NB2308AI1HDTG

Overview

The NB2308AI1HDTG is a 3.3 V zero delay clock buffer manufactured by onsemi, utilizing advanced 0.35 µm CMOS technology. It features an internal phase-locked loop (PLL) that locks to a reference clock input on the REF pin, with feedback provided via the FBK pin. The device provides eight outputs divided into two banks of four, controlled by select inputs S1 and S2. It supports an input frequency range of 15 MHz to 133 MHz and guarantees less than 250 ps input-to-output propagation delay and less than 200 ps output-to-output skew. The part operates within a supply voltage range of 3.0 V to 3.6 V and is housed in a TSSOP-16 package.

Feature Summary

• Zero delay buffer with adjustable input-to-output propagation delay based on capacitive load on the FBK input.
• Two banks of four outputs each, allowing independent three-stating via S1 and S2 select inputs.
• Low-skew performance with guaranteed output-to-output skew under 200 ps and device-to-device skew under 700 ps.
• Cycle-to-cycle jitter specification of less than 200 ps at 66.67 MHz.

Applications

• Distribution of high-speed clocks in digital systems.
• Clock buffering for multiple loads requiring low skew.
• System testing applications using direct input clock bypass mode.

Procurement Notes

Verify the industrial temperature rating (-40°C to +85°C) and the specific 'H' suffix indicating the high-drive version. Confirm the TSSOP-16 packaging format matches the design requirements. Ensure the ordering suffix aligns with the desired shipping quantity, such as rail or tape and reel options available for this series.

Selection Notes

Select the NB2308AI1HDTG when a high-drive capability is required alongside standard reference frequency distribution. This variant differs from the non-H versions by offering faster rise and fall times. Verify that the application requires the industrial temperature range and that the TSSOP-16 footprint is compatible with the PCB layout constraints.

Part Context

This component belongs to the NB2308A family of zero delay buffers. The 'I' suffix denotes the industrial operating temperature range, while 'H' indicates the high-drive output configuration. The 'DT' suffix specifies the TSSOP-16 package type. Other variants in the family include different drive strengths, frequency multiplication capabilities, and commercial temperature ratings.

Replacement Considerations

Direct replacements within the same family include NB2308AC1HDTG for commercial temperature operation or NB2308AI1DT for standard drive strength. For alternative packages, NB2308AI1HDG offers the SOIC-16 form factor. Ensure any substitute maintains the required high-drive characteristics and industrial temperature range.