SY58021U - Micrel Semiconductor

SY58021U 1:4 LVPECL Fanout Buffer/Translator

The SY58021U is a 2.5V/3.3V precision, high-speed, fully differential 1:4 LVPECL fanout buffer. Optimized to provide four identical output copies with less than 15ps output skew and only 70 fsRMS phase jitter, the SY58021U can process clock signals as fast as 4GHz. The differential input includes Micrel’s unique, 3-pin input termination architecture interfac.

Features

Precision Edge®
• Precision 1:4 LVPECL fanout buffer
• Low jitter performance: − 70fsRMS phase jitter (typical)
• Accepts an input signal as low as 100mV
• Unique input termination and VT pin accepts DCcoupled and AC-coupled differential inputs: LVPECL, LVDS, and CML
• 100k LVPECL-compatible 800mV swing output
• Power supply 2.5V ±5% and 3.3V ±10%
• −40°C to +85°C temperature range
• Available in 16-pin (3mm × 3mm) QFN package Applications
• All SONET and GigE clock distribution
• Fibre Channel clock and data distribution
• Backplane distribution
• High-end, low-skew, multiprocessor, synchr.