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HD3SS3412RUAT UART Interface IC PCI Interface IC 4 Ch Diff Switch
1 Features
Wide –3dB Differential BW of over 8 GHz
Excellent Dynamic Characteristics (at 4 GHz)
– Crosstalk = –35 dB
– Off Isolation = –19 dB
– Insertion Loss = –1.5 dB
– Return Loss = –11 dB
Bidirectional "MUX/De-MUX" Type Differential Switch
VDD Operating Range 3.3 V ±10%
Small 3.5-mm × 9.0-mm, 42-Pin WQFN Package
Common Industry Standard Pinout
Supports XAUI and SGMII
2 Applications
Desktop and Notebook PCs
Server and Storage Area Networks
PCI Express Backplanes
Shared I/O Ports
3 Description
The HD3SS3412 device 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 also supports 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 WQFN package available in a common footprint shared by several other vendors. The device is specified to operate from a single supply voltage of 3.3 V over the full temperature range of -40°C to 85oC.