TLV1861DBVR

Comparators Overview

The TLV1861DBVR is a single-channel nanopower analog comparator from the Texas Instruments TLV186x family, housed in an SOT-23-5 package. It operates on a supply voltage range of 1.8V to 40V with a quiescent current of 440nA per channel. The device features fail-safe inputs capable of over-the-rail operation up to 40V independent of V+, and includes internal hysteresis of 2.8mV. It utilizes an open-drain output stage and incorporates a Power-On Reset (POR) circuit for known startup conditions.

Comparators Feature Summary

• Fail-safe inputs maintain high impedance and operate correctly even when unpowered or below minimum supply voltage.
• Over-the-rail input capability allows common-mode voltages to extend up to 40V above V-, independent of the positive supply rail.
• Internal Power-On Reset ensures the output remains in a defined state until the supply voltage reaches the required threshold.

Comparators Applications

• Mobile phones & tablets
• Gas detector
• Smoke & heat detector

Comparators Procurement Notes

Verify the specific ordering suffix 'DBVR' corresponds to the SOT-23-5 package and tape-and-reel delivery format. Confirm that the open-drain output configuration meets system requirements, as this variant lacks the push-pull drive found in the TLV185x series. Ensure external pull-up components are selected appropriately for the target logic levels.

Comparators Selection Notes

Select the TLV1861DBVR when an open-drain output is preferred for level translation or wired-OR configurations. This part is suitable for low-power monitoring applications requiring wide supply ranges. Consider the TLV1851 if a push-pull output stage is necessary to eliminate external pull-up resistors and drive loads directly.

Comparators Part Context

This component belongs to the TLV185x/TLV186x family of 40V nanopower comparators. While the TLV185x variants feature push-pull outputs, the TLV186x series specifically provides open-drain outputs. Both share identical input characteristics, including fail-safe protection and over-the-rail capabilities, designed for always-on systems.

Comparators Replacement Considerations

The TLV1851DBVR serves as a functional substitute within the same family, offering identical input specifications but utilizing a push-pull output stage instead of open-drain. Verify that the change in output topology aligns with the existing circuit design before substitution.