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Analog Devices MAX6373KA+T — Analog & Data Acquisition

MAX6373KA+T Watchdog Circuit, Active Low Reset, SOT-23-8

MPNMAX6373KA+T
End of Life

Analog Devices MAX6373KA+T, Watchdog Circuit, Active Low Reset, Open Drain Output, Adjustable/Selectable Reset Timeout, SOT-23-8, -40°C to 125°C.

$4.31Ref. price · indicative, final on quote
Analog Devices MAX6373KA+T datasheet (PDF)
PackagingSOT-23-8
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX6373KA+T specifications
ParameterValue
TypeWatchdog Circuit
MountingSurface Mount
Voltage - thresholdAdjustable/Selectable
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 timeoutAdjustable/Selectable
CaseSOT-23-8

Product details

What this supervisor does on your board

The Analog Devices MAX6373KA+T is a single-channel watchdog circuit in an SOT-23-8 package. It monitors a single voltage rail and asserts a reset output — active low, open-drain — when the supply drops below an adjustable/selectable threshold. The reset timeout is also adjustable, letting you set the watchdog period to match the system's expected heartbeat interval.

The SOT-23-8 footprint is small enough for space-constrained designs — think motor drive control boards, engine ECUs, or outdoor telecom line cards where the watchdog needs to keep running through the thermal extremes.

Because both the voltage threshold and the reset timeout are adjustable/selectable, you can tune the watchdog period with a single external capacitor or resistor (depending on the configuration). That saves a dedicated timer IC or a firmware-based watchdog that consumes MCU resources. For a production BOM, it means one less programmed part to manage — the timeout is set by a passive component value, not a firmware revision.

Frequently asked questions

Does MAX6373KA+T have RoHS compliance?

Yes, the MAX6373KA+T is ROHS3 compliant.

What is the closest pin-compatible alternative to MAX6373KA+T in this family?

The MAX6374 is a direct sibling in the same watchdog family, sharing the same SOT-23-8 footprint and adjustable timeout feature. The primary difference is the reset output polarity — the MAX6374 uses an active-high reset, while the MAX6373KA+T uses active-low. Verify the downstream logic polarity before substituting.

What is MAX6373KA+T's listed type and reset polarity?

The MAX6373KA+T is a Watchdog Circuit with an Active Low reset output. The output is open drain or open collector, so it can be pulled up to the monitored rail voltage or another logic supply.