NB3U1548CDR2G

Clock Buffers, Drivers Overview

The NB3U1548CDR2G is a 1:4 LVCMOS/LVTTL low skew 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. Propagation delay ranges from 0.7 ns to 3.5 ns depending on voltage. Quiescent current is typically 1 mA. It features an asynchronous output enable pin for high-impedance control.

Clock Buffers, Drivers Feature Summary

• Low skew 1:4 fanout buffer supporting LVCMOS and LVTTL levels
• Overvoltage tolerant inputs (up to 3.6 V) for mixed-mode applications
• Supports 3.3 V, 2.5 V, 1.8 V, and 1.5 V supply voltages
• Asynchronous output enable/disable functionality

Clock Buffers, Drivers Applications

• Clock generation in high-performance telecommunications systems
• Clock distribution in networking equipment
• Clock buffering in computing applications

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'DR2G' corresponds to the SOIC-8 package with tape and reel shipping quantity of 3,000 units. Confirm RoHS compliance and Pb-free status as indicated by the '/C0071' marking or 'G' suffix in the base model designation.

Clock Buffers, Drivers Selection Notes

Select this component when low skew clock distribution is required across multiple loads. Ensure the system voltage matches one of the supported rails (3.3V, 2.5V, 1.8V, or 1.5V). Verify that the input signal amplitude does not exceed the 3.6 V absolute maximum rating for the CLK_IN and OE pins.

Clock Buffers, Drivers Part Context

This part belongs to the NB3U1548C family of fanout buffers. The specific suffix 'CDR2G' denotes the SOIC-8 package variant supplied in a tape and reel format. Other variants in the family include the DG suffix for tubes and DT suffix for TSSOP packages.

Clock Buffers, Drivers Replacement Considerations

Direct replacements within the same family include NB3U1548CDG (SOIC-8 tube) and NB3U1548CDTR2G (TSSOP-8 tape and reel). Ensure package compatibility and thermal resistance differences are accounted for during substitution.