NB3U1548CDTR2G

Clock Buffers, Drivers Overview

The NB3U1548CDTR2G is a low skew 1:4 LVCMOS/LVTTL fanout buffer manufactured by onsemi. It supports power supplies of 3.3 V, 2.5 V, 1.8 V, and 1.5 V with input overvoltage tolerance up to 3.6 V. The device operates at clock frequencies up to 160 MHz. Key electrical parameters include a maximum output skew (tsk(o)) of 250 ps and part-to-part skew (tsk(pp)) of 800 ps. Quiescent current is typically 1 mA across all voltage ranges. It features an asynchronous output enable pin that drives outputs to a high-impedance state when disabled.

Clock Buffers, Drivers Feature Summary

• Low skew 1:4 Fanout Buffer supporting LVCMOS and LVTTL levels
• Input overvoltage tolerance up to 3.6 V for mixed-mode applications
• Supports 3.3 V, 2.5 V, 1.8 V, and 1.5 V power supplies
• Asynchronous Output Enable (OE) pin controls active or high-impedance states

Clock Buffers, Drivers Applications

• Clock generation in high performance telecommunication systems
• Clock distribution in networking equipment
• Clock distribution in computing applications

Clock Buffers, Drivers Procurement Notes

Verify the package type matches the required PCB footprint; this specific suffix indicates TSSOP-8 packaging. Confirm RoHS compliance and Pb-Free status as standard for this revision. Ensure the ordering quantity aligns with the tape and reel specification of 2,500 units per reel. Cross-reference the datasheet revision date to ensure compatibility with latest thermal and electrical characteristics.

Clock Buffers, Drivers Selection Notes

Select this component when low skew clock distribution is critical for system timing integrity. The 3.6 V input tolerance allows interfacing between different voltage domains without level shifters. Verify that the operating frequency does not exceed 160 MHz and that the supply voltage matches one of the four supported levels (3.3 V, 2.5 V, 1.8 V, or 1.5 V). Consider the thermal resistance if high ambient temperatures are expected.

Clock Buffers, Drivers Part Context

This part belongs to the NB3U1548C family of low skew fanout buffers. The 'D' suffix denotes the SOIC-8 package variant, while 'DT' denotes the TSSOP-8 package. The 'R2G' suffix indicates tape and reel packaging with RoHS compliance. Other variants include the DG suffix for tube shipping in SOIC-8 packages.

Clock Buffers, Drivers Replacement Considerations

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