DESCRIPTION

The 78P2243 is a triple channel version of the 78P2241. Each of the three ports is a line interface transceiver for E3, DS3, STS-1, North America T3 and ATM applications. It includes clock recovery and transmitter pulse shaping functions for applications using 75-ohm coaxial cable at distances up to 1100 feet. These applications include DSLAMs, T3/E3 digital multiplexers, SONET Add/Drop multiplexers, PDH equipment, DS3 to Fiber optic and microwave modems and ATM WAN access for routers and switches.

FEATURES

· Triple channel transmit and receive interface for E3, DS3 and STS-1 applications

· Interface to 75 ohm coaxial cable over 1100 feet at speeds up to 51.84 Mbit/s

· Compliant with ANSI T1.102-1993, Telcordia GR-499-CORE and GR-253-CORE, ITU-T G.703, G.823 and G.824 for jitter tolerance and G.775 for loss of signal

· Compliant with ATM FORUM af-phy-0034 (E3 public UNI) and af-phy-0054 (DS3 public UNI)

· Easily Interfaced to ATM framer ICs such as PMC-Sierra 7345 , and 7346 QJET

· Receive DS3-high and DSX3 monitor signals

· Diagnostic loop-back for AMI and digital signals

· Selectable B3ZS/HDB3 ENDEC

· Receive Line Code Violation Detector

· 128-lead TQFP package

· 3.3V or 5V operation

· Input circuit works transformer or AC coupled