MAX3625CUG+

Overview

The MAX3625CUG+ is a low-jitter precision clock generator designed for networking applications, including Ethernet and Fibre Channel. It integrates a crystal oscillator and a phase-locked loop (PLL) to generate high-frequency LVPECL outputs. The device operates on a single +3.0V to +3.6V supply within an ambient temperature range of 0°C to +70°C. Key electrical parameters include a VCO frequency range of 620MHz to 648MHz, output frequencies up to 318.75MHz, and RMS jitter of 0.14ps (1.875MHz to 20MHz). It features selectable output dividers and feedback dividers, with three differential LVPECL outputs in a 24-TSSOP package.

Feature Summary

• Integrates crystal oscillator and PLL for ultra-low jitter generation
• Three LVPECL outputs with selectable dividers for flexible frequency synthesis
• Supports input sources: Crystal (24.8MHz–27MHz) or LVCMOS (up to 320MHz)
• Excellent power-supply noise rejection without external loop filter capacitors

Applications

• Ethernet Networking Equipment
• Fibre Channel Storage Area Network
• 10Gbps Ethernet Systems

Procurement Notes

Verify the component is the MAX3625CUG+ variant, which specifies the 0°C to +70°C operating temperature range and 24-TSSOP package. Confirm RoHS compliance status as indicated by the '+' suffix. Ensure the source provides valid datasheet documentation from Maxim Integrated or Microchip Technology to validate authenticity and revision history.

Selection Notes

Select this component when low-jitter clock synthesis is required for Ethernet or Fibre Channel interfaces. Choose based on the need for LVPECL outputs and support for reference frequencies between 24.8MHz and 27MHz. Consider the 24-TSSOP package size and the specific temperature range requirements of the application environment.

Part Context

The MAX3625CUG+ belongs to the MAX3625 family of low-jitter clock generators. It is manufactured by Maxim Integrated Products, now part of Microchip Technology. The 'C' indicates the commercial temperature grade, and 'UG+' denotes the lead-free 24-TSSOP package. This part is optimized for minimizing design risk in network equipment through proprietary PLL design.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing board layouts and pin configurations if considering alternative clock generators from other manufacturers.