USB2514B-AEZG-TR - 4-Port USB 2.0 HS Hub Controller | Microchip
MPN： USB2514B-AEZG-TR ✓ 啟用中USB2514B-AEZG-TR 概覽
A USB hub controller is the silicon that expands one USB port into several downstream ports while arbitrating traffic between them. In the USB hierarchy, a hub controller sits between a USB 2.0 host and downstream USB 2.0 peripherals: a USB 2.0 host controller manages the root port, a hub controller adds tiered fan-out, and each downstream device negotiates its own speed. The USB2514B family adds an I2C management interface so a system processor can read hub status registers and configure device behaviour.
Key features of this part include four USB 2.0 downstream ports, one USB 2.0 upstream port, MultiTRAK mixed-speed traffic handling for high-bandwidth and low-bandwidth devices sharing the same hub, and an I2C management interface for host-side configuration. The part has no ROM interface and no SmartHub logic, keeping the BOM small for cost-sensitive consumer and mobile equipment.
Technically, MultiTRAK is the key differentiator in this family: it arbitrates traffic so that a single high-bandwidth device does not starve the other ports in a mixed-speed network, which improves aggregate throughput compared with simpler legacy hubs. Because the device is a hub controller rather than a host, the upstream port connects to a host controller or another hub, and downstream ports attach directly to connectors.
Typical applications include compact USB 2.0 port expanders in consumer electronics, tablet and docking accessories, mobile charging and data cradles, industrial USB interface expansion, and embedded host systems needing more than the two ports typical of a USB 2.0 host controller.
When designing around the USB2514B-AEZG-TR, budget the 3.3 V rail for both hub and downstream port current, route the differential USB pairs as controlled-impedance 90 ohm lines, and confirm the upstream and downstream port overcurrent budget for each attached connector. The QFN-36 land pattern requires a fine-pitch, 0.50 mm footprint fanout that most assembly houses handle as a standard fine-pitch QFN process.
直接替換替代品，適用於 USB2514B-AEZG-TR — 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。
此系列的變體
與下列產品可直接替換的同系列型號： USB2514B-AEZG-TR （相同外形與佔位） — 差異在於 Package, Product Type, USB Standard, Configuration Interface, Technology.
USB2514B-AEZC-TR
✅ 直接替換聯絡詢價
查看資料表 →USB2514BI-AEZG-TR
✅ 直接替換聯絡詢價
查看資料表 →USB2514B/M2
✅ 直接替換聯絡詢價
查看資料表 →USB2514BT/M2
✅ 直接替換聯絡詢價
查看資料表 →USB2513BI-AEZG-TR
✅ 直接替換聯絡詢價
查看資料表 →USB2513B-AEZG-TR
✅ 直接替換📋 參考替代品（不在目錄中）
USB2512B-AEZG-TR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →USB2514B-AEZG-TR 規格
| Product Type | USB 2.0 Hi-Speed 4-Port Hub Controller |
| Manufacturer | Microchip Technology |
| Downstream Ports | 4 x USB 2.0 |
| Upstream Port | 1 x USB 2.0 |
| USB Speed | USB 2.0 High-Speed (480 Mbps) |
| 供應電壓 | 3.3 V |
| 工作溫度範圍 | 0 to 70 C (32 to 158 F) |
| Management Interface | I2C |
| Technology | MultiTRAK mixed-speed arbitration |
| Device Type | Line / Bus Controller |
| 封裝 | QFN-36 (6 x 6 mm, 0.50 mm pitch) |
| 安裝類型 | Surface Mount |
| SmartHub Logic | No |
| ROM Interface | No |
| RoHS 狀態 | Compliant |
| Ordering Code Suffix | -TR (tape and reel) |
| Operating System Support | Host driver dependent; no on-chip ROM interface |
USB2514B-AEZG-TR qfn-36 (6 x 6 mm, 0.50 mm pitch) 腳位配置指南
USB2514B-AEZG-TR（qfn-36 (6 x 6 mm, 0.50 mm pitch) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： USB2514B-AEZG-TR.
