MAX3270

19-0379; Rev 1; 11/99 MAX3270 155Mbps/622Mbps Clock Recovery and Data Retiming IC with Fully Integrated Phase/Frequency Detector _______________General Description The MAX3270 is a complete Clock Recovery and Data Retiming IC for 155Mbps and 622Mbps SDH/SONET and ATM applications. The MAX3270 meets Bellcore and CCITT jitter tolerance specifications ensuring errorfree data recovery. Recovered clock and data are phase aligned using a fully integrated phase-locked loop (PLL). An output frequency monitor (FM) is included to detect loss of PLL acquisition or a loss of input data. The MAX3270 has differential ECL input and output interfaces, so it is less susceptible to noise in a highfrequency environment. The fully integrated PLL includes an integrated phase-frequency detector that eliminates the need for external references. ________________________Applications 155Mbps (STM-1/OC-3)/622Mbps (STM-4/ OC-12) SDH/SONET Transmission Systems 155Mbps/622Mbps ATM/SONET Access Nodes Add/Drop Multiplexers Cross-Connects ____________________________Features o Supports Both 155Mbps and 622Mbps Clock Recovery and Data Retiming o Fully Integrated Phase/Frequency Detector o Capable of Switching to an External Clock o Differential 100K ECL Data and Clock I/Os o Output Monitor Provides Lock Detection o No External Reference Clock Required PART MAX3270EMH Ordering Information TEMP. RANGE -40°C to +85°C PIN-PACKAGE 44 MQFP Pin Configuration appears at end of data sheet. __________________...