MAX903CSA+T

Overview

The MAX903CSA+T is a high-speed, low-power single voltage comparator from the MAX900–MAX903 series. It features differential analog inputs and TTL-logic outputs with active internal pull-ups. The device operates from separate analog and digital supplies or a single combined supply. Key electrical parameters include an 8ns typical propagation delay at 5mV overdrive, 18mW power consumption per comparator at +5V, and an input common-mode range that includes the negative rail.

Feature Summary

• Features fast propagation delay for high-speed data discrimination applications
• Includes independent TTL-compatible latch inputs to hold output states
• Supports flexible analog supply voltages ranging from +5V to +10V or ±5V
• Allows ground sensing when powered from a single supply due to input range including the negative rail

Applications

• High-speed A/D converters
• Line receivers
• Threshold detectors
• Input trigger circuitry
• PWM circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for Not Recommended for New Designs (NRND) status in current documentation. Ensure the specific package variant matches design requirements before procurement.

Selection Notes

Select this comparator for designs requiring fast response times and TTL-compatible logic levels. Consider the separate analog and digital supply capability for noise isolation in mixed-signal environments. Verify that the latch functionality meets system state-holding requirements, as this feature distinguishes it from non-latch variants like the MAX901.

Part Context

The MAX903CSA+T belongs to the MAX900–MAX903 family of high-speed, low-power voltage comparators. This series is designed for applications demanding rapid signal discrimination. The MAX903 specifically provides a single comparator channel within an 8-pin SO package, offering a compact solution for space-constrained designs requiring latch capabilities.

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 parts with similar speed but lower power dissipation, the MAX9201/MAX9202/MAX9203 series is suggested.