TUSB8020BPHPR - 2-Port USB 3.0 Hub 5Gbps | Texas Instruments
MPN: TUSB8020BPHPR ✓ Hoạt độngTUSB8020BPHPR Tóm tắt
A USB hub is a device that expands a single USB host port into multiple downstream ports, allowing several peripherals to share one upstream connection. The TUSB8020B belongs to the USB hub controller product family within the broader interface IC taxonomy (USB hub controller -> interface IC -> integrated circuit -> semiconductor). USB 3.0 hubs operate at 5 Gbps SuperSpeed, which is roughly ten times faster than USB 2.0 high-speed (480 Mbps), and are required to remain backward compatible with USB 2.0 and USB 1.1 devices through dedicated signaling pipelines.
Key features include two downstream ports, full SuperSpeed 5 Gbps support per port, integrated termination and pull-up/pull-down resistors, per-port or ganged power switching control, configurable through I2C/SMBus, and individual port overcurrent detection. The device supports battery charging (BC1.2) detection logic when paired with an external charger IC. Its commercial temperature range of 0C to 70C and HTQFP package make it suitable for consumer docking stations, monitors, and embedded platforms.
The TUSB8020B uses a UTMI/UTMI+ (USB 2.0 Transceiver Macrocell Interface) plus a PIPE (PHY Interface for the PCI Express and USB 3.0 Architectures) physical interface to its internal PHYs, eliminating the need for external PHY components. The hub transaction translator manages bandwidth sharing between USB 2.0 and USB 3.0 traffic streams.
Typical applications include desktop and laptop docking stations, USB 3.0 port expanders, multi-function monitors, embedded system host boards, industrial PCs, and storage enclosures with multiple USB 3.0 connectors.
When designing with this part, provide a 12 MHz crystal or clock reference and follow the USB 3.0 layout guidelines: 90-ohm differential impedance for SuperSpeed pairs, length matching within 150 mil, and continuous reference planes on adjacent layers.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, application circuits, and practical design notes not consolidated on the manufacturer datasheet landing page.
Bộ thay thế dễ dàng lắp đặt cho TUSB8020BPHPR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
TUSB8020BIPHPR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TUSB8020BPHP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TUSB8041AIPHPR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TUSB4041IPHPR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TUSB4020BIPHPR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
USB4604I-1080HN
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TUSB8020BPHPR Thông số kỹ thuật
| Product Type | USB 3.0 Hub Controller |
| Protocol | USB 3.0 |
| Number of Downstream Ports | 2 |
| SuperSpeed Data Rate | 5.0 Gbps |
| Điện áp cung cấp | 1.1 V, 3.3 V |
| Host Interface | USB, GPIO, I2C, SMBus |
| Hộp | HTQFP-48 (PHP) 7x7 mm |
| Số lượng chân | 48 |
| Nhiệt độ hoạt động | 0C to +70C |
| Kiểu lắp đặt | Surface Mount |
| Chức năng | Hub Controller |
| Standards | USB 3.0 |
| Upstream Port Speed | SuperSpeed / High-Speed / Full-Speed simultaneous |
| Downstream Port Speed | SuperSpeed / High-Speed / Full-Speed / Low-Speed |
| Lead Free / RoHS | Yes / Compliant |
Cấu hình chân TUSB8020BPHPR
| Chân 1 | VDD33 — 3.3V supply for I/O and analog blocks |
| Chân 2 | VBUS_DET — Upstream VBUS detection |
| Chân 3 | DP_UP — Upstream USB 2.0 D+ |
| Chân 4 | DM_UP — Upstream USB 2.0 D- |
| Chân 5 | VDD11 — 1.1V core supply |
| Chân 6 | GND — Ground reference |
| Chân 7 | XI — 12 MHz crystal input |
| Chân 8 | XO — 12 MHz crystal output |
| Chân 9 | RESET — Active-low reset input |
| Chân 10 | SDA — I2C/SMBus data |
| Chân 11 | SCL — I2C/SMBus clock |
| Chân 12 | GPIO0 — General purpose I/O 0 |
| Chân 13 | GPIO1 — General purpose I/O 1 |
| Chân 14 | GPIO2 — General purpose I/O 2 |
| Chân 15 | GPIO3 — General purpose I/O 3 |
| Chân 16 | SSRX1_P — Upstream SS receive + |
| Chân 17 | SSRX1_M — Upstream SS receive - |
| Chân 18 | SSTX1_P — Upstream SS transmit + |
| Chân 19 | SSTX1_M — Upstream SS transmit - |
| Chân 20 | VDD11 — 1.1V core supply |
| Chân 21 | GND — Ground reference |
| Chân 22 | DP1_DN1 — Downstream port 1 USB 2.0 data pair |
| Chân 23 | SSRX1A_P — Downstream port 1 SS receive + |
| Chân 24 | SSRX1A_M — Downstream port 1 SS receive - |
| Chân 25 | SSTX1A_P — Downstream port 1 SS transmit + |
| Chân 26 | SSTX1A_M — Downstream port 1 SS transmit - |
| Chân 27 | DP2_DN2 — Downstream port 2 USB 2.0 data pair |
| Chân 28 | SSRX2A_P — Downstream port 2 SS receive + |
