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TPS3306-18DR

TPS3306-18DR Multi-Voltage Supervisor – Texas Instruments

MPNTPS3306-18DR
Active

Texas Instruments TPS3306-18DR, Multi-Voltage Supervisor, 2 channels, thresholds 1.68V and 2.93V, active-low open-drain output, 8-SOIC

$3.7700Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3306-18DR specifications
ParameterValue
TypeMulti-Voltage Supervisor
MountingSurface Mount
Voltage - threshold1.68V, 2.93V
Number of voltages monitored2
Operating temperature-40°C~85°C(TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout70ms Minimum
Case8-SOIC (0.154\", 3.90mm Width)

Product details

Two-rail supervisor – why the second threshold matters

The TPS3306-18DR monitors two independent voltage rails with thresholds of 1.68V and 2.93V. If either rail drops below its threshold, the open-drain output pulls low and holds for a minimum 70ms reset timeout. That second channel saves a separate supervisor IC when you need to sequence or protect both a core and an I/O supply.

The 1.68V threshold suits a 1.8V core rail (e.g., DDR memory or low-voltage logic), while the 2.93V threshold catches a 3.3V I/O or auxiliary rail before it drifts out of spec. The active-low, open-drain output lets you wire-OR multiple supervisors to a shared reset line without contention. The 70ms minimum reset timeout gives downstream regulators and oscillators time to settle before the processor releases from reset.

Frequently asked questions

How can I order TPS3306-18DR or check current availability?

Submit an RFQ with your target quantity and we will confirm pricing and lead time against the BOM line.

Does TPS3306-18DR have an active low reset output?

Yes, the reset output is active low and open drain. This allows direct connection to a microcontroller reset pin and wire-OR with other supervisors.

What is the difference between TPS3306-18DR and TPS3306-20DR?

The difference is the threshold voltages. The TPS3306-18DR monitors at 1.68V and 2.93V, while the TPS3306-20DR uses different thresholds (not listed in evidence). Both are multi-voltage supervisors in the same family and package.