NB2872ASNR2G

Overview

The NB2872ASNR2G is a clock/frequency synthesizer integrated circuit manufactured by onsemi. It operates within a supply voltage range of 3V to 3.6V and supports a maximum frequency of 30MHz. The device features one circuit with a 1:2 input-to-output ratio, utilizing CMOS inputs (supporting crystal or CMOS signals) and CMOS outputs. It incorporates a Phase-Locked Loop (PLL) for frequency synthesis but does not include divider or multiplier functions. The component is housed in a SOT-23-6 Thin (TSOT-23-6) package and is designed for surface mount installation. It functions reliably across an operating temperature range of 0°C to 70°C.

Feature Summary

• Integrated PLL-based clock/frequency synthesizer with 30MHz maximum frequency
• CMOS input/output interface supporting crystal or CMOS signal sources
• Single circuit configuration with 1:2 input-to-output ratio
• Compact TSOT-23-6 surface-mount packaging

Applications

• Clock generation for digital systems requiring 30MHz or lower frequencies
• Frequency synthesis in embedded devices using CMOS logic levels
• Timing reference distribution in consumer electronics

Procurement Notes

The NB2872ASNR2G is officially listed as obsolete by the manufacturer. Availability is restricted to secondary market distributors such as Rochester Electronics, LLC. Verification of part authenticity and condition is critical when sourcing from non-original channels due to the discontinued status.

Selection Notes

Designers should verify compatibility with the required 3V to 3.6V supply voltage and ensure the application utilizes CMOS-compatible signaling. The fixed 1:2 ratio and lack of programmable dividers/multipliers limit flexibility compared to configurable synthesizers. The TSOT-23-6 package requires appropriate footprint design for surface mount assembly.

Part Context

This component belongs to the NB2872 family of clock synthesizers from onsemi. It is distinct from other models like the NB2969ASNR2G, which operates at lower frequencies (up to 13MHz) and different voltage ranges. The NB2872 series focuses on simple, fixed-ratio frequency synthesis for standard digital timing applications.

Replacement Considerations

As the part is obsolete, direct substitutes are not publicly confirmed. Designers may need to evaluate alternative clock synthesizers from onsemi or other manufacturers that offer similar 30MHz capabilities, CMOS I/O, and compatible packaging.