MAX998ESA-T

Comparators Overview

The MAX998ESA-T is a single-channel, high-speed, low-power comparator optimized for +3V/+5V single-supply applications. It achieves a 20ns propagation delay while consuming only 225µA supply current per comparator. The device features a low-power shutdown mode that places the output in a high-impedance state and reduces supply current to 1nA. Inputs have a common-mode voltage range extending 200mV below ground. Outputs are capable of rail-to-rail operation without external pullup circuitry. All inputs and outputs tolerate continuous short-circuit faults to either rail. Internal hysteresis ensures clean switching with slow-moving signals.

Comparators Feature Summary

• Single-supply operation down to 2.7V
• Rail-to-rail push/pull outputs
• Ground-sensing inputs
• Internal hysteresis for clean switching

Comparators Applications

• Battery-powered systems
• Threshold detectors/discriminators
• IR receivers
• Digital line receivers

Comparators Procurement Notes

Verify the specific ordering suffix 'T' indicates tape-and-reel packaging configuration. Confirm the component is lead-free and RoHS compliant as indicated by standard Maxim Integrated product markings. Ensure the package type matches the required PCB footprint for surface-mount installation.

Comparators Selection Notes

Select this comparator for space-critical designs requiring fast response times with minimal power consumption. The internal hysteresis simplifies circuit design for noisy environments. Verify input signal levels remain within the specified common-mode voltage range to ensure predictable logic states.

Comparators Part Context

The MAX998 is part of the MAX976/MAX978/MAX998 family of comparators. While the MAX976 offers dual channels and the MAX978 provides quad channels, the MAX998 is configured as a single channel. This family shares similar electrical characteristics but varies in pin count and package options such as SOT23, µMAX, SO, and QSOP.

Comparators Replacement Considerations

Direct functional substitutes within the same family include the MAX976 (dual) and MAX978 (quad), provided pin compatibility or adapter solutions are addressed. Cross-family replacements require verification of propagation delay, supply current, and package dimensions.