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DS25CP102 Datasheet, PDF (1/16 Pages) National Semiconductor (TI) – 3.125 Gbps 2X2 LVDS Crosspoint Switch with Transmit Pre-Emphasis and Receive Equalization
January 17, 2008
DS25CP102
3.125 Gbps 2X2 LVDS Crosspoint Switch with Transmit
Pre-Emphasis and Receive Equalization
General Description
The DS25CP102 is a 3.125 Gbps 2x2 LVDS crosspoint switch
optimized for high-speed signal routing and switching over
lossy FR-4 printed circuit board backplanes and balanced ca-
bles. Fully differential signal paths ensure exceptional signal
integrity and noise immunity. The non-blocking architecture
allows connections of any input to any output or outputs.
The DS25CP102 features two levels (Off and On) of transmit
pre-emphasis (PE) and two levels (Off and On) of receive
equalization (EQ).
Wide input common mode range allows the switch to accept
signals with LVDS, CML and LVPECL levels; the output levels
are LVDS. A very small package footprint requires a minimal
space on the board while the flow-through pinout allows easy
board layout. Each differential input and output is internally
terminated with a 100Ω resistor to lower device insertion and
return losses, reduce component count and further minimize
board space.
Features
■ DC - 3.125 Gbps low jitter, low skew, low power operation
■ Pin configurable, fully differential, non-blocking
architecture
■ Pin selectable transmit pre-emphasis and receive
equalization eliminate data dependant jitter
■ Wide Input Common Mode Voltage Range allows DC-
coupled interface to CML and LVPECL drivers
■ On-chip 100Ω input and output termination minimizes
insertion and return losses, reduces component count and
minimizes board space
■ 8 kV ESD on LVDS I/O pins protects adjoining
components
■ Small 4 mm x 4 mm LLP-16 space saving package
Applications
■ High-speed channel select applications
■ Clock and data buffering and muxing
■ OC-48 / STM-16
■ SD/HD/3GHD SDI Routers
Typical Application
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