USB2380-AB25NI - PCI to USB 2.0 Bridge | Broadcom
MPN： USB2380-AB25NI ✓ 啟用中USB2380-AB25NI 概覽
A PCI-to-USB bridge is an interface controller that allows a PCI-based system to communicate with USB devices through a dedicated controller rather than relying exclusively on a newer USB host interface. Within the broader semiconductor hierarchy, the USB2380-AB25NI is an interface IC that sits between PCI system buses and USB peripherals, with USB 2.0 providing the downstream device interface.
The principal documented features are USB 2.0 high-speed support, PCI Express Generation 1.0 compatibility, and a surface-mount 88-QFN package. The 10 mm by 10 mm package provides a substantial exposed thermal and mounting footprint compared with smaller lead-frame packages. This is useful when a board has sufficient area for the controller and its associated routing, power, and interface networks.
The controller is intended for embedded and legacy platform designs where a conventional PCI host must connect to USB 2.0 peripherals. Its role differs from a general-purpose USB hub because the device bridges a PCI interface to the USB bus rather than expanding an existing USB host port. It also differs from newer USB controllers that may provide more extensive power management, protection, or firmware support.
Typical design contexts include PCI-compatible embedded systems, industrial equipment, test systems, and legacy peripheral platforms. A design must account for PCI routing, USB signal integrity, reference-clock requirements, decoupling, and the thermal characteristics of the 88-QFN package. The USB 2.0 bus also requires correct connector and device-capability planning for high-speed or full-speed peripherals.
Because this controller targets an established and mature interface combination, verify that the system architecture, firmware, operating-system support, and peripheral devices are compatible before committing to the design. Check the manufacturer pin-description table and reference design for exact signal assignments, exposed-pad connection, and recommended component values.
This page consolidates the verified interface, package, pricing, and sourcing details into an engineering-focused reference. It also highlights the limited drop-in replacement landscape and separates confirmed USB2380-AB25NI information from parameters that require confirmation from the Broadcom datasheet before layout or production release.
直接替換替代品，適用於 USB2380-AB25NI — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品USB2380-AB25NI 最大額定值與電氣特性
| Manufacturer | Broadcom Limited |
| Product Type | PCI-to-USB interface controller |
| Host Interface | PCI Express Generation 1.0 |
| USB Interface | USB 2.0 high-speed |
| Bridge Direction | PCI to USB |
| 封裝 | 88-QFN (10 mm x 10 mm) |
| 安裝類型 | Surface mount |
| RoHS 狀態 | RoHS |
| Lead-Free Status | Lead Free |
USB2380-AB25NI 88-qfn (10 mm x 10 mm) 腳位配置指南
USB2380-AB25NI（88-qfn (10 mm x 10 mm) 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： USB2380-AB25NI.
請參閱 資料表 以查看完整腳位配置。
典型應用
USB2380-AB25NI 適用於 6 應用s: Legacy PCI Embedded Host, USB 2.0 Peripheral Bridge, Industrial Control Equipment, Test and Measurement Systems, Legacy Peripheral Expansion, Data Acquisition and Communication Equipment.
Legacy PCI Embedded Host
The USB2380-AB25NI fits a legacy embedded platform that retains a conventional PCI host interface but needs to connect USB 2.0 peripherals. Its confirmed PCI Express Generation 1.0 host side and USB 2.0 device side allow the controller to serve as the interface boundary between those buses. The 88-QFN package measures 10 mm by 10 mm, so the board must provide sufficient area and routing space for the controller and its supporting circuitry.
推薦
USB 2.0 Peripheral Bridge
The USB2380-AB25NI can be used where a PCI-based system must expose a dedicated USB 2.0 peripheral interface. The confirmed USB 2.0 high-speed capability makes it appropriate for equipment combining an established PCI controller with peripherals that require USB connectivity. The design must account for correct USB routing, termination requirements, reference-clock implementation, connector protection, and the pin assignments shown in the manufacturer documentation.