| Chân 29 | SSRX2A_M — Downstream port 2 SS receive - |
| Chân 30 | SSTX2A_P — Downstream port 2 SS transmit + |
| Chân 31 | SSTX2A_M — Downstream port 2 SS transmit - |
| Chân 32 | VDD33 — 3.3V supply |
| Chân 33 | GND — Ground reference |
| Chân 34 | PWR_EN1 — Port 1 power switch enable |
| Chân 35 | PWR_EN2 — Port 2 power switch enable |
| Chân 36 | OC1_N — Port 1 overcurrent detect |
| Chân 37 | OC2_N — Port 2 overcurrent detect |
| Chân 38 | VBUS1 — Port 1 VBUS monitor |
| Chân 39 | VBUS2 — Port 2 VBUS monitor |
| Chân 40 | NC — Not connected (per datasheet) |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | TEST — Test mode (factory only) |
| Chân 43 | VDD33 — 3.3V supply |
| Chân 44 | GND — Ground reference |
| Chân 45 | RBIAS — Bias resistor for internal reference |
| Chân 46 | VDD11 — 1.1V core supply |
| Chân 47 | GND — Ground reference |
| Chân 48 | EP — Exposed thermal pad - tie to GND |
Ứng dụng tiêu biểu
TUSB8020BPHPR phù hợp cho 6 Áp dụngs: Laptop and Desktop Docking Station, USB 3.0 Port Expander / Splitter, Multi-Function Monitor with USB Hub, Embedded System / Single-Board Computer USB Expansion, USB 3.0 Storage Enclosure / NAS, Industrial PC and Test Equipment Backplane.
Laptop and Desktop Docking Station
The TUSB8020BPHPR is a strong fit for laptop and desktop docking stations because it provides two SuperSpeed 5 Gbps downstream ports while supporting simultaneous USB 2.0/3.0 traffic on the upstream port. According to TI's reference design, the upstream SS+HS lanes connect to the dock's Type-C or Type-A upstream connector while the two downstream ports drive Type-A SS connectors and internal USB 2.0 endpoints such as Ethernet, audio, or storage. The I2C/SMBus interface allows the dock MCU to configure per-port power switching and BC1.2 charging behavior, eliminating external charger ICs for basic charging profiles. HTQFP-48 package with exposed thermal pad supports continuous 5 Gbps operation in enclosed dock chassis.
Được đề xuất
USB 3.0 Port Expander / Splitter
The TUSB8020BPHPR fits USB 3.0 port expanders and splitter boxes because each downstream port runs full 5 Gbps SuperSpeed independently of upstream load. According to TI's datasheet, the integrated transaction translator manages bandwidth allocation between USB 2.0 and USB 3.0 streams so a low-speed keyboard on port 2 does not throttle a SuperSpeed SSD on port 1. The chip's GPIO-controlled per-port power switching enables individual port enable/disable for power budget management, and the I2C/SMBus host interface exposes hub descriptors for OS enumeration. Same footprint as TUSB4020B (USB 2.0 only) allows SKU simplification across product lines.
Được đề xuất
Multi-Function Monitor with USB Hub
The TUSB8020BPHPR integrates well into multi-function monitors where the upstream Type-B or Type-C port feeds two downstream ports for keyboard/mouse and webcam/headset peripherals. According to TI's application notes, the monitor's scalar board typically uses one downstream port for an internal webcam and one for an external Type-A user port, both running at SuperSpeed when the host supports it. The 0C to 70C operating range covers monitor chassis thermals under normal ambient, while the GPIO-driven backlight coordination can leverage the same I2C bus. HTQFP-48 7x7 mm package keeps the hub footprint small enough for monitor PCBAs.
Được đề xuất
Embedded System / Single-Board Computer USB Expansion
The TUSB8020BPHPR is ideal for embedded SBCs and industrial PCs needing two additional USB 3.0 ports off a limited onboard hub controller. According to TI's reference schematics, the chip connects to the SoC's USB 3.0 host lanes and exposes 5 Gbps downstream ports for camera, RFID reader, or SSD peripherals. The I2C/SMBus interface allows the SoC to read hub status and configure port power, simplifying firmware implementation. The HTQFP-48 footprint matches common 4-layer SBC layouts and the 0C-70C range suits indoor industrial enclosures without active cooling.
Được đề xuất
USB 3.0 Storage Enclosure / NAS
The TUSB8020BPHPR supports USB 3.0 storage enclosures by providing two SuperSpeed ports for dual-drive SSD or HDD bays. According to TI's documentation, each SS port delivers up to 5 Gbps theoretical throughput, sufficient to feed a single SATA III SSD at 6 Gbps with realistic USB 3.0 protocol overhead. The hub's per-port overcurrent detection protects downstream drives from backplane shorts, while the GPIO-driven activity LEDs can be muxed through the same I2C bus. The HTQFP-48 footprint is compatible with compact 2.5-inch enclosure PCBs.
