The DS25BR440 is a 3.125 Gbps Quad LVDS buffer optimized for high-speed signal routing and repeating over lossy FR-4 printed circuit board backplanes and balanced cables. Fully differential signal paths ensure exceptional signal integrity and noise immunity.
The DS25BR440 features two levels of transmit pre-emphasis (PE) and two levels of receive equalization (EQ). Both of these features compensate for interconnect losses and ultimately maximize noise margin. A loss-of-sign (LOS)\ circuit monitors each input channel and a unique (LOS)\ pin is asserted 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.
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 Voltage Range Allows DC-Coupled Interface to LVDS, CML and LVPECL Drivers
(LOS)\ Circuitry Detects Open Inputs Fault
Integrated 100Ω Input and Output Terminations
8 kV ESD on LVDS I/O Pins Protects Adjoining Components