NB2304AC1DR2G

Overview

The NB2304AC1DR2G is a 3.3 V zero delay clock buffer manufactured by onsemi, designed for high-speed clock distribution in PC, workstation, datacom, and telecom applications. It features an on-chip PLL that locks to an input clock presented on the REF pin, with feedback driven to the FBK pin. The device guarantees an input-to-output propagation delay of less than 250 ps and output-to-output skew of less than 200 ps. It operates within a supply voltage range of 3.0 V to 3.6 V and supports input frequencies from 15 MHz to 133 MHz. The component is housed in an 8-pin SOIC package.

Feature Summary

• Zero Input-Output Propagation Delay adjustable by capacitive load on FBK input
• Input Frequency Range: 15 MHz to 133 MHz
• Output-Output Skew < 200 ps; Device-Device Skew < 500 ps
• Two Banks of Four Outputs (CLKA1, CLKA2, CLKB1, CLKB2)

Applications

• PC clock distribution
• Workstation clock distribution
• Datacom systems
• Telecom equipment

Procurement Notes

Verify the ordering suffix 'R2G' corresponds to the Tape & Reel shipping configuration containing 2500 units per reel. Confirm the 'C' designation indicates Commercial temperature operation (0°C to 70°C). Ensure the package type matches the SOIC-8 (CASE 751) dimensions specified in the datasheet.

Selection Notes

Select this part when zero delay buffering is required for single-frequency clock distribution. The NB2304Ax1 configuration outputs reference frequency on all banks. Ensure output loading is equal across all pins to maintain zero input-output delay characteristics. Verify that the 3.3 V supply voltage aligns with the system power rails.

Part Context

This component belongs to the NB2304A family of 3.3 V Zero Delay Clock Buffers. It is functionally similar to other variants such as NB2304AI1HDG and NB2304AC2D, differing primarily in temperature rating, drive strength, and specific frequency multiplication configurations available in the broader series.

Replacement Considerations

Direct replacements within the same family include NB2304AC1DG (Rail), NB2304AI1DR2G (Industrial Temp), NB2304AC1HDR2G (High Drive), and NB2304AC2DR2G (Frequency Divider/Multiplier). Cross-vendor equivalents like Cypress CY2305 may require schematic review due to potential pinout or feature differences.