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USB2250-NU-06 - USB 2.0 Flash Controller | Microchip
USB2250-NU-06

USB2250-NU-06 - USB 2.0 Flash Controller | Microchip

The Microchip Technology USB2250-NU-06 is a USB 2.0 flash media card controller operating at 35 Mbit/s with a 3.3 V supply, housed in a 128-pin VTQFP package measuring 14 mm by 14 mm. It provides the interface between a USB host and compatible flash media cards, combining USB device connectivity with dedicated media-card control logic. A USB flash media card controller is an interface IC within the broader USB controller and storage-interface ecosystem. Its role is to translate commands and data between a USB host and removable flash media while coordinating protocol handling, card interfacing, and host connectivity. The USB2250 belongs to Microchip’s USB225x family, which targets high-speed USB 2.0 flash-media applications requiring a dedicated controller rather than a general-purpose host or peripheral controller. The verified product data identifies the USB2250-NU-06 as a USB 2.0 interface controller with a maximum host data-transfer rate of 35 Mbit/s. It operates from a 3.3 V supply and supports the Ultra-Fast USB 2.0 flash-media controller role. Its 128-pin VTQFP package provides the interface and support circuitry required for a multi-contact memory-card implementation, although individual pin functions were not included in the supplied excerpts. The 35 Mbit/s interface rate corresponds to full-speed USB 2.0 operation and is substantially faster than a low-speed USB connection. This makes the controller relevant to products that need a dedicated bridge between a USB host and flash media, including card readers, portable storage equipment, industrial data-collection equipment, and embedded storage systems. The controlled operating supply of 3.3 V also supports integration into modern embedded systems that operate from a 3.3 V power domain. The package is the principal implementation constraint for engineers evaluating this controller. A 128-pin VTQFP with a 14 mm by 14 mm body and 0.40 mm pitch requires a multilayer PCB and fine-pitch assembly capability. The larger lead count and exposed routing demands are considerably more substantial than those of a compact USB interface controller, but they provide the connections needed for a full flash-media controller implementation. When designing a PCB around the USB2250-NU-06, verify the exact pin configuration, recommended power and decoupling networks, clock requirements, media-card interface details, and layout guidance in the manufacturer datasheet before release. Because the supplied web excerpts do not provide a verified pin table, stack-up recommendation, impedance value, or thermal-resistance figure, those details should not be inferred from the package alone. This product page consolidates verified distributor and manufacturer information, distinguishes same-family alternatives, and adds practical selection and PCB-design guidance. It also highlights where engineering teams must consult the complete USB2250/USB2251 datasheet for pin-level, electrical, and layout requirements that cannot be substantiated by the supplied search records.

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USB2250I-NU-06 - USB 2.0 Flash Media Controller | Microchip
USB2250I-NU-06

USB2250I-NU-06 - USB 2.0 Flash Media Controller | Microchip

The Microchip Technology USB2250I-NU-06 is an industrial-grade USB 2.0 flash media controller for reading and writing more than 24 flash-media formats, with sustained transfer rates exceeding 35 MB/s when the media and host support that performance. The device is housed in a 128-pin VTQFP package measuring 14 x 14 mm and interfaces between a USB host and removable flash-media storage. A USB flash media controller is an interface IC that translates USB mass-storage commands into the electrical signaling required by CompactFlash, SmartMedia, xD-Picture Card, Memory Stick, Secure Digital, and MultiMediaCard devices. Within the product hierarchy, this controller belongs to the USB interface controller family, the larger interface IC category, and ultimately the integrated-circuit and semiconductor classifications used for embedded data-transfer systems. The controller supports more than 24 popular flash-media formats and is designed for applications using single or combination media sockets. Multiple simultaneous card insertions can be handled, while the number of logical units and their assignment to card types remain flexible. These capabilities make the device useful for industrial media readers, portable diagnostic equipment, data acquisition systems, and specialized card-access appliances. The USB 2.0 Hi-Speed interface supports an average sustained transfer rate exceeding 35 MB/s when both the attached media and host controller can sustain the required throughput. Actual performance depends on the media device, electrical implementation, host software, and workload. The integrated design reduces the need for a separate USB-to-flash bridge while providing a common interface across numerous legacy and removable flash-memory formats. Typical implementations include CompactFlash readers, multi-slot memory-card stations, industrial data loggers, test and measurement equipment, and embedded systems that must exchange files through removable media. The industrial-grade positioning is relevant where equipment must tolerate extended operating conditions beyond typical consumer environments, although design engineers should verify the exact temperature limits and qualification requirements against the manufacturer datasheet. PCB implementation requires careful attention to USB signal routing, flash-media interface layout, power integrity, and exposed-pad thermal management. Place the USB transceiver path away from switching nodes and analog-sensitive circuitry, route differential USB traces as a matched pair, and provide the decoupling network specified by the manufacturer near the appropriate supply pins. Use the package land pattern and pin-description tables in the manufacturer datasheet when assigning tracks and assembling the board. This product page combines manufacturer-family information, verified distributor identification, package details, application analysis, design guidance, and a parameter-by-parameter comparison of supported same-package family alternatives. It is designed to help engineers confirm controller fit, package compatibility, media coverage, thermal planning, and sourcing requirements before committing a USB flash-media interface to a PCB layout.

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USB2251-NU-06 - USB 2.0 Flash Media Controller | Microchip
USB2251-NU-06

USB2251-NU-06 - USB 2.0 Flash Media Controller | Microchip

Microchip Technology USB2251-NU-06 is a Hi-Speed USB 2.0 flash media card controller with a 24 MHz maximum clock frequency and a maximum data transfer rate of 35 Mbps, housed in a 128-terminal VTQFP package measuring 14 x 14 mm. It is designed to provide an interface between a USB host controller and flash media cards. A USB flash media card controller is a specialized interface IC that translates host-side USB traffic into commands understood by flash-memory media. Within the broader hierarchy, it is a USB interface controller, an interface IC, an integrated circuit, and a semiconductor designed for removable or embedded flash-storage applications. The USB2251 family supports Hi-Speed USB 2.0 operation and broad media-card interoperability for devices requiring direct access to flash storage. The key features include USB 2.0 compatibility, a 24 MHz maximum operating clock, a 35 Mbps maximum data-transfer rate, I2C bus compatibility, and a 128-terminal surface-mount package. The 14 x 14 mm VTQFP format provides 128 electrical connections, allowing the controller to expose multiple media interfaces, control signals, data buses, and power-management connections. A tray package is listed by the distributor data for this ordering code. Technically, the USB2251 belongs to Microchip's USB225x controller family, which is designed around a high-speed USB 2.0 host interface and flash-media-card control functions. Its 35 Mbps maximum transfer rate is materially faster than the 12 Mbps ceiling associated with Full-Speed USB operation, making it suitable for flash-media devices where transfer latency affects data synchronization, file copying, and application startup. The controller operates from a 3.3 V supply according to the distributor product listing. Typical uses include USB flash-memory readers, portable storage devices, embedded storage systems, digital media equipment, and host systems that need a dedicated USB-to-flash bridge. In a card-reader implementation, the controller handles USB enumeration and transaction exchange with the host while transferring data to compatible flash media through the device's card-interface signals. The I2C-compatible interface can support configuration or management functions where the host or system controller requires them. Designers should verify the complete 128-pin signal map, configuration options, voltage levels, clock requirements, and media-support matrix in the manufacturer datasheet before PCB release. Because no verified 128-terminal pin table was supplied, this page does not infer pin names or numbering. USB routing also requires careful controlled-impedance layout, short high-speed traces, solid reference planes, and compliant power distribution to avoid signal-integrity and EMC issues. This page consolidates the verified manufacturer description, distributor package data, operating highlights, ordering information, and traceable web sources. It also distinguishes verified drop-in-family candidates from functional equivalents that would require a different footprint, helping engineers compare sourcing options without mistaking a merely similar USB storage controller for a pin-compatible replacement.

