TLV1824QDYYRQ1

Comparators Overview

The TLV1824QDYYRQ1 is an automotive-grade, quad-channel analog comparator from the Texas Instruments TLV182x-Q1 family. It features rail-to-rail inputs and open-drain outputs capable of pulling up to 40V independent of the supply voltage. The device operates on a wide supply range of 2.4V to 40V with a quiescent current of 5μA per channel. Key electrical parameters include a typical propagation delay of 420ns, input offset voltage of ±0.5mV, and power supply rejection ratio of 100dB. It includes a Power-On Reset (POR) feature for known start-up states.

Comparators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for temperature grade 1.
• Open-drain output stage allows logic level translation and external pull-up to 40V.
• Integrated Power-On Reset ensures outputs remain in a known state during power transitions.
• Rail-to-rail input capability supports full common-mode voltage range operation.

Comparators Applications

• HEV/EV and power train systems
• Infotainment and cluster applications
• Body control module circuits

Comparators Procurement Notes

Verify the specific package suffix 'Y' corresponds to the SOT-23-THN variant as indicated in the datasheet package information table. Confirm that the 'Q1' designation aligns with the required automotive reliability specifications. Ensure the open-drain output configuration meets the system's pull-up requirements, as this differs from push-pull alternatives in the same family.

Comparators Selection Notes

Select this component when high-voltage tolerance up to 40V is required alongside low power consumption. The open-drain output is suitable for interfacing with different logic levels or implementing wired-OR configurations. Consider the TLV1814QDYYRQ1 if a push-pull output stage is preferred instead of open-drain. Verify thermal performance within the SOT-23-THN package for the specific ambient conditions.

Comparators Part Context

This part belongs to the TLV18xx-Q1 family of micro-power comparators designed for automotive environments. The family offers both single, dual, and quad channel options with either push-pull or open-drain outputs. The TLV182x variants specifically provide open-drain outputs, distinguishing them from the TLV181x push-pull counterparts while sharing identical input characteristics and power profiles.

Comparators Replacement Considerations

TLV1824QDRQ1

Comparators FAQ

How does the open-drain output differ from the push-pull option?

The open-drain output can only sink current and requires an external pull-up resistor. It allows the output voltage to be pulled up to 40V, independent of the comparator's supply voltage, whereas the push-pull option sources and sinks current relative to its own supply rails.

What is the function of the Power-On Reset (POR)?

The POR feature keeps the comparator outputs in a defined, known state until the supply voltage reaches a sufficient level. This prevents false triggering or erratic output behavior during system power-up and power-down sequences.