NB2309AI1DR2G

Overview

The NB2309AI1DR2G is a Zero Delay Buffer integrated circuit manufactured by onsemi, designed for clock distribution in high-speed digital systems. It features a single-phase PLL with bypass capability and provides one input to nine outputs (1:9 ratio). The device operates within a supply voltage range of 3V to 3.6V and supports maximum frequencies up to 133.33MHz. It is housed in a 16-SOIC package (0.154 inch width) and functions across an industrial temperature range of -40°C to +85°C. The component is RoHS compliant and has reached end-of-life status.

Feature Summary

• Zero Delay Buffer architecture ensuring minimal output skew relative to the input clock
• Single PLL with bypass mode for flexible clock routing
• 1:9 Input-to-Output ratio providing nine buffered clock signals
• Maximum operating frequency of 133.33MHz

Applications

• High-performance computing systems requiring precise clock synchronization
• Telecommunications infrastructure equipment
• Network switches and routers

Procurement Notes

This component has officially reached End-of-Life (EOL) status as per Product Change Notification dated March 29, 2022. Verification of availability should focus on surplus or obsolete stock channels rather than standard manufacturing pipelines. Buyers must confirm the specific revision level and packaging type (Tape & Reel or Cut Tape) when sourcing from third-party distributors, as original production has ceased.

Selection Notes

Select this part for applications requiring a 1:9 fan-out buffer with zero delay characteristics at frequencies up to 133.33MHz. Ensure the design accommodates the 3V to 3.6V supply voltage range. Due to the EOL status, alternative solutions such as the PL123-09SC from Microchip Technology should be evaluated for new designs. Verify that the 16-SOIC package dimensions fit the target PCB layout constraints.

Part Context

The NB2309AI1DR2G belongs to the NB2309A family of 3.3V Zero Delay Clock Buffers from onsemi. This series is engineered to distribute clock signals with minimal jitter and skew. Related variants in the same family include the NB2308AI1DR2G, which offers an 1:8 output ratio, and the NB2305AI1DTR2G, which provides five outputs in a TSSOP-8 package. All share similar electrical specifications and zero-delay functionality.

Replacement Considerations

Publicly confirmed substitute part numbers include PL123-09SC and PL123-09SC-R from Microchip Technology. These are listed as similar replacements.