HD3SS3412 Datasheet, PDF (1/18 Pages) Texas Instruments – 4-Channel High-Performance Differential Switch

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HD3SS3412
SLAS828A – FEBRUARY 2012 – REVISED FEBRUARY 2012
4-Channel High-Performance Differential Switch
Check for Samples: HD3SS3412
FEATURES
1
• 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
GND
A0+
• Excellent Dynamic Characteristics (at 4GHz)
A0-
– Crosstalk = –35dB
GND
– Off Isolation = –19dB
VDD
A1+
– Insertion Loss = –1.5dB
A1-
– Return Loss = –11dB
NC
• VDD Operating Range 3.3 V ±10%
SEL
GND
• Small 3.5 mm x 9.0 mm, 42-Pin TQFN Package
A2+
• Common Industry Standard Pinout
A2-
VDD
APPLICATIONS
GND
A3+
• Desktop and Notebook PCs
A3-
• Server/Storage Area Networks
GND
• PCI Express Backplanes
• Shared I/O Ports
Top View
RUA
Package
GND
Pad
B0+
B0-
B1+
B1-
C0+
C0-
C1+
C1-
VDD
B2+
B2-
B3+
B3-
C2+
C2-
C3+
C3-
Figure 1. HD3SS3412 Pinout & Switch Flow
Through Routing
DESCRIPTION
The HD3SS3412 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 HD3SS3412 will also support applications that allow connections
between one target and two source devices, such as a shared peripheral between two platforms. The
HD3SS3412 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 HD3SS3412 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 HD3SS3412 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 HD3SS3412 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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012–2012 , Texas Instruments Incorporated