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MAX803SEXR+T The MAX803SEXR+T is a supervisory circuit from Analog Devices designed for monitoring power supplies in microprocessor systems. It provides a reset signal when VCC falls below a preset threshold.
Mfr Part #:

MAX803SEXR+T

Available from 4 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The MAX803SEXR+T is a supervisory circuit from Analog Devices designed for monitoring power supplies in microprocessor systems. It provides a reset signal when VCC falls below a preset threshold.
✓ Total Stock: 2,494 pcs
$ Price Range: $0.75

MAX803SEXR+T Available from 4 distributors

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
1,619 pcs
On Request
1619 pcs On Request 1 On Request On Request On Request On Request On Request
Rayichip ✓
Non-Authorised Inventory information
436 pcs
On Request
436 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
Non-Authorised Inventory information
416 pcs
On Request
416 pcs On Request 1 On Request On Request On Request On Request 2026-02-23 21:33:16
Bristol Electronics ✓
Non-Authorised Inventory information
23 pcs
On Request
23 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

MAX803SEXR+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
Supplier Device Package
Supply Current
Type
Voltage
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MAX803SEXR+T Description

Short technical summary and product information.

The MAX803SEXR+T is a microprocessor supervisory circuit from Analog Devices, designed to monitor power supplies in digital systems. It asserts a reset signal when the VCC supply voltage drops below a preset threshold, maintaining the reset for at least 140ms after VCC rises above the threshold. This device is suitable for use with +5V, +3.3V, +3.0V, and +2.5V powered circuits.

 

Key features include a precision monitoring of power-supply voltages, a 140ms minimum power-on-reset pulse width, and a low supply current of 12μA. The reset output is guaranteed to be valid for VCC down to 1V, offering excellent power supply transient immunity. The MAX803SEXR+T has an active-low, open-drain output configuration.

 

This supervisory circuit is available in a 3-pin SC-70 package, suitable for surface mount applications. It operates over a temperature range of -40°C to 125°C (TA). The device is ideal for critical μP and μC power monitoring in portable, battery-powered equipment, computers, controllers, and automotive applications.

MAX803SEXR+T Quick Information

Product Type: Supervisory IC
Series: MAX803
Canonical Name: MAX803SEXR+T Microprocessor Supervisory Circuit
Subcategory: Power Supply Supervisor

MAX803SEXR+T Compliance

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

MAX803SEXR+T Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

MAX803SEXR+T Features

  • Monitors single power supply voltage.
  • Provides active-low reset output.
  • 140ms minimum power-on-reset pulse.
  • Operates down to 1V VCC.
  • Low 12μA supply current.

MAX803SEXR+T Applications

  • Critical microprocessor power monitoring.
  • Used in portable battery-powered devices.
  • Suitable for automotive applications.
  • Ensures system stability during power fluctuations.

MAX803SEXR+T FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage threshold?

2.93V nominal.

What is the reset timeout?

140ms minimum.

What is the supply voltage range?

1.2V to 5.5V.

What is the operating temperature range?

-40°C to 125°C.

What package is this available in?

SC-70 (SOT-323) with 3 pins.

What type of output does it have?

Open drain or open collector, active low.

What is the typical supply current?

12μA.

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