HD3SS214

SLAS907 – DECEMBER 2015

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8 Detailed Description

8.1 Overview

The HD3SS214 is an analog, differential passive switch that can work for any high speed interface applications,

as long as it is biased at a common mode voltage range of 0 V to 2 V and has differential signaling with

differential amplitude up to 1800 mVpp.

NOTE

HD3SS214 MUX does not provide common mode biasing for the channel. Therefore, it is

required that the device is biased from either side for all active channels.

In high-speed applications and data paths, signal integrity is an important concern. The switch offers excellent

dynamic performance such as high isolation, crosstalk immunity, and minimal bit-bit skew. These characteristics

allow the device to function seamlessly in the system without compromising signal integrity. The 2:1/1:2, mux/de-

mux device operates with ports A or B switched to port C, or port C switched to either port A or B. This flexibility

allows an application to select between one of two Sources on ports A and B and send the output to the sink on

port C. Similarly, a Source on port C can select between one of two Sink devices on ports A and B to send the

data.

The HPD and data signals are both switched through the Dx_SEL pin. AUX and DDC are controlled with

AUX_SEL and Dx_SEL.

With an OE control pin, the HD3SS214 is operational, with low active current, when this pin is high. When OE is

pulled low, the device goes into standby mode and draws very little current in order to save power consumption

in the application.

HD3SS214 high speed MUX channels have independent adaptive common mode tracking allowing four data

paths to have different common mode voltage, simplifying system implementation and avoid inter-op issues.

8

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