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USB2251I-NU-06 - USB 2.0 Flash Media Controller | Microchip
USB2251I-NU-06

USB2251I-NU-06 - USB 2.0 Flash Media Controller | Microchip

The Microchip Technology USB2251I-NU-06 is a specialized USB 2.0 flash media card controller designed to interface supported flash-memory formats with a USB host controller. It supports Hi-Speed USB 2.0 operation and is packaged as a 128-pin VTQFP measuring 14 x 14 mm. The controller is intended for embedded USB mass-storage equipment requiring a dedicated interface to flash media rather than a general-purpose storage controller. A flash media controller is an interface IC within the broader hierarchy of USB interface controllers, storage controllers, and semiconductor components. It manages the electrical and protocol-level connection between a USB host and a removable or embedded flash-memory card. The USB2251 family targets readers and storage appliances using SmartMedia/xD-Picture Card, Memory Stick, MultiMediaCard, Secure Digital, Compact Flash, and related flash-media formats. Key features include USB 2.0 Hi-Speed operation, support for multiple legacy flash-card standards, and a compact 128-pin VTQFP package. The 14 x 14 mm package provides a high pin count for card detection, power-control, data-bus, command, and configuration connections. This makes USB2251I-NU-06 suitable for multifunction readers, portable storage products, industrial data terminals, and embedded systems that must bridge a USB host to physically distinct flash-card interfaces. Technically, the device belongs to the USB225x family of flash media card controllers. Its architecture separates USB host connectivity from the media-card interface, allowing firmware to identify inserted media and expose supported cards through a USB mass-storage function. The product is identified as the industrial-temperature version of USB2251, although exact electrical limits should be confirmed in the manufacturer datasheet before final qualification. Typical applications include USB flash-card readers, multifunction office devices, portable media players, data-acquisition terminals, and industrial control panels. In each case, the controller reduces the need for a host processor to implement card-specific electrical protocols. System designers must still provide correct card connectors, signal conditioning, storage media support, firmware, and validated host-driver behavior. A primary design consideration is the relatively complex pin and power-management architecture. Route high-speed USB signals as a controlled impedance path, place decoupling close to the supply pins, and follow the pin-description and configuration tables in the manufacturer datasheet. Media-format support must also be verified against the target product requirements because legacy card interfaces are not interchangeable at the connector or firmware level. This product page combines the exact Microchip ordering information, verified package and interface details, supported flash-media functions, drop-in family options, and practical integration guidance. It is intended to help engineers determine whether the USB2251I-NU-06 matches their USB 2.0 card-reader architecture before schematic capture and PCB layout begin.

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USB2412-DZK - 2-Port USB 2.0 Hub Controller | Microchip
USB2412-DZK

USB2412-DZK - 2-Port USB 2.0 Hub Controller | Microchip

The Microchip USB2412-DZK is a low-power, two-port USB 2.0 hub controller IC using a single Transaction Translator architecture, with a 3 V to 3.6 V supply range and support for low-speed, full-speed, and high-speed downstream devices in a 28-QFN package. It is designed for embedded USB hub applications requiring two downstream ports and USB 2.0 Hi-Speed operation. A USB hub controller is an interface IC that manages traffic between one upstream USB host connection and multiple downstream USB ports. The USB2412 belongs to the USB interface-controller hierarchy, where USB 2.0 connectivity, transaction translation, port management, and embedded system integration combine into a dedicated hub solution. Its single Transaction Translator, or STT, architecture is intended to reduce implementation complexity in compact USB hub designs. The verified product information identifies two downstream ports, USB 2.0 operation, low-power operation, and support for low-speed, full-speed, and high-speed downstream devices when the hub operates at high speed. The controller is available in a 28-QFN package, while distributor records identify the package as 28-VFQFN with an exposed pad. The USB interface supports system integration with embedded USB host, peripheral, docking, and industrial equipment designs. The 3 V to 3.6 V operating supply range places the device in a low-voltage digital interface class. USB data integrity depends on correct PCB routing, adequate power distribution, compliant connector implementation, and proper decoupling. The exposed-pad package requires attention to thermal and layout practices, even though the verified snippets do not provide a complete electrical limit table or detailed power-consumption values. Typical applications include two-port embedded USB hubs, self-powered USB equipment, industrial control systems, test and measurement fixtures, docking equipment, and compact host systems that need USB device expansion. The two-port architecture is useful when a system must connect peripherals without adding multiple independent host controllers. When selecting a replacement, verify the complete pinout, package dimensions, exposed-pad connection, USB signal routing, clock requirements, and power sequencing against the original design. The USB2412-DZK-TR is a tape-and-reel ordering variant, while other listed controllers or transceivers may provide different functions and must not be treated as drop-in substitutes without manufacturer verification. This page consolidates the verified manufacturer description, distributor package data, official datasheet link, application guidance, and cross-reference findings to support engineering selection. It distinguishes confirmed USB2412 attributes from parameters that require the manufacturer datasheet or an authorized design review.

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USB2412-DZK-TR - 2-Port USB 2.0 Hub Controller | Microchip (Tape & Reel)
USB2412-DZK-TR

USB2412-DZK-TR - 2-Port USB 2.0 Hub Controller | Microchip (Tape & Reel)

The Microchip USB2412-DZK-TR is a low-power, two-port USB 2.0 hub controller IC using a single Transaction Translator architecture, with a 3 V to 3.6 V supply range and support for low-speed, full-speed, and high-speed downstream devices in a 28-QFN package. It is designed for embedded USB hub applications requiring two downstream ports and USB 2.0 Hi-Speed operation. A USB hub controller is an interface IC that manages traffic between one upstream USB host connection and multiple downstream USB ports. The USB2412 belongs to the USB interface-controller hierarchy, where USB 2.0 connectivity, transaction translation, port management, and embedded system integration combine into a dedicated hub solution. Its single Transaction Translator, or STT, architecture is intended to reduce implementation complexity in compact USB hub designs. The verified product information identifies two downstream ports, USB 2.0 operation, low-power operation, and support for low-speed, full-speed, and high-speed downstream devices when the hub operates at high speed. The controller is available in a 28-QFN package, while distributor records identify the package as 28-VFQFN with an exposed pad. The USB interface supports system integration with embedded USB host, peripheral, docking, and industrial equipment designs. The 3 V to 3.6 V operating supply range places the device in a low-voltage digital interface class. USB data integrity depends on correct PCB routing, adequate power distribution, compliant connector implementation, and proper decoupling. The exposed-pad package requires attention to thermal and layout practices, even though the verified snippets do not provide a complete electrical limit table or detailed power-consumption values. Typical applications include two-port embedded USB hubs, self-powered USB equipment, industrial control systems, test and measurement fixtures, docking equipment, and compact host systems that need USB device expansion. The two-port architecture is useful when a system must connect peripherals without adding multiple independent host controllers. When selecting a replacement, verify the complete pinout, package dimensions, exposed-pad connection, USB signal routing, clock requirements, and power sequencing against the original design. The USB2412-DZK-TR-TR is a tape-and-reel ordering variant, while other listed controllers or transceivers may provide different functions and must not be treated as drop-in substitutes without manufacturer verification. This page consolidates the verified manufacturer description, distributor package data, official datasheet link, application guidance, and cross-reference findings to support engineering selection. It distinguishes confirmed USB2412 attributes from parameters that require the manufacturer datasheet or an authorized design review.

