SCDS256A October 2009 – September 2016 TS3USB31E
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Application Information
- 8 Parameter Measurement Information
- 9 Detailed Description
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
10 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
10.1 Application Information
The TS3USB31E device is used to isolate a USB bus when it is not in use to prevent two different USB devices from interfering with each other.
10.2 Typical Application
Figure 13. Application Diagram
10.2.1 Design Requirements
Design requirements of the USB 1.0, 1.1, and 2.0 standards must be followed. TI recommends that the digital control pin OE be pulled up to VCC or down to ground to avoid undesired switch positions that could result from the floating pin.
10.2.2 Detailed Design Procedure
The TS3USB31E can be properly operated without any external components. However, it is recommended that unused pins be connected to ground through a 50-Ω resistor to prevent signal reflections back into the device.
The N.C pin must be left floating.
10.2.3 Application Curves
Figure 14. Eye Pattern: 480-Mbps USB Signal with No Switch (Through Path)
Figure 15. Eye Pattern: 480-Mbps USB Signal with Switch NO Path