TEMPE T3 E3 Multiplexer, 3.3V T3/E3 Framer and M13/E13/G.747 MUX

Please check latest availability status for a specific part variant.


The DS3112 T3/E3 Multiplex-Framer contains all the digital logic required to communicate over T3 and E3 transmission lines. Supporting both channelized and unchannelized operation, the DS3112 enables low-cost T3/E3 linecards that can be deployed in a variety of voice and data applications worldwide.
DS3112: Functional Diagram DS3112: Functional Diagram Enlarge+

Key Features

  • Five Operating Modes
    • M13 multiplexing (28 T1s to DS3)
    • E13 multiplexing (16 E1s to E3)
    • G.747 multiplexing (21 E1s to DS3)
    • Unchannelized DS3 framing
    • Unchannelized E3 framing
  • M13 or C-Bit Parity DS3 framing
  • G.751 E3 framing
  • Alarm generation and detection
  • HDLC controller with 256-byte FIFOs
  • FEAC controller
  • BERT (Bit Error Rate Tester)
  • Two T1/E1 add/drop ports
  • 27mm x 27mm 256-lead BGA package


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

Technical Documents

App Note 3760 Interleaved Bus Operation
App Note 3705 DS3112 LRCLKx Low Speed Clock Recovery Operation
App Note 3345 Examples of DS31256 Applications
App Note 3344 DS31256 -- T3/E3 MUX/DS3112 Hardware Connections
App Note 378 DS3112 Clock Rates and Frequency Tolerances of the Transmit Clock

Quality and Environmental Data

Product Reliability Reports: DS3112.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Reference Design: DS3112RD
Device Driver
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 >


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