MAX3840ETJ+

Specialized Overview

The MAX3840ETJ+ is a dual 2x2 asynchronous crosspoint switch designed for SDH/SONET DWDM and high-speed data switching applications. It supports serial data streams up to 2.7Gbps and clock signals up to 2.7GHz, making it suitable for OC-48 systems with forward error correction. The device features a fully differential signal path that minimizes jitter accumulation, crosstalk, and signal skew. All inputs and outputs are current mode logic (CML) compatible and can interface with AC-coupled LVPECL signals. Each CML output stage includes an enable control to power down unused channels, reducing typical power consumption to 460mW when all outputs are active. It operates from a single +3.3V supply over a temperature range of -40°C to +85°C.

Specialized Feature Summary

• Dual 2x2 asynchronous crosspoint architecture supporting fan-out and multiplexing capabilities
• Fully differential signal path optimized to minimize jitter accumulation and crosstalk
• Current Mode Logic (CML) inputs and outputs with internal terminations
• Individual TTL-controlled enable pins for powering down deselected output stages

Specialized Applications

• SDH/SONET and DWDM Transport Systems
• Add-Drop Multiplexers
• ATM Switch Cores
• WDM Cross-Connects
• High-Speed Backplanes

Specialized Procurement Notes

Verify the component matches the specific lead-free package designation indicated by the plus (+) suffix in the part number. Confirm the operating temperature range aligns with system requirements. Ensure the ordering information corresponds to the correct pin configuration and package code provided in official documentation.

Specialized Selection Notes

Select this component for applications requiring low jitter and minimal signal skew in high-speed optical networking environments. Consider the power-down feature for thermal management in dense configurations. Verify compatibility with existing CML or LVPECL signaling standards within the network infrastructure.

Specialized Part Context

This device belongs to the Maxim Integrated family of high-speed optical interconnect components. It is often used in conjunction with laser drivers and clock/data recovery circuits to form complete optical transmission and reception chains in telecommunications equipment.

Specialized Replacement Considerations

Public confirmed substitute part numbers: None identified.