DS21349

NOT RECOMMENDED FOR NEW DESIGNS

3.3V T1/J1 Line Interface Unit

Data Sheet (Rev. 3)
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Part Details

  • Fully integrated line interface unit (LIU)
  • Pin compatible with LevelOne 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, and AT&T 62411
  • Usable receive sensitivity of 0dB to -36dB that allows the device to operate on 0.63mm (22AWG) cables up to 6k feet in length
  • Five line buildout 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
DS21349
3.3V T1/J1 Line Interface Unit
DS21349: Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 2

Technical Articles 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Product 5
DS2149
NOT RECOMMENDED FOR NEW DESIGNS 5V T1/J1 Line Interface Unit
DS21348
NOT RECOMMENDED FOR NEW DESIGNS 3.3V E1/T1/J1 Line Interface
DS2148
NOT RECOMMENDED FOR NEW DESIGNS 5V E1/T1/J1 Line Interface
DS21Q48
5V E1/T1/J1 Line Interface
DS21Q348
3.3V E1/T1/J1 Line Interface
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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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