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Analog Devices MAX6388XS31D3+ — Discrete Semiconductors

MAX6388XS31D3+ Power Supply Monitor, 2-Volt

MPNMAX6388XS31D3+
End of Life

Analog Devices MAX6388XS31D3+ Power Supply Monitor, Active High Reset, Push-Pull Output, SC-82A/SOT-343, Surface Mount, 140ms Reset Timeout, -40°C to +125°C.

$1.21Ref. price · indicative, final on quote
Analog Devices MAX6388XS31D3+ datasheet (PDF)
PackagingSC-82A, SOT-343
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX6388XS31D3+ specifications
ParameterValue
TypePower Supply Monitor
MountingSurface Mount
Voltage - threshold3.08V, Adj
Number of voltages monitored2
Operating temperature-40°C ~ 125°C (TA)
ResetActive High
OutputPush-Pull, Totem Pole
PackageBulk
Reset timeout140ms Minimum
CaseSC-82A, SOT-343

Product details

Dual-voltage supervisor in a small SC-70

The MAX6388XS31D3+ is a dual-voltage power supply monitor from Analog Devices, packaged in a 4-lead SC-82A (SOT-343) case that also maps to the SC-70-4 supplier package. It monitors two independent voltage rails, with one threshold fixed at 3.08V and the second adjustable via an external resistor divider. The reset timeout is a minimum of 140 ms, giving the downstream processor time to stabilize after the supply rails come into regulation. Surface-mount assembly on a standard SC-70 footprint keeps the board area small.

Active lifecycle and supply

The part ships in bulk packaging (tube or tray, not tape-and-reel), which is typical for small-quantity engineering samples or repair-stock orders. If reel packaging is needed for automated pick-and-place, confirm the reel option with your distributor at quote time.

Frequently asked questions

What does the active high reset output mean for my circuit?

Active high reset means the output pin goes high (to the supply voltage) when the monitored voltage falls below the threshold. The push-pull output drives the reset line directly without an external pull-up resistor, simplifying the connection to the processor's reset input. The reset stays asserted for a minimum of 140 ms after the supply recovers.

What voltages does the MAX6388XS31D3+ monitor?

It monitors two voltages: one fixed threshold at 3.08V and a second adjustable threshold set by an external resistor divider. This allows one rail to be precisely monitored at 3.08V (e.g., a 3.3V supply) while the second rail can be tailored to any lower voltage the design requires.

What package does the MAX6388XS31D3+ come in?

It is supplied in a 4-lead SC-82A (SOT-343) package, also referred to as SC-70-4. The footprint is compact, measuring approximately 2.0 mm x 2.1 mm, suitable for space-constrained designs. Mounting is surface mount.