MAX902CSD

Overview

The MAX902CSD is a dual-channel, high-speed, low-power voltage comparator manufactured by Analog Devices Inc./Maxim Integrated. It features differential analog inputs and TTL-logic outputs with active internal pull-ups. The device includes independent TTL-compatible latch inputs to hold output states. It supports separate analog and digital power supplies or a single combined supply ranging from +5V to +10V. Key electrical parameters include an 8ns typical propagation delay at 5mV overdrive, 4mA typical operating current per channel at +5V, and a 4mV maximum input offset voltage.

Feature Summary

• Features fast 8ns propagation delay for high-speed data discrimination applications
• Includes independent TTL-compatible latch inputs to capture and hold comparator output states
• Supports flexible power supply configurations including separate analog/digital rails or single +5V to +10V supply
• Provides TTL-logic outputs with active internal pull-ups optimized for driving low-power Schottky TTL loads

Applications

• High-speed A/D converters and sampling circuits
• Line receivers and threshold detectors
• Input trigger circuitry and PWM circuits
• Fast V/F converters and data-discrimination systems

Procurement Notes

Verify the specific suffix 'CSD' corresponds to the SOIC-14 package and 0°C to +70°C temperature range. Confirm that the component is marked as Not Recommended for New Designs (NRND) in official documentation. Ensure compatibility with existing designs requiring this legacy part rather than newer alternatives like the MAX920x series.

Selection Notes

Select the MAX902CSD when a dual-channel comparator with integrated latching functionality is required. It is suitable for applications needing separate analog and digital ground isolation or single-supply operation up to +10V. Consider the NRND status and evaluate if the lower-power MAX920x series meets the same pinout and speed requirements for new implementations.

Part Context

The MAX902CSD belongs to the MAX900–MAX903 family of high-speed, low-power voltage comparators. This family offers single, dual, and quad configurations with identical performance characteristics. The MAX902 specifically provides two channels within a 14-pin package. The datasheet indicates these parts were manufactured using a process no longer available, leading to their classification as obsolete for new designs.

Replacement Considerations

The MAX9201/MAX9202/MAX9203 are recommended replacements offering pin-for-pin compatibility with half the power dissipation.