推薦
Industrial Control Equipment
For industrial equipment built around an established PCI architecture, the USB2380-AB25NI provides a defined route to USB 2.0 peripherals without redesigning the host bus. The device is most relevant in brownfield equipment where compatibility with an existing controller, board area, and peripheral ecosystem is more important than the latest interface features. Confirm operating-temperature, lifecycle, transient-protection, and certification requirements before production use.
推薦
Test and Measurement Systems
The USB2380-AB25NI is applicable to test and measurement platforms that retain a PCI host and need to attach USB 2.0 instruments, adapters, or service peripherals. Its dedicated bridge role avoids treating a general USB hub as a substitute because the device connects a PCI host side to USB device side. Layout planning should preserve the 10 mm by 10 mm package footprint and incorporate the manufacturer clocking, decoupling, and routing guidance.
推薦
Legacy Peripheral Expansion
The USB2380-AB25NI can support legacy peripheral expansion where a system's principal internal bus is PCI and added peripherals communicate through USB 2.0. This use is appropriate when maintaining an installed board, enclosure, driver stack, or peripheral set is more practical than redesigning the system around a newer host controller. Engineers should verify software-driver support and the exact electrical requirements of every attached peripheral.
推薦
Data Acquisition and Communication Equipment
The USB2380-AB25NI can be incorporated into data-acquisition or communication equipment that uses PCI as the internal host interface and USB 2.0 for peripherals. The documented Generation 1.0 PCI Express side and USB 2.0 side establish the required bus compatibility, but throughput and latency limits must be evaluated against the selected devices. Board-level signal integrity, grounding, connector protection, and firmware compatibility remain essential design constraints.
推薦
工程參考資料，適用於 USB2380-AB25NI — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Manufacturer | Broadcom Limited |
| Product Type | PCI-to-USB interface controller |
| Host Interface | PCI Express Generation 1.0 |
| USB Interface | USB 2.0 high-speed |
| Bridge Direction | PCI to USB |
| Package | 88-QFN (10 mm x 10 mm) |
| Mounting Type | Surface mount |
| RoHS Status | RoHS |
主要差異化特點
- Dedicated PCI-to-USB bridge architecture (對比TUSB7340)
- Established 88-QFN board footprint (對比Newer USB controller packages)
- Broadcom interface-controller product family (對比Generic USB-to-PCI bridge candidates)
設計說明
Use the manufacturer package drawing and pin-description table as the controlling references for the 88-QFN land pattern. Place the controller and its decoupling network according to the recommended layout, provide a continuous ground reference beneath the package where permitted by the mechanical drawing, and route high-speed interfaces without unnecessary stubs. Exact pad dimensions and exposed-pad treatment must be confirmed before PCB release.
Keep the PCI Express and USB 2.0 interface routing short and controlled, with solid reference planes and continuous return paths beneath signal pairs. Avoid placing disruptive power or digital-routing transitions between interface sections. Apply the manufacturer's clock, decoupling, and impedance guidance once the operating conditions and board stack-up are known; those values should not be assumed from generic interface-layout rules.
Do not treat the USB2380-AB25NI as a conventional USB hub or assume that a controller with USB 2.0 support is automatically interchangeable. The host-side interface, PCI lane requirements, clock source, device firmware, and software drivers must all match the existing platform. Preserve the exact Broadcom part identity when checking the order code, and verify the pinout and exposed-pad connection directly from the manufacturer documentation.
Plan the core and USB I/O supply networks as separate functional domains unless the manufacturer datasheet permits a combined implementation. Verify voltage limits, current requirements, sequencing, and decoupling values before selecting regulators and capacitors. Account for ground return paths beneath the QFN body and check thermal performance at the highest expected ambient temperature and operating load.
合規資訊
The exact product listing identifies the USB2380-AB25NI-G as RoHS and lead-free. No explicit REACH, halogen-free, AEC-Q100, or conflict-minerals status was confirmed.
