NB2308AC2D

Overview

The NB2308AC2D is a commercial-grade, 3.3 V zero delay clock buffer manufactured by onsemi in a 16-pin SOIC package. It features an integrated PLL that locks to a reference clock input and provides eight buffered outputs organized into two banks of four. The device supports multiple frequency configurations based on the feedback source selection. Electrical specifications include an operating temperature range of 0°C to 70°C, a supply voltage range of 3.0 V to 3.6 V, and an input frequency range of 15 MHz to 133 MHz.

Feature Summary

• Zero Delay Buffer with adjustable input-to-output propagation delay via capacitive load on the FBK pin
• Configurable output frequencies including 1X, 2X, and 4X reference depending on feedback path selection
• Low skew performance with output-to-output skew less than 200 ps and device-to-device skew less than 700 ps
• Two independent banks of four outputs controllable via S1 and S2 select inputs for three-stating or direct drive

Applications

• High-speed clock distribution networks requiring low skew
• System testing applications utilizing direct input clock bypass mode
• Multi-device synchronization where inter-device skew must be minimized

Procurement Notes

Verify component authenticity through authorized channels as counterfeit risks exist for legacy parts. Confirm RoHS compliance status if lead-free packaging is required for assembly processes. Check current availability as this specific commercial variant may have limited stock compared to industrial versions or tape-and-reel options.

Selection Notes

Select the NB2308AC2D when a commercial temperature range (0°C to 70°C) is sufficient and a rail package is preferred over tape-and-reel. Choose this model over the -1H or -5H variants if standard drive strength is adequate, as those offer faster rise/fall times. Ensure the application utilizes Bank A or Bank B feedback to achieve the desired 2X frequency configuration supported by the AC2 suffix.

Part Context

This part belongs to the NB2308A family of zero delay buffers. The 'C' suffix denotes the commercial temperature grade, while '2' indicates the specific frequency multiplication configuration where connecting Bank A to feedback yields 2X outputs on Bank B. Other family members include the AI series for industrial temperatures and different suffixes for varying frequency ratios and drive strengths.

Replacement Considerations

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