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Texas Instruments TUSB4020BIPHPG4
- Part No.:
- TUSB4020BIPHPG4
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 48-PowerTQFP
- Datasheet:
-
TUSB4020BIPHPG4.pdf
- Description:
- TWO-PORT HIGH-SPEED 480MBPS USB
- Quantity:
- Payment:
- Shipping:
Inventory:2,398
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Product details
Overview
TUSB4020BIPHPG4 from Texas Instruments is a two-port USB 2.0 hub IC with Multi-Transaction Translator (MTT) architecture, supporting high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) USB connectivity on downstream ports, integrated battery charging support (CDP/DCP/AUTOMODE), and configurable per-port or ganged power switching - deployed in docking stations and industrial monitors requiring robust USB expansion with Type-C compatibility.
For engineers reviewing the TUSB4020BIPHPG4 datasheet, TUSB4020BIPHPG4 pinout, TUSB4020BIPHPG4 application, or TUSB4020BIPHPG4 equivalent, key selection criteria include MTT-based bandwidth isolation, dual-mode battery charging compliance (YD/T 1591-2009), OTP/I²C/SMBus programmability for VID/PID/custom strings, 48-pin HTQFP package thermal performance (RθJA = 31.8°C/W), and industrial temperature operation (–40°C to 85°C).
Technical Context
The TUSB4020BIPHPG4 implements a dual-transaction-translator (MTT) hub architecture, enabling independent bandwidth allocation per downstream port and preventing single-device saturation from blocking other port traffic. It integrates dedicated hardware for USB Battery Charging Specification v1.2 CDP handshaking and DCP mode compliant with YD/T 1591-2009, including automatic divider-mode detection.
Configuration is supported via OTP ROM, I²C EEPROM (100 kbps, address 0x50), or SMBus target interface (address 0x88–0x8F), allowing runtime customization of VID/PID, port removability, battery charging enablement, and high-current divider settings. Power management supports active-high or active-low PWRCTL polarity, selectable at reset via PWRCTL_POL pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | Upstream: HS/FS/LS; Downstream: HS/FS/LS - enables backward-compatible expansion behind legacy or modern hosts. |
| Transaction Translators | Two independent MTTs - isolates bandwidth per downstream port, avoiding contention between connected peripherals. |
| Battery Charging Modes | CDP (upstream-connected), DCP (upstream-unconnected, YD/T 1591-2009 compliant), AUTOMODE (auto-selects divider/DCP) - eliminates need for external BC controllers. |
| Supply Voltages | VDD = 0.99–1.26 V (1.1 V nominal); VDD33 = 3.0–3.6 V - requires dual-rail LDO design with tight regulation tolerance. |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded systems and uncooled monitor/dock deployments. |
| Package | 48-pin HTQFP (PHP), 9 mm × 9 mm, exposed thermal pad - supports >1.5 W dissipation with PCB copper pour and thermal vias. |
| ESD Rating | HBM ±4000 V, CDM ±1500 V - meets IEC 61000-4-2 Level 4 system-level ESD robustness requirements. |
Pinout & Package
Package: 48-pin HTQFP (PHP), 9 mm × 9 mm body with exposed thermal pad (GND). Thermal resistance RθJA = 31.8°C/W; RθJC(bot) = 0.9°C/W - requires soldered thermal pad and ≥6 thermal vias for sustained 60 mA/port operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GRSTz (11) | Global Reset Input | Active-low asynchronous reset; must be held low ≥3 ms after VDD/VDD33 stabilization - controls all internal register states and USB enumeration readiness. |
| USB_DP_UP / USB_DM_UP (26, 27) | Upstream Differential Pair | HS/FS/LS bidirectional transceiver interface to host controller - requires 90 Ω differential impedance and common-mode choke for EMI suppression. |
| USB_DP_DN1 / USB_DM_DN1 (41, 42) USB_DP_DN2 / USB_DM_DN2 (14, 15) |
Downstream Differential Pairs | Two independent HS/FS/LS transceivers - each supports separate termination, ESD protection, and VBUS sensing per port. |
| PWRCTL1/BATEN1 (4) PWRCTL2/BATEN2 (6) |
Port Power/Battery Enable | Configurable as active-high/low port power switch control or battery charging enable - sampled at reset to set batEn[1:0] register bits. |
| OVERCUR1z (5) OVERCUR2z (8) |
Overcurrent Detection Inputs | Open-drain inputs monitoring external power switch fault signals - '0' = overcurrent event; used for per-port or ganged shutdown depending on GANGED pin state. |
| SCL/SMBCLK (2) SDA/SMBDAT (3) |
