SY56572XRMG

Clock Buffers, Drivers Overview

The SY56572XRMG is a fully differential, low-voltage CML 4:1 multiplexer with input equalization and an integrated 1:2 fanout buffer. It processes clock signals up to 4.5 GHz or data patterns up to 6.4 Gbps. The device operates from a 2.5V ±5% core supply (VCC) and a selectable 1.2V, 1.8V, or 2.5V ±5% output supply (VCCO). It features a unique 3-pin input termination architecture for DC-coupled LVPECL, CML, or LVDS signals, and includes an internal voltage reference for AC-coupled applications. The component supports three-level input equalization control and guarantees performance over the industrial temperature range of –40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• Supports throughput speeds up to 6.4 Gbps with propagation delay under 360ps.
• Features ultra-low jitter design with less than 0.8ps RMS random jitter and 10ps peak-to-peak deterministic jitter.
• Includes three-level input equalization control optimized for 9, 18, or 27-inch FR4 transmission lines.
• Provides flexible interface compatibility via a 3-pin input termination architecture supporting LVPECL, CML, and LVDS.

Clock Buffers, Drivers Applications

• Data distribution systems
• SONET clock and data distribution
• Fiber Channel clock and data distribution
• Gigabit Ethernet clock and data distribution

Clock Buffers, Drivers Procurement Notes

Verify that the specific part number corresponds to the Micrel SY56572XR datasheet M9999-041510-A. Confirm the package type is the 32-pin QFN (5mm x 5mm) and check for the Pb-Free bar-line indicator on the marking. Ensure the operating range matches the Industrial specification (-40°C to +85°C).

Clock Buffers, Drivers Selection Notes

Select this component when high-speed signal routing requires a 4:1 mux with built-in fanout buffering. Choose based on the required output voltage swing by setting VCCO to 1.2V, 1.8V, or 2.5V. Consider the integrated equalization feature if driving long PCB traces, specifically 9, 18, or 27-inch FR4 striplines.

Clock Buffers, Drivers Part Context

The SY56572XRMG belongs to Micrel’s Precision Edge product line, designed for high-speed digital applications. It integrates a 4:1 multiplexer and a 1:2 fanout buffer into a single low-voltage CML device. The 'RMG' suffix indicates the 32-pin QFN package with industrial temperature rating and lead finish specifications.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for current alternatives within the Precision Edge portfolio.