MAX24505EXG2

Clock Generators, PLLs, Frequency Synthesizers Overview

The MAX24505EXG2 is a high-performance clock multiplier and synthesizer featuring two independent All-Pass Loop PLLs (APLLs) housed in an 81-pin CSBGA package. It supports input frequencies from 9.72MHz to 750MHz, generating up to five differential output clocks via integer dividers. The device achieves typical output jitter of 0.18–0.3ps RMS for integer multiplication and 0.25–0.4ps RMS for fractional multiplication within the 12kHz to 20MHz integration band. Operating voltages include 1.8V and 3.3V supplies, with an operating temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Two independent APLLs supporting any-to-any frequency conversion with high-resolution fractional-N multiplication.
• Five low-jitter differential outputs (CML or 2xCMOS) with per-output independent dividers and delay adjustment.
• Internal EEPROM enables automatic self-configuration at power-up without external programming.
• SPI processor interface and JTAG boundary scan support for register access and testing.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Frequency synthesis for Ethernet standards including 25MHz, 125MHz, and 156.25MHz.
• SONET/SDH clock generation for telecom applications such as 622.08MHz.
• Synchronous Ethernet clock distribution.
• PCIe-compliant clock generation for Gen 1, 2, and 3 interfaces.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the '2' suffix indicates a lead-free/RoHS-compliant package. Confirm the 81-CSBGA pinout matches the target PCB layout. Ensure supply rails are stable within ±5% tolerance for VDD_18 and VDD_33 domains. Check that the internal EEPROM configuration script meets system requirements before deployment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model over the MAX24510 when only five output clocks are required. Verify input signal compatibility; differential inputs support up to 750MHz, while CMOS/TTL inputs are limited to 160MHz. Ensure the application requires sub-ps jitter performance suitable for high-speed serial links. Confirm SPI master availability for dynamic register reconfiguration if needed.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the MAX24505/MAX24510 family of flexible clock multipliers. The MAX24505 variant provides five outputs, whereas the MAX24510 offers ten outputs using the same 81-pin footprint. Both share identical APLL architecture and control interfaces, differing primarily in output count and associated power consumption.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MAX24510EXG2 is a functional substitute offering ten outputs instead of five, maintaining pin compatibility. No other direct cross-model replacements are documented in the provided datasheet.