請參閱 資料表 以查看完整腳位配置。
典型應用
USB2514B-AEZG-TR 適用於 6 應用s: USB 2.0 Docking Station Port Expansion, Tablet and Mobile Charging Cradle, Consumer Electronics USB Port Expander, Industrial USB Interface Expansion, USB-to-Ethernet and Network Adapter Products, Embedded Host and Robotics Peripherals.
USB 2.0 Docking Station Port Expansion
The USB2514B-AEZG-TR is built for exactly this job: one upstream link from the docking station host controller, four downstream ports for peripherals. At a 3.3 V operating voltage it drops straight into the power architecture already used by USB 2.0 transceivers, and the commercial 0 to 70 C grade matches indoor dock operating environments. MultiTRAK arbitration is the meaningful benefit here, because a dock usually mixes a high-bandwidth device such as external storage with low-bandwidth keyboard and mouse devices, and single-ported legacy hubs let the storage traffic stall the human interface devices. Using the I2C management interface, the docking station's processor can read port status registers, detect connect and disconnect events, and apply per-port current limits. Design-wise, budget each downstream port for its full USB 2.0 enumeration current and confirm the total against the hub budget in the datasheet tables.
推薦
Tablet and Mobile Charging Cradle
Cradles and charging stands increasingly expose USB 2.0 data alongside power, and the USB2514B-AEZG-TR provides the port expansion without adding a separate host controller. Because the hub runs entirely from 3.3 V and its management is handled over I2C, a portable device's power-management microcontroller can supervise the ports directly and cut idle current. The four downstream ports support combinations such as a tablet upstream connection, an external keyboard, an external storage device, and a USB-C accessory, which is the typical configuration in modern mobile accessory designs. The small 6 x 6 mm QFN-36 land pattern keeps the hub out of the way in the tightest cradle designs, while RoHS compliance keeps the part acceptable for consumer and mobile programs. Keep the I2C pull-ups and the hub reference clock layout compact, and confirm that the mobile SoC supports hub mode on the host port.
推薦
Consumer Electronics USB Port Expander
Set-top boxes, smart displays, and home appliances frequently ship with only one or two USB ports yet need to accept external drives, keyboards, and service tooling. The USB2514B-AEZG-TR converts a single host USB 2.0 port into four downstream ports in one 6 x 6 mm QFN-36 footprint, which saves board area over discrete power switches and downstream protection. MultiTRAK keeps mixed-speed traffic fair, so a consumer will not perceive a peripheral as hung when another port is transferring files. The 3.3 V single-supply operation fits the same rail that already powers the device's USB transceiver, and I2C management lets the set's main SoC detect and report port events over the system's existing control bus. For cost-driven consumer builds, the absence of integrated flash and SmartHub logic keeps the BOM lean while still delivering four working ports.
推薦
Industrial USB Interface Expansion
Industrial HMIs, test stations, and process controllers often need more USB 2.0 ports than the embedded host controller provides, and the USB2514B-AEZG-TR allows that expansion while the existing host stays in place. The standard commercial 0 to 70 C rating covers most indoor industrial enclosures; for cabinets with higher internal temperatures, specify the industrial-temperature ordering code of the same family instead. In an industrial context, per-port overcurrent protection, ESD guarding, and the downstream port current budget matter more than in consumer gear, so treat the hub's port current limits as part of the protection scheme and add external protection where the connector is field-accessible. The I2C management interface lets the controller board log port faults and enforce port disable on demand, which supports longer field service intervals.
推薦
USB-to-Ethernet and Network Adapter Products
USB 2.0 Ethernet adapters and USB-to-network bridges usually need to present several USB ports to the user rather than only the data path, so the USB2514B-AEZG-TR is used to add peripheral ports next to the network interface. It shares the 3.3 V rail typical of USB network adapters and requires no separate clocking support beyond the hub's reference requirements listed in the datasheet. MultiTRAK arbitration matters in this product class because a network adapter carrying traffic can coexist with external storage on the same hub, and head-of-line blocking would stall the adapter's own transfers. The I2C management interface is often shared with the network controller, allowing a single management firmware path for both the hub and the network device, which simplifies driver development and reduces firmware size.
