MAX3627CTJ+

Overview

The MAX3627CTJ+ is a precision clock generator optimized for Ethernet networking applications. It integrates a crystal oscillator and a phase-locked loop (PLL) to generate high-frequency clock outputs with ultra-low jitter of 0.4ps RMS (12kHz to 20MHz). The device provides seven LVDS outputs and one LVCMOS output, selectable among 125MHz, 156.25MHz, and 312.5MHz frequencies. It operates from a single +3.0V to +3.6V supply within an operating temperature range of 0°C to +70°C.

Feature Summary

• Ultra-low integrated phase jitter of 0.4ps RMS (12kHz to 20MHz)
• Excellent power-supply noise rejection (-64dBc at 156.25MHz)
• Seven differential LVDS outputs and one LVCMOS output
• Integrated 25MHz crystal oscillator interface

Applications

• Ethernet Networking Equipment

Procurement Notes

Verify the package type is 32-TQFN (5x5mm) with exposed pad. Confirm the suffix '+' indicates lead-free/RoHS compliance. Ensure the operating temperature range matches the requirement of 0°C to +70°C. Check that the part number corresponds to the specific frequency selection pin configurations described in the datasheet.

Selection Notes

Select this component when low-jitter clock generation for Ethernet is required. Use FSELA and FSELB pins to configure output frequencies between 125MHz, 156.25MHz, and 312.5MHz. Note that the LVCMOS output (Q7) specifications are valid only up to 160MHz. Ensure proper decoupling and isolation of the VDDA pin for optimal performance.

Part Context

The MAX3627CTJ+ belongs to the MAX3627 series of precision clock generators manufactured by Maxim Integrated Products. It is designed specifically for network applications requiring multiple synchronized clock outputs with minimal jitter. The 'C' indicates the commercial temperature range, and 'TJ+' denotes the 32-pin TQFN package with RoHS compliance.

Replacement Considerations

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