MAX3969ETP+

Overview

The MAX3969ETP+ is a limiting amplifier IC designed for optical networks, housed in a 20-TQFN (4x4) package. It serves as a recommended upgrade for the MAX3964 and MAX3968 series. The device operates on a single +3.0V to +5.5V supply and features an integrated power detector providing a received-signal-strength indicator (RSSI). It includes programmable loss-of-signal detection with complementary PECL outputs and an optional data squelch function.

Feature Summary

• Integrated power detector provides analog RSSI output proportional to input signal power
• Programmable loss-of-signal threshold with complementary PECL LOS outputs
• Optional data squelch function disables outputs during signal loss conditions
• Compatible with 4B/5B data coding standards

Applications

• 125Mbps FDDI Receivers
• 155Mbps LAN ATM Receivers
• Fast Ethernet Receivers
• ESCON Receivers
• 155Mbps FTTx Receivers

Procurement Notes

Verify the component matches the specific MAX3969ETP+ designation rather than legacy variants like MAX3964A or MAX3968. Confirm the package type is 20-TQFN with exposed pad. Ensure the ordering suffix indicates lead-free compliance if required by environmental specifications. Cross-reference the manufacturer's latest documentation for any pinout or functional updates.

Selection Notes

Select this component when upgrading from MAX3964 or MAX3968 systems requiring improved integration. Consider the device for applications needing precise loss-of-signal detection thresholds. Evaluate the need for PECL output compatibility versus other logic families. Assess the requirement for analog RSSI monitoring for system diagnostics.

Part Context

This part belongs to the MAX3964/MAX3968 family of limiting amplifiers manufactured by Analog Devices Inc./Maxim Integrated. It is positioned as a recommended upgrade for older generations, offering enhanced functionality within the same operational envelope. The device is categorized under special purpose amplifiers for linear integrated circuits.

Replacement Considerations

Public confirmed substitute part numbers: MAX3964AETP+, MAX3968CEP.