推薦
Embedded Host and Robotics Peripherals
Robotics controllers, test benches, and embedded Linux boards frequently expose USB 2.0 to external tooling, cameras, and debug adapters, and the USB2514B-AEZG-TR is a straightforward way to add four downstream ports behind one host port. The part targets the same mixed-speed environment that embedded systems produce, where a USB storage device and a serial USB adapter appear on the same bus, so MultiTRAK arbitration keeps the low-bandwidth debug path responsive. At 3.3 V the hub shares the regulator already sized for the board's USB transceiver, which simplifies the power tree and reduces the number of rails on space-constrained robotics boards. The I2C interface connects cleanly to the same embedded MCU or application processor that already manages the host controller, so port enumeration status can be surfaced in the device's diagnostic interface without adding another bus.
推薦
推薦產品摘要
工程參考資料，適用於 USB2514B-AEZG-TR — 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 | USB2514B-AEZC-TR | USB2514BI-AEZG-TR | USB2514B/M2 | USB2513BI-AEZG-TR | USB2512B-AEZG-TR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-36 (6 x 6 mm, 0.50 mm pitch) | QFN-36 (6 x 6 mm, 0.50 mm pitch) - same | QFN-36 (6 x 6 mm, 0.50 mm pitch) - same | QFN-36, 36S - same | QFN-36 (6 x 6 mm, 0.50 mm pitch) - same | QFN-36 (6 x 6 mm, 0.50 mm pitch) - same |
| Downstream Ports | 4 | 4 | 4 | 4 | 3 | 2 |
| Upstream Port | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 |
| Operating Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Management Interface | I2C | I2C | I2C | I2C | I2C | I2C |
| MultiTRAK Technology | Yes | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- Four downstream USB 2.0 ports in a single 6 x 6 mm QFN-36 footprint (對比USB2512B-AEZG-TR)
- No integrated flash, so no firmware storage overhead in BOM or board area (對比USB2514BI-AEZG-TR)
- MultiTRAK arbitration keeps mixed-speed peripherals responsive (對比USB2513B-AEZG-TR)
- Cost-effective, flash-less ordering code within the same family as the flash-equipped BI version (對比USB2514B/M2)
設計說明
The USB2514B-AEZG-TR lives in a 36-QFN (6 x 6 mm, 0.50 mm pitch) package, so the layout constraint is fanout from a 0.50 mm grid to the USB connector escape geometry. Place the device so that the upstream port pair and at least two downstream pairs can escape on roughly symmetric paths, and keep each 90 ohm differential pair routed over a continuous reference plane without a plane split underneath the pair. Use the USB2514B reference schematic and evaluation board layout as the routing baseline, and preserve the same relative placement of the decoupling network and the I2C management pull-ups.
Estimated: the hub itself plus four downstream ports must be sourced from the single 3.3 V rail. If each downstream port is allowed 100 mA of enumerated USB 2.0 load and the hub draws a further 50 mA, the rail must deliver roughly 450 mA with margin for inrush; use at least a 600 mA-rated regulator for the hub rail. Place a 0.1 uF ceramic decoupling capacitor at each supply pin and a bulk 1 uF to 4.7 uF ceramic within a few millimetres of the package to absorb USB attach and hot-plug current steps.
Because the USB2514B-AEZG-TR arbitrates a 480 Mbps signal on short board traces, the upstream and downstream pairs are the main aggressors on the board. Avoid routing any other high-speed or switching node parallel to the USB pairs, keep the hub's reference clock away from the differential pair region, and terminate unused downstream port pairs as shown in the datasheet if a connector is not populated. Add common-mode choke or ESD protection at exposed connectors so external cable noise does not couple into the hub's PHY.
Two mistakes recur in designs using this part. First, treating the hub as a host: the upstream port must connect to a host controller, and the operating system must have hub-class driver support enabled, otherwise devices will not enumerate. Second, assuming the commercial 0 to 70 C grade covers hot industrial cabinets or automotive environments; specify the industrial or extended-temperature ordering code of the same USB2514B family instead of relying on the -AEZG-TR suffix. Always verify the downstream port current budget in the datasheet port tables before finalising the power supply design.
合規資訊
RoHS compliance is stated for the USB2514B-AEZG ordering code in the manufacturer and distributor part data. This is a commercial-temperature hub controller and is not an automotive-qualified AEC-Q100 device. REACH, halogen-free status and conflict-minerals declarations are not published in the available part data.
