USB2514B-AEZC - 4-Port USB 2.0 Hi-Speed Hub Controller | Microchip
MPN: USB2514B-AEZC ✓ نشطUSB2514B-AEZC نظرة عامة
What is a USB hub controller? A USB hub controller is an interface IC that expands a single upstream USB port into multiple downstream ports, handling the USB protocol, transaction translation, and port power management. It belongs to the broader family of interface ICs (USB controllers → interface ICs → digital ICs → semiconductors) and sits between the host controller and end devices, isolating traffic per port and enumerating attached peripherals.
Key features include USB 2.0 Hi-Speed compliance, integrated 1.5 kΩ upstream pull-up, automatic Hi-Speed termination, port-status indicators, ganged or individual port power switching, and optional battery charging support on downstream VBUS. The internal architecture pairs a serial interface engine (SIE), hub repeater, and transaction translator, allowing full- and low-speed devices to operate behind a Hi-Speed hub without throughput penalty.
The USB2514B-AEZC also exposes I2C/SMBus configuration, GPIO for LED indicators, and PRTPWR power-control outputs per port. Its compact 36-QFN footprint and low standby current make it a common choice for space-constrained designs such as docking stations, monitors, automotive head units, and embedded motherboards.
Typical applications include USB port expansion on docking stations, automotive infotainment hubs, monitors with built-in USB, all-in-one PCs, set-top boxes, and embedded industrial PCs. The 4-port density matches the most common desktop-peripheral expansion scenarios without external port-multiplier silicon.
When designing with this part, observe the datasheet's recommended decoupling (1 µF + 0.1 µF near VBAT and VDD33) and provide a stable 3.3V rail. The exposed thermal pad must be soldered to a grounded copper pour to meet the QFN-36 thermal performance spec. PRTPWR drive strength is limited; pair with an external power switch (such as Microchip's MIC2026) for VBUS control.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
بدائل مباشرة لـ USB2514B-AEZC — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع USB2514B-AEZC (نفس عامل الشكل والبصمة) — يختلف في Package.
USB2514B-AEZC-TR
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
USB2514B-AEZG
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
USB2514B-I/M2
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←USB2512B-AEZC
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
USB2517B-AEZC
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
USB2514B-AEZC المواصفات
| الوظيفة | USB 2.0 Hi-Speed 4-Port Hub Controller |
| USB Standard | USB 2.0 (Low/Full/Hi-Speed) |
| Number of Downstream Ports | 4 |
| Maximum Signaling Rate | 480 Mbps (Hi-Speed) |
| Supply Voltage (VDD33) | 3.0 V to 3.6 V |
| Battery Charging Support | Yes (per downstream port, via external switch) |
| Configuration Interface | I2C / SMBus |
| Port Power Control | PRTPWR outputs per port |
| العلبة | 36-pin QFN (6x6 mm) with exposed pad |
| نوع التركيب | Surface Mount |
| MultiTRAK Technology | Yes (per-port transaction translator) |
| درجة حرارة التشغيل | 0C to +70C (commercial) |
| مستوى MSL | 3 (168 hours) |
| حالة RoHS | Compliant |
| Lead-Free | Yes |
تكوين أطراف USB2514B-AEZC
| دبوس 1 | DP_UP — Upstream USB D+ data line |
| دبوس 2 | DN_UP — Upstream USB D- data line |
| دبوس 3 | VDD33 — 3.3 V supply for digital core |
| دبوس 4 | VBAT — Battery / 5 V tolerant supply for wake-up logic |
| دبوس 5 | SDA — I2C/SMBus data (configuration) |
| دبوس 6 | SCL — I2C/SMBus clock (configuration) |
| دبوس 7 | RESET — Active-low hardware reset |
| دبوس 8 | XTALIN — 24 MHz crystal input |
| دبوس 9 | XTALOUT — 24 MHz crystal output |
| دبوس 10 | PRTPWR1 — Port 1 power control output (active-high) |
| دبوس 11 | PRTPWR2 — Port 2 power control output (active-high) |
| دبوس 12 | PRTPWR3 — Port 3 power control output (active-high) |
| دبوس 13 | PRTPWR4 — Port 4 power control output (active-high) |
| دبوس 14 | DP_DN1 — Downstream port 1 D+ data line |
| دبوس 15 | DN_DN1 — Downstream port 1 D- data line |
| دبوس 16 | DP_DN2 — Downstream port 2 D+ data line |
| دبوس 17 | DN_DN2 — Downstream port 2 D- data line |
| دبوس 18 | DP_DN3 — Downstream port 3 D+ data line |
| دبوس 19 | DN_DN3 — Downstream port 3 D- data line |
| دبوس 20 | DP_DN4 — Downstream port 4 D+ data line |
| دبوس 21 | DN_DN4 — Downstream port 4 D- data line |
| دبوس 22 | OC1 — Port 1 overcurrent sense input (active-low) |
| دبوس 23 | OC2 — Port 2 overcurrent sense input (active-low) |
