GENERAL DESCRIPTION
The AD8158 is an asynchronous, protocol-agnostic, quad-lane 2:1 switch with a total of 12 differential CML inputs and 12 differential CML outputs. The signal path supports NRZ signaling with data rates up to 6.5 Gbps per lane. Each lane offers programmable receive equalization, programmable output pre-emphasis, programmable output levels, and loss-of signal detection.

FEATURES
  Quad 2:1 mux/1:2 demux
  Optimized for dc to 6.5 Gbps NRZ data
  Per-lane P/N pair inversion for routing ease
  Programmable input equalization
     Compensates up to 40 inches of FR4
  Loss-of-signal detection
  Programmable output pre-emphasis up to 12 dB
  Programmable output levels with squelch and disable
  Accepts ac-coupled or dc-coupled differential CML inputs
  50 Ω on-chip termination
  1:2 demux supports unicast or bicast operation
  Port-level loopback
  Port or single lane switching
  1.8 V to 3.3 V flexible core supply
  User-settable I/O supply from VCC to 1.2 V
  Low power, typically 2.0 W in basic configuration
  100-lead LFCSP
  −40°C to +85°C operating temperature range

APPLICATIONS
  Low cost redundancy switch
  SONET OC48/SDH16 and lower data rates
  XAUI/GbE/FC/Infiniband over backplane
  OIF CEI 6.25 Gbps over backplane
  Serial data-level shift
  4-/8-/12-lane equalizers or redrivers