I²C/SMBus Interface | Selectable via SMBUSz (22): I²C EEPROM (addr 0x50) or SMBus target (addr 0x88–0x8F) - enables field-updatable VID/PID, port config, and string descriptors. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Transaction Translator (MTT) | Two independent transaction translators with four async endpoint buffers each - prevents bandwidth starvation across downstream ports during mixed HS/FS traffic. |
| Type-C Compatibility | Native support for USB Type-C upstream connections without additional level-shifting or protocol translation - simplifies dock and adapter designs. |
| Triple Battery Charging Modes | CDP (host-connected), DCP (standalone, YD/T 1591-2009 compliant), and AUTOMODE (auto-switches between divider/DCP) - replaces discrete BCIC solutions in portable device chargers. |
| Flexible Configuration Interface | OTP ROM, I²C EEPROM, or SMBus target - enables OEM-specific VID/PID, port removability, battery charging enablement, and high-current divider settings without firmware changes. |
| Industrial Temperature Range | –40°C to +85°C operation with validated junction temp limit of 105°C - suitable for fanless industrial monitors and automotive-adjacent docking systems. |
| Single 24 MHz Clock Input | Accepts crystal (XI/XO) or external oscillator on XI only - eliminates need for multiple clock sources and reduces BOM count in space-constrained layouts. |
Applications
| Computer Docking Stations | Industrial Monitors |
|---|---|
Use Scenario: Adds two USB 2.0 ports to a Thunderbolt/USB-C dock while maintaining host-side bandwidth isolation and providing 5 V/900 mA per port with BC support. IC Role / Device Role / Timing Role: USB 2.0 hub controller managing upstream enumeration, downstream port power sequencing, and battery charging negotiation. Use Value: Enables simultaneous connection of keyboard/mouse (FS) and external storage (HS) without throughput degradation due to MTT architecture. |
Use Scenario: Embedded in 24-inch industrial display with USB service port and peripheral expansion for barcode scanners and HID devices. IC Role / Device Role / Timing Role: USB 2.0 hub providing isolated downstream ports with industrial-grade thermal margin and robust ESD immunity. Use Value: Sustains reliable operation at 85°C ambient with RθJA = 31.8°C/W and supports hot-plug detection across temperature extremes. |
| Set-Top Box Expansion | USB-C Monitor Hubs |
Use Scenario: Adds USB host capability to legacy STB platforms via USB 2.0 upstream link, enabling firmware updates via flash drive and peripheral attachment. IC Role / Device Role / Timing Role: USB 2.0 hub bridging SoC USB OTG port to two downstream receptacles with configurable power switching. Use Value: Per-port power control allows selective disabling of unused ports to meet <100 mA standby power targets. |
Use Scenario: Integrated into USB-C monitor with built-in hub functionality, delivering data, video (via DP Alt Mode), and charging through single cable. IC Role / Device Role / Timing Role: USB 2.0 hub handling auxiliary data paths (keyboard, webcam) while main video uses DisplayPort Alt Mode. Use Value: Type-C compatibility and DCP mode enable direct charging of smartphones from monitor's USB-C PD port without host intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 2.0 hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USB2514B-AEZG | Four-port MTT hub; no native DCP/YD/T 1591-2009 support; requires external BCIC for charging; 32-pin QFN package. | Higher port count but lacks integrated battery charging modes - necessitates additional components for CDP/DCP functionality. | Choose when expanding beyond two ports is required and external BCIC integration is acceptable. |
| TUSB2036VFR | Three-port STT (single TT) hub; no MTT; no battery charging support; 48-pin TQFP; 3.3 V only (no 1.1 V rail). | Limited to FS/LS only; no HS support; no charging modes - suitable only for legacy low-bandwidth peripherals. | Choose only for cost-sensitive FS-only applications where bandwidth isolation and charging are unnecessary. |
Compared with USB2514B-AEZG and TUSB2036VFR, the TUSB4020BIPHPG4 uniquely delivers two-port MTT performance with fully integrated, standards-compliant battery charging - reducing BOM count by eliminating external BCICs and enabling compact, thermally efficient 48-pin HTQFP layouts for space-constrained docks and monitors.
Availability
TUSB4020BIPHPG4 is available at Aetrix Electronics and suitable for computer docking stations, industrial monitors, set-top box expansion modules, and USB-C monitor hubs requiring stable component supply, long-term lifecycle assurance, and industrial temperature qualification.
