Clock And Data Recovery Chip Has CML Outputs

Designed for both section-regenerator, terminal-receiver, and switch-core applications in OC-48/STM-16 transmission systems, the MAX3876 is a compact, low-power clock recovery and data re-timing IC for 2.488 Gbps SDH/SONET applications. When used with the MAX3831 2.5 Gbps interconnect mux/demux, the 3.3V, 2.5 Gbps chip with CML outputs forms a complete backplane transceiver solution. The IC operates from a single 3.3V to 5.0V supply, consuming only 445 mW of power at 3.3V. The fully integrated phase-locked loop recovers a synchronous clock signal from the serial NRZ data input, which is retimed by the recovered clock. Typical jitter tolerance at 100 kHz exceeds the SDH/SONET specification. Differential CML outputs are provided for both clock and data signals and an additional 2.488 Gbps serial input is available for system loopback diagnostic testing. Housed in a 32-pin TQFP package, the clock and data recovery IC is priced from $49.95 each/1,000.