MAX3268CUB+

Overview

The MAX3268CUB+ 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. 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, making it suitable for small-form-factor receivers.

Feature Summary

• Provides PECL-compatible data outputs
• Includes RMS power detectors with programmable loss-of-signal indication
• Offers optional squelch function to mute data output when input voltage falls below threshold
• Ensures excellent 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+. Confirm the presence of the lead-free designation (+) and the 10-pin µMAX package type. Ensure the operating temperature range aligns with system requirements. Check for authenticity through authorized distributors or official manufacturer channels to avoid counterfeit components.

Selection Notes

Select this component for applications requiring PECL outputs and compact packaging. Consider the 10-pin µMAX form factor for space-constrained designs. Evaluate the need for programmable loss-of-signal detection and squelch functionality. Ensure compatibility with the intended data rate and supply voltage range.

Part Context

This component belongs to the MAX3264/MAX3265/MAX3268/MAX3269/MAX3765/MAX3768 family of limiting amplifiers. It shares core functionalities with other members but differs in output interface and package type. The MAX3268 specifically provides PECL outputs and utilizes the 10-pin µMAX package, distinguishing it from CML-output variants.

Replacement Considerations

Direct substitutes within the same family include MAX3268CUB and MAX3768CUB+, which share identical pinouts and specifications. Verify that any replacement maintains the PECL output interface and 10-pin µMAX package configuration.