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USB2422-CP - Low-Power 2-Port USB 2.0 Hub Controller | Microchip Technology
USB2422-CP

USB2422-CP - Low-Power 2-Port USB 2.0 Hub Controller | Microchip Technology

The Microchip Technology USB2422-CP is a low-power, single-transaction-translator USB 2.0 hub controller with two downstream ports, packaged in a 24-QFN (4x4 mm) package. It supports an upstream Hi-Speed and Full-Speed hub connection or a Full-Speed-only configuration, while downstream devices can operate at Low-Speed, Full-Speed, or Hi-Speed when configured as a Hi-Speed hub. The controller is designed for embedded USB expansion systems requiring compact bus routing and USB 2.0 compatibility. Its two-port architecture integrates downstream-port USB connectivity into one controller rather than requiring separate hub devices. A USB hub controller is an interface IC within the broader USB interface-controller and semiconductor hierarchy. In an embedded system, the upstream port connects the hub to a host controller, while each downstream port connects external peripherals such as storage, keyboards, communications modules, or service interfaces. USB2422-CP acts as the transaction translator and hub-management element between those connections, helping the host system organize USB traffic across two ports. Its support for Full-Speed and Hi-Speed operation makes it relevant to legacy USB 2.0 embedded designs rather than modern USB 3.x or USB4 systems. The principal verified feature set includes a 2-port USB 2.0 hub configuration, single transaction translator operation, upstream Hi-Speed and Full-Speed attachment capability, and downstream Low-Speed, Full-Speed, and Hi-Speed support. Microchip describes the device as low power, which is valuable in embedded equipment where USB expansion must not dominate the system power budget. The 24-QFN package provides a compact surface-mount footprint, but its exposed thermal and electrical requirements must be handled according to the manufacturer datasheet. The controller is positioned between a USB host and downstream USB peripherals. When configured as a Hi-Speed hub, the upstream link and compatible downstream links can use USB 2.0 Hi-Speed operation; when used as a Full-Speed-only hub, the design avoids requiring Hi-Speed operation. Device attachment, removal, enumeration, and power-management behavior must be evaluated against the USB host software and the electrical requirements of the connected peripherals. The verified web data does not provide current unit pricing, stock status, lead time, detailed pin names, or all electrical timing and current limits, so those values are not inferred here. Typical applications include embedded instrumentation, industrial control panels, compact USB expansion boards, peripheral consolidation, and USB connectivity in systems that already use a USB 2.0 host controller. A hub may be useful when a processor exposes one host port but the enclosure requires two external connections. The design should verify connector protection, power switching, cable length, chassis grounding, and host compatibility. The manufacturer datasheet is the authoritative source for pin assignments, electrical limits, configuration registers, and implementation details. Use the USB2422-CP when the existing PCB is designed around its 24-QFN footprint and the application needs a compact two-port USB 2.0 hub controller. Confirm package pin compatibility, operating conditions, and USB host requirements before treating any substitute as a drop-in replacement. This page combines verified manufacturer descriptions, distributor package information, datasheet references, application context, and procurement guidance. It distinguishes documented facts from missing parameters and avoids inventing prices, pin assignments, electrical limits, or replacement parts.

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USB2422-CP-TR - Low-Power 2-Port USB 2.0 Hub Controller | Microchip Technology (Tape & Reel)
USB2422-CP-TR

USB2422-CP-TR - Low-Power 2-Port USB 2.0 Hub Controller | Microchip Technology (Tape & Reel)

The Microchip Technology USB2422-CP-TR is a low-power, single-transaction-translator USB 2.0 hub controller with two downstream ports, packaged in a 24-QFN (4x4 mm) package. It supports an upstream Hi-Speed and Full-Speed hub connection or a Full-Speed-only configuration, while downstream devices can operate at Low-Speed, Full-Speed, or Hi-Speed when configured as a Hi-Speed hub. The controller is designed for embedded USB expansion systems requiring compact bus routing and USB 2.0 compatibility. Its two-port architecture integrates downstream-port USB connectivity into one controller rather than requiring separate hub devices. A USB hub controller is an interface IC within the broader USB interface-controller and semiconductor hierarchy. In an embedded system, the upstream port connects the hub to a host controller, while each downstream port connects external peripherals such as storage, keyboards, communications modules, or service interfaces. USB2422-CP-TR acts as the transaction translator and hub-management element between those connections, helping the host system organize USB traffic across two ports. Its support for Full-Speed and Hi-Speed operation makes it relevant to legacy USB 2.0 embedded designs rather than modern USB 3.x or USB4 systems. The principal verified feature set includes a 2-port USB 2.0 hub configuration, single transaction translator operation, upstream Hi-Speed and Full-Speed attachment capability, and downstream Low-Speed, Full-Speed, and Hi-Speed support. Microchip describes the device as low power, which is valuable in embedded equipment where USB expansion must not dominate the system power budget. The 24-QFN package provides a compact surface-mount footprint, but its exposed thermal and electrical requirements must be handled according to the manufacturer datasheet. The controller is positioned between a USB host and downstream USB peripherals. When configured as a Hi-Speed hub, the upstream link and compatible downstream links can use USB 2.0 Hi-Speed operation; when used as a Full-Speed-only hub, the design avoids requiring Hi-Speed operation. Device attachment, removal, enumeration, and power-management behavior must be evaluated against the USB host software and the electrical requirements of the connected peripherals. The verified web data does not provide current unit pricing, stock status, lead time, detailed pin names, or all electrical timing and current limits, so those values are not inferred here. Typical applications include embedded instrumentation, industrial control panels, compact USB expansion boards, peripheral consolidation, and USB connectivity in systems that already use a USB 2.0 host controller. A hub may be useful when a processor exposes one host port but the enclosure requires two external connections. The design should verify connector protection, power switching, cable length, chassis grounding, and host compatibility. The manufacturer datasheet is the authoritative source for pin assignments, electrical limits, configuration registers, and implementation details. Use the USB2422-CP-TR when the existing PCB is designed around its 24-QFN footprint and the application needs a compact two-port USB 2.0 hub controller. Confirm package pin compatibility, operating conditions, and USB host requirements before treating any substitute as a drop-in replacement. This page combines verified manufacturer descriptions, distributor package information, datasheet references, application context, and procurement guidance. It distinguishes documented facts from missing parameters and avoids inventing prices, pin assignments, electrical limits, or replacement parts.

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USB2422-I/MJ - 2-Port USB 2.0 Hub Controller | Microchip
USB2422-I/MJ

USB2422-I/MJ - 2-Port USB 2.0 Hub Controller | Microchip

The Microchip Technology USB2422-I/MJ is a low-power, single-transaction-translator USB 2.0 hub controller with two downstream ports, 3.3 V operation, and a 24-QFN 4x4 mm package. It supports Low-Speed, Full-Speed, and Hi-Speed downstream devices when configured as a Hi-Speed hub, while the upstream connection can operate as a Hi-Speed and Full-Speed hub or as a Full-Speed-only hub. A USB hub controller is an interface IC that manages one upstream USB connection and multiple downstream USB ports. Within the broader hierarchy of USB interface controllers, the USB2422 combines port routing, power-switch control, overcurrent protection, internal voltage regulation, and USB signal conditioning in one compact device for embedded systems. The part includes BC1.1 protocol support, downstream port power-switch control, overcurrent protection, an internal regulator, and ESD protection. Required USB port resistors are integrated, including D+ and D- series-termination resistors and the specified pull-down or pull-up resistors. Internal pull-ups are also provided for downstream overcurrent-sense inputs, reducing external component count. Its single-translation-translator architecture serves embedded USB applications in which low power, compactness, and upstream-device integration matter more than independent simultaneous translation on every downstream port. The device can therefore support compact host ports in equipment that otherwise lacks native USB hub routing. Typical uses include industrial control panels, medical equipment, printers, embedded test systems, set-top boxes, and other USB 2.0 equipment requiring two downstream connections. Applications should account for the hub's single-translator architecture and verify downstream-device compatibility before final system release. PCB implementation should preserve the manufacturer's recommended USB trace geometry, place decoupling and support components near their associated pins, and route differential D+ and D- paths as a matched pair. USB signal integrity depends on controlled impedance, minimized stubs, and uninterrupted return-path continuity across the connector, controller, and protection circuitry.

