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

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

Part Details
  • 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
Additional Details
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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.


  • Access Concentrators
  • ATM and Frame Relay Equipment
  • Digital Cross-Connects
  • DSLAMs
  • PBXs
  • Routers/Switches
  • SONET/SDH and PDH Multiplexers
  • Test Equipment

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1


Triple DS3/E3/STS-1 LIU Demo Kit



Triple DS3/E3/STS-1 LIU Demo Kit

Triple DS3/E3/STS-1 LIU Demo Kit

Features and Benefits

  • Soldered DS3153 for Best Signal Integrity
  • BNC Connectors, Transformers and Termination Passives for All Four LIUs
  • Careful Layout for Analog Signal Paths
  • Equipment-Side Connector for External Data Source/Sink or External Remote Loopback
  • On-Board DS3 and E3 Crystal Oscillators
  • DS3153 Configured for CPU Bus Operation for Complete Control Over the Device
  • On-Board Dallas Microcontroller and Included Software Provide Point-and-Click Access to the DS3153 Register Set
  • LEDs for Interrupt, Loss-of-Signal, Transmit Driver Monitor, and PRBS Sync
  • Banana Jack Connectors for VDD and GND Support Use of Lab Power Supplies
  • Separate DS3153 VDD to Enable IDD Measurements
  • Easy-to-Read Silk Screen Labels Identify the Signals Associated with All Connectors, Jumpers and LEDs

Product Detail

The DS3153DK is an easy-to-use evaluation kit for the DS3153 triple DS3/E3/STS-1 LIU. A surface-mounted DS3153 and careful layout of the analog signal traces provide maximum signal integrity to demonstrate the transmit and receive capabilities of the DS3153. On-board Dallas 8051-compatible microcontroller and included software give point-and-click access to configuration and status registers from a personal computer. LEDs on the board indicate interrupt, loss-of-signal, transmit driver monitor, and PRBS sync status for all four ports. The board provides BNC connectors for the line-side transmit and receive differential pairs and a 50-pin connector for framer interface signals. All LEDs and connectors are clearly labeled with silk-screening to identify associated signals.

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