1FEATURES

2• DC - 3.125 Gbps Low Jitter, Low Skew, Low

Power Operation

• Pin Selectable Transmit Pre-Emphasis and

Receive Equalization Eliminate Data

Dependant Jitter

• Wide Input Common Mode Range Allows DC-

coupled Interface to LVDS, CML and LVPECL

Drivers

• Redundant Inputs

• Integrated 100Ω Input and Output

Terminations

• 8 kV ESD on LVDS I/O Pins Protects Adjoining

Components

• Small 6 mm x 6 mm WQFN-40 Space Saving

Package

APPLICATIONS

• Clock and Data Distribution

• Clock and Data Buffering and Muxing

• OC-48 / STM-16

• SD/HD/3GHD SDI Routers

DESCRIPTION

The DS25BR204 is a 3.125 Gbps 1:4 LVDS repeater

optimized for high-speed signal routing and switching

over lossy FR-4 printed circuit board backplanes and

balanced cables. Fully differential signal paths ensure

exceptional signal integrity and noise immunity.

The device has two different LVDS input channels

and a select line determines which input is active.

Both inputs have programmable equalization

providing maximum signal strength. A loss-of-signal

(LOS) circuit monitors both input channels and a

unique LOS pin reports when no signal is detected at

that input.

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 return

losses, reduce component count and further minimize

board space.