Product details


Function USB3 USB speed (Mbps) 5000 Supply voltage (V) 1.1, 3.3 Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 open-in-new Find other USB hubs & controllers

Package | Pins | Size

VQFN (RGC) 64 81 mm² 9 x 9 open-in-new Find other USB hubs & controllers


  • Four port USB 3.2 x1 Gen1 (5 Gbps) hub
  • USB 2.0 hub features
    • Multi transaction translator (MTT) hub: four transaction translators
    • Two asynchronous endpoint buffers per transaction translator
  • Supports battery charging:
    • Supports D+/D- divider charging port (ACP1, ACP2, and ACP3) when the upstream port is unconnected or not configured
    • Supports automatic mode for transition between DCP or ACP modes when the upstream port is unconnected
    • Supports galaxy charging
    • CDP mode (upstream port connected)
    • DCP mode (upstream port unconnected)
    • DCP mode complies with chinese telecommunications industry standard YD/T 1591-2009
  • Supports Operation as a USB 3.2 x1 Gen1 or USB 2.0 Compound Device
  • Per port or ganged power switching and over-current notification inputs
  • Supports four external downstream ports
  • Supports vendor requests to read and write I2C and EEPROM read at 100 k
  • I2C master supports clock stretching
  • OTP ROM, Serial EEPROM or I2C/SMBus slave interface for custom configurations:
    • VID and PID
    • Port customizations
    • Manufacturer and product strings (not by OTP ROM)
    • Serial number (not by OTP ROM)
  • Application Feature selection using pin selection or EEPROM or I2C/SMBus slave interface
  • Provides 128-Bit Universally Unique Identifier (UUID)
  • Single clock input, 24-MHz crystal or oscillator
  • Downstream ports configurable to USB2.0 only
  • 64-Pin QFN package (RGC)

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The TUSB8042A is a four-port USB 3.2 x1 Gen1 (5 Gbps) hub. It provides simultaneous SuperSpeed USB and high-speed/full-speed connections on the upstream port and provides SuperSpeed USB, high-speed, full-speed, or low-speed connections on the downstream ports. When the upstream port is connected to an electrical environment that only supports high-speed or full-speed/low-speed connections, SuperSpeed USB connectivity is disabled on the downstream ports.

When the upstream port is connected to an electrical environment that only supports full-speed/low-speed connections, SuperSpeed USB and high-speed connectivity are disabled on the downstream ports.

The TUSB8042A supports per port or ganged power switching and over-current protection, and supports battery charging applications.

An individually port power controlled hub switches power on or off to each downstream port as requested by the USB host. Also when an individually port power controlled hub senses an over-current event, only power to the affected downstream port is switched off.

A ganged hub switches on power to all its downstream ports when power is required to be on for any port. The power to the downstream ports is not switched off unless all ports are in a state that allows power to be removed. Also when a ganged hub senses an over-current event, power to all downstream ports is switched off.

The TUSB8042A downstream ports provide support for battery charging applications by providing Battery Charging Downstream Port (CDP) handshaking support. It also supports a Dedicated Charging Port (DCP) mode when the upstream port is not connected. The DCP mode supports USB devices which support with the USB Battery Charging, Galaxy Charging, and Chinese Telecommunications Industry Standard YD/T 1591-2009. In addition when upstream port is unconnected, the TUSB8042A supports the divider charging port modes (ACPx modes) and an automatic transition through all modes, starting with ACP3 and ending in DCP.

The TUSB8042A provides pin strap configuration for some features including battery charging support, and also provides customization though OTP ROM, I2C EEPROM, or via an I2C/SMBus slave interface for PID, VID, and custom port and phy configurations. Custom string support is also available when using an I2C EEPROM or the I2C/SMBus slave interface.

The device is available in a 64-pin RGC package and is offered in a commercial version (TUSB8042A) for operation over the temperature range of 0°C to 70°C, and in an industrial version (TUSB8042AI) for operation over the temperature range of –40°C to 85°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet TUSB8042A Four-port USB 3.2 x1 Gen1 Hub datasheet Jun. 26, 2019
Technical articles 6 key questions when designing for USB protocol interfaces Jul. 30, 2020
Application note Enabling USB Type-C downstream ports for USB3.1 and 3.2 Hubs Dec. 12, 2019
Application note Transition from USB 3.1 Hub to USB 3.2 Hub Mar. 18, 2019
User guide TUSB8044AEVM User's Guide Sep. 27, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

The TUSB8044A evaluation module (EVM) is a functional board design of a single device that implements both a USB 3.2 Gen 1 x 1 hub and a USB 2.0 hub with Billboard. The EVM can support both SuperSpeed (SS) and USB 2.0 (HS, FS, and LS) operation on its USB ports. This EVM is intended for use in (...)
  • Four USB3.2 Gen 1 x 1 downstream ports
  • I2C master controllable through an HID compliant device enumerated on a virtual downstream port
  • Enumerates a Billboard device on a virtual downstream port for Type-C applications with alternate mode support
  • Registers configurable through EEPROM

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)

CAD/CAE symbols

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VQFN (RGC) 64 View options

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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