The Texas Instruments TPS3306-18DGKR is a multi-voltage supervisor that monitors two independent supply rails with thresholds of 1.68V and 2.93V — a direct fit for 1.8V and 3.3V logic systems where a single supervisor must sequence or hold both rails in reset until they stabilise. The active-low, open-drain output asserts a reset when either monitored voltage drops below its threshold, and holds the reset for a minimum of 70 ms after both rails recover.
Thresholds and temperature range
The 1.68V threshold suits a nominal 1.8V rail with a 120 mV undervoltage margin; the 2.93V threshold suits a 3.3V rail with a 370 mV margin.
The 8-pin footprint is shared with the standard MSOP-8 and TSSOP-8 land pattern.
