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Analog Devices MAX6423US22+T — DC-DC Power Modules

MAX6423US22+T Simple Reset/Power-On Reset, 2.188V Threshold

MPNMAX6423US22+T
End of Life

Analog Devices MAX6423US22+T, Simple Reset/Power-On Reset, Active Low, Open Drain, 1 Channel, 2.188V Threshold, Adjustable Timeout, SOT-143-4, -40°C to 125°C.

$3.93Ref. price · indicative, final on quote
Analog Devices MAX6423US22+T datasheet (PDF)
PackagingTO-253-4, TO-253AA
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX6423US22+T specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold2.188V
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
CaseTO-253-4, TO-253AA

Product details

What this supervisor does on your rail

The open-drain output lets you wire-OR the reset signal with other supervisors or pull it to a different logic rail, which is common in multi-voltage designs where the core and I/O supplies sequence independently.

Threshold and timeout — setting the reset window

The adjustable/selectable reset timeout means you are not locked into a fixed delay. A small capacitor on the CT pin sets the period — useful when the downstream device needs a longer hold time to complete its internal power-up sequence or when a fast release is needed to meet a timing budget.

Housed in a SOT-143-4 package (also TO-253-4), this is a four-lead surface-mount device. The SOT-143 footprint is compact and shares the land pattern with many small reset ICs.

Frequently asked questions

What is the reset timeout for MAX6423US22+T?

The reset timeout is adjustable/selectable via an external capacitor. There is no fixed internal timeout — the designer sets the delay to suit the downstream load.

What package does MAX6423US22+T come in?

It is supplied in a SOT-143-4 surface-mount package, also described as TO-253-4 / TO-253AA. The tape-and-reel option is standard for volume assembly.

Is MAX6423US22+T RoHS compliant?

Yes, it is rated ROHS3 compliant, covering the full RoHS restricted-substance list without exemptions.

What are the alternatives to MAX6423US22+T?

Within the same MAX6423 family, variants with different threshold voltages (e.g., 1.575V, 2.925V) are pin-compatible. For a fixed-timeout supervisor in the same SOT-143 package, the MAX6316 series is a functional alternative, though the threshold and timeout must be matched to the rail.