HD3SS3411 Datasheet, PDF (7/21 Pages) Texas Instruments – One Channel Differential 2:1 Mux/Demux

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7 Detailed Description
HD3SS3411
SLASEB6 – NOVEMBER 2015
7.1 Overview
The HD3SS3411 is a high-speed bi-directional passive switch in mux or demux configurations. Based on control
pin SEL, the device switches one differential channels between Port B or Port C to Port A.
The HD3SS3411 is a generic 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. The device employs an adaptive tracking that ensures the channel
remains unchanged for entire common mode voltage range.
Table 1. MUX Pin Connections⁽¹⁾
PORT A CHANNEL
Ap
An
PORT B OR PORT C CHANNEL CONNECTED TO PORT A
CHANNEL
SEL = L
SEL = H
Bp
Cp
Bn
Cn
(1) The HD3SS3411 can tolerate polarity inversions for all differential signals on Ports A, B and C. Care
should be taken to ensure the same polarity is maintained on Port A vs. Port B/C.
7.2 Functional Block Diagram
VCC
Bp
Bn
Ap
An
Cp
Cn
SEL
GND
7.3 Feature Description
7.3.1 Output Enable and Power Savings
The HD3SS3411 has two power modes, normal operating mode and shutdown mode. During shutdown mode,
the device consumes very-little current to save the maximum power. The OEn control pin is used to toggle
between the two modes.
HD3SS3411 consumes < 2 mW of power when operational and has a shutdown mode exercisable by the OEn
pin resulting < 20 µW.
Copyright © 2015, Texas Instruments Incorporated
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