Exar Corporation XRT83L34
The XRT83L34 is a fully integrated Quad (four channel) long-haul and short-haul line interface unit for T1 (1.544Mbps) 100Ω, E1 (2.048Mbps) 75Ω or 120Ω, or J1 110Ω applications. It also provides programmable transmit pulse generators for each channel that can be used for output pulse shaping allowing performance improvement over a wide variety of conditions. The XRT83L34 provides both a parallel Host microprocessor interface as well as a Hardware mode for programming and control.- Max Operating Temp : 85°C
- Min Operating Temp : -40°C
Source:
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| Part No. | XRT83L34 |
|---|---|
| Datasheet | XRT83L34 Download |
| Manufacturer |  Exar Corporation |
| Description | QUAD T1/E1/J1 LH/SH TRANSCEIVER |
| Buy | Stock & Price |
GENERAL DESCRIPTION
In long-haul applications the XRT83L34 accepts signals that have been attenuated from 0 to 36dB at 772kHz in T1 mode (equivalent of 0 to 6000 feet of cable loss) or 0 to 43dB at 1024kHz in E1 mode. In T1 applications, the XRT83L34 can generate five transmit pulse shapes to meet the short-haul Digital Cross-Connect (DSX-1) template requirements as well as for Channel Service Units (CSU) Line Build Out (LBO) filters of 0dB, -7.5dB -15dB and -22.5dB as required by FCC rules. Both the B8ZS and HDB3 encoding and decoding functions are selectable as well as AMI. An on-chip crystal-less jitter attenuator with a 32 or 64 bit FIFO can be placed either in the receive or the transmit path with loop bandwidths of less than 3Hz. The XRT83L34 provides a variety of loop-back and diagnostic features as well as transmit driver short circuit detection and receive loss of signal monitoring. It supports internal impedance matching for 75 Ω, 100Ω, 110Ω and 120Ω for both transmitter and receiver.
