SY89537LMH TR

SY89537L 3.3V Precision LVPECL and LVDS Programmable Multiple Output Bank Clock Synthesizer and Fanout Buffer General Description The SY89537L integrated programmable clock synthesizer and fanout is part of a precision PLLbased clock generation family optimized for enterprise switch, router, and multiprocessor server applications. This family is ideal for generating internal system timing requirements up to 700MHz for multiple ASICs, FPGAs, and NPUs. These devices integrate the following blocks into a single monolithic IC: • PLL (Phase-Lock-Loop) based synthesizer • Fanout buffers • Clock generator (dividers) • Logic translation (LVPECL, LVDS) • Five independently programmable output banks This level of integration minimizes additive jitter and part-to-part skew associated with discrete alternatives, resulting in superior system-level timing with reduced board space and power. For applications that require a zero-delay function, see the SY89538L. All support documentation can be found on Micrel’s web site at: www.micrel.com. Applications • Enterprise routers, switches, servers and workstations • Parallel processor-based systems • Internal system clock generation for ASICs, NPUs, FPGAs Markets • LAN/WAN • Enterprise servers • Test and measurement Precision Edge® Features • Integrated programmable synthesizer with multiple output dividers, fanout buffers, and clock drivers • Direct interface to crystal: 14MHz to 18MHz • Input MUX accepts a reference and a crystal (XTAL) source – Ideal for reference backup clock source or system test frequency source – Patent-pending unique input MUX isolates XTAL and reference inputs minimizes crosstalk • Guaranteed AC performance: – 87.15MHz to 700MHz output frequency range (with RFCK at 16.6MHz) –