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Analog Devices MAX6865UK46D3S — Discrete Semiconductors

MAX6865UK46D3S Simple Reset/Power-On Reset IC

MPNMAX6865UK46D3S
End of Life

Maxim Integrated MAX6865UK46D3S, Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 4.625V Threshold, 150ms Minimum Reset Timeout, SOT-23-5, -40°C to 85°C.

$2.74Ref. price · indicative, final on quote
Analog Devices MAX6865UK46D3S datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX6865UK46D3S specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold4.625V
Number of voltages monitored1
Operating temperature-40°C ~ 85°C (TA)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageBulk
Reset timeout150ms Minimum
CaseSC-74A, SOT-753

Product details

What this supervisor does on your board

The output is push-pull, totem pole — no external pull-up resistor needed. Reset is active low, so it connects directly to the /RESET pin on most MCUs and MPUs. Packaged in a 5-pin SOT-23-5, it is a surface-mount part.

4.625V threshold — why that number matters

The 150ms minimum reset timeout ensures the supply has fully ramped and oscillated before the processor releases. For systems with large bulk capacitance or slow-start supplies, this is enough to avoid spurious resets on power-up.

It's a current-design part, suitable for new BOMs and production runs without obsolescence risk. RoHS non-compliant (lead-bearing finish). Verify your assembly house can accept SnPb solder processes before committing the BOM.

Frequently asked questions

Is MAX6865UK46D3S a direct replacement for MAX6864UK46D3S?

The MAX6865UK46D3S shares the same threshold voltage (4.625V) and package (SOT-23-5) as the MAX6864UK46D3S, but the output type differs. The MAX6865 uses a push-pull output; the MAX6864 uses an open-drain output. If your design requires an open-drain reset line (e.g., shared reset bus with pull-up), the MAX6865 will not work without a buffer.

Does MAX6865UK46D3S have an open-drain output?

No. The output is push-pull, totem pole. It drives the reset line high or low without needing an external pull-up resistor. If you need an open-drain output, look at the MAX6864UK46D3S.

Can MAX6865UK46D3S be used in 5V systems?

Yes. The 4.625V threshold is specifically designed for 5V rails. It asserts reset before the supply drops below the safe operating range of 5V logic.