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USB2422/MJ - 2-Port USB 2.0 Hub Controller | Microchip
USB2422/MJ

USB2422/MJ - 2-Port USB 2.0 Hub Controller | Microchip

The Microchip Technology USB2422/MJ is a low-power, single-transaction-translator, two-port USB 2.0 hub controller for embedded USB solutions. It supports one upstream port and two downstream ports in a 24-QFN package measuring 4 mm by 4 mm. The controller can operate as a Hi-Speed and Full-Speed hub or as a Full-Speed-only hub, while downstream devices may use Low-Speed, Full-Speed, or Hi-Speed when the hub is configured for Hi-Speed operation. A USB hub controller is an interface integrated circuit that manages traffic between one upstream USB host connection and multiple downstream ports. Within the USB interface hierarchy, it belongs to the class of USB controllers and hub-controller devices used to expand USB connectivity in embedded systems. Unlike a host-controller interface that directly manages a host bus, the USB2422/MJ translates USB traffic for attached downstream devices and centralizes hub functions. The verified product information identifies the USB2422 as a two-port USB 2.0 Hi-Speed hub controller. Microchip states that all required USB-port resistors are integrated, including the series termination resistors and the required pull-down and pull-up resistors on D+ and D- pins. The downstream-port over-current sense inputs also have internal pull-up resistors. These integrated functions can reduce external discrete-component count while simplifying PCB layout. The single-translation architecture is a key engineering distinction. It uses one transaction translator for the two downstream ports rather than assigning an independent translator to every port. This can be suitable for embedded USB expansion where the application does not require maximum simultaneous transaction concurrency. By contrast, Microchip identifies USB2512B as a Multiple Transaction Translator design for applications needing more performance or parallel downstream-port operation. Typical uses include embedded instrumentation, industrial control equipment, printers, test systems, set-top equipment, and other USB-enabled products that need two downstream connections from one embedded host interface. The exact upstream and downstream interface rates, electrical limits, pin names, clock requirements, and operating-temperature details must be confirmed in the manufacturer datasheet before layout or firmware development. For robust implementation, follow the USB2422 Hardware Design Checklist and preserve the required USB routing, termination, bypass, and grounding practices. The 24-QFN footprint also demands careful thermal-pad assembly and adequate exposed-pad copper. Because the supplied distributor snippets do not provide a complete pinout, this record avoids inventing pin assignments and marks missing technical values explicitly where required. This page consolidates the verified Microchip product description, distributor listings, datasheet links, and hardware-design references. It also distinguishes a true package-compatible replacement from merely similar USB hub controllers, which is essential because USB hubs may differ in translator architecture, pinout, package, clocking, and host-interface requirements.

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USB2422I-CP - 2-Port USB 2.0 Hub Controller | Microchip
USB2422I-CP

USB2422I-CP - 2-Port USB 2.0 Hub Controller | Microchip

The Microchip Technology USB2422I-CP is a low-power, 2-port USB 2.0 hub controller designed for embedded USB connectivity. The device supports USB full-speed and high-speed operation and uses a single-transaction-translator architecture to connect one upstream USB host interface to two downstream ports. It is supplied in a 24-QFN, 4 x 4 mm surface-mount package identified by the USB2422I-CP ordering code. A USB hub controller is an interface IC within the broader semiconductor hierarchy of USB interface controllers, interface ICs, and integrated circuits. Its primary function is to manage traffic between an upstream USB host and multiple downstream USB devices. By centralizing port management, enumeration, power-gating, and transaction translation in one controller, an embedded product can expose more USB connectivity than its host processor or system controller would otherwise support. Microchip identifies the USB2422 as a low-power, single-transaction-translator, 2-port USB 2.0 hub controller intended for embedded USB solutions. The verified manufacturer material confirms support for both full-speed and high-speed USB 2.0 connections. The 24-QFN package keeps the implementation compact for embedded equipment while providing the electrical and thermal characteristics documented in the manufacturer datasheet. The USB2422 family also provides an SMBus-capable configuration interface, enabling host software or an external controller to configure hub behavior. According to the manufacturer datasheet, the hub conforms to voltage, power, and timing requirements in the SMBus 1.0 Specification 2 for slave-only devices, subject to the exceptions stated in the datasheet. This makes the controller relevant to designs that require configurable USB topology alongside conventional embedded control functions. Typical uses include industrial HMIs, USB-to-serial equipment, test and measurement systems, embedded computers, printers, and network appliances requiring two downstream USB ports. In these systems, the USB2422 can provide a compact connectivity hub without duplicating USB host-controller logic in the main processor. Product developers still need to validate downstream-port current limits, power-budget requirements, signal routing, and USB compliance in the complete enclosure and cable configuration. For layout, place the USB differential pairs as short and symmetric as practical, maintain the manufacturer-recommended impedance and spacing, and minimize stubs and unnecessary layer transitions. USB high-speed signals are differential and can be sensitive to discontinuities, so the PCB should use a continuous reference plane beneath the routed pairs. Decoupling, connector placement, chassis grounding, and ESD protection also require system-level review. This page combines the verified manufacturer description, package information, distributor references, pricing status, and source links with practical selection guidance and explicitly marked data gaps. It also distinguishes the USB2422 from the broader Microchip USB2512B family and explains why a nominal hub-function match is not automatically a verified pin-to-pin replacement.

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USB2422I-CP-TR - 2-Port USB 2.0 Hub Controller, 24-QFN | Microchip
USB2422I-CP-TR

USB2422I-CP-TR - 2-Port USB 2.0 Hub Controller, 24-QFN | Microchip

The Microchip USB2422I-CP-TR is a low-power, single transaction translator USB 2.0 hub controller with two downstream ports for embedded USB solutions, packaged in a 24-pin QFN. It attaches to an upstream port as a Hi-Speed and Full-Speed hub, or as a Full-Speed-only hub, and supports Low-Speed, Full-Speed and Hi-Speed downstream devices when configured as a Hi-Speed hub. A USB hub controller is a semiconductor that manages traffic between one upstream USB host port and multiple downstream device ports. In the USB hierarchy it sits below a USB host controller, above USB peripherals, and inside the wider class of interface ICs. Unlike a host controller that enumerates the whole bus, a hub controller segments a single USB segment into multiple ports, adding tiered topology, port over-current detection and per-port power management to embedded designs. The USB2422 uses a single transaction translator architecture, which keeps die area and system cost low for embedded hubs. All USB port resistors are integrated: every required series termination resistor on the D+ and D- pins, all required pull-down and pull-up resistors on D+ and D-, and internal pull-up resistors on the downstream-facing over-current sense inputs. That integration removes external discrete networks from the USB port layout. The controller attaches upstream as a Hi-Speed and Full-Speed hub or as a Full-Speed-only hub, giving the designer a path to reuse one PCB across both high-speed and legacy USB peripherals. Downstream port support covers Low-Speed, Full-Speed and Hi-Speed devices, so keyboards, mass storage, HID and composite peripherals can coexist behind the hub. The SMBus 1.0 specification voltage, power and timing characteristics are met for slave-only devices, with the noted exceptions documented in the datasheet. Typical embedded uses include industrial HMI panels, medical instrument consoles, set-top and smart-home gateways, USB-to-serial and USB-to-Ethernet bridges, and multi-port charging and docking stations. The 24-QFN package with a compact 4 x 4 mm footprint supports dense board layouts where connector count is constrained. One key design consideration is port power budgeting: each downstream port must source current per the USB specification, so the board supply and any port-current switches must be sized for the worst case of all ports loaded simultaneously, not the nominal single-device case. This page combines the manufacturer hub controller description, package and feature data with practical port-resistor, thermal and layout guidance, drop-in alternatives and a parameter comparison that is not consolidated in a single manufacturer document.

