Skip to main content
Log in
Analog Devices MAX820MCSE — Microcontrollers & Processors (MCU / MPU / DSP)

MAX820MCSE Power Supply Monitor, 4.37V Threshold, 16-SOIC

MPNMAX820MCSE
End of Life

Analog Devices MAX820MCSE Power Supply Monitor IC, Active High/Active Low Reset, Push-Pull Output, 4.37V Threshold, 140ms Timeout, 16-SOIC Surface Mount.

$5.36Ref. price · indicative, final on quote
Analog Devices MAX820MCSE datasheet (PDF)
Packaging16-SOIC (0.154", 3.90mm Width)
RoHSRoHS non-compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX820MCSE specifications
ParameterValue
TypePower Supply Monitor
MountingSurface Mount
Voltage - threshold4.37V
Number of voltages monitored1
Operating temperature0°C ~ 70°C (TA)
ResetActive High/Active Low
OutputPush-Pull, Totem Pole
PackageBulk
Reset timeout140ms Minimum
Case16-SOIC (0.154\", 3.90mm Width)

Product details

Device function and reset architecture

The MAX820MCSE is a Power Supply Monitor IC from Analog Devices, designed to supervise the voltage rail of a microcontroller or non-volatile memory and assert a reset signal when the supply drops below the threshold. It monitors a single voltage with a threshold of 4.37V and provides both active-high and active-low reset outputs in a push-pull, totem-pole configuration — covering both reset polarities without needing an external pull-up resistor.

Lifecycle and compliance status

The part is listed as RoHS non-compliant, so it does not meet the EU RoHS directive for lead-free assembly; verify your board's regulatory requirements before specifying.

Frequently asked questions

Where can I buy MAX820MCSE and how do I get a price?

MAX820MCSE is available to order through independent distribution.

What does the 4.37V threshold mean for a 5V system?

At a 4.37V threshold, the reset asserts when the 5V rail drops about 12.6% below nominal — typical for a 5V±10% supply. This catches brown-outs before the logic supply falls out of the guaranteed operating range.

Does MAX820MCSE provide both active-high and active-low reset signals?

Yes, the MAX820MCSE outputs both active-high and active-low resets from the same push-pull stage, so you can drive both reset polarity inputs on a processor without extra inverters.