XRT75L04

www.DataSheet4U.com JULY 2006 XRT75L04 FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER REV. 1.0.4 GENERAL DESCRIPTION The XRT75L04 is a four-channel fully integrated Line Interface Unit (LIU) with Jitter Attenuator for E3/DS3/ STS-1 applications. It incorporates four independent Receivers, Transmitters and Jitter Attenuators in a single 176 pin LQFP package. Each channel of the XRT75L04 can be configured to operate in E3 (34.368 MHz), DS3 (44.736 MHz) or STS-1 (51.84 MHz) rates that are independent of each other. Each transmitter can be turned off and tristated for redundancy support and for conserving power. The XRT75L04’s differential receivers provide high noise interference margin and are able to receive the data over 1000 feet of cable or with up to 12 dB of cable attenuation. The XRT75L04 incorporates an advanced crystalless jitter attenuator per channel that can be selected either in the transmit or receive path. The jitter attenuator performance meets the ETSI TBR-24 and Telcordia GR-499, GR-253 specifications. The XRT75L04 provides both Serial Microprocessor Interface as well as Hardware mode for programming and control. The XRT75L04 supports local, remote and digital loop-backs. The XRT75L04 also contains an onboard Pseudo Random Binary Sequence (PRBS) generator and detector with the ability to insert and detect single bit error. Provides low jitter clock outputs for either DS3,E3 or STS-1 rates. TRANSMITTER: Compliant with Telcordia GR-499, GR-253...