SY58607UMG-TR

Clock Buffers, Drivers Overview

The SY58607UMG-TR is a high-speed, fully differential 1:2 LVPECL fanout buffer from Microchip Technology. It operates on a 2.5V ±5% or 3.3V ±10% supply within the industrial temperature range of –40°C to +85°C. The device processes clock signals up to 2.5 GHz and data patterns up to 3.2 Gbps. Key electrical parameters include a propagation delay of less than 350 ps (IN-to-Q), within-device skew under 20 ps, and rise/fall times under 110 ps. It features an additive phase jitter of 41 fs at 622 MHz and includes fail-safe input functionality to prevent output oscillation during invalid input conditions.

Clock Buffers, Drivers Feature Summary

• Precision 1:2 LVPECL Fanout Buffer with guaranteed AC performance over temperature and voltage
• Ultra-low jitter design with 41 fs additive phase jitter at 622 MHz
• Fail-Safe Input (FSI) prevents outputs from oscillating when the input signal is invalid or absent
• Integrated 3-lead input termination architecture supporting LVPECL, LVDS, or CML signals without external level-shifting

Clock Buffers, Drivers Applications

• SONET Clock and Data Distribution
• Fibre Channel Clock and Data Distribution
• Gigabit Ethernet Clock And Data Distribution
• Backplane Distribution

Clock Buffers, Drivers Procurement Notes

Verify that the ordering suffix '-TR' corresponds to the tape and reel packaging configuration containing 1,000 units per reel. Confirm the package type is the 16-lead 3 mm x 3 mm QFN (M). Ensure the temperature grade 'G' matches the required industrial range of –40°C to +85°C. Cross-reference the datasheet revision DS20006227A for the most current specifications.

Clock Buffers, Drivers Selection Notes

Select this component for applications requiring low-skew distribution of LVPECL signals. It is suitable for interfacing with LVDS or CML sources due to its internal termination and lack of required external resistors in the signal path. Consider alternative models like the SY58606U or SY58608U if different output swings such as 400 mV or 325 mV are required instead of the standard 800 mV LVPECL swing.

Clock Buffers, Drivers Part Context

The SY58607UMG-TR belongs to Microchip’s Precision Edge® product line of high-speed buffers. It was originally developed by Micrel before being acquired by Microchip Technology. The device is designed to provide two identical output copies with minimal skew, optimizing signal integrity for high-speed digital systems.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. For different output swings, consider the SY58606U (400 mV) or SY58608U (325 mV). Verify pin compatibility and electrical characteristics before substituting any other devices.

Clock Buffers, Drivers FAQ

How does the Fail-Safe Input (FSI) feature function?

The FSI circuit senses the input signal amplitude. If the signal drops below approximately 100 mVpk (typically 30 mVpk) or is absent, it latches the outputs to their last valid state, preventing metastability and oscillation.

What is the maximum throughput frequency supported by the SY58607U?

The device supports data patterns up to 3.2 Gbps and clock frequencies up to 2.5 GHz (or 3.0 GHz with VOUT > 400 mV).

Can the SY58607U interface directly with LVDS or CML signals?

Yes, the differential input accepts DC-coupled differential signals as small as 100 mV (200 mVpp) from LVDS or CML sources without requiring external level-shifting or termination resistor networks in the signal path.