Product Summary

The LXT3108BE is the first fully integrated transceiver for T1 CSU and ISDN primary rate interface applications at 1.544 Mbps. The transceiver operates over 6000 feet of 22 AWG twisted-pair cable without any external components. To compensate for shorter lines, 7.5dB, 15dB and 22.5dB frequency-dependent transmit line build-outs are provided. The applications of the LXT3108BE include ISDN primary rate interface, CSU interface to T1 service, DS1 metallic interface, T1 LAN bridge, CPU to CPU channel extenders, digital loop carrier, T1 Mux and channel banks.

Parametrics

LXT3108BE absolute maximum ratings: (1)DC supply (referenced to GND), RV+, TV+: -0.3 to 6.0V; (2)input voltage, any pin, VIN: RGND-0.3 to RV++0.3V; (3)input current, any pin, IIN: -10 to 10mA; (4)ambient operating temperature, TA: -40 to 85℃; (5)storage temperature, Tstg: -65 to 150℃.

Features

LXT3108BE features: (1)fully integrated transceiver comprising: on-chip equalizer; timing recovery/control; data processor; receiver; and transmitter with line build-out and digital control; (2)meets or exceeds ANSI and ITU specifications including T1.403, T1.408 and AT&T pub 62411; (3)selectable receiver sensitivity, fully resores the received signal after transmission through a cable with attenuation of either 0 to 26dB @ 772kHz; (4)sselectable unipolar or bipolar data I/O; (5)slectable B8ZS encoding/decoding; (6)line attenuation indication output; (7)138 UI jitter tolerance at 1 Hz; (8)output short circuit current limit protection; (9)on-line idle mode for redundant systems; (10)7.5dB, 15dB and 22.5dB transmit LBOs; (11)local, remote and inband network loopback functions; (12)receive monitor with loss of signal output; (13)jitter attenuation starting at 6 Hz, switchable to transmit or receive path; (14)microprocessor controllable.

Diagrams

LXT3108BE block diagram

LXT307
LXT307

Other


Data Sheet

Negotiable 
LXT312
LXT312

Other


Data Sheet

Negotiable 
LXT313
LXT313

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Data Sheet

Negotiable 
LXT334
LXT334

Other


Data Sheet

Negotiable 
LXT334QE
LXT334QE

Other


Data Sheet

Negotiable 
LXT335
LXT335

Other


Data Sheet

Negotiable