78P234xJAT Low Power Multi-channel Line Interface Transceivers

The 78P234xJAT are TDK Semiconductor’s family of low-power multi-port DS3/E3/STS1 transceiver IC’s with integrated Jitter Attenuator (JAT). They include 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. The devices have 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.

Ordering Information:

• 78P2342JAT - dual-port device
• 78P2343JAT - tripple-port device
• 78P2344JAT - quad-port device

All devices are pin compatible and interchangable.

Specifications		Applications
TRANSFORMER OR AC-COUPLED WITH CAPACITORS RECEIVER AGC CORRECTS FOR UP TO 6dB OF FLAT LOSS ADAPTIVE DIGITAL CLOCK RECOVERY JITTER ATTENUATOR CONFIGURABLE FOR TRANSMIT OR RECEIVE PATH TRANSMIT LINE FAULT MONITOR TRANSMIT AND RECEIVE INTERFACES FOR E3, DS3 AND STS-1 APPLICATIONS DESIGNED FOR USE WITH 75ohm COAXIAL CABLE LENGTHS UP TO 1350 FEET RECEIVES DS-3HIGH AND DSX3 MONITOR SIGNALS LOCAL AND REMOTE LOOPBACKS SELECTABLE B3ZS/HDB3 ENDEC WITH LINE CODE VIOLATION DETECTOR STANDARDS BASED LOS DETECTOR FULLY INTEGRATED JITTER ATTENUATION FUNCTION PROVIDED FOR ALL LINE RATES		CENTRAL OFFICE INTERCONNECTS DSLAMs ADD DROP MULTIPLEXERS (ADMs) MULTI SERVICE SWITCHES MICROWAVE RADIO SYSTEMS WIRELESS COMMUNICATIONS INFRASTRUCTURE

Resources and Documentation

78P2342JAT - Datasheet Teridian Datasheet for 78P2342JAT dual-channel STS1 transceiver IC Hosted by Teridian Semiconductor   Revision: 2.2 Jul 2005 36 pages - 473Kb 78P2343JAT - Datasheet Teridian Datasheet for 78P2343JAT triple-channel STS1 transceiver IC Hosted by Teridian Semiconductor   Revision: 2.2 Jul 2005 36 pages - 473Kb 78P2344JAT - Datasheet Teridian Datasheet for 78P2344JAT quad-channel STS1 transceiver IC Hosted by Teridian Semiconductor   Revision: 2.2 Jul 2005 37 pages - 475Kb

Comprehensive Development Support

We can provide further assistance in reducing design and implementation timescales. TDK have a comprehensive evaluation kit availble that includes an OEM integrator kit and technical support from a team of experienced engineers.

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