Supply support for TUSB4020BIPHPG4 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 technologies, with leadership in USB interface ICs and industrial-grade signal chain solutions.
The TUSB4020BIPHPG4 belongs to TI's USB 2.0 hub product line, designed specifically for embedded docking, display, and peripheral expansion applications requiring MTT bandwidth isolation, integrated battery charging, and industrial reliability.
FAQ
What USB speed modes does the TUSB4020BIPHPG4 support on its upstream and downstream ports?
The TUSB4020BIPHPG4 supports high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) on its upstream port. Downstream ports support the same three speeds, but high-speed operation is disabled if the upstream port detects only full-speed/low-speed capability. This dynamic speed negotiation ensures backward compatibility without manual configuration - a core behavior of the TUSB4020BIPHPG4 hub logic.
How does the TUSB4020BIPHPG4 implement battery charging, and which standards does it comply with?
The TUSB4020BIPHPG4 implements battery charging via three modes: Charging Downstream Port (CDP) for host-connected scenarios, Dedicated Charging Port (DCP) compliant with YD/T 1591-2009 for standalone charging, and AUTOMODE for automatic selection between divider-mode and DCP. These functions are controlled by registers (REG_6h, REG_Ah) and strap pins (PWRCTL1/BATEN1, PWRCTL2/BATEN2), making the TUSB4020BIPHPG4 self-contained for BC 1.2 and Chinese telecom charging requirements.
Can the TUSB4020BIPHPG4 be configured without external memory, and what options are available?
Yes, the TUSB4020BIPHPG4 supports configuration via one-time programmable (OTP) ROM, I²C EEPROM (100 kbps, address 0x50), or SMBus target interface (addresses 0x88–0x8F). OTP stores VID/PID, port removability, and automode settings; I²C EEPROM enables field-updatable strings and configurations; SMBus allows host-driven runtime register access. All methods avoid firmware dependencies - critical for the TUSB4020BIPHPG4's plug-and-play deployment in headless systems.
What is the role of the GRSTz pin, and what timing requirement applies to it?
The GRSTz pin is the active-low global reset input for the TUSB4020BIPHPG4. It must be held low for a minimum of 3 ms after both VDD (1.1 V) and VDD33 (3.3 V) supplies reach their recommended operating ranges. This ensures complete initialization of internal registers, USB state machines, and PHY calibration. Failure to meet this timing may result in failed enumeration or unstable downstream port behavior - a hard requirement defined in the TUSB4020BIPHPG4 power-up sequence.
Does the TUSB4020BIPHPG4 require special drivers or OS-level support?
No, the TUSB4020BIPHPG4 requires no special drivers and works seamlessly with any operating system that includes standard USB stack support (Windows, Linux, macOS, Android). It enumerates as a USB 2.0 hub class device using standard descriptors, and all advanced features - including MTT operation, battery charging negotiation, and power switching - are handled transparently in hardware. This driverless operation is a defined feature of the TUSB4020BIPHPG4 architecture.
TUSB4020BIPHPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-PowerTQFP
- Programmable:
- -
- Protocol:
- USB
- Function:
- Hub Controller
- Interface:
- I2C, Serial, SMBus
- Standards:
- USB 2.0
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Supplier Device Package:
- 48-HTQFP (7x7)
- Grade:
- -
- Qualification:
- -
TUSB4020BIPHPG4 FAQ
1.How can I place an order for TUSB4020BIPHPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB4020BIPHPG4 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 TUSB4020BIPHPG4 reliable?
The price and inventory of TUSB4020BIPHPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB4020BIPHPG4 is usually 5 days.
3.What payment methods are accepted for TUSB4020BIPHPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB4020BIPHPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB4020BIPHPG4?
TUSB4020BIPHPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB4020BIPHPG4 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 TUSB4020BIPHPG4?
For technical support, including TUSB4020BIPHPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB4020BIPHPG4 requirements.
6.How does Aetrix verify that TUSB4020BIPHPG4 is sourced from the original manufacturer or authorized distributors?
All TUSB4020BIPHPG4 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 TUSB4020BIPHPG4 meets industry standards.
7.What is the process for return or replacement of TUSB4020BIPHPG4?
All TUSB4020BIPHPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TUSB4020BIPHPG4, 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 TUSB4020BIPHPG4 part is unused and in its original packaging.
Return procedure for TUSB4020BIPHPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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