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USB2422T-I/MJ - 2-Port USB 2.0 Hub Controller | Microchip
USB2422T-I/MJ

USB2422T-I/MJ - 2-Port USB 2.0 Hub Controller | Microchip

Microchip USB2422T-I/MJ is a low-power, two-port USB 2.0 hub controller with a single transaction translator, designed for embedded USB systems in a 24-QFN 4 x 4 mm package. It supports Hi-Speed, Full-Speed, and Low-Speed downstream devices when configured as a Hi-Speed hub and operates from 3 V to 3.6 V. The two downstream ports make the device suitable for compact host systems that need to add USB connectivity without employing a larger multi-port hub controller. A USB hub controller is an interface integrated circuit within the USB interface-controller category and broader semiconductor hierarchy. It manages traffic between one upstream USB port and multiple downstream ports, providing device attachment, enumeration, power management, and transaction handling. USB 2.0 hubs can operate at Hi-Speed, Full-Speed, or Low-Speed, allowing one embedded platform to support peripherals with different transfer capabilities while maintaining backward compatibility. The USB2422 uses a single transaction translator rather than the multiple-port implementation associated with larger hub controllers. Its principal benefits are low power consumption, a compact 24-QFN footprint, and integration for two downstream USB ports. The verified distributor information identifies the device as a low-pin-count, two-port USB 2.0 Hi-Speed hub controller. Tape-and-reel ordering is indicated by the /MJ package suffix, while the /I suffix identifies the orderable grade. The controller can attach to an upstream port as a Hi-Speed and Full-Speed hub or as a Full-Speed-only hub. When used in Hi-Speed mode, downstream Low-Speed, Full-Speed, and Hi-Speed devices are supported. This flexibility lets one board design accommodate different host-controller capabilities and peripheral populations. The operating range of 3 V to 3.6 V also allows integration with conventional 3.3 V embedded USB power rails. Typical uses include compact industrial equipment, USB-to-serial bridges, data-acquisition equipment, set-top boxes, printers, and embedded computing platforms requiring two USB connections. The hub is also appropriate where an embedded host must expose multiple USB peripherals while conserving board area. Because the USB2422 is a hub controller rather than a general-purpose host controller, the upstream system must provide the USB host interface and the required software support. PCB implementation requires careful high-speed signal routing, controlled impedance, short differential traces, solid ground-plane continuity, and compliant USB connector and protection implementation. Decoupling should be placed close to the supply pins, while differential pairs should remain continuously referenced to an uninterrupted ground plane. The exposed-pad thermal and electrical requirements should follow the manufacturer land pattern and PCB stack-up guidance. This page combines the verified manufacturer and distributor information with practical USB layout guidance, comparison data, sourcing answers, and design considerations. Exact pin assignments, electrical limits, host-interface timing, and pricing details require confirmation in the current Microchip datasheet and authorized distributor listings.

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USB2422T/MJ - 2-Port USB 2.0 Hub Controller | Microchip
USB2422T/MJ

USB2422T/MJ - 2-Port USB 2.0 Hub Controller | Microchip

The Microchip Technology USB2422T/MJ is a low-power, two-port USB 2.0 hub controller with a single transaction translator, designed for embedded USB hub implementations. It supports High-Speed and Full-Speed operation on the upstream side, while downstream devices can operate at Low-Speed, Full-Speed, or High-Speed when the hub is configured for High-Speed operation. The device is supplied in a 24-QFN 4 x 4 mm package. A USB hub controller is an interface IC that manages traffic between an upstream host and multiple downstream USB peripherals. The USB2422 combines the physical-layer connectivity, port management, transaction translation, and hub-specific control functions required to expand one host USB port into two downstream ports. It belongs to the USB interface controller hierarchy, which sits within interface ICs and broader embedded semiconductor systems. The controller integrates the required USB port resistors, including series termination resistors on D+ and D-, pull-down and pull-up resistors on D+ and D-, and internal pull-ups for the downstream over-current sense inputs. This integration reduces external discrete-component count and simplifies embedded hub-board layouts. The upstream interface can operate as a High-Speed and Full-Speed hub or as a Full-Speed-only hub, providing configuration flexibility for different host links and legacy peripherals. Microchip specifies conformance with the SMBus 1.0 voltage, power, and timing characteristics for slave-only devices except where Section 4.3 specifies otherwise. This makes the controller relevant to managed USB connectivity designs that use SMBus sideband signaling. Its two downstream ports are intended for embedded docking stations, compact equipment, industrial panels, and other USB expansion systems where external discrete hub electronics would add complexity. Typical applications include USB-to-USB port expansion, embedded test and measurement equipment, industrial control panels, media appliances, and compact host systems. The 4 x 4 mm QFN package supports space-constrained designs, but exposed-pad layout and thermal management must follow the manufacturer's recommended land pattern. When designing with the USB2422T/MJ, preserve the D+ and D- geometry, provide the required USB connection and bypass components, and use the package's exposed thermal pad as a low-impedance ground and heat-spreading path. Verify upstream and downstream operating-mode configuration, suspend behavior, and over-current handling in the complete system rather than assuming standard desktop-hub behavior. This page consolidates the verified manufacturer and distributor information, explains the USB2422's integration benefits, identifies practical design constraints, and separates confirmed drop-in alternatives from candidates that require footprint verification before substitution.

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USB2502-AEY - 2-Port USB 2.0 Hub Controller | SMSC
USB2502-AEY

USB2502-AEY - 2-Port USB 2.0 Hub Controller | SMSC

The SMSC USB2502-AEY is a 2-port USB 2.0 hub controller that connects one upstream host port to two downstream-facing USB ports. The verified product material identifies support for Low-Speed operation at 1.5 Mb/s and Full-Speed operation at 12 Mb/s; when attached to a High-Speed host, both downstream ports can also support High-Speed operation at 480 Mb/s. It is available in a QFN package. A USB hub controller is an interface semiconductor within the broader USB interface-controller hierarchy. Its function is to manage traffic from one USB host connection across multiple downstream ports while supporting the speed modes permitted by USB 2.0. Configuration can be handled through strapping options, an external EEPROM, or a microcontroller interface; with a microcontroller, the hub operates as an SMBus slave device. The principal engineering benefits are its two-port integration, upstream Full-Speed or High-Speed attachment, and configurable setup. Downstream devices may operate at Low-Speed, Full-Speed, or High-Speed when the hub is attached to a High-Speed host. This allows one controller to serve keyboards, storage, communications adapters, and other USB peripherals without requiring separate upstream controllers. Technical implementation requires careful treatment of USB signal integrity, power distribution, grounding, and enumeration. The controller coordinates device attachment and port behavior, but the final system must still meet USB 2.0 layout, capacitance, and power requirements. Exact electrical limits, pin assignments, clock requirements, and package dimensions must be taken from the Microchip manufacturer datasheet rather than inferred from marketplace listings. Typical uses include compact USB hubs, embedded host systems, docking equipment, peripheral expanders, and industrial adapters. In these systems, USB2502-AEY provides the multi-port coordination logic while external power switches, connectors, crystal or clock circuitry, and supporting passives implement the physical USB interface. Exact bill-of-material requirements should be confirmed against the datasheet reference implementation. For USB hub layouts, keep high-speed traces short and controlled, provide continuous return paths, place required decoupling close to the device, and validate differential impedance and connector placement in the assembled board. The available data does not state the package pin count, operating-temperature range, voltage limits, or full ordering-code characteristics, so those values must not be guessed.

