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Texas Instruments TUSB8020BPHPRG4
- Part No.:
- TUSB8020BPHPRG4
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 48-PowerTQFP
- Datasheet:
-
TUSB8020BPHPRG4.pdf
- Description:
- TWO-PORT SUPERSPEED 5.0GBPS USB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TUSB8020BPHPRG4 from Texas Instruments is a two-port USB 3.0 compliant hub IC supporting simultaneous SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) connectivity. It features Multi-Transaction Translator (MTT) architecture with two transaction translators, four asynchronous endpoint buffers per translator, and per-port/ganged power switching with overcurrent detection. It enables battery charging via CDP/DCP modes and supports YD/T 1591-2009 compliance - used in docking stations, monitors, and set-top boxes.
For engineers reviewing the TUSB8020BPHPRG4 datasheet, TUSB8020BPHPRG4 pinout, TUSB8020BPHPRG4 application, or TUSB8020BPHPRG4 equivalent, key selection criteria include USB 3.0/2.0 dual-mode operation, MTT hub architecture, battery charging mode configurability (CDP/DCP/AUTOMODE), OTP/I²C/SMBus programmability for VID/PID/port customization, and 48-pin HTQFP thermal performance (RθJA = 31.8°C/W).
Technical Context
The TUSB8020BPHPRG4 implements a USB 3.0 hub controller with independent upstream SuperSpeed and USB 2.0 transceivers, enabling backward compatibility while maintaining full 5-Gbps link capability when upstream is connected to a SuperSpeed host. Its MTT architecture isolates bandwidth between downstream ports during high-speed USB 2.0 traffic, preventing contention.
Power management is implemented via configurable PWRCTL[2:1]/BATEN[2:1] pins and registers (REG_5h, REG_Ah), supporting active-high/low polarity, ganged or per-port switching, and overcurrent reporting through dedicated OVERCUR1z/OVERCUR2z inputs. Battery charging logic operates autonomously based on VBUS status, autoModeEnz register state, and strap pin configuration - without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 3.0 (SuperSpeed) and USB 2.0 (high/full/low-speed) compliant; certified USBIF TID#330000057. |
| Data Rates | Upstream: 5 Gbps (SS) + 480 Mbps (HS); Downstream: up to 5 Gbps per port depending on upstream capability. |
| Hub Architecture | Multi-Transaction Translator (MTT) with two TTs and four async endpoint buffers per TT - enables concurrent HS transfers across ports. |
| Power Supply | VDD = 1.1 V ±10% (1.26 V max), VDD33 = 3.3 V (3.0–3.6 V); typical active current: 93 mA @ 3.3 V / 364 mA @ 1.1 V (3.0 host + 1 SS + 1 HS device, U0). |
| Battery Charging | CDP mode (upstream connected), DCP mode (upstream unconnected, YD/T 1591-2009 compliant), and AUTOMODE with divider-mode fallback (5 W or 10 W configurable). |
| Configuration Interface | OTP ROM, I²C EEPROM, or SMBus slave interface for VID/PID, port removability, manufacturer/product strings, and serial number. |
| Clock Input | 24-MHz fundamental-mode crystal (12–24 pF load, ≤50 Ω ESR) or external oscillator (±100 ppm stability, ≤50 ps pk-pk jitter). |
Pinout & Package
Package: 48-pin HTQFP (PHP), 7.00 mm × 7.00 mm, exposed thermal pad. RoHS-compliant, commercial temperature range (0°C to 70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| USB_SSTXP_UP / USB_SSTXM_UP | Upstream SuperSpeed differential transmitter | Drives 5-Gbps differential signal to host; requires controlled 90-Ω impedance routing. |
| USB_SSRXP_UP / USB_SSRXM_UP | Upstream SuperSpeed differential receiver | Receives 5-Gbps differential signal from host; integrated termination enables direct connection. |
| USB_DP_UP / USB_DM_UP | Upstream USB 2.0 differential transceiver | Full-speed/high-speed bidirectional signaling; supports legacy host compatibility. |
| PWRCTL1/BATEN1 / PWRCTL2/BATEN2 | Port power control & battery enable | Configurable active-high/low output to drive external power switches; sampled at reset to configure BC mode per port. |
| OVERCUR1z / OVERCUR2z | Downstream overcurrent detection input | Active-low interrupt indicating overcurrent event; in ganged mode, either pin triggers hub-level fault reporting. |
| SCL/SMBCLK / SDA/SMBDAT | I²C/SMBus configuration interface | Programmable VID/PID, port settings, and strings; SMBUSz pin selects I²C vs SMBus protocol mode. |
| GRSTz | Global power-on reset | Asynchronous active-low reset; must be held low ≥3 ms after VDD/VDD33 stabilization per power-up timing spec. |
| FULLPWRMGMTz / GANGED / PWRCTL_POL | Power management configuration straps | Hardware-configured hub behavior: full power management enable, ganged vs per-port switching, and PWRCTL polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Transaction Translator (MTT) | Two independent transaction translators with four async endpoint buffers each - eliminates bandwidth contention between downstream USB 2.0 devices. |
