LXT350/351 - Integrated T1/E1 S/H Transceivers Note - Not recommended for new designs

The LXT350 and LXT351 are full-featured, fully-integrated transceivers for T1 and E1 short-haul applications. They are software switchable between T1 and E1 operation, and offer pulse equalization settings for all short-haul T1 and E1 line interface (LIU) applications. The LXT350 and LXT351 are identical except for their control interface. The LXT350 provides both a serial I/O port for microprocessor control and a hardware control mode for stand alone operation. The LXT351 offers an Intel- or Motorola-bus compatible parallel I/O port for microprocessor control. Both incorporate advanced crystal-less digital jitter attenuation in either the transmit or receive data path starting at 3 Hz. B8ZS/HDB3 encoding/decoding and unipolar or bipolar data I/O are available. Both LIUs provide loss of signal monitoring and a variety of diagnostic loopback modes.

Applications
  • T1/E1 Asynchronous Multiplexers
  • Digital Loop Carrier - Subscriber Carrier Systems
  • SDH/SONET Multiplexers
  • T1/E1 LAN/WAN interfaces for Bridges
  • Digital Cross Connects
    • Features and Benefits
  • Fully integrated transceiver for short-haul T1 or E1 interfaces
  • Crystalless digital jitter attenuation
  • Selectable either transmit or receive path
  • No crystal or high-speed external clock required
  • Meet or exceed specifications in ANSI T1.403 and T1.408; ITU G.703, G.736, G.775 and G.823; ITU-T I.431; ETSI300-166 and300-233; and AT&T Pub62411
  • Support 75 W (E1 coax), 100 W (T1 twisted-pair) and 120 W (E1 twisted-pair) applications
  • Fully restores the received signal after transmission through a cable with attenuation of 18dB, at 1024 kHz
  • Five Pulse Equalization Settings for T1 short-haul applications
  • Transmit/receive performance monitors with Driver Fail Monitor Open (DFM) and Loss of Signal (LOS) outputs
  • Selectable unipolar or bipolar data I/O and B8ZS/HDB3 encoding/decoding
  • QRSS generator/detector for testing or monitoring
  • Output short circuit current limit protection
  • Local, remote and analog loopback capability
  • Multiple-register serial- or parallel-control interface
  • Compatible with Level One’s LXT360/361 T1/E1 Long Haul/Short Haul Transceiver (Universal LIU)
    • 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
    PCN0607-06.1 LXT350QE T1/E1; Product Discontinuance; Revised Product Table 2007-Jul-23
    PCN0607-04.0 PLCC Package Conversion of MSL1 to MSL3 2007-Jul-26
    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
    PCN0308-04.0 Cortina Systems, Pack Change, Select QFP's 2008-Mar-25
    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