MAX9142ESA

Overview

The MAX9142ESA+ is a dual high-speed comparator optimized for 3V and 5V single-supply systems. It features rail-to-rail inputs, allowing the common-mode voltage range to extend beyond both power-supply rails. The outputs are CMOS/TTL-compatible and pull to within 0.3V of either supply rail without external pullup circuitry. Propagation delay is 40ns with a 10mV overdrive, while supply current is only 150µA per comparator at 3V. Internal hysteresis ensures clean output switching even with slow-moving input signals.

Feature Summary

• Rail-to-rail input voltage range extending beyond supply rails
• CMOS and TTL logic compatible outputs
• Internal hysteresis for noise immunity
• Continuous short-circuit protection on all pins

Applications

• Line Receivers
• Threshold Detectors/Discriminators
• Zero-Crossing Detectors
• Sampling Circuits

Procurement Notes

Verify the exact part number suffix against official documentation to confirm package type and RoHS compliance status. Ensure the ordering code matches the specific variant required for your design constraints. Cross-reference manufacturer datasheets for any recent revisions or pinout changes before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring low power consumption alongside fast response times in portable equipment. The rail-to-rail input capability simplifies interface design with various signal sources. Consider the internal hysteresis for noisy environments where external components would otherwise be necessary to prevent oscillation.

Part Context

This device belongs to the MAX914x family of comparators, which includes single (MAX9140), dual (MAX9142), and quad (MAX9144) variants. The MAX9142 specifically provides two independent comparators in an 8-pin package. It serves as a higher-speed, lower-power upgrade to industry-standard comparators like the MAX941/MAX942 series.

Replacement Considerations

Public confirmed substitute part numbers include MAX9142EKA+T.