TQ8101C

The TQ8101C is a SONET/SDH transceiver that integrates Multiplexing, Demultiplexing, SONET/SDH Framing, clock synthesis PLL (MDFP), and loopback functions in a single monolithic integrated circuit. Implementation with the TQ8101C requires only a simple external RC loop filter and standard TTL and ECL power supplies. For optimal performance, the TQ8101C MDFP is packaged in a 68-pin multilayer ceramic (MLC) surface-mount package with an integral CuW heat spreader. The TQ8101C provides an integrated solution for physical interfaces intended for use in STS-12/STM-4 (622.08-Mb/s) and STS-3/STM-1 (155.52-Mb/s) SONET/SDH systems.

The TQ8101C meets ANSI, Bellcore, and ITU requirements for a SONET/ SDH device. With a 51.84-MHz reference clock, the phase-locked loop (PLL) provides 77.76-MHz or 19.44-MHz output for the multiplexer and 77.76-MHz or 19.44-MHz and 51.84-MHz output for the demultiplexer.