| دبوس 24 | OC3 — Port 3 overcurrent sense input (active-low) |
| دبوس 25 | OC4 — Port 4 overcurrent sense input (active-low) |
| دبوس 26 | GND — Ground |
| دبوس 27 | TEST — Factory test pin (tie to GND in production) |
| دبوس 28 | GPIO1 — General-purpose I/O / LED indicator |
| دبوس 29 | GPIO2 — General-purpose I/O / LED indicator |
| دبوس 30 | GPIO3 — General-purpose I/O / LED indicator |
| دبوس 31 | GPIO4 — General-purpose I/O / LED indicator |
| دبوس 32 | NC — Not connected (per datasheet) |
| دبوس 33 | NC — Not connected (per datasheet) |
| دبوس 34 | NC — Not connected (per datasheet) |
| دبوس 35 | NC — Not connected (per datasheet) |
| دبوس 36 | EP — Exposed thermal pad - solder to grounded copper pour |
التطبيقات النموذجية
USB2514B-AEZC مناسب لـ 7 التطبيقs: USB Docking Station Port Expansion, USB Monitor Hub (Display + USB-A), Automotive Infotainment USB Hub, Set-Top Box / Streaming Device USB Expansion, Embedded Industrial PC USB Ports, All-In-One Desktop Motherboard USB Headers, USB Port-Expansion Test Fixture.
USB Docking Station Port Expansion
The USB2514B-AEZC's 4 downstream ports and 480 Mbps Hi-Speed support make it the canonical hub silicon for laptop docking stations where one upstream USB-C or USB-A port must be expanded into multiple peripheral ports (USB-A, keyboard, mouse, Ethernet adapter dongle). The IC's MultiTRAK architecture prevents full-/low-speed devices from throttling the entire bus, so a low-speed keyboard does not degrade a Hi-Speed SSD's throughput. Place the hub downstream of the dock's USB-C billboard or PD controller, with 1 µF plus 0.1 µF decoupling on VDD33 and the exposed pad tied to a 25 mm² copper pour. Pair with a per-port MIC2026 power switch for VBUS control.
موصى به
USB Monitor Hub (Display + USB-A)
Modern monitors integrate a 4-port USB hub to drive the downstream USB-A ports on the side or back panel. The USB2514B-AEZC's 36-QFN footprint fits the slim monitor's rear-panel PCB, and its low standby current is critical for ENERGY-STAR idle compliance. The IC enumerates cleanly when the monitor wakes from sleep and supports ganged power switching so the entire hub powers down with the display. Use the I2C configuration interface to strap port-mapping and disable unused ports to reduce quiescent draw.
موصى به
Automotive Infotainment USB Hub
Although the standard USB2514B-AEZC is commercial grade, the same USB2514B family (with -I or automotive suffixes) is widely designed into automotive head units and rear-seat entertainment modules to provide 4 USB charging/data ports for passenger devices. MultiTRAK keeps throughput stable even when multiple phones enumerate simultaneously. The hub sits behind the head-unit's main SoC USB port and feeds front and rear-seat USB-A jacks. For automotive temperature grade, specify the USB2514B-I/M2 industrial variant or an AEC-Q100 qualified family member instead of the -AEZC.
موصى به
Set-Top Box / Streaming Device USB Expansion
Set-top boxes and streaming sticks frequently need extra USB ports for external storage, wireless dongles, or keyboards. The USB2514B-AEZC's small 36-QFN (6x6 mm) package fits within the slim chassis, and its integrated transaction translator maintains Hi-Speed throughput when low-speed IR keyboards or full-speed Bluetooth dongles are attached. The downstream ports also support battery-charging detection so the hub can deliver up to 1.5 A to charge connected phones and tablets without a separate charging IC.
موصى به
Embedded Industrial PC USB Ports
Industrial panel PCs, HMIs, and factory automation controllers integrate 2-4 USB-A ports for programming, configuration, and data-logging peripherals. The USB2514B-AEZC provides Hi-Speed USB isolation from the host SoC's USB port, and its commercial temperature grade suits most factory-floor enclosures. Pair with a downstream port-power switch and TVS array (such as USBLC6-2SC6) to meet IEC 61000-4-2 ESD on exposed USB-A jacks. Use the SMBus configuration to lock port-remap registers so field technicians cannot accidentally re-enumerate attached drives.
موصى به
All-In-One Desktop Motherboard USB Headers
All-in-one desktop motherboards integrate the USB2514B-AEZC to expand the chipset's limited USB ports into the side-panel USB-A jacks. The IC's QFN footprint fits behind the side-panel connector cluster, and its battery-charging support enables fast-charge of phones and tablets from the side jacks even when the PC is in sleep. The I2C configuration allows the BIOS to map side-panel ports to specific functions, including wake-on-USB for keyboard support.
