NB2305AC1DTG

Overview

The NB2305AC1DTG 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 Phase Locked Loop (PLL). The device operates within a frequency range of 15 MHz to 133 MHz and utilizes advanced 0.35 µm CMOS technology. Key electrical specifications include an output-to-output skew of less than 250 ps, device-to-device skew under 700 ps, and cycle-to-cycle jitter below 200 ps. The part is housed in an 8-pin TSSOP package with a supply voltage range of 3.0 V to 3.6 V.

Feature Summary

• Zero Input-Output Propagation Delay via internal PLL feedback
• Five buffered clock outputs with skew < 250 ps
• Operating frequency range from 15 MHz to 133 MHz
• Cycle-to-cycle jitter specification of less than 200 ps

Applications

• Distribution of high-speed clocks in PC systems
• Workstation clock distribution networks
• Datacom and telecom equipment requiring low-jitter timing
• Pentium/C0082 based system architectures

Procurement Notes

Verify the specific suffix 'C1' confirms the commercial temperature range (0°C to 70°C) and 'DT' indicates the TSSOP-8 package. Confirm RoHS compliance status as the datasheet notes Pb-Free packages are available but requires checking the specific ordering code against current manufacturer lists for environmental declarations.

Selection Notes

Select this component when a single-ended reference clock must be distributed to five loads with minimal skew. Ensure the load capacitance is matched across all outputs, including CLKOUT, to maintain zero input-output delay. For industrial environments (-40°C to 85°C), the 'I' suffix variant is required instead of the 'C' suffix used here.

Part Context

This part belongs to the NB2305A family of 3.3 V zero delay buffers. The 'C1' designation identifies it as the base drive version operating in the commercial temperature range. Higher drive variants exist with the 'H' suffix (e.g., NB2305AC1HDG), which offer faster rise and fall times compared to the standard -1 devices.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified source material.