MAX3768CUB-T

Overview

The MAX3768CUB-T is a limiting amplifier designed for Gigabit Ethernet and Fibre Channel optical receiver systems. It operates at a data rate of 1.25Gbps with a supply voltage range of +3.0V to +5.5V. The device accepts a wide range of input voltages and provides constant-level output voltages with controlled edge speeds. It features an RMS power detector with programmable loss-of-signal indication and an optional squelch function. The component is housed in a 10-uMAX/uSOP surface-mount package.

Feature Summary

• Designed specifically for Gigabit Ethernet and Fibre Channel optical receiver applications
• Integrates an RMS power detector with programmable loss-of-signal indication
• Includes an optional squelch function that mutes the data output signal when input voltage falls below a threshold

Applications

• Gigabit Ethernet optical receiver systems
• Fibre Channel optical receiver systems
• High-speed serial communication interfaces requiring limiting amplification

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging versus other variants. Confirm current availability status as the base MAX3768 series may have discontinuation notices. Ensure the 10-uMAX package compatibility matches the target PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when designing optical receivers for 1.25Gbps standards such as Fibre Channel or Gigabit Ethernet. It is suitable for applications requiring integrated signal monitoring via the loss-of-signal detector. Consider the 10-uMAX package size constraints and the +3.0V to +5.5V supply voltage range during system architecture planning.

Part Context

The MAX3768 belongs to a family of limiting amplifiers from Maxim Integrated, now part of Analog Devices Inc. This series includes variants like the MAX3264, MAX3265, and MAX3765, which support different data rates including 2.5Gbps. The MAX3768 specifically targets the 1.25Gbps market segment within high-speed networking infrastructure.

Replacement Considerations

Official substitutes within the same family include the MAX3264 and MAX3765 for similar 1.25Gbps applications, or the MAX3265 and MAX3765 if 2.5Gbps performance is required. Verify pinout and functional compatibility with the MAX3268CUB+T variant before substitution.