MAX921CSA-T

Comparators Overview

The MAX921CSA-T is a single-channel micro-power comparator in an 8-pin SO package. It operates from a single +2.5V to +11V supply or ±1.25V to ±5.5V dual supply, drawing less than 4μA quiescent current. The device features a 1.182V internal reference, programmable hysteresis via the HYST pin, and TTL/CMOS outputs capable of sourcing up to 40mA. Propagation delay is typically 12μs with 10mV overdrive.

Comparators Feature Summary

• Ultra-low power consumption with less than 4μA supply current
• Integrated 1.182V precision voltage reference
• Programmable hysteresis using external resistors on the HYST pin
• TTL/CMOS-compatible outputs with high source current capability

Comparators Applications

• Battery-powered systems
• Threshold detectors
• Window comparators
• Oscillator circuits

Comparators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the commercial temperature range (0°C to +70°C) matches application requirements. Ensure the SOIC-8 footprint aligns with PCB layout constraints. Cross-reference the manufacturer's latest datasheet for any updates to electrical characteristics or pin configurations before finalizing procurement.

Comparators Selection Notes

Select this component for applications requiring minimal quiescent current and integrated reference functionality. The single-channel configuration suits simple threshold detection tasks. Consider the output drive capability for direct LED or logic interface. Evaluate the input common-mode range relative to the supply voltage to ensure proper signal swing compatibility within the specified operating conditions.

Comparators Part Context

This part belongs to the MAX921–MAX924 family of ultra-low-power comparators. The MAX921 variant specifically provides one comparator channel with an internal reference and hysteresis control. Other family members offer dual or quad channels without internal references or hysteresis pins. The series is designed for low-voltage, battery-operated environments requiring high efficiency.

Comparators Replacement Considerations

Check for MAX921CSA as a non-tape-and-reel alternative. Verify functional equivalence with MAX921ESA for extended temperature ranges. Ensure pinout compatibility with other single-channel comparers if substituting.