NB2308AC3DR2

Overview

The NB2308AC3DR2 is a commercial-grade, 3.3 V zero delay clock buffer manufactured by onsemi in a SOIC-16 package. It features an internal PLL that locks to a reference clock input and provides eight buffered outputs organized into two banks of four. The device supports frequency multiplication, delivering 4X and 2X frequencies relative to the reference input depending on the feedback configuration. Key electrical specifications include an operating supply voltage range of 3.0 V to 3.6 V, an input frequency range of 15 MHz to 133 MHz, and output-to-output skew of less than 200 ps.

Feature Summary

• Zero delay buffer with adjustable input-to-output propagation delay via capacitive load on the FBK pin
• Internal PLL supporting frequency multiplication (4X/2X) for the AC3 configuration
• Two independent banks of four outputs, each controllable via select inputs S1 and S2
• Low skew performance with output-to-output skew < 200 ps and device-to-device skew < 700 ps

Applications

• High-speed clock distribution networks requiring precise timing alignment
• System testing applications utilizing direct input bypass mode
• Multi-device clock synchronization where low inter-device skew is critical

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance status and Pb-free packaging details using current datasheets. Ensure ordering suffixes match required temperature ranges and package types. Check for product lifecycle changes or obsolescence notices prior to procurement.

Selection Notes

Select the NB2308AC3DR2 when 4X and 2X frequency multiplication is required alongside zero-delay buffering. Choose this variant over other configurations if specific bank output ratios are needed. Ensure load capacitance requirements align with the 15 pF limit for frequencies above 100 MHz. Verify that the commercial temperature range (0°C to 70°C) meets system environmental constraints.

Part Context

This part belongs to the NB2308A family of 3.3 V zero delay buffers. The 'C' suffix indicates commercial temperature operation, while 'DR2' specifies tape and reel packaging in a SOIC-16 footprint. Other family members include industrial variants (I suffix) and different frequency multiplication configurations (x1, x2, x4, x5H).

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative devices based on matching package dimensions, voltage levels, and functional equivalents within the zero delay buffer category.