NB2579ASNR2

Overview

The NB2579ASNR2 is a low power reduced EMI clock synthesizer IC from onsemi, designed for applications requiring precise frequency generation with minimized electromagnetic interference. Operating at supply voltages of 3.3 V or 2.5 V, this component integrates a phase-locked loop (PLL) to generate stable clock signals. It supports CMOS and crystal inputs, delivering a single output with a 1:1 ratio and 50% duty cycle. The device is housed in a compact SOT-23-6 thin package, suitable for surface mount assembly in space-constrained designs.

Feature Summary

• Integrates a phase-locked loop for stable clock signal generation
• Designed to reduce electromagnetic interference in sensitive circuits
• Supports both CMOS and crystal input configurations
• Operates efficiently at standard 3.3 V and 2.5 V supply levels

Applications

• General clock distribution in embedded systems
• Timing reference generation for digital logic interfaces
• Low power consumer electronics requiring precise timing
• Industrial control modules needing reduced EMI compliance

Procurement Notes

Verify the RoHS status carefully, as documentation indicates potential lead compatibility issues. Confirm the specific suffix 'SNR2' matches your required tape and reel packaging specifications. Ensure the operating voltage range aligns with your system's 2.5 V or 3.3 V rails before finalizing procurement orders to avoid functional mismatches.

Selection Notes

Select this component when minimizing EMI is critical alongside low power consumption. It is ideal for designs requiring a single differential or single-ended output derived from a PLL. Consider the SOT-23-6 package size for tight board layouts. Ensure input source compatibility with either CMOS signals or external crystals to utilize the integrated frequency synthesis capabilities effectively.

Part Context

This part belongs to onsemi’s NB25 series of clock generators and frequency synthesizers. These components are engineered to provide reliable timing solutions for modern electronic systems. The NB2579A variant specifically focuses on reducing radiated emissions while maintaining low current consumption, making it a suitable choice for portable and high-density digital applications.

Replacement Considerations

Check for direct pin-compatible substitutes within the NB25xx family that offer similar frequency ranges. Verify if alternative packages like TSOT-23-6 are acceptable for your PCB layout. Ensure any replacement maintains the same 3.3 V/2.5 V operation and PLL functionality without altering the system's timing requirements.