SY55859LMG

Signal Switches, Multiplexers, Decoders Overview

The SY55859LMG is a dual CML 2x2 crosspoint switch optimized for high-speed data and clock applications up to 3.2 Gbps or 2.7 GHz. It operates from a +3.3V ±10% supply voltage within an industrial temperature range of –40°C to +85°C. The device features low jitter, including 2ps RMS random jitter and 5ps peak-to-peak deterministic jitter. It utilizes a 32-pin EPAD-QFN package with internal 50Ω input termination and 50Ω source output termination.

Signal Switches, Multiplexers, Decoders Feature Summary

• Pin-for-pin, plug-in compatible with the MAX3840
• Low jitter performance with 2ps RMS random jitter and 5ps peak-to-peak deterministic jitter
• Power-saving output disable feature that powers down unused outputs
• Fast CML outputs with rise/fall times under 100ps

Signal Switches, Multiplexers, Decoders Applications

• SONET/SDH optical transport
• High-speed backplane redundancy
• Add-drop multiplexers

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix (e.g., TR for tape and reel) against the manufacturer's official documentation to ensure correct packaging and lead finish specifications. Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing standards. Ensure proper handling procedures are followed due to moisture sensitivity classification.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when pin compatibility with the MAX3840 is required for existing designs. Consider it for applications demanding low jitter and skew in high-speed data routing. Evaluate the need for power-saving features if managing thermal constraints in dense layouts. Verify interface compatibility with CML, LVPECL, or TTL control signals as specified in the datasheet.

Signal Switches, Multiplexers, Decoders Part Context

The SY55859L belongs to Micrel's SuperLite family of crosspoint switches. It serves as a direct replacement for the Maxim MAX3840, facilitating easier upgrades or design iterations. The device integrates fully differential I/O architecture optimized for 50Ω transmission lines, simplifying high-speed signal integrity management without external termination components.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The SY55859LMI is a confirmed pin-compatible substitute for the MAX3840EGJ. Verify electrical characteristics and package markings to ensure seamless integration into existing hardware designs requiring equivalent functionality.

Signal Switches, Multiplexers, Decoders FAQ

How does the SY55859LMG handle unused outputs?

The device includes a power-saving output enable feature. Setting the corresponding TTL input inactive low powers down the unused outputs, reducing overall power consumption.

What is the maximum data rate supported by the SY55859LMG?

The SY55859LMG supports a maximum NRZ data rate of 3.2 Gbps and a maximum clock rate of 2.7 GHz.