| Flexible Battery Charging Modes | CDP (host-connected), DCP (host-unconnected, YD/T 1591-2009 compliant), and AUTOMODE with configurable divider-mode (5 W or 10 W) - no host driver required. |
| Triple Configuration Options | One-time programmable (OTP) ROM, I²C EEPROM, or SMBus slave interface - enables field-updatable VID/PID, port removability, and custom strings. |
| Ganged or Per-Port Power Control | Hardware-strapped (GANGED pin) or register-controlled (REG_5h) selection - supports both individual port isolation and shared power switch designs. |
| Single-Crystal Clock Architecture | 24-MHz crystal or oscillator input with internal PLL - eliminates need for multiple clock sources while meeting USB 3.0 jitter requirements (≤50 ps pk-pk). |
Applications
| Computer Docking Stations | USB-C Monitors with Hub Functionality |
|---|---|
Use Scenario: A compact docking station connects laptop via USB-C (Alt Mode) and expands to two USB 3.0 peripherals (SSD + webcam), one USB 2.0 peripheral (keyboard), and provides 15W charging. IC Role / Device Role / Timing Role: TUSB8020BPHPRG4 acts as the embedded USB 3.0 hub controller managing upstream SuperSpeed negotiation and downstream port arbitration, including BC 1.2-compliant charging handshaking. Use Value: Enables single-cable docking with simultaneous 5-Gbps data + 480-Mbps auxiliary traffic + standardized charging - no additional USB 2.0 hub IC required. |
Use Scenario: A 4K monitor integrates USB 3.0 hub functionality to support peripheral attachment (mouse, flash drive) while receiving video via DisplayPort Alt Mode over USB-C. IC Role / Device Role / Timing Role: TUSB8020BPHPRG4 serves as the USB 3.0 hub controller handling upstream DP Alt Mode enumeration and downstream port power management, including automatic DCP mode activation when host is disconnected. Use Value: Eliminates need for separate USB 2.0 hub and charging IC - reduces BOM count and PCB area while maintaining full USB 3.0 bandwidth to attached SSDs. |
| Set-Top Box Peripheral Expansion | Industrial Embedded USB Hub Module |
Use Scenario: A cable set-top box adds two downstream USB ports for external HDD recording and Bluetooth adapter, requiring stable low-power suspend/resume and overcurrent protection. IC Role / Device Role / Timing Role: TUSB8020BPHPRG4 functions as the USB hub controller with per-port power switching (PWRCTL1/2), OVERCUR1z/2z monitoring, and U1/U2 link-state support for low-power operation. Use Value: Provides hardware-enforced overcurrent isolation and sub-50 mA suspend current - meets CE/UL safety and energy efficiency requirements for consumer AV equipment. |
Use Scenario: An industrial HMI panel uses TUSB8020BPHPRG4 to add two ruggedized USB ports for barcode scanner and printer, operating continuously in 0–70°C ambient with firmware-updatable VID/PID. IC Role / Device Role / Timing Role: TUSB8020BPHPRG4 operates as the field-programmable USB hub controller with I²C EEPROM-based VID/PID storage and thermal-aware layout (exposed pad, RθJA = 31.8°C/W). Use Value: Enables OEM-specific USB device identification and long-term supply continuity - avoids host-side driver conflicts during field upgrades or product revisions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.0 hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB3503-AEZG | Single-chip USB 3.0 hub with integrated USB 2.0 PHY; no external crystal required (internal oscillator); supports only I²C configuration (no OTP/SMBus). | Targeted at cost-sensitive, space-constrained designs where crystal BOM reduction is prioritized over field reprogrammability. | Select USB3503-AEZG when eliminating crystal layout complexity and reducing component count outweighs need for OTP-based VID/PID customization. |
| TUSB8041IRGCR | Four-port USB 3.0 hub in 64-pin QFN; identical MTT architecture, same battery charging modes, but larger package and higher active current (120 mA @ 3.3 V). | Suitable for systems requiring >2 downstream ports without cascading hubs - increases PCB area and thermal footprint. | Select TUSB8041IRGCR only when expanding beyond two downstream ports is mandatory and thermal headroom permits higher power dissipation. |
Compared with USB3503-AEZG, TUSB8020BPHPRG4 offers OTP-based permanent configuration and crystal flexibility but requires external clock components; compared with TUSB8041IRGCR, it delivers identical feature depth in half the port count and 30% lower thermal load - ideal for compact, thermally constrained two-port applications.
