Texas Instruments TPS3306-18D Multi-Voltage Supervisor, 2-Channel, Active-Low Reset, Open-Drain Output, 70ms Min Reset Timeout, Thresholds 1.68V/2.93V, -40°C to 85°C, 8-SOIC Surface Mount, Tube.
| Parameter | Value |
|---|---|
| Type | Multi-Voltage Supervisor |
| Mounting | Surface Mount |
| Voltage - threshold | 1.68V, 2.93V |
| Number of voltages monitored | 2 |
| Operating temperature | -40°C~85°C(TA) |
| Reset | Active Low |
| Output | Open Drain or Open Collector |
| Package | Tube |
| Reset timeout | 70ms Minimum |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
The open-drain output lets you wire-OR the reset signal with other supervisors or a manual reset button, which is handy on multi-card backplanes.
The reset timeout is 70 ms minimum. That is the hold time after all monitored voltages rise above their thresholds before the reset pin releases.
The 8-SOIC package is a common surface-mount footprint. A standard soldering iron and wick can remove and replace it.
No, the TPS3306-18D is listed as Active in production. There is no end-of-life notice, no last-time-buy deadline, and no successor part number to track.
The reset timeout is 70 ms minimum.
The two monitored thresholds are 1.68V (for a 1.8V rail) and 2.93V (for a 3.3V rail). The supervisor asserts reset when either supply drops below its respective threshold.
Yes. One of its two monitored channels is set to a 2.93V threshold, which is the standard undervoltage detect point for a 3.3V supply. The other channel monitors a 1.68V threshold, typically used for a 1.8V core rail.
The TLV803EA29VDBZR is a single-channel simple reset IC with a 2.93V threshold and a 130 ms reset timeout, but it monitors only one voltage. The TPS3306-18D is a dual-channel supervisor — there is no pin-compatible drop-in second source. For dual-rail monitoring, you would need two TLV803 devices or a different dual supervisor.