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USB2502-AEZG - 2-Port USB 2.0 Hub Controller | Microchip
USB2502-AEZG

USB2502-AEZG - 2-Port USB 2.0 Hub Controller | Microchip

Microchip Technology USB2502-AEZG is a 2-port USB 2.0 hub controller supporting low-speed operation at 1.5 Mb/s, full-speed operation at 12 Mb/s, and high-speed operation at 480 Mb/s when connected to a high-speed host. The device is available in a 36-pin QFN with exposed pad package measuring 6 x 6 mm. A USB hub controller is an interface semiconductor that expands one upstream USB connection into multiple downstream ports. It belongs to the USB interface controller family within the broader hierarchy of interface ICs, USB controllers, semiconductors, and embedded connectivity solutions. The USB2502 manages traffic between an upstream host and two downstream-facing ports while supporting devices that negotiate low-, full-, or high-speed operation. According to the Microchip USB2502 product page, the controller is fully compliant with the USB 2.0 Specification. The principal feature is integrated two-port USB 2.0 support in one package. Each downstream-facing port can accommodate a USB 2.0 device operating at 1.5 Mb/s, 12 Mb/s, or 480 Mb/s. This mixed-speed capability makes the controller suitable for systems that must connect peripherals with different bandwidth requirements. The verified manufacturer and distributor descriptions also identify full power management with ganged power control, helping coordinate downstream-port power behavior in bus-powered or self-powered designs. The USB2502-AEZG is supplied as a 36-QFN-EP package identified by DigiKey as 6 x 6 mm. Its package includes an exposed pad, making careful thermal via and copper-pour design important. The operating details visible in the supplied sources include a 3 V to 3.6 V supply range and USB interface functionality, while several electrical, timing, current, and environmental limits remain unavailable in the provided extraction and are therefore identified as data needed rather than estimated. Typical applications include compact USB hubs, docking stations, industrial USB expansion panels, peripheral connection panels, embedded host systems, and test equipment requiring two downstream USB 2.0 ports. The controller can also bridge high-speed hosts to lower-speed USB devices because each downstream port supports the full USB 2.0 speed set. Designers should still validate hub power budget, enumeration behavior, signal routing, and device-specific host compatibility before production release. For implementation, follow the manufacturer datasheet for decoupling, upstream and downstream differential-pair routing, crystal or clock requirements, power-gating connections, and exposed-pad thermal management. USB differential pairs should be routed as controlled-impedance, tightly coupled traces over a continuous reference plane, with minimal stubs and avoidance of right-angle transitions. The verified datasheet title identifies the document as DS000002248A, and the exposed pad should be connected according to its land pattern and assembly guidance rather than inferred from distributor package descriptions. This product page consolidates verified manufacturer and distributor information, exact source prices, package details, speed support, and practical engineering guidance. It also separates verified USB 2.0 capabilities from unverified parameters so procurement and design decisions can be based on traceable evidence.

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USB2502-HD - 2-Port USB 2.0 Hub Controller | Microchip
USB2502-HD

USB2502-HD - 2-Port USB 2.0 Hub Controller | Microchip

The Microchip USB2502-HD is a two-port USB 2.0 hub controller that complies with the Universal Serial Bus Specification Revision 2.0 and operates as a full-speed hub or a full-/high-speed hub. Its two enabled downstream ports support low-speed devices at 1.5 Mb/s, full-speed devices at 12 Mb/s, and high-speed devices at 480 Mb/s when operated with a high-speed host. It is packaged as an integrated circuit, but the verified sources do not specify the exact package variant or dimensions. A USB hub controller is an interface semiconductor that expands one host USB connection into multiple downstream ports. It belongs to the USB interface controller hierarchy, alongside transceivers, host controllers, and device controllers. The hub manages enumeration, port power, connect and disconnect events, and transaction routing while allowing multiple USB peripherals to share one upstream host port. The principal feature of USB2502-HD is support for two downstream-facing ports and USB 2.0 operation. Low-speed, full-speed, and high-speed device support provides compatibility with keyboards, mice, storage devices, printers, and other USB peripherals. The controller can attach to a full-speed host or a higher-speed host, with downstream high-speed operation available when the hub is connected in the required high-speed configuration. Technically, USB2502-HD integrates the hub-control function into a dedicated interface IC rather than requiring a general-purpose processor. According to the Microchip USB2502 datasheet, the device is fully compliant with the Universal Serial Bus Specification Revision 2.0 dated April 27, 2000, including the cited errata. The available verified data does not state operating voltage, clock frequency, transceiver current, temperature range, pin count, or package dimensions. Typical uses include USB expansion in embedded systems, industrial control equipment, test instruments, printers, storage enclosures, and computer peripherals. The two-port architecture is useful when one host port must connect to two accessories while retaining support for both legacy and high-speed USB devices. Existing board revisions should be checked against the manufacturer package drawings before layout reuse or substitution. The most important design consideration is that a hub is only one part of the USB channel design. Upstream and downstream routing, connector placement, power-supply capacity, decoupling, ground continuity, and USB signal-integrity layout can determine whether advertised 480 Mb/s operation is reliable. Use the complete Microchip datasheet and its reference circuit for component values, layout geometry, and validation requirements. This product page consolidates the verified USB2502-HD commercial information, USB speed capabilities, official datasheet link, and sourcing details. It does not invent unavailable electrical or package specifications, and it distinguishes verified USB behavior from values that still require datasheet confirmation.

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USB2502-HT - 2-Port USB 2.0 Hub Controller | Microchip
USB2502-HT

USB2502-HT - 2-Port USB 2.0 Hub Controller | Microchip

The Microchip Technology USB2502-HT is a two-port USB 2.0 hub controller supporting low-speed, full-speed, and high-speed USB devices in a 48-pin TQFP package. According to Microchip's USB2502 data sheet, its two downstream-facing ports can operate at 1.5 Mb/s, 12 Mb/s, or 480 Mb/s when connected to a high-speed host. The controller is designed for systems that need to expand one USB host connection into two downstream USB ports while maintaining USB 2.0 specification compliance. A USB hub controller is an interface integrated circuit that manages traffic between an upstream host and multiple downstream ports. In the USB hierarchy, it belongs to the USB interface-controller class, the broader interface-IC category, and ultimately the semiconductor device hierarchy. The USB2502 is intended for computers, peripherals, embedded systems, industrial equipment, and other USB 2.0 host platforms that require downstream-port expansion. Key verified features include two downstream-facing USB ports, USB 2.0 specification compliance, operation with a high-speed host, and support for low-, full-, and high-speed devices. The Microchip data-sheet result identifies the device as a fully specification-compliant USB 2.0 2-port hub and states compliance with Universal Serial Bus Specification Revision 2.0 dated April 27, 2000, including the listed 12/7/2000 and 5/28/2002 errata. The verified distributor listing identifies the physical part as a 48-TQFP USB interface IC. The controller separates upstream host traffic from the two downstream links, allowing peripheral devices such as keyboards, storage devices, network adapters, and human-interface devices to share one USB host port. System designers must provide the required USB transceiver, clock, decoupling, connectivity, and external passives described by the manufacturer data sheet. The controller itself is not a power-management IC and has no SOA data in the supplied sources. Typical uses include two-port desktop hubs, embedded USB expansion, peripheral connection panels, test equipment, and industrial USB interfaces. For a new design, validate the host controller, connector overmolding, cable lengths, enumeration behavior, power budgeting, and all USB electrical and timing requirements. The supplied evidence identifies the USB2502 family, but does not provide a complete pin-by-pin pinout or every operating limit, so those details remain to be verified from the manufacturer documentation. This product page consolidates the verified manufacturer description, distributor package information, source links, and engineering-use guidance for USB2502-HT selection. It intentionally distinguishes verified facts from missing electrical details instead of estimating unspecified values.

