XRT82L24A

www.DataSheet4U.com áç AUGUST 2004 XRT82L24A REV. 1.1.2 QUAD E1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR GENERAL DESCRIPTION The XRT82L24A is a fully integrated Quad (four channels) short-haul line interface unit for E1(2.048Mbps) 75Ω or 120Ω applications. Each channel consists of a receiver with equalizer for reliable data and clock recovery, and a transmitter which accepts either single or dual-rail digital inputs for signal transmission to the line using a low output impedance line driver. The device also includes a crystal-less jitter attenuator which, depending on system requirements, can be selected in the receive or transmit path through the Host or Hardware Mode control. XRT82L24A is a low power CMOS device operating on a single 3.3V supply with 5V tolerant digital inputs. FEATURES Fully integrated quad, short-haul PCM transceivers for E1 applications. On Chip Receive Equalizer and Transmit Pulse Shaper for CEPT 75Ω and 120Ω line terminations On chip clock recovery circuit Transformer or capacitor coupled receiver inputs Crystal-less jitter attenuator can be selected in the transmit or receive path High receiver interference immunity Per-channel transmit power shutdown Tri-state transmit output capability On chip per-channel driver failure monitoring circuit On chip HDB3/B8ZS/AMI encoder/decoder functions Supports Gapped Clock for Multiplexer Mapper Applications Transmit return loss meets or exceeds ETSI 300 166 standard ...