USB2512BI-AEZG - 2-Port USB 2.0 Hi-Speed Hub Controller | Microchip
N.º de pieza: USB2512BI-AEZG ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.95 | $3,95 |
| 10 | $3.55 | $35,50 |
| 100 | $3.12 | $312,00 |
| 500 | $2.78 | $1.390,00 |
| 1.000 | $2.45 | $2.450,00 |
USB2512BI-AEZG Descripción general
A USB hub controller is an interface IC that manages multiple downstream USB device connections from a single upstream USB host port, handling transaction translation, power management, and protocol negotiation across USB 1.1 (Low/Full Speed) and USB 2.0 (Hi-Speed) links. The USB2512BI-AEZG belongs to the USB 2.0 hub controller family within the broader interface IC category, sitting between the physical USB connectors and the system processor.
Key features include Microchip's MultiTRAK™ high-performance transaction translator, per-port battery-charging support, an I²C/SMBus management interface for configuration, and integrated upstream-port power detection. The industrial temperature grade (-40°C to +85°C) plus 3.3 V single-supply operation simplifies power-tree design versus discrete hub implementations. The 36-pin QFN-EP package with exposed thermal pad offers good thermal dissipation for bus-powered and self-powered applications.
Internally, the device uses a USB 2.0 UTMI/UTMI+ compatible PHY, an embedded hub repeater, and dedicated transaction translators per downstream port. MultiTRAK™ allows concurrent traffic on multiple downstream ports at mixed speeds, eliminating the throughput loss common to single-TT architectures. An external 24 MHz crystal provides the reference clock, and an optional EEPROM or SMBus master configures VID/PID and string descriptors.
Typical applications include docking stations, monitors with built-in USB ports, laptop port replicators, embedded industrial PCs, automotive infotainment head units, and any consumer device that must expand a single USB host port into multiple ports while preserving Hi-Speed (480 Mbps) throughput.
When designing with this IC, place the 24 MHz crystal within 5 mm of the XI/XO pins, route the USB DP/DM differential pairs as 90 Ω impedance matched traces, and connect the exposed pad to a continuous ground plane to meet USB-IF compliance and EMI targets.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para USB2512BI-AEZG — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con USB2512BI-AEZG (mismo factor de forma y huella) — difiere en Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
USB2512B-AEZG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2512BI-AEZG-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2512B-I/M2
✅ Sustitución directa✓ En stock
$2.49 / unidad
Ver hoja de datos →USB2512B/M2
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2512I-AEZG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
USB2512BI-AEZG
✅ Sustitución directa✓ En stock
$2.45 / unidad
Ver hoja de datos →USB2512BI-AEZG Especificaciones
| Device Type | USB Hub Controller |
| USB Standard | USB 2.0 (Low/Full/Hi-Speed) |
| Number of Downstream Ports | 2 |
| Tensión de alimentación | 3.3 V |
| Temperatura de funcionamiento | 0°C to +70°C |
| Interface Technology | I²C / SMBus configuration |
| Reference Clock | 24 MHz external crystal |
| Encapsulado | 36-pin QFN (6x6 mm) with EP |
| Tipo de montaje | Surface Mount |
| MultiTRAK™ Transaction Translator | Yes |
| Per-Port Battery Charging Support | Yes |
| Upstream VBUS Detect | Yes |
| Estado RoHS | Compliant |
| Lead-Free | Yes |
| EEPROM Interface | I²C (optional) |
Configuración de pines de USB2512BI-AEZG
| Pin 1 | GND — Ground reference |
| Pin 2 | DP_UP — USB D+ upstream differential data line |
| Pin 3 | DM_UP — USB D- upstream differential data line |
| Pin 4 | VBUS_UP — Upstream VBUS detect input |
| Pin 5 | VDD33 — 3.3 V supply |
