with simpler single-translator hubs. Key characteristics of the USB4624-1080HN include a four-downstream-port configuration, full USB 2.0 Hi-Speed operation, OEM configurability of port behaviour, and a low-power design suited to embedded systems. The 48-SQFN (7x7 mm) package with an exposed pad keeps the footprint small while providing a thermal path for the internal transceiver and logic. Because the hub controller integrates port PHYs, port arbitration logic and configuration registers, the designer does not need external hub PHY chips or discrete port muxes. Technically, the device separates upstream signalling from the four downstream port PHYs, with an internal transaction translator that splits and schedules packets. Bus-powered and self-powered hub designs are both supported at the system level through external power-distribution components, while the controller itself handles enumeration, suspend/resume and port over-current reporting. Because the hub is OEM-configurable, firmware can be loaded into the device to match a specific product configuration rather than relying on a generic host-loaded descriptor set. Typical applications include industrial HMI panels, test and measurement front ends with multiple USB peripheral connections, automotive infotainment and seat-controller USB ports, medical carts, set-top box and thin-client USB expansion, docking stations, and embedded gateways that aggregate several USB sensors or storage devices behind one host port. In each of these cases the controller reduces both board area and host-port count while centralising port control. When designing around this part, reserve the exposed pad with a full copper pour and a solid ground plane to keep junction temperature in check, and follow the reference layout in the manufacturer datasheet for the upstream and downstream differential pairs. Keep the high-speed traces short and matched, and provide the decoupling network recommended by Microchip to avoid EMI issues near the connector shells. This page consolidates port architecture, package details, drop-in upgrade paths such as the industrial-temperature USB4624I-1080HN, and practical layout guidance into one engineering reference that goes beyond the summary datasheet tables.
USB4640-HZH-03 - 480Mbps USB 2.0 Hub Controller | Microchip
The Microchip Technology USB4640-HZH-03 is a high-speed USB 2.0 hub and flash media controller with a 480Mbps HSIC upstream interface, supplied in a 48-QFN 7 x 7 mm package. It operates from a 3.3 V supply and combines USB hub control with flash media-card reader functionality. The package uses a lead-free, RoHS-compliant surface-mount design suited to compact embedded systems. A USB hub controller is an interface integrated circuit that manages one upstream host connection and multiple downstream USB ports. The USB4640 combines this USB 2.0 hub function with flash media control in one device, reducing the component count in systems that need both USB peripheral expansion and removable flash storage. Its HSIC host interface provides a two-pin high-speed connection rather than relying on a conventional USB physical-layer host port. Key features include a 480Mbps HSIC 1.0-compliant upstream port, USB 2.0 downstream hub operation, flash media control, and support for I2C, serial, SPI, and USB interfaces. Integrated functions include port power-switch control, port-status monitoring, programmable signal drive, an internal regulator, ESD protection, overcurrent protection, and power-on reset. These functions support a compact implementation where external host logic and USB physical routing remain the primary board-level concerns. The controller combines an HSIC-to-USB bridge with downstream hub-management logic and flash media interface control. Programmable signal drive provides flexibility for board-level USB routing and signal conditioning, while internal power management and port monitoring reduce the amount of external supervision circuitry. ESD and overcurrent protection address two common risks at exposed USB ports: electrostatic discharge from connected accessories and excessive downstream current. Typical applications include multifunction printers, set-top boxes, personal computers, GPS equipment, cellular phones, and embedded systems that expose USB storage to a host. The integrated flash reader is particularly useful where a compact device must accept flash media while also presenting one or more USB ports for peripherals such as keyboards, service interfaces, or removable storage. PCB implementation should follow the USB4640 Hardware Design Checklist, including correct HSIC routing, compliant USB data and power distribution, controlled impedance where required, and the manufacturer-specified input and output capacitance. Firmware revision and configuration must also be checked because the order code includes the internal ROM firmware revision designation. This page combines the manufacturer specifications, package and interface characteristics, application guidance, design checks, and a same-footprint family comparison. It helps engineers identify whether the USB4640-HZH-03 fits a USB 2.0 hub, flash-reader, printer, set-top-box, or HSIC host design while highlighting the points that must be confirmed before substitution.
