D+

USB+

MHL+

Control

Logic

SEL

/OE

D-

USB-

MHL-

TS3USB3000

TS3USB3000

SCDS337B – DECEMBER 2012 – REVISED DECEMBER 2015

www.ti.com

8 Detailed Description

8.1 Overview

The TS3USB3000 device is a 2-channel SPDT switch specially designed for the switching of high-speed MHL

and USB 2.0 and 3.0 signals in handset and consumer applications, such as cell phones, digital cameras, and

notebooks with hubs or controllers with limited USB I/Os. The wide bandwidth (6.1 GHz) of this switch allows

signals to pass with minimum edge and phase distortion. The device multiplexes differential outputs from a USB

host device to one of two corresponding outputs or from one USB connector to two processors or controllers.

The switch is bidirectional and offers little or no attenuation of the high-speed signals at the outputs. The device

also has a low power mode that will reduce the power consumption to 5

μA for portable applications with a

battery or limited power budget.

The device is designed for low bit-to-bit skew and high channel-to-channel noise isolation, and is compatible with

various standards, such as high-speed USB 2.0 (480 Mbps).

The TS3USB221A device integrates ESD protection cells on all pins, is available in a tiny UQFN package

(2 mm × 1.5 mm) and is characterized over the free-air temperature range from –40°C to 85°C.

8.2 Functional Block Diagram

8.3 Feature Description

8.3.1 Low Power Mode

The TS3USB3000 has a low power mode that reduces the power consumption to 5

μA while the device is not in

use. To put the device in low power mode and disable the switch, the bus-switch enable pin OE must be

supplied with a logic High signal.

8.3.2 Overvoltage Protection When 9-V Short to D– Pin

This section describes how to protect the TS3USB3000 and the surrounding system when the D– pin is exposed

to voltages greater than 5-V and less than 9-V. Voltages higher than 9-V damages the device.

In charging applications it is possible for the USB plug to be inserted in such a way that the VBUS pin shorts to

the D- pin of the connector. If there are peripherals on the D- pin that cannot tolerate conditions up to 9-V they

can be damaged or destroyed. The TS3USB3000 can be used to protect the system from excess voltage if the

correct precautions are taken.

10

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