MAX903ESA

Overview

The MAX903ESA is a high-speed, low-power single 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 operates from separate analog and digital power supplies or a single combined supply. Typical propagation delay is 8ns at 5mV overdrive, with power consumption of 18mW per comparator at +5V.

Feature Summary

• Features fast propagation delay for high-speed data discrimination applications
• Includes independent TTL-compatible latch inputs to hold comparator output states
• Supports flexible analog supply ranging from +5V to +10V or ±5V
• Analog input common-mode range includes the negative supply rail

Applications

• High-speed A/D converters
• Line receivers
• Voltage-to-frequency (V/F) converters
• Threshold detectors
• Input trigger circuitry

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific ordering suffixes that may indicate temperature ranges or packaging variations. Ensure the part number matches the exact pin configuration and electrical specifications required for your design implementation.

Selection Notes

Select this component when high-speed response and low power consumption are critical requirements. Consider the integrated latch functionality if state holding is needed without external components. Verify that the TTL-compatible outputs align with the logic levels of the downstream circuitry. Evaluate the need for separate analog and digital supplies to minimize noise coupling in mixed-signal environments.

Part Context

The MAX903ESA belongs to the MAX900–MAX903 family of high-speed, low-power voltage comparators. This series is designed for applications requiring fast propagation delays and efficient power usage. The MAX903 specifically provides a single comparator channel with latch capability, distinguishing it from other variants in the family like the MAX901 which lacks latches.

Replacement Considerations

The datasheet notes that the MAX900 was manufactured using an unavailable process and recommends checking for Maxim replacements or industry second-sources. For newer designs requiring similar speed with lower power dissipation, the MAX9201/MAX9202/MAX9203 series is suggested as a pin-for-pin compatible alternative.