LXT312A/315A - Low Power T1 PCM Repeaters/Transceivers Note - Not recommended for new designs.

 

The LXT312A and LXT315A are integrated repeater/transceiver circuits for T1 carrier systems. The LXT312A is a dual repeater/ transceiver and the LXT315A is a single repeater/transceiver. The LXT312A and LXT315A are designed to operate as regenerative repeaters/transceivers for 1.544 Mbps data rate PCM lines. Each includes all circuits required for a regenerative repeater/transceiver system including the equalization network, automatic line build-out (ALBO), and a state-of-the-art analog/digital clock extractionnetwork tuned by an external crystal. The key feature of the LXT312A family is that it requires only a crystal and a minimum of other components to complete a repeater/transceiver design. Compared with traditional tuned coil-type repeaters/transceivers, they offer significant savings in component and labor costs, along with reduced voltage drop/power consumption, and improved reliability. To ensure performance for all loop lengths, the LXT312A and LXT315A are 100% AC/DC tested using inputs generated by Cortina's proprietary transmission line and network simulator. The LXT312A and LXT315A are advanced CMOS devices which require only a single 5-volt power supply.
Features and Benefits
  • Integrated repeater/transceiver circuit on a single CMOS chip
  • On-chip equalization network
  • On-chip ALBO
  • Low power consumption
  • No tuning coil
  • On-chip Loopback
  • Recovered Clock Output
  • 0 to 36 dB dynamic range
  • -11 dB interference margin
  • Compatible with CB113/TA24 specifications
  • Single 5 V CMOS technology
  • Available in 16-pin PDIP and 44-pin PLCC
    • Product Change Notifications
    PCN106766 - 02 Ethernet Phy, MAC, Framers, T1/E1, Legacy Phy and Framers - Product Marking and Packaging Change, Product Marking 2006-Oct-12
    PCN0107-02.1 Ethernet Phy, MAC, Framers, T1/E1, Legacy Phy and Framers - Product Marking Change 2007-Jan-24
    DCL200711-01 Early Shipments due to IT Shutdown and Conversion 2007-Nov-06
    PCN1207-03.0 LXT314, LXT332, LXT360 & LXT10055 Product Discontinuance 2007-Dec-27
    DCL0108-01.0 Product Code Change 2008-Jan-04
    DCL200802-01.0 Cortina Systems, Inc. Products (Ethernet Phy, MAC, Framers, T1/E1, Transport and Legacy Phy, & EPON), DCL200802-01.0; FYI – Europe & Middle Eastern Region Orders and Payment Transition 2008-Feb-05
    PCN0308-01.0 Cortina Systems, Product Marking Change, FYI 2008-Mar-13
    DCL200804-01 Cortina Systems, Inc. Products (Ethernet Phy, MAC, Framers, T1/E1, Transport and Legacy Phy, & EPON), ; FYI – Latin America Regions Order and Payment Transition, DCL200804-01 2008-Apr-14
    PCN400620 Cortina Systems; LXT314 Integrated Repeater/Transceiver, LXT332 Dual T1/E1 Line Interface Unit, and LXT360 T1/E1 Lh/SH Transceiver 2008-Jun-24