The DS40MB200 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 Gb/s. 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 and driver outputs are internally terminated with 100Ω differential terminating resistors.
The DS40MB200 is a dual signal conditioning 2:1 multiplexer and 1:2 fan-out buffer designed for use in backplane redundancy applications. It supports data communication in FR4 backplanes up to 4 Gb/s with features including fixed input equalization and programmable output pre-emphasis to compensate for transmission losses and reduce deterministic jitter.
The device operates from a +3.3V supply and is available in a lead-less LLP-48 package. It includes internal loopback paths for at-speed system testing and on-chip terminations. The datasheet provides pin descriptions, logic tables for multiplex and loopback controls, pre-emphasis settings for different trace lengths, and electrical characteristics.
| Data Rate | 1— 4 Gbps |
|---|---|
| Supply Voltage | +3.3V |
| Max Power Dissipation | 1W |
| Operating Temperature | 0°C to +85°C |
| Package Type | Lead-less LLP-48 |
| Package Dimensions | 7mm x 7mm x 0.8mm |
| Output Termination | 100Ω differential |
The device supports fully differential data paths up to 4 Gbps.
Yes, it has programmable switch-side loopback mode enabled by specific control pins.
The device requires a +3.3V supply voltage.