MAX3674ECM2T

Clock Generators, PLLs, Frequency Synthesizers Overview

The MAX3674ECM2T is a high-performance dual-output network clock synthesizer designed for networking, computing, and telecom applications. It integrates a crystal oscillator, low-noise phase-locked loop (PLL), programmable dividers, and LVPECL output buffers. The device generates output frequencies from 21.25MHz to 1360MHz with excellent jitter performance, including cycle-to-cycle jitter of 1.6ps RMS and period jitter of 0.9ps RMS at 500MHz. It operates on a +3.3V supply, consuming typically 396mW, and is housed in a 48-pin LQFP package with an operating temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual differential LVPECL outputs with synchronous stop functionality
• Cycle-to-cycle jitter of 1.6ps RMS and period jitter of 0.9ps RMS at 500MHz
• On-chip crystal oscillator or selectable LVCMOS reference clock input
• Parallel or 2-wire I2C programming interface for frequency margining

Clock Generators, PLLs, Frequency Synthesizers Applications

• Ethernet Network ASIC Clock Generation
• Storage Area Network ASIC Clocking
• Optical Network ASIC Clocking
• Programmable Clock Source for Server, Computing, or Communication Systems
• Frequency Margining

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the suffix '2' indicates a lead-free/RoHS-compliant package. Confirm the 48-pin LQFP form factor matches the design requirements. Ensure the -40°C to +85°C industrial temperature range aligns with the operational environment. Cross-reference the specific revision level if critical for legacy system compatibility.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when dual LVPECL outputs are required for high-frequency clock distribution. The integrated PLL and crystal oscillator simplify design by reducing external component count. Consider the I2C interface for dynamic frequency adjustment capabilities. Ensure the power supply noise rejection meets the system's jitter sensitivity requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MAX3674ECM2T belongs to the MAX3674 family of high-performance network clock synthesizers. The 'ECM' designation specifies the 48-pin LQFP package and industrial temperature range. The '2' suffix denotes compliance with lead-free and RoHS standards. This part is manufactured by Microchip Technology, formerly Maxim Integrated.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.