TLV1821QDCKRQ1

Comparators Overview

The TLV1821QDCKRQ1 is an automotive-grade, single-channel analog comparator from the Texas Instruments TLV182x-Q1 family. It features a rail-to-rail input stage and an open-drain output capable of being pulled 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 characteristics include a typical propagation delay of 420ns, an input offset voltage of 500μV, and a 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 operation.
• Rail-to-rail input capability extending beyond supply rails within specified limits.
• Open-drain output stage allowing pull-up voltages up to 40V independent of supply.
• Integrated Power-On Reset circuit ensures known output state during power transitions.

Comparators Applications

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

Comparators Procurement Notes

Verify the specific package suffix 'DCK' corresponds to the SC-70-5 form factor in the manufacturer's orderable addendum. Confirm that the 'Q1' designation aligns with the required AEC-Q100 automotive qualification level. Ensure the open-drain output configuration meets system logic requirements without push-pull alternatives.

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 level shifting or wired-OR configurations. Verify that the 420ns propagation delay satisfies the timing constraints of the target application compared to faster comparator options.

Comparators Part Context

This part belongs to the TLV18xx-Q1 family of micro-power comparators. It shares core specifications with the TLV181x-Q1 series but differs by utilizing an open-drain output instead of a push-pull stage. The family is designed for automotive environments requiring robust performance across wide supply voltage ranges.

Comparators Replacement Considerations

The TLV1821LQDBVRQ1 serves as a functional substitute with an alternate pinout configuration. Direct replacement requires verifying pin compatibility between the standard and alternative layouts.