GND

Top View

RUA

Package

A2+

C1+

A2-

C2+

A1+

C2-

C3+

C3-

A0-

VDD

VDD

NC

SEL

GND

B2-

B1+

B1-

B3+

B3-

NC

GND

VDD

GND

B0+

B0-

NC

B2+

C1-

A0+

C0+

C0-

A1-

A3+

A3-

HD3SS3415

www.ti.com

SLAS840 – MARCH 2012

4-Channel High-Performance Differential Switch

Check for Samples: HD3SS3415

1

FEATURES

•

Compatible with Multiple Interface Standards

Operating up to 12Gbps Including PCI Express

Gen III and USB 3.0

•

Wide –3dB Differential BW of over 8GHz

•

Excellent Dynamic Characteristics (at 4GHz)

–

Crosstalk = –35dB

–

Off Isolation = –19dB

–

Insertion Loss = –1.5dB

–

Return Loss = –11dB

•

VDD Operating Range 3.3 V ±10%

•

Small 3.5 mm x 9.0 mm, 42-Pin TQFN Package

•

Common Industry Standard Pinout

APPLICATIONS

•

Desktop and Notebook PCs

•

Server/Storage Area Networks

•

PCI Express Backplanes

•

Shared I/O Ports

Figure 1. HD3SS3415 Pinout & Switch Flow

Through Routing

DESCRIPTION

The HD3SS3415 is a high-speed passive switch capable of switching four differential channels, including

applications such as two full PCI Express x1 lanes from one source to one of two target locations in a PC/server

application. With its bidirectional capability the HD3SS3415 will also support applications that allow connections

between one target and two source devices, such as a shared peripheral between two platforms. The

HD3SS3415 has a single control line (SEL Pin) which can be used to control the signal path between Port A and

either Port B or Port C.

The HD3SS3415 is offered in an industry standard 42-pin QFN package available in a common footprint shared

by several other vendors. The device is specified to operate from a single supply voltage of 3.3V over the full

industrial temperature range of –40°C to 85ºC

The HD3SS3415 is a generic 4-CH high speed mux/demux type of switch that can be used for routing high-

speed signals between two different locations on a circuit board. Although it was designed specifically to address

PCI Express Gen III applications, the HD3SS3415 will also support several other high-speed data protocols with

a differential amplitude of <1800mVpp and a common mode voltage of <2.0V, as with USB 3.0 and DisplayPort

1.2. The device’s one select input (SEL) pin can easily be controlled by an available GPIO pin within a system or

from a micro-controller.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.