USB2512BI-AEZG - 2-Port USB 2.0 Hi-Speed Hub Controller | Microchip
MPN: USB2512BI-AEZG ✓ AktifUSB2512BI-AEZG Ringkasan
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.
Alternatif penggantian untuk USB2512BI-AEZG — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian USB2512BI-AEZG (sama faktor bentuk dan footprint) — berbeda di dalam Package, Number of Downstream Ports, RoHS Status, Product Type, Battery Charging Support.
USB2512B-AEZG
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
USB2512BI-AEZG-TR
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
USB2512B-I/M2
✅ Drop-InKontak untuk harga
Lihat Datasheet →USB2512B/M2
✅ Drop-InKontak untuk harga
Lihat Datasheet →USB2512I-AEZG
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
USB2512BI-AEZG
✅ Drop-InKontak untuk harga
Lihat Datasheet →USB2512BI-AEZG Spesifikasi
| Device Type | USB Hub Controller |
| USB Standard | USB 2.0 (Low/Full/Hi-Speed) |
| Number of Downstream Ports | 2 |
| Tegangan Pemuat | 3.3 V |
| Suhu Kerja | 0°C to +70°C |
| Interface Technology | I²C / SMBus configuration |
| Reference Clock | 24 MHz external crystal |
| Paket | 36-pin QFN (6x6 mm) with EP |
| Tipe Mounting | Surface Mount |
| MultiTRAK™ Transaction Translator | Yes |
| Per-Port Battery Charging Support | Yes |
| Upstream VBUS Detect | Yes |
| Status RoHS | Compliant |
| Lead-Free | Yes |
| EEPROM Interface | I²C (optional) |
Konfigurasi Pin USB2512BI-AEZG
| Pin produk 1 | GND — Ground reference |
| Pin produk 2 | DP_UP — USB D+ upstream differential data line |
| Pin produk 3 | DM_UP — USB D- upstream differential data line |
| Pin produk 4 | VBUS_UP — Upstream VBUS detect input |
| Pin produk 5 | VDD33 — 3.3 V supply |
| Pin produk 6 | XI — 24 MHz crystal input |
| Pin produk 7 | XO — 24 MHz crystal output |
| Pin produk 8 | GND — Ground reference |
| Pin produk 9 | RESET — Active-low reset input |
| Pin produk 10 | SDA — I²C/SMBus data for configuration |
| Pin produk 11 | SCL — I²C/SMBus clock for configuration |
| Pin produk 12 | CFG_SEL — Configuration strap select |
| Pin produk 13 | PRTPWR1 — Port 1 power switch control output |
| Pin produk 14 | OVR1 — Port 1 overcurrent flag input |
| Pin produk 15 | DP_DN1 — USB D+ downstream port 1 |
| Pin produk 16 | DM_DN1 — USB D- downstream port 1 |
| Pin produk 17 | VBUS_DN1 — Downstream VBUS detect port 1 |
| Pin produk 18 | VDD33 — 3.3 V supply |
| Pin produk 19 | GND — Ground reference |
| Pin produk 20 | PRTPWR2 — Port 2 power switch control output |
| Pin produk 21 | OVR2 — Port 2 overcurrent flag input |
| Pin produk 22 | DP_DN2 — USB D+ downstream port 2 |
| Pin produk 23 | DM_DN2 — USB D- downstream port 2 |
| Pin produk 24 | VBUS_DN2 — Downstream VBUS detect port 2 |
| Pin produk 25 | GND — Ground reference |
| Pin produk 26 | NC — Not connected (per datasheet) |
| Pin produk 27 | NC — Not connected (per datasheet) |
| Pin produk 28 | TEST — Test mode pin (tie to GND in normal operation) |
| Pin produk 29 | VDD33 — 3.3 V supply |
| Pin produk 30 | GND — Ground reference |
| Pin produk 31 | NC — Not connected (per datasheet) |
| Pin produk 32 | NC — Not connected (per datasheet) |
| Pin produk 33 | VBAT — Battery-charging detect input |
| Pin produk 34 | SUSP_IND — Suspend indicator output |
| Pin produk 35 | GND — Ground reference |
| Pin produk 36 | NC — Not connected (per datasheet) |
Aplikasi Umum
USB2512BI-AEZG cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk USB2512BI-AEZG — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- MultiTRAK™ concurrent transaction translator for mixed-speed ports (vsUSB2512B-AEZG)
- Integrated VBUS detection on all ports (vsDiscrete hub implementations)
- I²C/SMBus configuration interface (vsUSB2512 (non-B) original family)
Catatan Desain
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.
Informasi Konformitas
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.