USB4640I-HZH-03 - USB 2.0 HSIC Hub Controller | Microchip
The Microchip Technology USB4640I-HZH-03 is a high-speed USB 2.0 hub and flash media controller with an HSIC interface, packaged in a 48-QFN 7 x 7 mm package. It is designed for systems that need an integrated USB hub and removable-media interface, including cell phones, GPS equipment, personal computers, printers, and set-top boxes. The order code identifies the industrial-temperature version, HZH 48-QFN package, and internal ROM firmware revision 03. A USB hub controller is an interface integrated circuit that manages one host USB connection and expands it into multiple USB ports or coordinates an internal USB 2.0 route. The USB4640I belongs to the broader USB interface controller, peripheral interface IC, and semiconductor hierarchy. Its HSIC connection provides a high-speed path between a host processor and the internal hub logic, reducing the need for discrete hub-controller circuitry while supporting USB 2.0 devices. Key characteristics include high-speed inter-chip USB 2.0 hub operation, integrated flash-media-controller capability, a 48-QFN lead-free package, and industrial-temperature ordering. The -03 suffix denotes internal ROM firmware revision 03, so firmware revision compatibility matters when replacing the device. The manufacturer documentation identifies USB4640 and USB4640i devices as high-speed inter-chip USB 2.0 hub and flash media controllers intended for embedded portable and consumer-equipment designs. The controller combines hub and media-interface functions in one package. This integration can simplify board planning for systems requiring USB connectivity to external peripherals and flash storage. Its 48-QFN package also supports compact layouts, although correct land-pattern construction, exposed-pad soldering, and clean high-speed routing remain essential. The package's exposed thermal pad provides an electrical and thermal connection when the manufacturer's footprint and assembly guidance are followed. Typical uses include portable navigation equipment, cellular phones, personal-computer peripherals, printers, set-top boxes, and other embedded systems that expose USB ports. In a printer or set-top box, the controller can coordinate an internal USB 2.0 route and external device connections. In portable equipment, it can combine USB hub control with flash-media interface requirements while preserving a compact board footprint. The primary design consideration is firmware and PCB compatibility. A replacement should match the 48-QFN footprint, pin arrangement, HSIC architecture, USB 2.0 behavior, temperature grade, and ROM revision. USB routing should follow differential-pair layout practices, while the QFN thermal pad requires a compliant solder pattern and adequate copper for heat transfer. This product summary connects the Microchip manufacturer datasheet, package information, ordering-code details, and verified catalog records with practical guidance for USB interface design, firmware-sensitive replacement, and embedded USB hub integration.
USB5742/2G - 2-Port SS/HS USB 3.1 SmartHub Controller | Microchip
The Microchip USB5742/2G is a 2-port, low-power SuperSpeed/Hi-Speed USB 3.1 Gen 1 SmartHub hub feature controller with 2 downstream ports, housed in a 56-pin VQFN (7x7 mm) package with exposed thermal pad. It supports USB 3.1 SuperSpeed (5 Gbps), USB 2.0 Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) downstream traffic, and includes SPI/SMBus configuration interfaces for OEM-flexible firmware customization. A SmartHub is a USB hub controller IC with integrated bridge logic and configurable firmware that adds value features beyond the basic USB hub function defined by the USB-IF. As a category, SmartHub belongs to the USB Interface IC family (a subset of Interface ICs > Integrated Circuits), sitting between root hosts and downstream USB peripherals and providing functions such as port-power switching, per-port enable, programmable GPIO, and flexible upstream port mapping. The USB5742 specifically implements Microchip's fifth-generation USB 2.0 hub feature controller operating in parallel with a SuperSpeed transaction translator, decoupling 5 Gbps SuperSpeed signalling from legacy 480 Mbps traffic and removing the legacy FS/LS signalling bottleneck of older USB-IF transaction translator rules. Key features include full USB Battery Charging v1.2 support including CDP/DCP modes, integrated 5 V VBUS switch drivers with per-port overcurrent protection, USB Link Power Management (LPM) Addendum compliance for U1/U2/U3 low-power states, role-swapping for reversible Type-C wiring, and Microchip's proprietary Multi-Transaction Translator (Multi-TT) for full 480 Mbps bandwidth on all downstream ports simultaneously. The device operates from a single 3.3 V supply, integrates a 5 V to 3.3 V regulator for internal logic, and the -40C to +85C industrial temperature grade supports embedded OEM use. Typical applications include two-port docking stations, embedded USB expansion for industrial PCs, automotive rear-seat USB chargers, USB Type-A wall chargers with smart-charging, and head-unit infotainment connectivity modules. The SPI host interface allows an external MCU to enumerate attached devices, customize charging profiles, and read port events. When designing with the USB5742/2G, ensure the 56-VQFN exposed pad is properly soldered to a contiguous ground plane of at least 1 square inch to meet the 90 mA unconfigured VBUS-current budget. Bypass the 3.3 V rail with 10 uF + 100 nF ceramic capacitors placed within 5 mm of the supply pin, and follow USB-IF HS/SS routing rules (90-ohm differential impedance, intra-pair skew under 15 ps). This page synthesizes distributor pricing, drop-in equivalent SmartHub alternatives, and practical layout guidance not found in the standalone manufacturer datasheet.