Mfr Part #:

MXD1818UR31+T

Mfr Name: Analog Devices / Maxim Integrated

The Analog Devices MXD1818UR31+T is a microprocessor reset circuit designed to monitor power supplies in digital systems. It features a precise 3.06V reset threshold and a minimum 100ms reset timeout period.

✓ Total Stock: 120,533 pcs

$ Price Range: $0.75

MXD1818UR31+T Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	120,533 pcs On Request	120533 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

MXD1818UR31+T Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	Supervisors
Manufacturer Name	Analog Devices / Maxim Integrated
Mounting Type	Surface Mount
Operating Temperature	-40°C to +105°C
Operating Voltage	+1V
Power Consumption	4μA
SVHC Present	Not Present
Tape & Reel	Yes

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MXD1818UR31+T Description

Short technical summary and product information.

The MXD1818UR31+T from Analog Devices is part of a family of microprocessor reset circuits that monitor power supply voltages in μP and digital systems. This device is factory-set with a reset threshold voltage of 3.06V, ensuring reliable operation for +2.5V, +3V, and +3.3V systems.

Key features include a guaranteed reset signal assertion when VCC declines below the preset threshold, with the reset kept active for at least 100ms after VCC rises above the threshold. It also offers power supply transient immunity and low power consumption of only 4μA, making it suitable for portable equipment. The MXD1818UR31+T operates down to +1V VCC and is specified for an extended temperature range of -40°C to +105°C.

This supervisor IC is available in a space-saving 3-pin SOT-23 package, ideal for applications requiring minimal board space. It provides a debounced manual-reset feature, asserting a reset if the RESET pin is pulled low for more than 1.5μs, which helps debounce signals from mechanical switches. The open-drain output configuration includes an internal pull-up resistor to VCC.

Applications for this component include critical μP and μC monitoring, computers and controllers, intelligent instruments, set-top boxes, printers, and portable/battery-powered equipment.

MXD1818UR31+T Quick Information

Product Type: Supervisor

Series: MXD1818

Canonical Name: MXD1818UR31+T Microprocessor Reset Circuit

MXD1818UR31+T Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

MXD1818UR31+T Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

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

MXD1818UR31+T Features

Monitors +2.5V, +3V, +3.3V power supplies.
Fixed 3.06V reset threshold voltage.
Minimum 100ms reset timeout period.
Low 4μA power consumption.
Available in SOT-23-3 package.

MXD1818UR31+T Applications

Critical microprocessor monitoring.
Portable and battery-powered devices.
Computers and controllers.
Intelligent instruments.
Set-top boxes and printers.

MXD1818UR31+T FAQs

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

What is the reset threshold voltage of the MXD1818UR31+T?

3.06V.

What is the reset threshold accuracy?

±2.5% over temperature.

What is the minimum reset timeout period?

100ms.

What is the minimum operating voltage?

+1V (VCC down to 1V).

What is the typical power consumption?

4μA.

What is the operating temperature range?

-40°C to +105°C.

What package is the MXD1818UR31+T available in?

SOT-23-3 surface-mount package.