DS21Q55

Quad T1/E1/J1 Transceiver


Please check latest availability status for a specific part variant.

Description

The DS21Q55 is a quad software-selectable T1, E1, or J1 MCM device for short-haul and long-haul applications. Each port is composed of a line interface unit (LIU), framer, HDLC controllers, and a TDM backplane interface, and is controlled by an 8-bit parallel port configured for Intel or Motorola bus operations. The DS21Q55 is software compatible with the DS2155 single-chip transceiver. It is pin compatible with the DS21Qx5y family of products.
DS21Q55, DS21Q55N: Block Diagram DS21Q55, DS21Q55N: Block Diagram Enlarge+

Key Features

  • Complete T1/DS1/ISDN-PRI/J1 Transceiver Functionality
  • Complete E1 (CEPT) PCM-30/ISDN-PRI Transceiver Functionality
  • Long-Haul and Short-Haul Line Interface for Clock/Data Recovery and Waveshaping
  • CMI Coder/Decoder for Optical I/F
  • Crystal-Less Jitter Attenuator
  • Fully Independent Transmit and Receive Functionality
  • Dual HDLC Controllers
  • Programmable BERT Generator and Detector
  • Internal Software-Selectable Receive and Transmit-Side Termination Resistors for 75Ω /100Ω /120Ω T1 and E1 Interfaces
  • Dual Two-Frame Elastic-Store Slip Buffers that Connect to Asynchronous Backplanes Up to 16.384MHz
  • 16.384MHz, 8.192MHz, 4.096MHz, or 2.048MHz Clock Output Synthesized to Recovered Network Clock

Applications/Uses

  • Channel Banks
  • Channel Service Units (CSUs)
  • Data Service Units (DSUs)
  • DSL Add/Drop Multiplexers
  • Muxes
  • Routers/Switches
  • Routers/Switches
  • T1/E1 Test Equipment

Technical Documents

App Note 3686 DS2155 and DS26521 Software Comparison
App Note 3610 DS21458 Quad and DS26528 Octal Transceiver Software Comparison
App Note 3349 T1/E1 Loopback Operation for Maxim T1/E1/J1 Transceivers
App Note 3345 Examples of DS31256 Applications
App Note 3208 Elastic Store Operation
App Note 3121 Selecting a T1/E1/J1 Single-Chip Transceiver
App Note 2731 DS2155, DS21Q55, DS2156 Programming SLC-96
App Note 2713 Switching Frame Mode In Live T1 Systems
App Note 1797 Measuring Telecom Systems Against a Pulse Mask Template
App Note 461 Programming and Controlling the FDL on DS2141A, DS2151
App Note 406 DS21Qx5y BSDL Scan Chain Mapping
App Note 405 Power-Fault Protection Layout
App Note 403 DS2155 and DS26401 Software Comparison
App Note 401 Extended System Information Bus (ESIB) Control Application
App Note 400 DS2155 Monitor Mode Design
App Note 397 Pulse Template Measurement
App Note 396 Design Migration from DS21Q55 to DS21Q50 or DS21Q59
App Note 394 HDLC Configuration of Framers and Transceivers
App Note 391 NRZ Applications
App Note 390 DS31256 and T1/E1 Interface
App Note 389 DS2155 Internal BERT Programming
App Note 382 J1 Japanese Standards
App Note 374 DS2155 vs. DS21x5y: Software and Hardware Considerations
App Note 351 T1/E1 and T3/E3 Transformer Selection Guide
App Note 345 DS21352/552, DS2151, DS2152, DS2141A, DS21Q42 Programming SLC-96
App Note 340 DS2153 Programming, ETS 300-011 Remote Alarm Generation
App Note 336 Transparent Operation on T1, E1 Framers and Transceivers
App Note 319 DS2152, DS2154, DS21x5Y, and DS2155 Interfacing to the MC68360 (QUICC32)

Quality and Environmental Data

Product Reliability Reports: DS21Q55.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • DS21Q554B+
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources

    Type ID PDF Title
    App Note 3686 DS2155 and DS26521 Software Comparison
    App Note 3610 DS21458 Quad and DS26528 Octal Transceiver Software Comparison
    App Note 3349 T1/E1 Loopback Operation for Maxim T1/E1/J1 Transceivers
    App Note 3345 Examples of DS31256 Applications
    App Note 3208 Elastic Store Operation
    App Note 3121 Selecting a T1/E1/J1 Single-Chip Transceiver
    App Note 2731 DS2155, DS21Q55, DS2156 Programming SLC-96
    App Note 2713 Switching Frame Mode In Live T1 Systems
    App Note 1797 Measuring Telecom Systems Against a Pulse Mask Template
    App Note 461 Programming and Controlling the FDL on DS2141A, DS2151
    App Note 406 DS21Qx5y BSDL Scan Chain Mapping
    App Note 405 Power-Fault Protection Layout
    App Note 403 DS2155 and DS26401 Software Comparison
    App Note 401 Extended System Information Bus (ESIB) Control Application
    App Note 400 DS2155 Monitor Mode Design
    App Note 397 Pulse Template Measurement
    App Note 396 Design Migration from DS21Q55 to DS21Q50 or DS21Q59
    App Note 394 HDLC Configuration of Framers and Transceivers
    App Note 391 NRZ Applications
    App Note 390 DS31256 and T1/E1 Interface
    App Note 389 DS2155 Internal BERT Programming
    App Note 382 J1 Japanese Standards
    App Note 374 DS2155 vs. DS21x5y: Software and Hardware Considerations
    App Note 351 T1/E1 and T3/E3 Transformer Selection Guide
    App Note 345 DS21352/552, DS2151, DS2152, DS2141A, DS21Q42 Programming SLC-96
    App Note 340 DS2153 Programming, ETS 300-011 Remote Alarm Generation
    App Note 336 Transparent Operation on T1, E1 Framers and Transceivers
    App Note 319 DS2152, DS2154, DS21x5Y, and DS2155 Interfacing to the MC68360 (QUICC32)