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Texas Instruments TLV803EA29VDBZR — Signal Isolation
Texas Instruments

TLV803EA29VDBZR Simple Reset/Power-On Reset, 2.9V Threshold

MPNTLV803EA29VDBZR
End of Life

Texas Instruments TLV803EA29VDBZR, Simple Reset/Power-On Reset, Active Low, Open Drain, 2.9V threshold, 130ms min reset timeout, -40°C to 125°C, SOT-23-3, Surface Mount.

$0.48Ref. price · indicative, final on quote
TLV803EA29VDBZR datasheet
PackagingTO-236-3, SC-59, SOT-23-3
StockContact for availability
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Specifications

TLV803EA29VDBZR Technical Specifications
ParameterValue
TypeSimple Reset/Power-On Reset
Mounting typeSurface Mount
Voltage - threshold2.9V
Number of voltages monitored1
Operating temperature-40°C ~ 125°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout130ms Minimum
CaseTO-236-3, SC-59, SOT-23-3

Product details

Voltage supervisor for 3.3V rails — what the 2.9V threshold means

The TLV803EA29VDBZR is a simple reset/power-on supervisor that monitors a single voltage rail and holds the reset output active-low until the supply has been above the threshold for the full timeout period.

Temperature grade and environment

Rated for -40°C to 125°C ambient, this part covers industrial motor drives, outdoor telecom, and under-hood automotive environments where the PCB sees high heat. The SOT-23-3 package is a standard three-pin footprint that hand-solders easily and fits tight layouts. Surface-mount only — no through-hole variant.

Frequently asked questions

What is the equivalent or replacement for TLV803EA29VDBZR?

The TLV803ED29DBZR is a functional equivalent with the same 2.9V threshold and SOT-23-3 package, but its minimum reset timeout is 33ms instead of 130ms. Verify your system's required reset hold time before substituting.

Is TLV803EA29VDBZR compatible with a 3.3V system?

Yes, the 2.9V threshold is designed for a 3.3V supply rail. It asserts reset when the voltage falls below 2.9V, providing a clean brown-out and power-up reset signal.

What is the reset timeout of TLV803EA29VDBZR?

The minimum reset timeout is 130ms. The output stays low for at least that duration after the supply rises above the 2.9V threshold.

Is TLV803EA29VDBZR active low or active high?

Active low. The reset output goes low when the monitored voltage drops below the threshold and stays low through the timeout period.