NB2304AC2DG

Overview

The NB2304AC2DG is a commercial-grade, 3.3 V zero delay clock buffer manufactured by onsemi in an 8-pin SOIC package. It features an internal PLL that locks to a reference clock input and distributes it across four outputs organized into two banks. The device supports an input frequency range of 15 MHz to 133 MHz with a supply voltage between 3.0 V and 3.6 V. Key electrical specifications include an input-to-output propagation delay of less than 250 ps, output-to-output skew under 200 ps, and cycle-to-cycle jitter below 200 ps. The -C2 configuration allows for selectable frequencies including REF, 1/2 X, and 2X depending on the feedback connection.

Feature Summary

• Zero delay buffer with adjustable input-output propagation delay via capacitive load on the FBK pin
• Internal PLL supporting input frequencies from 15 MHz to 133 MHz
• Two banks of outputs allowing configurable REF, 1/2 X, or 2X frequencies
• Low skew performance with output-to-output skew < 200 ps and device-to-device skew < 500 ps

Applications

• PC and workstation clock distribution
• Datacom equipment timing
• Telecommunications systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and shipping quantity. The 'DG' suffix indicates a tube shipment in an SOIC-8 package. Confirm RoHS compliance status and industrial versus commercial temperature ratings prior to procurement.

Selection Notes

Select the NB2304AC2DG when a commercial temperature range (0°C to 70°C) is sufficient and a 1:4 fanout with programmable frequency multiplication or division is required. Ensure the application can accommodate the necessary capacitive loading on the FBK pin to achieve the desired zero-delay characteristics and low skew requirements.

Part Context

This component belongs to the NB2304A family of 3.3 V zero delay buffers. The AC2 variant specifically provides flexible frequency options (Reference, Half, Double) based on feedback routing, distinguishing it from the AC1 variants which provide standard buffered reference outputs.

Replacement Considerations

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