7 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, as well as validating and testing their design

implementation to confirm system functionality.

7.1 Application Information

The TS3USB3031 is a passive, bidirectional, 2-channel 1:3 switch that can be used in many high speed

1:3 switching applications. This device was designed originally for USB 2.0 and Mobile High-Definition Link

applications but can be used for general signal switching applications such as I2C, UART, LVDS, and so forth.

7.2 Typical Application

Figure 7-1 represents a typical application of the TS3USB3031 MHL switch. The TS3USB3031 is used to switch

signals between the two sets of USB paths, which go to either the baseband or application processor, and the

MHL path, which goes to the HDMI to MHL bridge. The TS3USB3031 has internal 6-MΩ pulldown resistors

on SEL0 and SEL1. The pulldown on SEL0 and SEL1 ensure the USB1 channel is selected by default. The

TS5A3157 is a separate SPDT switch that is used to switch between the MHL CBUS and the USB ID line that is

required for USB OTG (USB On-The-Go) application.

MicroUSB

Connector

D+

D-

USB_D+

HDMI

V

BAT

To

Battery

Charger

VBUS

ID

GND

VCC

USB_D-

ID_USB

GPO2

GPO1

USB_D+

USB_D-

Baseband or

Application

Processor

USB 2.0

Application

Processor

MHL+

MHL-

CBUS

HDMI to

MHL Bridge

GND

D+

D-

USB1+

USB1-

TS3USB3031

MHL+

MHL-

SEL1

SEL2

USB2+

USB2-

GND

COM

TS5A3157

Copyright © 2016, Texas Instruments Incorporated

Figure 7-1. Typical TS3USB3031 Application

www.ti.com

TS3USB3031

SCDS348D – SEPTEMBER 2013 – REVISED AUGUST 2024

Copyright © 2024 Texas Instruments Incorporated

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Product Folder Links: TS3USB3031