Availability
TUSB8020BPHPRG4 is available at Aetrix Electronics and suitable for computer docking stations, USB-C monitors, and set-top box peripheral expansion requiring stable component supply, long-lifecycle availability, and production-ready USB 3.0 hub functionality.
Supply support for TUSB8020BPHPRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity solutions, with leadership in USB interface ICs since the USB 1.1 era.
The TUSB8020BPHPRG4 belongs to TI's USB 3.0 hub product line, designed specifically for compact, low-power, and field-configurable embedded hub applications - emphasizing MTT architecture, battery charging compliance, and flexible configuration interfaces.
FAQ
What USB speed modes does the TUSB8020BPHPRG4 support on its upstream and downstream ports?
The TUSB8020BPHPRG4 supports SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) on all ports. Upstream always supports simultaneous SuperSpeed and USB 2.0; downstream speeds depend on upstream capability - SuperSpeed is disabled if upstream connects only to USB 2.0 hosts, and both SuperSpeed and high-speed are disabled if upstream connects only to USB 1.x hosts. This behavior is automatic and requires no software configuration.
Does the TUSB8020BPHPRG4 require an external crystal, and what are the key specifications for that crystal?
Yes, the TUSB8020BPHPRG4 requires a 24-MHz fundamental-mode crystal connected to XI/XO pins. The crystal must have 12–24 pF load capacitance, ±100 ppm frequency stability, and ≤50 Ω equivalent series resistance (ESR). A 1-MΩ feedback resistor between XI and XO is mandatory. Alternatively, a 24-MHz oscillator may be used - in which case XO is left floating and XI is driven by the oscillator's 1.8-V output.
How does battery charging work on the TUSB8020BPHPRG4, and what standards does it comply with?
The TUSB8020BPHPRG4 supports three battery charging modes: CDP (Charging Downstream Port) when upstream is connected, DCP (Dedicated Charging Port) when upstream is unconnected and compliant with YD/T 1591-2009, and AUTOMODE - which automatically selects between DCP and divider-mode (5 W or 10 W configurable) based on attached device. AUTOMODE is enabled by default and disables CDP; CDP only activates when autoModeEnz = 0 in register REG_Ah.
Can the TUSB8020BPHPRG4 be configured without firmware or host interaction?
Yes, the TUSB8020BPHPRG4 supports hardware-based configuration via strap pins (FULLPWRMGMTz, GANGED, PWRCTL_POL, SMBUSz, BATEN1/2) for power management mode, battery charging enable, and I²C/SMBus selection. Additionally, OTP ROM allows permanent storage of VID/PID and port settings - enabling fully autonomous operation without host driver involvement or runtime configuration.
What thermal considerations apply to the TUSB8020BPHPRG4 in a 48-pin HTQFP package?
The TUSB8020BPHPRG4 in HTQFP (PHP) package has a junction-to-ambient thermal resistance (RθJA) of 31.8°C/W. To maintain reliable operation within its 0°C to 70°C commercial temperature range, the PCB must incorporate the exposed thermal pad connected to a solid copper pour with ≥6 thermal vias to inner ground planes. Power dissipation must stay below 1.2 W under worst-case active conditions (e.g., two SuperSpeed devices in U0 state).
TUSB8020BPHPRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-PowerTQFP
- Programmable:
- -
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- USB, GPIO, I2C, SMBus
- Standards:
- USB 2.0, USB 3.0
- Voltage - Supply:
- 0.99V ~ 1.26V, 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Supplier Device Package:
- 48-HTQFP (7x7)
- Grade:
- -
- Qualification:
- -
TUSB8020BPHPRG4 FAQ
1.How can I place an order for TUSB8020BPHPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB8020BPHPRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TUSB8020BPHPRG4 reliable?
The price and inventory of TUSB8020BPHPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB8020BPHPRG4 is usually 5 days.
3.What payment methods are accepted for TUSB8020BPHPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB8020BPHPRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB8020BPHPRG4?
TUSB8020BPHPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB8020BPHPRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TUSB8020BPHPRG4?
For technical support, including TUSB8020BPHPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB8020BPHPRG4 requirements.
6.How does Aetrix verify that TUSB8020BPHPRG4 is sourced from the original manufacturer or authorized distributors?
All TUSB8020BPHPRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TUSB8020BPHPRG4 meets industry standards.
7.What is the process for return or replacement of TUSB8020BPHPRG4?
All TUSB8020BPHPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TUSB8020BPHPRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TUSB8020BPHPRG4 part is unused and in its original packaging.
Return procedure for TUSB8020BPHPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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