MAX3800UHJ+T

Overview

The MAX3800UHJ+T is a +3.3V adaptive cable equalizer and cable driver integrated on a single chip, designed for coaxial and twin-axial point-to-point communications. It supports data rates up to 3.2Gbps and automatically adjusts to attenuation caused by skin-effect losses of up to 30dB at 1.6GHz. The device features differential current-mode logic (CML) inputs and outputs with adjustable output amplitude. It includes a loss-of-signal (LOS) output and a cable integrity monitor (CIM). Operating from a single +3.3V supply, it consumes approximately 65mA typical supply current and dissipates 200mW. The unit is housed in a 32-pin TQFP package with an exposed pad.

Feature Summary

• Adaptive equalization automatically compensates for copper cable attenuation up to 30dB at 1.6GHz
• Integrated cable driver with adjustable output amplitude controlled by external resistor
• Includes loss-of-signal indicator and cable integrity monitor outputs
• Supports differential or single-ended signal operation with CML interfaces

Applications

• High-speed links in communications and data systems
• Backplane and interconnect applications
• SDH/SONET transmission equipment

Procurement Notes

Verify the component status as discontinued or limited availability through official manufacturer channels before design finalization. Confirm that the specific suffix indicates lead-free packaging compliant with RoHS standards. Ensure the 32-pin TQFP-EP package footprint matches the target PCB layout requirements. Validate thermal performance specifications against the system's heat dissipation capabilities.

Selection Notes

Select this component for applications requiring simultaneous equalization and driving capabilities within a single integrated circuit. The device is suitable for extending copper cable lengths in high-frequency interconnects where skin-effect losses are significant. Consider the power consumption and thermal requirements associated with the 32-pin TQFP package when designing the system environment.

Part Context

This part belongs to the MAX3800 series of adaptive equalizers and cable drivers manufactured by Analog Devices / Maxim Integrated. It is specifically the lead-free version packaged in a 32-pin Thin Quad Flat Package with an exposed pad. The series is designed to address signal integrity issues in high-speed digital communication links over copper media.

Replacement Considerations

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