This document describes the features and characteristics of the AD8155 Rev. 0, a 6.5 Gbps dual buffer mux/demux. It includes dual 2:1 mux/1:2 demux, optimized for dc to 6.5 Gbps NRZ data, programmable input equalization, loss-of-signal detection, programmable output preemphasis, etc.
The AD8155 is an asynchronous, protocol‑agnostic dual‑lane 2:1 multiplexer and 1:2 demultiplexer offering six differential CML inputs and outputs. Each lane provides programmable receive equalization, output pre‑emphasis (up to 12 dB), loss‑of‑signal detection and I²C‑based register control. The device operates from a 1.8 V to 3.3 V core supply and consumes as little as 2 W in basic configuration.
Typical applications include redundancy switching for SONET OC48/SDH16, RXAUI, Fibre Channel, Infiniband and GbE back‑plane links, as well as test and port‑monitoring setups. Configuration can be performed via external toggle pins or through the on‑chip I²C interface, allowing lane‑by‑lane control of equalization, pre‑emphasis and routing.
| Maximum Data Rate (NRZ) per channel | 6.5 Gbps |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Core Supply Voltage | 1.8 V to 3.3 V |
| Output Pre‑emphasis | up to 12 dB |
The AD8155 supports up to 6.5 Gbps NRZ data per lane.
It can be configured either through external toggle pins or by writing registers via the I²C interface.