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 100Ω differential terminating resistors. All driver
outputs are internally terminated with 50Ω to VCC.
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 100Ω differential terminating resistors. All driver
outputs are internally terminated with 50Ω to VCC.