DS2149

NOT RECOMMENDED FOR NEW DESIGNS

5V T1/J1 Line Interface Unit

Complete 5V, T1 Line Interface Unit (LIU) for Short-Haul and Long-Haul Applications

Data Sheet (Rev. 2)
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Part Details

  • Fully integrated line interface unit (LIU)
  • Pin compatible with LXT362
  • Supports both long haul and short haul
  • Crystal-less jitter attenuator
  • Jitter attenuator programmable for transmit or receive path
  • Meets ANSI T1.102, T1.403, T1.408, AT&T 62411
  • Usable receive sensitivity of 0dB to -36dB, which allows the device to operate on 0.63mm (22AWG) cables up to 6k feet in length
  • Five line build-out settings for short-haul applications
  • Four CSU filters from 0dB to -22.5dB
  • Transmit/receive performance monitors with driver-fail, monitor-open and loss-of-signal outputs
  • Bipolar or NRZ interface
  • Programmable B8ZS encoder/decoder
  • QRSS generator/detector
  • Local, remote, and analog loopbacks
  • Generates and detects in-band loop-up and loop-down codes
  • Serial interface provides access to control registers
    • DS2149
    5V T1/J1 Line Interface Unit
    DS2149: Block Diagram
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    Documentation

    Data Sheet 1

    Reliability Data 1

    Application Note 2

    Design Note 1

    Technical Articles 1

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    Evaluation Kits

    DS21349DK

    T1/J1 Line Interface Unit Design Kit

    Buy Now View Details

    Features and Benefits

    • PLCC 28-pin socket for multiple part evaluation
    • Bantam and RJ48 connectors, transformers, and termination passives for LIU
    • Two separate and controllable transmit paths for TTIP and TRING for evaluating multiple transformers
    • Equipment-side connector for external data source/sink or external remote loopback
    • On-board T1 crystal oscillator
    • On-board 8051 microprocessor for software mode access
    • Connector accesses to CS, SCLK, SDI, and SDO for firmware development
    • Controllable 5V and 3.3V for VCC and IO pins to support the DS2149 and DS21349 LIUs

    Product Details

    The DS2149DK/DS21349DK is a fully integrated design kit for the DS2149 and the DS21349 T1/J1 line interface units (LIUs). It contains the necessary circuitry to evaluate the device in all operation modes, including running the device in hardware and software mode.

    DS2149DK

    T1/J1 Line Interface Unit Design Kit

    Buy Now View Details

    Features and Benefits

    • PLCC 28-pin socket for multiple part evaluation
    • Bantam and RJ48 connectors, transformers, and termination passives for LIU
    • Two separate and controllable transmit paths for TTIP and TRING for evaluating multiple transformers
    • Equipment-side connector for external data source/sink or external remote loopback
    • On-board T1 crystal oscillator
    • On-board 8051 microprocessor for software mode access
    • Connector accesses to CS, SCLK, SDI, and SDO for firmware development
    • Controllable 5V and 3.3V for VCC and IO pins to support the DS2149 and DS21349 LIUs

    Product Details

    The DS2149DK/DS21349DK is a fully integrated design kit for the DS2149 and the DS21349 T1/J1 line interface units (LIUs). It contains the necessary circuitry to evaluate the device in all operation modes, including running the device in hardware and software mode.
    DS21349DK
    T1/J1 Line Interface Unit Design Kit
    DS2149DK
    T1/J1 Line Interface Unit Design Kit

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