The TQ8103 is a monolithic clock and data recovery (CDR) IC that receives NRZ data, extracts the high-speed clock, and presents the separated data and clock as its outputs. This device is designed specifically for SONET OC-12 and SDH STM-4 applications at 622 Mb/s.

Features

• Single-chip CDR circuit for 622 Mb/s data

• Exceeds Bellcore and ITU jitter tolerance maps

• Single-ended ECL input has loopthrough path for external 50 ohm termination to minimize stubs and reflections

• Clock and data outputs are differential ECL

• Provides complete high-speed OC-12/STM-4 solution when used with TQ8101 or TQ8105 Mux/Demux/Framer/PLL

• External loop filter requires simple passive network

• Maintains clock in absence of data

• 28-pin leaded chip carrier

• Can be used with a high-speed external clock