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Texas Instruments TLV809EA43DBZR — Discrete Semiconductors

TLV809EA43DBZR Simple Reset/Power-On Reset, 4.38V Threshold

MPNTLV809EA43DBZR
End of Life

Texas Instruments TLV809EA43DBZR Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 4.38V Threshold, 130ms Minimum Reset Timeout, SOT-23-3, -40°C to 125°C.

$0.64Ref. price · indicative, final on quote
Texas Instruments TLV809EA43DBZR datasheet (PDF)
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TLV809EA43DBZR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold4.38V
Number of voltages monitored1
Operating temperature-40°C ~ 125°C (TJ)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout130ms Minimum
CaseTO-236-3, SC-59, SOT-23-3

Product details

Supervisor for a 5V rail — what the 4.38 V threshold means

The TLV809EA43DBZR: Simple reset/power-on reset supervisor that monitors a single voltage rail. Asserts a reset signal when the supply drops below a 4.38 V threshold. Reset is active-low, push-pull. The 130 ms minimum reset timeout holds the reset long enough for system stabilization.

Temperature grade and package — industrial and under-hood capable

The SOT-23-3 package is a three-pin footprint that fits tight layouts and is compatible with standard pick-and-place assembly. Surface-mount only — no through-hole variant.

Active lifecycle — no LTB concern for new builds

TI lists the TLV809EA43DBZR as Active. That means no last-time-buy window to track and no imminent obsolescence risk for production planning.

Frequently asked questions

What is the difference between TLV809EA43DBZR and TLV803EA29VDBZR?

Both are simple reset supervisors from TI with an active-low reset, but the TLV803EA29VDBZR uses an open-drain output (needs an external pull-up resistor) and monitors a 2.93 V threshold, while the TLV809EA43DBZR uses a push-pull output (no pull-up) and monitors a 4.38 V threshold. The 130 ms reset timeout is common to both. Choose the TLV809 for 5 V rails and a simpler BOM; choose the TLV803 for 3.3 V or 2.5 V rails where an open-drain wired-OR reset bus is needed.

Is TLV809EA43DBZR RoHS compliant?

Yes. The TLV809EA43DBZR is ROHS3 Compliant, meeting the latest EU RoHS directive without exemptions.