NB2308AI5HDR2G

Overview

The NB2308AI5HDR2G 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 organized into two banks of four, supporting frequencies from 15 MHz to 133.3 MHz. It operates within a supply voltage range of 3.0 V to 3.6 V and supports an industrial temperature range of -40°C to +85°C. This specific variant is packaged in a 16-pin SOIC (D suffix) and supplied in tape and reel format.

Feature Summary

• Zero input-to-output propagation delay adjustable by capacitive load on the FBK input
• Input frequency range of 15 MHz to 133 MHz with output-to-output skew less than 200 ps
• Two banks of four outputs controllable by select inputs S1 and S2 for three-stating or bypass modes
• Cycle-to-cycle jitter less than 200 ps at 66.67 MHz

Applications

• Distribution of high-speed clocks in PC and workstation systems
• Clock distribution in datacom and telecom equipment
• High-performance applications requiring low-skew clock buffering

Procurement Notes

Verify the ordering suffix 'R2' corresponds to the tape and reel shipping configuration as specified in the manufacturer's documentation. Confirm the 'I' designation indicates the industrial temperature rating (-40°C to +85°C). Ensure the package type matches the required PCB footprint for the 16-pin SOIC (CASE 751B). Cross-reference the full part number against current distributor listings to confirm availability status.

Selection Notes

Select this component when a zero-delay buffer with an integrated PLL is required for distributing reference clocks up to 133 MHz. The NB2308Ax5H configuration specifically provides divided outputs (REF/2) on both banks. Ensure the application requires the industrial temperature grade and the tape-and-reel packaging format. Verify that the load capacitance requirements align with the switching characteristics defined for the -5H variant.

Part Context

This part belongs to the NB2308A family of 3.3 V zero delay clock buffers. The 'I' suffix denotes the industrial temperature operating range, while 'HD' specifies the 16-pin SOIC package. The 'R2' suffix indicates the tape and reel packaging option. Other variants in the family include commercial temperature grades and different output configurations such as x1, x2, x3, and x4.

Replacement Considerations

Direct replacements within the NB2308A family include NB2308AC5HDR2G for commercial temperature operation. For different packaging, NB2308AI5HDTR2G offers the same electrical characteristics in a TSSOP-16 package. Verify that any substitute maintains the specific x5H configuration providing divided outputs on both banks.