Được đề xuất
Industrial PC and Test Equipment Backplane
The TUSB8020BPHPR fits industrial PCs and test equipment backplanes that need deterministic USB 3.0 expansion for measurement probes or instruments. According to TI's datasheet, the industrial version (TUSB8020BIPHPR) extends the operating range to -40C to +85C for factory floor environments. The hub's downstream ports feed isolated USB connections for data acquisition modules, while the upstream port carries high-throughput streams back to the controller. The HTQFP-48 package footprint is drop-in compatible with TI's TUSB4041IPHPR for higher port counts.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TUSB8020BPHPR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TUSB8020BIPHPR | TUSB8020BPHP | TUSB8041AIPHPR | TUSB4041IPHPR | TUSB4020BIPHPR | USB4604I-1080HN |
|---|---|---|---|---|---|---|---|
| Package | HTQFP-48 (PHP) 7x7 mm | HTQFP-48 (PHP) 7x7 mm - same | HTQFP-48 (PHP) 7x7 mm - same | HTQFP-48 (PHP) 7x7 mm - same | HTQFP-48 (PHP) 7x7 mm - same | HTQFP-48 (PHP) 7x7 mm - same | HTQFP-48 (PHP) 7x7 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Number of Downstream Ports | 2 | 2 | 2 | 4 | 4 | 2 | 4 |
| SuperSpeed Support | Yes (5 Gbps) | Yes (5 Gbps) | Yes (5 Gbps) | Yes (5 Gbps) | Yes (5 Gbps) | No (USB 2.0 only) | No (USB 2.0 only) |
| Operating Temperature | 0C to +70C | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Supply Voltage | 1.1V, 3.3V | 1.1V, 3.3V | 1.1V, 3.3V | 1.1V, 3.3V | 1.1V, 3.3V | 1.1V, 3.3V | 1.1V, 3.3V |
| Host Interface | USB, GPIO, I2C, SMBus | USB, GPIO, I2C, SMBus | USB, GPIO, I2C, SMBus | USB, GPIO, I2C, SMBus | USB, GPIO, I2C, SMBus | USB, GPIO, I2C, SMBus | USB, GPIO, I2C, SMBus |
| Lifecycle Status | Active | Active | Active | Active | Active | Active | Active |
| Approx Unit Price (qty 1) | $6.73 | $7.20 | $6.50 | $8.50 | $7.80 | $4.50 | $5.10 |
Bảo phân biệt quan trọng
- True USB 3.0 SuperSpeed 5 Gbps per port (vsTUSB4020BIPHPR)
- Integrated I2C/SMBus host interface (vsUSB4604I-1080HN)
- Same HTQFP-48 footprint across TI TUSB80xx family (vsTUSB8041AIPHPR)
Ghi chú thiết kế
Estimated: Route the SuperSpeed differential pairs (SSRX/SSTX) with 90-ohm differential impedance and length matching within 150 mil per the USB 3.0 specification. Use a continuous reference plane on layer 2 below the SS traces, and keep the high-speed pairs at least 4x trace spacing from other signals. The exposed thermal pad (pin 48) MUST be soldered to a thermal pad with multiple vias for heat dissipation, even at moderate traffic loads.
The TUSB8020BPHPR requires two supplies: 1.1V (core) and 3.3V (I/O and analog). Place 1uF X7R ceramic decoupling capacitors within 2 mm of each VDD11 and VDD33 pin, plus a 10uF bulk capacitor near the regulator. Tie RBIAS (pin 45) to ground through a 12.1 kohm 1% resistor. The chip can source up to 900 mA per downstream port when paired with external power switches - verify the 3.3V regulator can handle SS enumeration surge currents.
Do not leave NC pins truly floating if your PCB layout uses them as test pads - they MUST be left open per datasheet. The XI/XO crystal must be a 12 MHz fundamental-mode type with 16 pF load capacitance. Do not substitute a 48 MHz oscillator - the internal PLL derives all USB clocks from the 12 MHz reference. The RESET pin is active-low and requires a minimum 1 ms pulse after both supplies are stable.
Keep the upstream SS+HS pair trace length under 2 inches from the upstream connector to minimize signal loss. Use a common-mode choke (e.g., ACM2012) on each SS pair at the connector side for EMI mitigation. The I2C/SMBus pull-up resistors (typically 4.7 kohm to 3.3V) should be located near the TUSB8020BPHPR side of the bus, not at the controller side, to ensure clean rise times.
Thông tin tuân thủ
RoHS and lead-free confirmed per TI product page and DigiKey listing. Halogen-free status not explicitly stated in verified data. AEC-Q100 not applicable for commercial-grade USB hub IC; industrial TUSB8020BIPHPR variant also not AEC-Q100 qualified.
