USB2514I-AEZG - 4-Port USB 2.0 Hub Controller | Microchip
料号： USB2514I-AEZG ✓ 量产中USB2514I-AEZG 概述
A USB hub controller is a dedicated interface integrated circuit that manages traffic between one USB host and multiple downstream USB devices. In the product hierarchy, a USB 2.0 hub controller is a USB interface controller, a USB interface IC, and ultimately a semiconductor designed for connectivity and power-management functions. Multi-transaction-translator technology allows the hub to schedule overlapping USB transactions, improving throughput when several downstream devices transmit data at the same time.
Key attributes include four downstream ports, USB 2.0 high-speed support, a 36-QFN package, and a specified supply range of 3.0 V to 3.6 V. The supply current listed for the device is 130 mA, which must be considered alongside hub-current-advertisement requirements and the power budget of attached downstream loads. Configuration is handled through a serial EEPROM interface, allowing firmware-defined settings to be loaded when the hub is initialized.
The USB2514I-AEZG is intended for OEM-configurable embedded USB systems where port count, enumeration behavior, and downstream power management must be defined by the product software. Mixed-speed operation is important in designs that combine high-speed storage, printers, or network adapters with full-speed peripherals such as keyboards, mice, and human-interface devices. The controller separates the upstream link from each downstream port and manages transaction arbitration across those links.
Typical uses include USB expansion in industrial control panels, multifunction printers, external storage enclosures, POS terminals, set-top equipment, and test systems. The 6 x 6 mm QFN package also supports compact PCB layouts, although its exposed thermal pad and high-speed differential routing require careful layout planning. USB signal integrity, reference-clock routing, EEPROM access, and port-power switching are the primary implementation concerns.
When designing the hub, follow the reference schematic and layout guidance in the manufacturer datasheet. Route the upstream and downstream high-speed pairs as controlled-impedance differential nets, place support components close to their associated pins, and provide a continuous ground reference beneath the exposed pad. Confirm the external EEPROM address and programming sequence before releasing a PCB for production.
This page organizes the USB2514I-AEZG technical profile, verified drop-in candidates, application guidance, and practical layout notes in one engineering-focused reference. It is intended to accelerate part selection, schematic review, PCB planning, and sourcing for engineers designing four-port USB 2.0 hub products.
直接替换替代料： USB2514I-AEZG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： USB2514I-AEZG （相同外形与封装尺寸） ——差异在于 Number of Downstream Ports, Package, Product Type, Battery Charging Support, Configuration Interface.
USB2514BI-AEZG-TR
✅ 直接替换联系询价
查看数据手册 →USB2514I-HZH
✅ 直接替换联系询价
查看数据手册 →USB2514BT-I/M2
✅ 直接替换联系询价
查看数据手册 →USB2513B-AEZG
✅ 直接替换联系询价
查看数据手册 →USB2513B-AEZC-TR
✅ 直接替换联系询价
查看数据手册 →USB2514I-AEZG 规格参数
| Product Type | USB 2.0 four-port hub controller |
| Number of Downstream Ports | 4 ports |
| USB Version | USB 2.0 |
| Maximum Data Rate | 480 Mb/s |
| 接口类型 | USB serial interface |
| Configuration Interface | Serial EEPROM |
| Supply Voltage Range | 3.0 V to 3.6 V |
| 电源电流 | 130 mA |
| 封装 | 36-QFN (6 x 6 mm) |
| 安装类型 | Surface mount |
| Technology | Multi-transaction-translator hub controller |
| Port Configuration | OEM-configurable |
| Operating Speed Class | USB high-speed and full-speed |
| RoHS 状态 | Compliant |
| Lifecycle Code | Active |
USB2514I-AEZG 36-qfn (6 x 6 mm) 引脚配置指南
USB2514I-AEZG（36-qfn (6 x 6 mm) 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： USB2514I-AEZG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
USB2514I-AEZG 适用于 6 应用s: Industrial Control Panel USB Expansion, Multifunction Printer and Scanner Hub, External Storage and Media Dock, Point-of-Sale Terminal USB Hub, Set-Top Box and Media Hub, USB Test and Measurement Fixture.
Industrial Control Panel USB Expansion
The USB2514I-AEZG fits an industrial panel that needs to connect a host computer to four USB peripherals through one upstream port. Its four downstream ports and 480 Mb/s USB 2.0 operation support storage, programmers, and data-acquisition adapters without spreading that traffic across multiple host controllers. The controller operates from 3.0 V to 3.6 V and uses a serial EEPROM for product-specific configuration. Place the 36-QFN device beside the upstream connector, keep high-speed traces short, and provide separate load switches for port-current management. The 130 mA controller supply figure must be treated separately from downstream device power, and the enclosure grounding strategy should be reviewed for industrial EMC requirements.
推荐
Multifunction Printer and Scanner Hub
A multifunction printer or scanner can use the USB2514I-AEZG to expose internal modules such as a scanner engine, card reader, status interface, and service port through a single USB 2.0 connection. The four downstream ports provide expansion while the multi-transaction-translator architecture helps the hub manage mixed high-speed and full-speed traffic. Configuration through a serial EEPROM allows port behavior and device descriptions to be established consistently during production. Keep the upstream 480 Mb/s pair routed as a controlled-impedance differential pair, and observe the separation requirements between high-speed, clock, and port-control nets. Confirm the EEPROM content and hub descriptor during firmware bring-up before the product is released to manufacturing.
