General Description

The VSC8166 demultiplexes a 2.488Gbp/s LVPECL serial input datastream (DI+) to 16-bit wide, LVPECL 155Mb/s parallel data outputs (D0:D15+) for SONET/SDH applications. It has an integrated clock and data recovery unit with an on-chip PLL that internally generates a 2.488GHz clock in phase with the incoming data. Internal divider circuits are used to take the high-speed clock and generate 155.52MHz (CLK16O+) and 77.76MHz (CLK32O+) LVPECL external output clocks. The incoming data is retimed and demultiplexed to a 16-bit word which is clocked out of the demultiplexer by the 155.52MHz output clock.

Features

• 2.488Gb/s 1:16 Demultiplexer

• Fully Integrated Clock and Data Recovery

• Single 3.3V Supply Operation

• Differential LVPECL Low Speed Interface

• Maintains Clock Output in the Absence of

Data

• Loss of Lock, Loss of Signal Indicators

• 128 Pin 14x20x2 mm Enhanced PQFP Pkg.

• 2.3W Max Power Dissipation