موصى به
USB Port-Expansion Test Fixture
Test and validation labs use the USB2514B-AEZC in port-multiplier test fixtures to expose 4 ports simultaneously to compliance and stress test equipment. The hub's per-port PRTPWR outputs allow automated test software to individually power-cycle each port and measure enumeration timing. The I2C/SMBus configuration interface simplifies scripting under Linux or Windows because the hub's registers map to standard USB hub class descriptors plus Microchip-specific extensions.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ USB2514B-AEZC — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | USB2514B-AEZC-TR | USB2514B-AEZG | USB2514B-I/M2 | USB2512B-AEZC | USB2517B-AEZC |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 36-QFN (6x6 mm) | 36-QFN (6x6 mm) - same | 36-QFN (6x6 mm) - same | 36-SQFN (4x4 mm) - smaller | 36-QFN (6x6 mm) - same | 36-QFN (6x6 mm) - same |
| Number of Ports | 4 | 4 | 4 | 4 | 2 (-50%) | 7 (+75%) |
| USB Standard | USB 2.0 Hi-Speed | USB 2.0 Hi-Speed | USB 2.0 Hi-Speed | USB 2.0 Hi-Speed | USB 2.0 Hi-Speed | USB 2.0 Hi-Speed |
| Maximum Signaling Rate | 480 Mbps | 480 Mbps | 480 Mbps | 480 Mbps | 480 Mbps | 480 Mbps |
| Operating Temperature | 0C to +70C | 0C to +70C | 0C to +70C | -40C to +85C | 0C to +70C | 0C to +70C |
| Bond Wire Material | Copper | Copper | Gold | Copper | Copper | Copper |
| MultiTRAK Technology | Yes | Yes | Yes | Yes | Yes | Yes |
أبرز الفروقات
- MultiTRAK per-port transaction translator (مقابلUSB2513B-AEZC)
- Higher port density in same footprint (مقابلUSB2512B-AEZC)
- Industrial-temp variant available in family (مقابلUSB2514B-AEZC standard)
ملاحظات التصميم
Place 1 µF X7R plus 0.1 µF X7R ceramic decoupling capacitors within 5 mm of the VDD33 and VBAT pins to meet USB 2.0 Hi-Speed signal-integrity requirements. The 3.3 V rail must hold within ±5% under worst-case load steps of 100 mA. Add a 4.7 µF bulk capacitor on the upstream VBUS to support inrush during downstream-port hot-plug events. Connect the exposed thermal pad to a continuous grounded copper pour (≥25 mm²) to provide both thermal relief and a low-impedance ground reference for the differential data pairs.
Route the upstream and downstream D+/D- pairs as 90 Ω differential traces with matching within 150 mils to maintain Hi-Speed signal integrity. Keep total trace length under 50 mm and avoid routing across plane splits. Place the 24 MHz crystal within 5 mm of XTALIN/XTALOUT with a grounded guard ring; stray capacitance on the crystal pins degrades frequency accuracy. USB connectors should be within 25 mm of the hub's DP/DN pins to minimize stub reflections. Add a USBLC6-2SC6 or equivalent ESD array on each exposed USB-A jack to meet IEC 61000-4-2 ±8 kV contact discharge.
Do not omit the 24 MHz crystal: the USB2514B-AEZC has no internal oscillator and will not enumerate if XTALIN is floating. Tie the TEST pin (pin 27) to GND in production - leaving it floating can put the part in factory-test mode. PRTPWR outputs are 3.3 V logic, not 5 V VBUS - always pair with an external power switch (such as MIC2026-1YM) before connecting to downstream VBUS. Overcurrent-sense (OC1-4) pins are active-low and require pull-ups to 3.3 V; floating OCs will false-trip on power-up. The exposed thermal pad MUST be soldered; dry-jointed EPs cause thermal shutdown at modest loads.
Keep D+/D- pairs on the same routing layer without vias; if vias are unavoidable, place them symmetrically in both lines to maintain 100 Ω differential impedance. Reference the high-speed traces to a continuous ground plane on the adjacent layer - do not route over plane splits or near noisy power traces. The I2C/SMBus configuration lines (SDA/SCL) should be pulled up to 3.3 V with 4.7 kΩ resistors and routed away from the D+/D- pairs to avoid coupling into the USB signals. Place the hub IC close to the upstream USB connector to minimize stub length on the upstream pair.
معلومات الامتثال
RoHS and REACH compliant per Microchip product page; commercial temperature grade (not AEC-Q100 qualified); for AEC-Q100 automotive applications, use an AEC-qualified variant within the USB2514B family.
