MAX3624AETJ2T

Overview

The MAX3624AETJ2T is a low-jitter, precision clock generator optimized for networking applications. It integrates a crystal oscillator and a phase-locked loop (PLL) clock multiplier to generate high-frequency clock outputs for Ethernet, Fibre Channel, SONET/SDH, and other networking applications. The device features ultra-low jitter of 0.36psRMS (12kHz to 20MHz) and excellent power-supply noise rejection. It operates with a supply voltage range of 3V to 3.6V and supports an operating temperature range from -40°C to +85°C. The component is housed in a 32-TQFN (5x5) package with an exposed pad.

Feature Summary

• Integrates a crystal oscillator and PLL clock multiplier for high-frequency output generation
• Ultra-low jitter performance: 0.14psRMS (1.875MHz to 20MHz) and 0.36psRMS (12kHz to 20MHz)
• Provides three LVPECL outputs and one LVCMOS output with selectable dividers
• No external loop filter capacitor required due to proprietary PLL design

Applications

• Ethernet Networking Equipment
• Fibre Channel Storage Area Network
• SONET/SDH Network

Procurement Notes

Verify the ordering suffix '2' indicates a lead(Pb)-free/RoHS-compliant package as specified in the datasheet. Confirm the supplier-device-package matches the 32-TQFN (5x5) form factor. Ensure the operating temperature range meets the system requirement of -40°C to +85°C. Check that the input frequency range aligns with the available crystal or CMOS reference sources.

Selection Notes

Select this component when designing for Ethernet, Fibre Channel, or SONET/SDH applications requiring precise clock synthesis. The device supports specific output frequencies such as 62.5MHz, 125MHz, 156.25MHz, and 312.5MHz for Ethernet. Consider the available input options including crystal frequencies between 19.375MHz and 27MHz or LVCMOS/LVTTL inputs up to 320MHz. The internal dividers allow flexibility in achieving target frequencies without external components.

Part Context

The MAX3624AETJ2T belongs to the MAX3624A family of low-jitter clock generators. The 'ETJ' designation refers to the 32-TQFN package type with an exposed pad. The suffix '2' specifically denotes a lead-free and RoHS-compliant version of the component. This part is manufactured by Microchip Technology, continuing the lineage from Maxim Integrated products.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.