2342
The 78P2342JAT is a low-power dual-port DS3/E3/STS1 transceiver IC with integrated Jitter Attenuator (JAT). It includes clock recovery and transmitter pulse shaping functions for applications using 75-ohm coaxial cable at distances up to 1200 feet long end-to-end or up to 750ft long from a DS3 cross connect. The receiver recovers clock and data from a B3ZS or HDB3 coded AMI signal. It can compensate for over 12dB of cable and 6dB of flat loss. The transmitter generates a signal that meets the standard pulse shape requirements. It has a selectable B3ZS/HDB3 ENDEC with a receive line code violation detector, a local and remote loop-back mode, an input receive MUX that can select a redundant channel, a clock polarity selection mode, and the ability to receive a DSX3 monitor signal.Features
DUAL port LIU with Jitter Attenuation for E3, DS3 and STS-1 applicationsFully integrated Jitter Attenuation for all line rates (no external VCXO required)
75 ohm coaxial cable lengths up to 1350 ft
Local and Remote loopbacks, LOS detector
Selectable B3ZS/HDB3 ENDEC with line code violation detector
Adaptive digital clock recovery (uses line-rate reference clock input)
100-pin JEDEC LQFP footprint compatible with 78P2343JAT, 78P2344JAT
