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Analog Devices MAX6343LUT — Discrete Semiconductors

MAX6343LUT Simple Reset/Power-On Reset, 4.63V Threshold

MPNMAX6343LUT
End of Life

Maxim Integrated MAX6343LUT, Simple Reset/Power-On Reset, Active Low, Open Drain, 4.63V Threshold, 100ms Minimum Reset Timeout, SOT-23-6, -40°C to 125°C.

$2.74Ref. price · indicative, final on quote
Analog Devices MAX6343LUT datasheet (PDF)
PackagingSOT-23-6
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX6343LUT specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold4.63V
Number of voltages monitored1
Operating temperature-40°C ~ 125°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageBulk
Reset timeout100ms Minimum
CaseSOT-23-6

Product details

Where it fits — temperature and environment

Rated for -40°C to 125°C, this part handles industrial enclosures, outdoor telecom cabinets, and engine-bay electronics without a temperature grade downgrade. The SOT-23-6 package keeps the footprint small — useful when board space is tight and you need a supervisor near the processor without routing a long reset trace.

Lifecycle and sourcing reality

The MAX6343LUT is listed as Active in production. RoHS non-compliant, so verify your assembly house's exemption policy if you need lead-free.

Frequently asked questions

Is MAX6343LUT active low or active high?

Active low. The reset output goes low when the supply is out of tolerance. Because it's open drain, you need an external pull-up resistor to the logic supply to get a valid high level when reset is not asserted.

What is the closest pin-compatible alternative to MAX6343LUT?

Within the same family, parts with different threshold voltages (e.g., 2.63V, 3.08V, 4.38V) share the same SOT-23-6 pinout and open-drain active-low output. If you need a different trip point, look at the MAX6342/MAX6344 variants — same footprint, same timeout, same temperature range.