DESCRIPTION
The 78P2244 is a quad channel version of the 78P2241. Each of the four channels is a complete line interface transceiver for E3, DS3, STS-1, North America T3 and ATM applications. Each channel 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
• Quad channel transmit and receive interface for E3, DS3 and STS-1 applications
• Interfaces 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