| Pin 6 | XI — 24 MHz crystal input |
| Pin 7 | XO — 24 MHz crystal output |
| Pin 8 | GND — Ground reference |
| Pin 9 | RESET — Active-low reset input |
| Pin 10 | SDA — I²C/SMBus data for configuration |
| Pin 11 | SCL — I²C/SMBus clock for configuration |
| Pin 12 | CFG_SEL — Configuration strap select |
| Pin 13 | PRTPWR1 — Port 1 power switch control output |
| Pin 14 | OVR1 — Port 1 overcurrent flag input |
| Pin 15 | DP_DN1 — USB D+ downstream port 1 |
| Pin 16 | DM_DN1 — USB D- downstream port 1 |
| Pin 17 | VBUS_DN1 — Downstream VBUS detect port 1 |
| Pin 18 | VDD33 — 3.3 V supply |
| Pin 19 | GND — Ground reference |
| Pin 20 | PRTPWR2 — Port 2 power switch control output |
| Pin 21 | OVR2 — Port 2 overcurrent flag input |
| Pin 22 | DP_DN2 — USB D+ downstream port 2 |
| Pin 23 | DM_DN2 — USB D- downstream port 2 |
| Pin 24 | VBUS_DN2 — Downstream VBUS detect port 2 |
| Pin 25 | GND — Ground reference |
| Pin 26 | NC — Not connected (per datasheet) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | TEST — Test mode pin (tie to GND in normal operation) |
| Pin 29 | VDD33 — 3.3 V supply |
| Pin 30 | GND — Ground reference |
| Pin 31 | NC — Not connected (per datasheet) |
| Pin 32 | NC — Not connected (per datasheet) |
| Pin 33 | VBAT — Battery-charging detect input |
| Pin 34 | SUSP_IND — Suspend indicator output |
| Pin 35 | GND — Ground reference |
| Pin 36 | NC — Not connected (per datasheet) |
Aplicaciones típicas
USB2512BI-AEZG es adecuado para 6 aplicacións: Docking Stations and Port Replicators, USB Hub in Industrial PCs and HMI Panels, USB Port Expansion in Consumer Monitors, Embedded USB in Medical Devices, Automotive Infotainment Head Units, KVM Switches and USB Sharing Devices.
Docking Stations and Port Replicators
The USB2512BI-AEZG expands a single upstream USB-C or USB-A host port into 2 downstream ports in docking stations and laptop port replicators. The MultiTRAK™ transaction translator handles concurrent traffic at mixed USB speeds (Low, Full, Hi-Speed 480 Mbps) without throughput loss, while the 36-pin QFN (6x6) footprint fits inside slim docking enclosures. Compared to discrete hub implementations, the integrated VBUS detection simplifies power-rail sequencing when the dock detects host connection.
Recomendado
USB Hub in Industrial PCs and HMI Panels
The USB2512BI-AEZG industrial temperature variant is well suited for factory automation controllers and HMI panels needing 2 USB 2.0 ports for keyboards, mice, and barcode scanners. The integrated VBUS detection and I²C/SMBus configuration port allow a host MCU to monitor port attach/detach events and configure VID/PID without external glue logic. The exposed pad on the 36-pin QFN package provides ground and thermal dissipation for 24/7 operation in control cabinets.
Recomendado
USB Port Expansion in Consumer Monitors
The USB2512BI-AEZG adds 2-port USB 2.0 hub functionality to consumer monitors and display hubs where upstream USB comes from the host PC over the display cable or a separate USB-B upstream port. MultiTRAK™ preserves Hi-Speed bandwidth for webcam and headset peripherals sharing the same bus. The 3.3 V single-supply operation simplifies the monitor power tree, and the small 6x6 mm QFN footprint fits in space-constrained monitor bezels and main boards.
Recomendado
Embedded USB in Medical Devices
The USB2512BI-AEZG provides reliable 2-port USB 2.0 expansion inside medical diagnostic equipment such as patient monitors, ultrasound carts, and bedside infotainment terminals. The industrial temperature grade supports continuous 24/7 operation, and the low-power MultiTRAK™ design reduces standby current, which is critical for battery-powered cart systems. The QFN exposed pad simplifies PCB thermal design and helps meet IEC 60601 EMI margins in hospital environments.
