MAX3268CUB+T

Overview

The MAX3268CUB+T is a limiting amplifier designed for Gigabit Ethernet and Fibre Channel optical receiver systems. It operates on a +3.0V to +5.5V supply voltage and supports data rates of 1.25Gbps or 2.5Gbps. The device features standards-compliant positive-referenced emitter-coupled logic (PECL) data outputs and is housed in a tiny 10-pin µMAX package with an exposed paddle. It includes RMS power detectors with programmable loss-of-signal indication, an optional squelch function, and low deterministic jitter.

Feature Summary

• Provides standards-compliant PECL data outputs suitable for small-form-factor receivers
• Integrates RMS power detection with programmable loss-of-signal indication
• Includes an optional squelch function that mutes the data output signal when input voltage falls below a threshold
• Features low deterministic jitter performance

Applications

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

Procurement Notes

Verify the component matches the exact part number MAX3268CUB+T, ensuring the suffix indicates lead-free packaging. Confirm the manufacturer is Analog Devices Inc./Maxim Integrated. Check the operating temperature range specification against system requirements. Ensure the 10-pin µMAX package type aligns with the PCB footprint design.

Selection Notes

Select this component for applications requiring PECL outputs in compact designs. It is suitable for optical receivers needing programmable signal detection. Consider the 10-pin µMAX package size constraints. Verify compatibility with the required data rate and supply voltage range. Evaluate the need for the integrated squelch feature.

Part Context

This part belongs to the MAX3264/MAX3265/MAX3268/MAX3269/MAX3765/MAX3768 family of limiting amplifiers. The MAX3268 variant specifically provides PECL outputs, distinguishing it from CML output variants like the MAX3264. It is designed for high-speed optical communication systems.

Replacement Considerations

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