MAX3265EUE+T

Overview

The MAX3265EUE+T is a +3.0V to +5.5V, 2.5Gbps limiting amplifier designed for Gigabit Ethernet and Fibre Channel optical receiver systems. It features current-mode logic (CML) data outputs tolerant of inductive connectors and is housed in a 16-pin TSSOP package with an exposed paddle. The device provides constant-level output voltages with controlled edge speeds, low deterministic jitter, and programmable loss-of-signal indication.

Feature Summary

• Provides CML data outputs suitable for GBIC receivers
• Includes RMS power detectors with programmable loss-of-signal indication
• Features optional squelch function to mute data output when input voltage falls below threshold

Applications

• Gigabit Ethernet Optical Receivers
• Fibre Channel Optical Receivers
• System Interconnect
• ATM Optical Receivers

Procurement Notes

Verify the component matches the specific electrical characteristics for the -40°C to +85°C temperature range. Confirm the presence of the lead-free designation (+ suffix) and the 16-pin TSSOP-EP package configuration. Ensure compatibility with the required termination resistors and coupling capacitors as specified in the official datasheet design procedures.

Selection Notes

Select this part for applications requiring 2.5Gbps data rates with CML outputs. Consider the MAX3264 variants if a lower 1.25Gbps rate is sufficient. Evaluate the MAX3268/3269 series if PECL outputs are preferred over CML. Verify that the system can accommodate the required external components for offset correction and signal coupling.

Part Context

This component belongs to the Maxim Integrated MAX3264/MAX3265/MAX3268/MAX3269 family of high-speed limiting amplifiers. These devices are engineered to interface directly with transimpedance amplifiers in optical receiver modules. The E-grade variant ensures operation across the extended industrial temperature range, distinguishing it from the C-grade commercial version.

Replacement Considerations

MAX3264EUE+T

FAQ

How is the loss-of-signal threshold programmed?

The LOS assert threshold is set by connecting an external resistor from the TH pin to ground.

What is the function of the LEVEL pin?

The LEVEL pin controls the CML output current; leaving it open results in approximately 16mA, while connecting it to ground increases the current to approximately 20mA.