NB2304AC2DR2G

Overview

The NB2304AC2DR2G is a commercial-grade, 3.3 V zero delay clock buffer manufactured by onsemi. It features an integrated PLL that locks to an input clock presented on the REF pin, with feedback driven from one of the outputs to the FBK pin. The device provides four buffered clock outputs organized into two banks (Bank A and Bank B). Key electrical specifications include a maximum operating frequency of 133.3 MHz, an input-to-output propagation delay of less than 250 ps, and output-to-output skew of less than 200 ps within the same bank. It operates within a supply voltage range of 3.0 V to 3.6 V.

Feature Summary

• Zero input-output propagation delay adjustable via capacitive load on the FBK input
• Configurable output frequencies including Reference, 1/2 X, and 2X based on feedback source
• Low-skew performance with output-to-output skew < 200 ps and device-to-device skew < 500 ps
• Cycle-to-cycle jitter less than 200 ps for loaded outputs at 66.67 MHz

Applications

• PC and workstation clock distribution
• Datacom and telecom high-performance applications
• Systems requiring multiple low-skew clock outputs

Procurement Notes

Verify the ordering suffix 'R2G' corresponds to the 2500-unit tape and reel packaging format. Confirm the 'C' designation indicates the commercial temperature range (0°C to 70°C) and that the component is lead-free. Ensure the specific configuration requirements for the '-2' variant are met before procurement.

Selection Notes

Select this part when a 1:4 clock distribution ratio with configurable frequency multiplication or division is required. The '-2' suffix indicates a configuration where Bank A outputs the reference frequency and Bank B outputs either half or double the reference frequency depending on the feedback connection. Verify that the load capacitance requirements (15 pF for >100 MHz, 30 pF otherwise) align with the target circuit design.

Part Context

This component belongs to the NB2304A family of 3.3 V zero delay buffers. The NB2304AC2DR2G specifically denotes the commercial temperature version in the '-2' configuration, packaged in an SOIC-8 tube or tape and reel. It shares the core PLL architecture with variants like NB2304AC1DR2G but differs in output frequency configuration capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.