NB2305AC1DR2G

Overview

The NB2305AC1DR2G is a commercial-grade, 3.3 V zero delay clock buffer manufactured by onsemi. It accepts one reference input and drives five low-skew outputs using an internal PLL locked to the REF pin. The device operates within a frequency range of 15 MHz to 133 MHz. Key electrical specifications include output-to-output skew less than 250 ps, cycle-to-cycle jitter under 200 ps, and propagation delay under 350 ps. It utilizes advanced 0.35 µm CMOS technology and is supplied in an 8-pin TSSOP package.

Feature Summary

• Zero input-to-output propagation delay via internal PLL feedback
• Five buffered outputs with less than 250 ps output-to-output skew
• Cycle-to-cycle jitter guaranteed below 200 ps
• Compatible with CPU and PCI bus frequencies (15 MHz to 133 MHz)

Applications

• Distribution of high-speed clocks in Pentium-based systems
• PCI bus frequency distribution
• Multi-device clock synchronization requiring less than 700 ps device-to-device skew

Procurement Notes

Verify the ordering suffix 'R2' confirms tape and reel packaging for automated assembly. Confirm the 'C' designation indicates the commercial temperature range (0°C to 70°C). Ensure the 'G' suffix aligns with lead-free package requirements if applicable to the specific manufacturing lot.

Selection Notes

Select this component when a single reference clock must drive five loads with minimal skew. Ensure the load capacitance is 30 pF for frequencies below 100 MHz or 10 pF for frequencies between 100 MHz and 133 MHz. All outputs, including CLKOUT, must be uniformly loaded to maintain zero input-to-output delay characteristics.

Part Context

This part belongs to the NB2305A family of 3.3 V zero delay buffers. The 'C' suffix denotes the commercial operating temperature range, while 'I' would indicate industrial range. The '1' specifies the base drive strength, distinct from the '-1H' high-drive variants which offer faster rise and fall times.

Replacement Considerations

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