LXT351

LXT351 T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation Datasheet The LXT351 is a full-featured, fully-integrated transceiver for T1 and E1 short-haul applications. The LXT351 is software switchable between T1 and E1 operation, and offers pulse equalization settings for all short-haul T1 and E1 line interface (LIU) applications. The LXT351 offers an Intel/Motorola compatible parallel port for microprocessor control. The device incorporates 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 selectable. Loss of signal monitoring and a variety of diagnostic loopback modes can also be selected. Applications s s SONET/SDH tributary interfaces Digital cross connects s s Public/private switching trunk line interfaces Microwave transmission systems Product Features s s s s s s Fully integrated transceivers for Short-Haul T1 or E1 interfaces Crystal-less digital jitter attenuation — Select 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 I.431, G.703, G.736, G.775 and G.823; ETSI 300-166 and 300-233; and AT&T Pub 62411 Supports 75 Ω (E1 coax), 100 Ω (T1 twisted-pair) and 120 Ω (E1 twisted-pair) applications Fully restores the received signal after transmission through a cable with attenuation of 18dB, at 1024 kHz Five pulse equalization sett...