Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs

Industry's Smallest Multichannel DS3/E3 and STS-1 LIUs

Please check latest availability status for a specific part variant.


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.
DS3151, DS3152, DS3153, DS3154: Functional Diagram DS3151, DS3152, DS3153, DS3154: Functional Diagram Enlarge+

Key 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 75Ω 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 +85°C
  • Small Package: 144-Pin, 13mm x 13mm Thermally Enhanced CSBGA
  • IEEE 1149.1 JTAG Support


  • Access Concentrators
  • ATM and Frame Relay Equipment
  • Digital Cross-Connects
  • DSLAMs
  • PBXs
  • Routers/Switches
  • SONET/SDH and PDH Multiplexers
  • Test Equipment
Product Reliability Reports: DS3154.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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