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MAX821LUS+T The MAX821LUS+T is a microprocessor supervisory circuit from Analog Devices. It monitors power supplies and asserts a reset signal when voltage drops below a preset threshold.
Mfr Part #:

MAX821LUS+T

Available from 2 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The MAX821LUS+T is a microprocessor supervisory circuit from Analog Devices. It monitors power supplies and asserts a reset signal when voltage drops below a preset threshold.
✓ Total Stock: 306 pcs
$ Price Range: $0.75

MAX821LUS+T Available from 2 distributors

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✓ Non-Authorised
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Braun Electronic Components ✓
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160 pcs
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160 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
146 pcs
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146 pcs On Request 1 On Request On Request On Request On Request On Request
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MAX821LUS+T Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Mounting Type
Number of Voltages Monitored
Operating Temperature
Output
Reset
Reset Timeout
SVHC Present
Supplier Device Package
Supply Current
Type
Voltage
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MAX821LUS+T Description

Short technical summary and product information.

The MAX821LUS+T is a microprocessor supervisory circuit designed by Analog Devices to monitor power supplies in µP and digital systems. It provides a reliable and low-cost solution by eliminating the need for external components. This device asserts a reset signal when the VCC supply voltage falls below a preset threshold and maintains the reset for a pin-selected timeout delay after VCC rises above the threshold.

 

Key features include pin-selectable power-on reset delay options of 1ms (max), 20ms (min), or 100ms (min). It precisely monitors +3V to +5V power supply voltages and operates with a low supply current of 2.5µA. The MAX821LUS+T is guaranteed to operate over temperature from -40°C to +125°C and ensures the RESET output is valid down to 1V for the MAX821 variant. It offers power-supply transient immunity and requires no external components.

 

This supervisory circuit comes in a compact 4-pin SOT-143 package, suitable for surface mounting. Its applications include critical µP and µC power monitoring, portable and battery-powered equipment, bar-code scanners, computers, and controllers.

MAX821LUS+T Quick Information

Product Type: Microprocessor Supervisory Circuit
Canonical Name: MAX821LUS+T Microprocessor Supervisory Circuit
Subcategory: Power Supply Supervisors

MAX821LUS+T Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MAX821LUS+T Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

MAX821LUS+T Features

  • Monitors single power supply voltage.
  • Pin-selectable reset timeout delays.
  • Active-low reset output.
  • Low 2.5µA supply current.
  • Surface mount SOT-143-4 package.

MAX821LUS+T Applications

  • Critical µP and µC power monitoring.
  • Portable and battery-powered equipment.
  • Bar-code scanners and controllers.
  • Digital systems power supervision.

MAX821LUS+T FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage for the MAX821LUS+T?

The MAX821LUS+T monitors a voltage of 4.63V.

What is the operating temperature range for this supervisor IC?

The operating temperature range is -40°C to 125°C.

What package type is the MAX821LUS+T supplied in?

The MAX821LUS+T is supplied in a SOT-143-4 package.

What are the available reset timeout delay options?

The reset timeout delay is pin-selectable to 1ms (max), 20ms (min), or 100ms (min).

What is the supply current for the MAX821LUS+T?

The typical supply current is 2.5µA.

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