NB4N840MMNR4G

Signal Switches, Multiplexers, Decoders Overview

The NB4N840MMNR4G is a high-speed differential switch featuring dual 2x2 crosspoint topology, designed for signal routing in demanding environments. It operates on a single 3.0 V to 3.6 V supply with current mode logic (CML) inputs and outputs. The device supports maximum input clock frequencies up to 2.7 GHz and data rates of 3.2 Gb/s. Key electrical parameters include a typical propagation delay of 225 ps, channel-to-channel skew of 7 ps, and RMS jitter below 0.5 ps. Power consumption is rated at 430 mW. It utilizes internal 50Ω terminations for both inputs and outputs, housed in a compact 32-pin QFN package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Full-differential architecture minimizes jitter accumulation, crosstalk, and signal skew for stable signal integrity.
• Integrated 50Ω input and output terminations eliminate the need for external components and reduce interface reflections.
• Flexible configuration capabilities allow operation as a 1:2 fan-out, repeater, or 2x2 crosspoint switch via LVCMOS/LVTTL select inputs.
• Low power design includes an output disable feature to conserve energy when output signals are not required.

Signal Switches, Multiplexers, Decoders Applications

• Synchronous Digital Hierarchy (SDH) / Synchronous Optical Networking (SONET)
• Dense Wavelength Division Multiplexing (DWDM)
• Gigabit Ethernet
• High-speed switching systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the complete part number NB4N840MMNR4G against official onsemi documentation to ensure correct suffix identification. Confirm RoHS compliance status and material composition declarations prior to integration. Check for specific moisture sensitivity level requirements during storage and handling. Ensure voltage supply ranges match system specifications before deployment.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for applications requiring low skew and high bandwidth differential signal routing. The integrated termination simplifies PCB layout by reducing external passive component count. Consider the 32-QFN package dimensions for space-constrained designs. Verify compatibility with existing CML or LVPECL signal sources within the specified voltage limits.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the NB4N840 family of high-speed differential switches from onsemi. It is engineered for telecommunications and data communication infrastructure where signal fidelity and low latency are critical. The technology leverages current mode logic to achieve performance suitable for next-generation networking equipment.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Publicly confirmed substitute part numbers include NB4N840MMNG, MAX3840ETJ+, SY55859LMG, and SY55859LMG-TR. Verify pinout and parameter equivalence before substitution.