The 3.2 Gbps Quad Buffer Mux/Demux AD8159 Rev. B is a low cost redundancy switch for SONET OC-48/SDH-16 and lower data rates. It features a 2:1 mux/1:2 demux function with a 3.2 Gbps switching speed. Each port consists of 4 lanes that can operate independently and provide a range of operation from dc to 3.2 Gbps. The AD8159 Rev. B also features reversible inputs and outputs, a single port loopback function, single lane switching capability and low power consumption.
The AD8159 is an asynchronous, protocol‑agnostic quad‑lane 2:1 switch with 12 differential inputs and 12 differential outputs. It supports data rates up to 3.2 Gbps per lane, offers input equalization, output pre‑emphasis, and port‑level loopback and reversal capabilities, making it suitable for high‑speed serial backplane applications such as Ethernet, Fibre Channel, and PCIe.
The document provides a functional block diagram, pin‑out tables, absolute maximum ratings, electrical specifications, typical performance graphs, and an evaluation board overview. It also includes revision history and ordering information for the 100‑lead TQFP package.
| Data Rate per Channel (NRZ) | 3.2 Gbps |
|---|---|
| Propagation Delay (input to output) | 600 ps |
| Lane‑to‑Lane Skew | 100 ps |
| Switching Time | 5 ns |
| Output Voltage Swing (Differential) | 800 mV p‑p |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 100‑lead TQFP_EP |
The AD8159 supports up to 3.2 Gbps per lane.
Low power, typically about 1 W in the basic configuration.
Yes, it includes port‑level loopback capability.
It is supplied in a 100‑lead TQFP_EP package.