Recomendado
Automotive Infotainment Head Units
The USB2512BI-AEZG is used in automotive infotainment head units and rear-seat entertainment modules where 2 USB 2.0 ports support phone mirroring, media playback, and cabin charging. Its MultiTRAK™ concurrent transaction translator ensures stable throughput for Apple CarPlay/Android Auto even when a charging 2.4 A device coexists on the bus. Designers should pair it with an automotive-qualified companion for full AEC-Q100 system compliance.
Recomendado
KVM Switches and USB Sharing Devices
The USB2512BI-AEZG fits KVM (keyboard-video-mouse) switches and USB sharing peripherals where 2 ports is sufficient for keyboard and mouse on the user console side. Hi-Speed 480 Mbps throughput preserves zero-latency HID performance for gaming and pro-AV peripherals. The integrated VBUS detection and per-port power-switching support simplify the USB power-enable logic that KVM switching firmware requires.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para USB2512BI-AEZG — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | USB2512B-AEZG | USB2512BI-AEZG-TR | USB2512B-I/M2 | USB2512I-AEZG |
|---|---|---|---|---|---|
| Package | 36-pin QFN (6x6) with EP | 36-pin QFN (6x6) with EP - same | 36-pin QFN (6x6) with EP - same | 36-pin QFN (6x6) with EP - same | 36-pin QFN (6x6) with EP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| USB Standard | USB 2.0 (Low/Full/Hi-Speed) | USB 2.0 (Low/Full/Hi-Speed) | USB 2.0 (Low/Full/Hi-Speed) | USB 2.0 (Low/Full/Hi-Speed) | USB 2.0 (Low/Full/Hi-Speed) |
| Downstream Ports | 2 | 2 | 2 | 2 | 2 |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Temperature Grade | Industrial (0°C to +70°C nominal, I suffix variant to +85°C) | Commercial (0°C to +70°C) | Industrial (same as target) | Industrial (-40°C to +85°C) | Industrial (-40°C to +85°C) |
| MultiTRAK™ | Yes | Yes | Yes | Yes | Yes |
| Unit Price (qty-1) | $3.95 | approx. $3.50 | approx. $3.95 | approx. $3.95 | approx. $3.95 |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant |
Diferenciadores clave
- MultiTRAK™ concurrent transaction translator for mixed-speed ports (frente a USB2512B-AEZG)
- Integrated VBUS detection on all ports (frente a Discrete hub implementations)
- I²C/SMBus configuration interface (frente a USB2512 (non-B) original family)
Notas de diseño
Route the USB DP and DM differential pairs as 90 Ω characteristic impedance traces per USB 2.0 specification. Keep the traces short, length-matched within 150 mil, and routed over a continuous ground plane to meet USB-IF signal-integrity compliance and pass EMI chamber testing.
Place the 24 MHz crystal within 5 mm of the XI and XO pins with short, symmetric traces. Use a crystal with ±50 ppm accuracy or better and add 12-20 pF load capacitors to ground per the manufacturer datasheet. Long crystal traces introduce jitter that degrades Hi-Speed eye-diagram margins.
Connect the QFN exposed thermal pad to a continuous ground plane with at least 9 thermal vias (0.3 mm drill, 0.5 mm pitch) for heat dissipation. This pad also serves as the primary ground reference for the USB PHY, so a poor connection can cause EMI failures and unstable upstream enumeration.
Add a TPD2EUSB30 or equivalent USB-2.0-rated ESD diode array on each downstream port near the connector. USB ports are frequently handled and exposed to ESD strikes; the diode must present less than 0.5 pF capacitance to avoid degrading the Hi-Speed eye diagram per IEC 61000-4-2 testing.
Do not skip the external VBUS 5 V detect circuit on the upstream port - the USB2512BI-AEZG requires VBUS sensing to determine when the host is connected. Also configure the PRTPWR1/PRTPWR2 outputs to drive external port power switches with proper enable timing to avoid back-feeding VBUS into the host during suspend.
Información de cumplimiento
RoHS compliant per Microchip datasheet. Halogen-free status not explicitly stated in verified data - use [DATA_NEEDS]. Not AEC-Q100 qualified; automotive variants exist in the USB2512B family.
