Multiplexer/Buffer 48-Pin LLP EP T/R

The DS42MB200 is a dual signal conditioning 2:1 multiplexer and 1:2 fan-out buffer designed for use in backplane redundancy applications. Signal conditioning features include input equalization and programmable output pre-emphasis that enable data communication in FR4 backplanes up to 4.25 Gbps. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. All output drivers have 4 selectable steps of pre-emphasis to compensate for transmission losses from long FR4 backplanes and reduce deterministic jitter. The pre-emphasis levels can be independently controlled for the line-side and switch-side drivers. The internal loopback paths from switch-side input to switch-side output enable at-speed system testing. All receiver inputs are internally terminated with 100? differential terminating resistors. All driver outputs are internally terminated with 50? to VCC. 

1– 4.25 Gbps Fully Differential Data Paths

Fixed Input Equalization

Programmable Output Pre-emphasis

Independent Switch and Line Side Pre-emphasis Controls

Programmable Switch-side Loopback Mode

On-chip Terminations

+3.3V Dupply

ESD Rating HBM 6 kV

Lead-less WQFN-48 Package (7mmx7mmx0.8mm, 0.5mm Pitch)

–40°C to +85°C Operating Temperature Range