1.67V threshold supervisor for 1.8V rails
The TPS3831G18DQNR is a Texas Instruments Simple Reset/Power-On Reset IC that monitors a single 1.8V supply rail with a threshold of 1.67V. The 120ms minimum reset timeout gives the downstream processor or FPGA time to stabilize after power-up or a brown-out event. The push-pull, totem-pole output drives the reset line directly without an external pull-up resistor, saving a component on the BOM. The active-low reset is the standard polarity for most MCU and DSP reset inputs.
Texas Instruments lists this as a current production part, so BOM planners can source it without near-term obsolescence risk. ROHS3 compliant, meeting the latest EU restriction-of-hazardous-substances directive for lead-free soldering processes.