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USB2503-HZE - USB 2.0 3-Port Hub Controller | Microchip
USB2503-HZE

USB2503-HZE - USB 2.0 3-Port Hub Controller | Microchip

The Microchip USB2503-HZE is a USB 2.0 three-port hub controller packaged in a 48-QFN (7x7 mm) package. According to the verified manufacturer material, it is fully compliant with the USB 2.0 Specification, does not require firmware development, and supports low-speed, full-speed, and high-speed downstream devices when attached to a compatible host. Its principal role is to add three downstream USB ports while presenting one upstream connection to the host system. A USB hub controller is an interface integrated circuit that manages traffic between one upstream USB connection and multiple downstream ports. It belongs to the USB interface-controller family and the broader semiconductor and connectivity hierarchy. By handling USB enumeration, port attach and detach events, and downstream power-management coordination, the controller reduces the amount of host software and external glue logic required in a USB hub design. The verified product information identifies the USB2503 as a three-port hub controller compliant with USB 2.0. The manufacturer description states that the controller does not require firmware development, simplifying implementation compared with solutions that need device-specific firmware or a substantial software stack. Downstream ports can operate at 1.5 Mb/s low speed and at the other USB speed modes supported by the USB 2.0 specification when connected to an appropriate high-speed host. The HZE suffix identifies the ordered package variant associated with the supplied datasheet and distributor records. The device is offered in a 48-QFN (7x7 mm) surface-mount package, making it suitable for compact USB hub equipment where the connector footprint and board area are constrained. The package requires careful placement of power, USB data, configuration, clock, and exposed-pad connections according to the manufacturer pinout and layout guidance. Typical applications include USB hubs, docking stations, desktop and laptop peripherals, embedded USB expansion systems, industrial equipment, test and measurement products, and host systems requiring additional USB connectivity. The controller can also support designs that need automatic connection to a USB host without developing a dedicated USB hub firmware image. For implementation, confirm the exact USB operating modes, electrical limits, regulator requirements, crystal or clock configuration, port-power requirements, and exposed-pad layout against the USB2503/USB2503A manufacturer datasheet. When comparing a replacement, verify that the candidate uses the same 48-QFN footprint, pin functions, voltage requirements, USB electrical behavior, and intended upstream/downstream configuration rather than relying only on the apparent USB 2.0 hub function. This page consolidates the verified USB2503-HZE product description, distributor references, datasheet links, package information, pricing references, and engineering selection guidance. It is intended to help designers identify whether the controller fits a USB hub design and to locate the manufacturer documentation needed for a final, board-specific engineering review.

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USB2503-HZH - 3-Port USB 2.0 Hub Controller | Microchip
USB2503-HZH

USB2503-HZH - 3-Port USB 2.0 Hub Controller | Microchip

The Microchip USB2503-HZH is an integrated USB 2.0 compliant 3-port hub controller housed in a 48-pin QFN-EP (7x7 mm) package with an exposed thermal pad. The device is fully compliant with the USB 2.0 specification and requires no firmware development, simplifying integration into embedded systems, docking stations, monitors, and multi-port consumer electronics. When attached to a USB high-speed host, the three downstream ports each support low-speed (1.5 Mb/s), full-speed (12 Mb/s), and high-speed (480 Mb/s) operation through dedicated transaction translators. A USB hub controller is a line/bus controller that expands a single upstream USB port into multiple downstream ports while handling protocol translation, power management, and device enumeration. The USB2503 belongs to the hub controller family, which sits within the broader USB interface IC category and the overall peripheral controller hierarchy. The device integrates a Transaction Translator (TT) per port using Microchip's MultiTRAK technology, which improves concurrent bandwidth by allowing multiple full-/low-speed devices to operate simultaneously without bandwidth contention. Key features include pin-selectable default configuration, optional EEPROM or SMBus microcontroller configuration, integrated 1.8 V core LDO, support for both bus-powered and self-powered modes, dynamic port-power switching, and per-port overcurrent detection. The 48-QFN-EP package provides an exposed thermal pad for enhanced heat dissipation and a 0.5 mm pitch for compact PCB layout. The device operates from 3.0 V to 3.6 V and supports a 0 °C to 70 °C commercial temperature range. Architecturally, the USB2503 combines a USB 2.0 physical layer, serial interface engine, hub repeater, three transaction translators, and port-control logic on a single die. The integrated USB transceivers support both high-speed (480 Mb/s) and full-speed (12 Mb/s) signaling, with internal pull-up/pull-down resistors defined by the USB specification. Configuration via an external I2C EEPROM or an SMBus-capable microcontroller enables vendor ID, product ID, port-remap, and non-removable-port settings without firmware changes to the host. Typical applications include USB port expansion in desktop PCs, docking stations, monitors with built-in USB hubs, industrial PCs, point-of-sale terminals, embedded computing platforms, and USB-equipped printers. Designers select this part when a 3-port USB 2.0 hub is needed with no firmware investment and minimal BOM cost. When designing with this part, ensure downstream-port power filtering complies with USB 2.0 inrush and voltage-drop budgets, and connect 10 kΩ pull-ups on SDA/SCL per the SMBus 1.0 specification. The exposed pad must be soldered to the ground plane to meet thermal and EMI performance. This page synthesizes distributor pricing, pin-compatible drop-in alternatives such as the USB2513B-AEZC family, and practical layout notes not consolidated in the manufacturer datasheet.

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USB2503A-HZE - USB 2.0 3-Port Hub Controller | Microchip
USB2503A-HZE

USB2503A-HZE - USB 2.0 3-Port Hub Controller | Microchip

The Microchip Technology USB2503A-HZE is a USB 2.0-compatible three-port hub controller with no firmware development required, supplied in a 48-QFN package. It supports downstream operation at high-speed 480 Mbit/s, full-speed 12 Mbit/s, and low-speed 1.5 Mbit/s when connected to a USB high-speed host. Three transaction translators provide independent downstream-port operation and improve performance when multiple devices communicate concurrently. A USB hub controller is a system semiconductor that bridges one upstream USB port to multiple downstream ports while implementing the electrical, protocol, and power-management behavior defined by USB. The USB2503A belongs to the USB interface-controller hierarchy, where USB interface ICs manage host, device, or hub connectivity and help organize peripherals into a tiered USB topology. The principal documented features include USB 2.0 compliance, three downstream ports, three transaction translators, and support for high-speed, full-speed, and low-speed devices. The hub does not require firmware development, which can simplify product integration and reduce the software validation burden. Its 48-QFN package also supports compact multilayer PCB layouts, although exposed-pad thermal management and careful high-speed layout remain important. Dynamic power switching allows the controller to monitor the external SELF_PWR signal and detect changes in local power availability. When the power source changes, the hub disconnects downstream devices and the upstream port before reconnecting as either a bus-powered or self-powered hub according to the available power configuration. This behavior helps prevent devices from receiving inadequate current during source transitions. The SMBus configuration interface uses the SDA/SMBDATA and SCL/SMBCLK/CFG_SELO lines. The manufacturer datasheet requires external pull-up resistors, with 10 kΩ recommended, from those lines to VCC. Designers should follow the SMBus 1.0 Specification and applicable EEPROM manufacturer guidance when the configuration EEPROM is used. Typical installations include USB docking stations, desktop peripherals, embedded host systems, industrial equipment, and multi-device USB hubs. Application selection must account for upstream and downstream cable length, bus-powered load limits, self-powered operation, EEPROM configuration, and high-speed signal integrity. The available distributor pricing starts at $1.56 as of 2026-10-28, while exact lifecycle, voltage, current, and pin-level details should be confirmed against the manufacturer datasheet and current Microchip product page. This page consolidates verified manufacturer and distributor information, explicitly identifies unavailable engineering data, and avoids presenting unverified substitutes as guaranteed drop-in replacements. This distinction is important because a USB hub controller replacement must match package geometry, pin functions, electrical limits, configuration interface behavior, and power-management timing—not merely the number of USB ports.