推荐
External Storage and Media Dock
The USB2514I-AEZG is appropriate for an external storage dock that connects several flash, disk, or card-reader modules to a single host. Four downstream ports and USB high-speed operation up to 480 Mb/s allow multiple storage devices to remain attached while the hub arbitrates their transactions. The compact 36-QFN, 6 x 6 mm package leaves board area for connectors and power circuitry, although the exposed pad must be tied to the ground plane as specified. Use short, matched USB routing and provide separate port-power switches so an unpowered device cannot back-feed a port. The serial EEPROM configuration interface should be programmed for the intended enumeration behavior, and the hub current budget should be reviewed against each storage module's peak demand.
推荐
Point-of-Sale Terminal USB Hub
A point-of-sale terminal often needs more USB connections than the host controller provides, making the USB2514I-AEZG a practical four-port expansion controller. The ports can serve a receipt printer, card reader, barcode scanner, and touchscreen or peripheral interface while sharing one upstream USB link. Mixed-speed support is valuable in POS systems because printer and card-reader peripherals often use full-speed or low-speed USB while data-transfer devices may require high speed. The controller's 3.0 V to 3.6 V supply range and compact surface-mount package integrate cleanly into a dense terminal PCB. Maintain short upstream routing, isolate noisy power switches, and validate the configured descriptors against the peripherals used in every supported POS configuration.
推荐
Set-Top Box and Media Hub
The USB2514I-AEZG can expand USB connectivity in a set-top box or media hub that needs to attach a keyboard, storage accessory, network adapter, and service device. The four downstream ports reduce the need for a host with multiple native USB controllers, while 480 Mb/s operation accommodates high-speed storage traffic. Because the system may combine a switching power supply with sensitive data paths, the USB data routing should remain tightly coupled and isolated from switching nodes. The controller's exposed thermal pad should connect to a quiet ground plane, and the external EEPROM should contain verified product descriptors. Validate suspend, resume, and hot-plug behavior across every supported peripheral because these interactions are central to consumer-device reliability.
推荐
USB Test and Measurement Fixture
The USB2514I-AEZG is useful in a USB test fixture that needs to expose several device classes through a common host-side connection. Four ports can accommodate a high-speed analyzer, a mass-storage target, a full-speed peripheral, and a power or enumeration monitor. The multi-transaction-translator behavior permits several devices to exchange data concurrently, making the hub useful for realistic workload testing rather than simple point-to-point checks. Its 36-QFN package requires careful thermal-pad assembly, and the USB data pairs should be routed with consistent impedance and adequate ground reference. Use the manufacturer configuration sequence to program the serial EEPROM, and include port-disconnect and over-current handling so the fixture can reproduce real device-removal behavior.
推荐
推荐产品汇总
工程参考数据： USB2514I-AEZG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | USB2514BI-AEZG-TR | USB2514I-HZH | USB2514BT-I/M2 | USB2513B-AEZG | USB2513B-AEZC-TR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 36-QFN (6 x 6 mm) | 36-QFN (6 x 6 mm) | 36-QFN (6 x 6 mm) | 36-QFN (6 x 6 mm) | 36-QFN (6 x 6 mm) | 36-QFN (6 x 6 mm) |
| Downstream Port Count | 4 ports | 4 ports | 4 ports | 4 ports | 3 ports (-25%) | 3 ports (-25%) |
| USB Version | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 |
| Maximum Data Rate | 480 Mb/s | 480 Mb/s | 480 Mb/s | 480 Mb/s | 480 Mb/s | 480 Mb/s |
| Controller Technology | USB251x multi-transaction-translator controller | USB2514B MultiTRAK family | USB2514I multi-transaction-translator family | USB2514B MultiTRAK family | USB2513B MultiTRAK family | USB2513B MultiTRAK family |
关键差异点
- Direct four-port fit for an existing USB2514I design （对比 USB2513B-AEZG)
- Established USB251x multi-transaction-translator architecture （对比 USB2514BT-I/M2)
- Compact 36-QFN integration （对比 USB2514BI-AEZG-TR)
设计说明
Route the upstream and downstream USB high-speed pairs as short, coupled differential nets on a continuous ground reference. Keep the USB2514I-AEZG close to the upstream connector, maintain the layer geometry specified by the manufacturer layout guidance, and avoid routing these pairs across switching-node copper. Place the exposed-pad vias close to the thermal pad and connect that pad to the quiet ground plane with low-impedance stitching.
Budget the controller's listed 130 mA supply demand separately from the current advertised by each USB downstream port. Use dedicated port-power switches with controlled soft-start behavior and verify that a disconnected or unpowered peripheral cannot back-feed the hub. Place input decoupling close to the supply pins and verify startup behavior across the full 3.0 V to 3.6 V range, including the voltage required to configure the external serial EEPROM.
Do not treat a four-port hub as interchangeable with a three-port controller without checking PCB nets, firmware assumptions, and port-power assignments. The serial EEPROM contents and address must match the hub configuration expected by the firmware. After assembly, test enumeration, suspend and resume, simultaneous high-speed transfers, hot-plug removal, and recovery from a downstream over-current condition before production release.
Confirm the exposed-pad assembly requirements before PCB release, including pad dimensions, solder-mask opening, paste stencil, and the number and placement of thermal vias. A QFN package with an inadequately connected thermal pad can develop hot spots during sustained downstream traffic. Complete the manufacturer-recommended solder-reflow profile and inspect the underside for voids that could impair both heat transfer and ground continuity.
合规信息
RoHS-compliant status is associated with the USB2514I-AEZG listing. Automotive qualification, halogen-free status, and conflict-minerals declarations are not established for this ordering variant.
