XRT83SL28(2003) データシートの表示（PDF） - Exar Corporation
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XRT83SL28 Datasheet PDF : 47 Pages
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PRELIMINARY
XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
REV. P1.0.1
FEATURES
• 1:1 and 1+1 protection without relays.
• Fully integrated 8-Channel short haul transceivers • RLOS/AIS according to ITU-T G.775 or ETSI-300-
for E1 (2.048MHz) applications.
233.
• Internal Impedance matching on both receive and
transmit for 75Ω (E1) or 120Ω (E1) applications.
• Tri-State on a per channel basis for the transmit
selection.
• On-Chip transmit short-circuit protection and
limiting protects line drivers from damage on a per
channel basis.
• Independent Crystal-Less digital jitter attenuators
(JA) with 32-Bit or 64-Bit FIFO for the receive or
transmit paths
• Driver failure monitor output (DMO) alerts of
possible system or external component problems.
• On-Chip HDB3 encoder/decoder for each channel.
• On-Chip digital clock recovery circuit for high input
jitter tolerance.
• Line code error and bipolar violation detection.
• Transmit all ones (TAOS) for the Transmit and
Receive Outputs.
• Supports local analog, remote, and digital loopback
modes.
• Supports gapped clocks for mapper/multiplexer
applications.
• Low Power dissipation
• Transmit outputs and receive inputs may be "High"
impedance for protection or redundancy
applications on a per channel basis.
• Support for automatic protection switching.
• Single 3.3V supply operation (3V to 5V I/O
tolerant).
• 144-Pin TQFP package
• -40°C to +85°C Temperature Range
PRODUCT NUMBER
XRT83SL28IB
PRODUCT ORDERING INFORMATION
PACKAGE TYPE
144 Lead TQFP
OPERATING TEMPERATURE RANGE
-40°C to +85°C
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