NB3M8304CDR2G

Clock Buffers, Drivers Overview

The NB3M8304CDR2G is a 1:4 fanout buffer with LVCMOS/LVTTL input and output, manufactured by onsemi. It supports a core supply voltage of 3.3 V (VDD) and an output supply voltage of either 2.5 V or 3.3 V (VDDO). The device operates within an industrial temperature range of −40°C to +85°C and is housed in an SOIC-8 package. Key electrical parameters include a maximum input clock frequency of 200 MHz, a maximum output-to-output skew of 45 ps, and a maximum part-to-part skew of 500 ps when VDDO is 2.5 V. Propagation delay ranges from 1.9 ns to 3.3 ns at 3.3 V VDDO and 2.2 ns to 3.7 ns at 2.5 V VDDO.

Clock Buffers, Drivers Feature Summary

• Supports input clock frequencies up to 200 MHz with low additive RMS phase jitter.
• Features low output-to-output skew of 45 ps maximum and part-to-part skew of 500 ps maximum.
• Accepts LVCMOS/LVTTL input levels and provides single-ended LVCMOS/LVTTL outputs.
• Form, fit, and function compatible with ICS8304 and ICS8304I devices.

Clock Buffers, Drivers Applications

• Clock distribution in high-speed digital systems.
• Buffering LVCMOS/LVTTL clock signals for multiple loads.
• Industrial applications requiring wide operating temperature ranges.

Clock Buffers, Drivers Procurement Notes

Verify the current status of the NB3M8304CDR2G before design finalization, as the datasheet indicates this specific device may be discontinued and not recommended for new designs. Confirm availability through onsemi representatives or authorized distributors. Ensure that the SOIC-8 tape and reel packaging specifications align with automated assembly requirements. Check for updated replacement components if this part is no longer supported.

Clock Buffers, Drivers Selection Notes

Select the NB3M8304CDR2G when a 1:4 fanout buffer with LVCMOS/LVTTL compatibility is required for clock distribution. Ensure the system design accommodates the dual supply voltages: 3.3 V ±5% for VDD and either 2.5 V ±5% or 3.3 V ±5% for VDDO. Consider the skew specifications (45 ps output-to-output, 500 ps part-to-part) against system timing budgets. Verify that the SOIC-8 package fits the PCB layout constraints and thermal requirements for the intended application environment.

Clock Buffers, Drivers Part Context

The NB3M8304C series includes variants such as NB3M8304CDG (tube packaging) and NB3M8304CDR2G (tape and reel). The 'DR2G' suffix denotes the SOIC-8 package with Pb-free composition and tape and reel shipping quantity of 2,500 units. This component belongs to the NB3M8302C family of low skew fanout buffers, designed for industrial temperature operation and compatibility with legacy ICS8304 designs.

Clock Buffers, Drivers Replacement Considerations

The datasheet notes that the NB3M8304CDR2G is discontinued and not recommended for new designs. Designers should consult onsemi representatives for current alternatives. No specific public substitute part numbers are listed in the provided documentation; however, the device is pin-compatible with ICS8304 and ICS8304I.