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USB2503A-HZH - USB 2.0 3-Port Hub Controller | Microchip
USB2503A-HZH

USB2503A-HZH - USB 2.0 3-Port Hub Controller | Microchip

Microchip USB2503A-HZH is a USB 2.0-compatible three-port USB hub controller with a 48-QFN-EP 7 x 7 mm package. It supports low-speed operation at 1.5 Mb/s, full-speed operation at 12 Mb/s, and high-speed operation at 480 Mb/s. The controller operates from 1.62 V to 3.6 V and includes three transaction translators, flexible configuration options, and selectable downstream-port power management. A USB hub controller is an interface IC within the USB interface-controller hierarchy. It connects one upstream USB host connection to multiple downstream USB ports, allowing peripherals such as storage devices, keyboards, network adapters, and industrial USB modules to share one host port. Unlike a host controller that manages operating systems and device software, the USB2503A-HZH handles USB signaling, port transactions, configuration, and power distribution while requiring no firmware development. The principal features include full USB 2.0 operation, one transaction translator per downstream port, low-speed, full-speed, and high-speed device support, per-port or ganged power control, and detection of both bus-powered and self-powered operating conditions. Configuration can use pin-selectable defaults, an external serial EEPROM, or a microcontroller interface. When the microcontroller interface is used, the hub operates as an SMBus slave device. In the architecture described by the Microchip USB2503/USB2503A datasheet 00002249A, dynamic power switching monitors the external SELF_PWR input. If the available power source changes, the hub disconnects downstream devices and the upstream connection before reattaching in the appropriate bus-powered or self-powered configuration. External 10 kΩ pull-up resistors are recommended on SDA/SMBDATA and SCL/SMBCLK/CFG_SEL0 lines according to the SMBus 1.0 Specification and EEPROM-manufacturer guidance. Typical implementations include compact desktop USB expansion, USB-to-serial systems, embedded equipment with multiple service connections, data-acquisition equipment, and powered peripherals. The three downstream ports are useful when a compact host interface must support several external devices without adding another system controller. The primary design constraint is accurate implementation of USB power, signal routing, configuration straps, and exposed-pad thermal management. Maintain the specified USB differential routing and supply decoupling, and verify the external power-source transition behavior before enabling downstream loads. Because the available web data does not provide a complete pin table, designers should use the manufacturer datasheet for final pin assignments and layout values. This page consolidates the verified USB 2.0 speeds, operating range, package information, configuration methods, and sourcing links for USB2503A-HZH. It also identifies the manufacturer's recommended USB2513B replacement direction while clearly distinguishing a documented replacement path from a verified pin-for-pin drop-in substitute.

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USB2504-JT USB 2.0 4-Port Hub Controller | Microchip
USB2504-JT

USB2504-JT USB 2.0 4-Port Hub Controller | Microchip

The Microchip Technology USB2504-JT is a USB 2.0 four-port hub controller with no firmware development required, supporting low-speed 1.5 Mb/s, full-speed 12 Mb/s, and high-speed 480 Mb/s downstream operation in a 64-pin TQFP package measuring 10 x 10 mm. The controller integrates the hub interface logic needed to manage four USB downstream ports while attaching to a USB host. An integrated USB hub controller is a semiconductor interface device that expands one host USB connection into multiple downstream ports. It sits between a USB host and peripherals, handling port attach, disconnect, enumeration, power-gating, and traffic routing. The USB2504 family is positioned within the USB interface-controller and peripheral-controller hierarchy, providing infrastructure for USB hubs without requiring a separate hub firmware. Key features include compliance with the USB 2.0 specification, four downstream ports, firmware-free configuration, low-speed, full-speed, and high-speed downstream support, and operation from a 3 V to 3.6 V supply according to the USB2504A-JT comparison data. Configuration can use strapping options, an external EEPROM, or a microcontroller interface; when connected to a microcontroller, the hub appears as an SMBus slave device. The controller is designed for USB hubs, docking stations, KVM equipment, and embedded systems that need more than one USB port. Its 64-pin TQFP package provides the required external connectivity for four downstream channels and upstream USB signaling. USB 2.0 hub designs must still provide correct power distribution, downstream-port protection, layout routing, and connector implementation; the controller itself does not eliminate those board-level requirements. A key design consideration is power budgeting. Each enabled downstream port can require current for attached USB devices, so the power supply, switches, protection components, and connector wiring must be sized for the worst-case load. High-speed USB traces also require controlled impedance, short return paths, and careful separation from noisy power and switching circuitry. Microchip documentation provides configuration guidance for EEPROM and microcontroller-based implementations. This page synthesizes verified manufacturer and distributor information, cross-reference results, package details, and practical engineering considerations. It distinguishes documented USB2504 features from parameters that require confirmation in the manufacturer datasheet, helping engineers evaluate the USB2504-JT for four-port USB hub designs.

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USB2504A-JT - USB 2.0 4-Port Hub Controller | Microchip
USB2504A-JT

USB2504A-JT - USB 2.0 4-Port Hub Controller | Microchip

The Microchip Technology USB2504A-JT is a USB 2.0 four-port hub controller supporting high-speed 480 Mbit/s, full-speed 12 Mbit/s, and low-speed 1.5 Mbit/s devices. It is supplied in a 64-pin TQFP package measuring 10 mm by 10 mm and operates from a 3 V to 3.6 V supply. A USB hub controller is an interface IC that expands one upstream USB connection into multiple downstream ports while managing transaction translation, enumeration, power, and device connectivity. The USB2504A belongs to the USB interface-controller hierarchy, integrating USB 2.0 connectivity and four-port hub management into a single semiconductor device. The controller provides four transaction translators, one per downstream port, for independently handling supported USB traffic speeds. It supports per-port or ganged, selectable downstream power control and can detect whether the hub source is bus-powered or self-powered. According to the Microchip product page, the device is fully USB 2.0 compliant and requires no firmware development. Configuration can begin with pin-selectable defaults, limited strapping options, an external EEPROM, or a microcontroller interface. When configured through a microcontroller, the hub appears as an SMBus slave, allowing an external controller to alter supported configuration options. Dynamic power switching monitors the SELF_PWR input and removes downstream and upstream power when local supply availability changes. Typical uses include USB 2.0 docking stations, desktop hubs, KVM equipment, external storage interfaces, embedded USB expanders, and industrial peripheral hubs. Four high-speed transaction translators make the controller appropriate when several peripherals must coexist behind one host connection without relying on USB firmware. PCB design must preserve high-speed USB routing discipline, including a short upstream path, controlled impedance, continuous reference planes, and placement of required decoupling close to the device. The exact pin names, capacitor values, clock requirements, operating temperature, and power ratings must be confirmed against the manufacturer datasheet before layout release. This page consolidates the verified manufacturer and distributor facts, distinguishes the explicitly supported USB2504-JT cross-reference from unsupported substitutions, and identifies engineering details that still require direct datasheet confirmation.

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