MAX3269CUB+

Overview

The MAX3269CUB+ is a +3.0V to +5.5V, 2.5Gbps limiting amplifier designed for Gigabit Ethernet and Fibre Channel optical receiver systems. It features standards-compliant positive-referenced emitter-coupled logic (PECL) data outputs and is housed in a tiny 10-pin µMAX package suitable for small-form-factor receivers. The device includes an RMS power detector with programmable loss-of-signal indication and excellent jitter performance.

Feature Summary

• Provides standards-compliant PECL data outputs
• Integrates an RMS power detector with programmable loss-of-signal indication
• Features an optional squelch function that mutes the data output signal when input voltage falls below a threshold
• Delivers low deterministic jitter and controlled edge speeds

Applications

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

Procurement Notes

Verify the component authenticity by checking the manufacturer markings against official documentation. Confirm the specific suffix indicates lead-free packaging status. Ensure the operating temperature range matches the application requirements before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring high-speed signal conditioning in compact form factors. The PECL interface is ideal for standard transmission line terminations. Consider the internal termination resistors and required external coupling capacitors during circuit design to optimize jitter performance.

Part Context

This part belongs to the MAX3264/MAX3265/MAX3268/MAX3269/MAX3765/MAX3768 family of limiting amplifiers. While other variants offer CML outputs or different data rates, the MAX3269 specifically provides 2.5Gbps PECL outputs in a 10-pin µMAX package.

Replacement Considerations

The MAX3768CUB+ serves as a direct functional substitute within the same family, offering identical 2.5Gbps PECL outputs and pinout compatibility in the 10-pin µMAX package.