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MAX6749KA

MAX6749KA Simple Reset/Power-On Reset IC, SOT-23-8

MPNMAX6749KA
End of Life

Maxim Integrated MAX6749KA, Simple Reset/Power-On Reset, Active Low, Open Drain, 5.692ms min reset timeout, SOT-23-8, -40°C to 125°C.

$2.74Ref. price · indicative, final on quote
Analog Devices MAX6749KA datasheet (PDF)
PackagingSOT-23-8
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX6749KA specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - thresholdAdjustable/Selectable
Number of voltages monitored1
Operating temperature-40°C ~ 125°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageBulk
Reset timeout5.692ms Minimum
CaseSOT-23-8

Product details

The Maxim Integrated MAX6749KA is a simple reset/power-on reset supervisor IC that monitors a single supply rail and asserts a reset signal when the voltage falls below a threshold. Its active-low, open-drain output lets it interface directly with microcontroller reset inputs or other logic without level-shifting. The adjustable/selectable threshold gives flexibility to set the trip point for different supply voltages.

Housed in a SOT-23-8 surface-mount package, the MAX6749KA fits on compact PCBs where board area is tight. Surface-mount assembly is typical for reflow soldering; no special handling beyond normal SMD practice.

Note that the part is RoHS non-compliant, so verify your assembly's RoHS exemption requirements before specifying it for lead-free processes.

Frequently asked questions

What is the reset timeout of MAX6749KA?

The reset timeout is 5.692ms minimum. This is the duration the reset output stays low after the monitored supply rises above the threshold, ensuring the system stabilises before the processor starts.

Can MAX6749KA be used with 3.3V logic?

Yes, because the voltage threshold is adjustable/selectable, the trip point can be set for 3.3V rails. The open-drain output pulls to whatever pull-up voltage is used, so it interfaces directly with 3.3V logic without extra components.