Mfr Part #:

MAX821LUS+

Mfr Name: MAX

The MAX821LUS+ is a power monitor designed for microprocessor systems, featuring a 4Pin SOT-143 package and a reset threshold of 4.38V.

✓ Total Stock: 76 pcs

$ Price Range: $2.23

MAX821LUS+ Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Partservice ✓ Non-Authorised Inventory information	76 pcs On Request	76 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

MAX821LUS+ Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	MAX
Mounting Style	Surface Mount
Number of Pins	4
Output Current	20 mA
Power Dissipation	320 mW
Supply Current	2.5 µA at TA = +25°C
Supply Voltage	1.2 V to 5.5 V

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MAX821LUS+ Description

Short technical summary and product information.

The MAX821LUS+ by MAX is a microprocessor voltage monitor in a 4-pin SOT-143 package. It monitors power supplies in digital systems, asserting a reset signal when voltage falls below a preset threshold. It provides reliable circuit operation with low external component requirements, suitable for 3V and 5V systems. The device operates over a temperature range of -40°C to 125°C and consumes only 2.5µA at room temperature. Its compact package and low power make it ideal for battery-powered and space-constrained applications. The device's reset threshold is 4.38V, with a maximum power dissipation of 320mW, and it supports output currents up to 20mA.

MAX821LUS+ Quick Information

Product Type: Power Monitor

Canonical Name: MAX821LUS+ Microprocessor Voltage Monitor

MAX821LUS+ Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

MAX821LUS+ Estimated Pricing

Qty	Low	High
1+	$2.23	$2.23

Estimated market price range - modelled values for guidance only, not live distributor offers.

MAX821LUS+ Features

High reset threshold of 4.38V
Low supply current of 2.5µA
Operates from 1.2V to 5.5V
Compact SOT-143 package
Temperature range from -40°C to 125°C

MAX821LUS+ Applications

Ideal for microprocessor power supervision
Used in battery-powered digital systems
Suitable for space-constrained applications
Provides reliable reset signaling

MAX821LUS+ FAQs

5 frequently asked questions generated from this part’s specifications.

What is the reset threshold voltage of the MAX821LUS+?

The reset threshold voltage is 4.38V.

What is the operating temperature range of the MAX821LUS+?

The device operates from -40°C to 125°C.

What is the supply voltage range for the MAX821LUS+?

It operates from 1.2V to 5.5V.

Is the MAX821LUS+ RoHS compliant?

Yes, it is RoHS3 compliant.

What package does the MAX821LUS+ come in?

It comes in a 4-pin SOT-143 package.