USB 3.0 Host Controller
USB 2.0 Hub
USB 2.0 Connection
USB 3.0 Connection
USB 2.0/3.0 Device
USB 3.0 Device
USB 2.0 Device
USB 3.0 System Implementation
USB 1.x Device
USB 1.x Connection
Not Recommended for New Designs
SLLSE42I – SEPTEMBER 2010 – REVISED SEPTEMBER 2013
The TUSB8040 is USB 3.0 compliant hub available in an 80-pin QFP package. The device is designed for
operation over the commercial temperature range of 0°C to 70°C.
The TUSB8040 provides simultaneous SuperSpeed and high-speed/full-speed connections on the
upstream port and provides SuperSpeed, 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 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 and high-speed connectivity are disabled on the downstream ports.
The TUSB8040 supports up to four downstream ports. It may be configured to report one to four
downstream ports by pin selection or an attached EEPROM or SMBus controller. The configuration
options provide the ability to scale the device by application.
A typical system view of the TUSB8040 is shown in Figure 1-1.
Figure 1-1. Typical Application
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Product Folder Links: TUSB8040