GENERAL DESCRIPTION
   The DS3151 (single), DS3152 (dual), DS3153 (triple), and DS3154 (quad) line interface units (LIUs) perform the functions necessary for interfacing at the physical layer to DS3, E3, or STS-1 lines. Each LIU has independent receive and transmit paths and a built-in jitter attenuator.

FEATURES
◾ Single, Dual, Triple, or Quad Integrated
   Transmitter, Receiver, and Jitter Attenuators for
   DS3, E3, and STS-1
◾ Each Port Independently Configurable
◾ Perform Receive Clock/Data Recovery and
   Transmit Waveshaping
◾ Hardware or CPU Bus Configuration Options
◾ Jitter Attenuators can be Placed in Either the
   Receive or Transmit Paths
◾ Interface to 75
Coaxial Cable at Lengths Up to
   380m (DS3), 440m (E3), or 360m (STS-1)
◾ Use 1:2 Transformers on Tx and Rx
◾ Require Minimal External Components
◾ Local and Remote Loopbacks
◾ Low-Power 3.3V Operation (5V Tolerant I/O)
◾ Industrial Temperature Range:
   -40°C to +85C
◾ Small Package: 144-Pin, 13mm x 13mm
   Thermally Enhanced CSBGA
◾ IEEE 1149.1 JTAG Support

APPLICATIONS
   SONET/SDH and PDH Multiplexers
   Digital Cross-Connects
   Access Concentrators
   ATM and Frame Relay Equipment
   Routers
   PBXs
   DSLAMs
   CSUs/DSUs