Analog Devices Inc./Maxim Integrated MXD1810XR41

Overview

MXD1810XR41 from Maxim Integrated is a precision 5V-system microprocessor reset supervisor IC with active-low open-drain RESET output, factory-trimmed 4.12V reset threshold (±2.5% over temperature), 100ms minimum reset timeout, and 4μA supply current. It monitors VCC in industrial embedded controllers and portable equipment to prevent erroneous code execution during power-up, brownout, or transient events.

For engineers reviewing the MXD1810XR41 datasheet, MXD1810XR41 pinout, MXD1810XR41 application, or MXD1810XR41 equivalent, key selection criteria include its SC70-3 package, guaranteed RESET validity down to VCC = +1V, immunity to fast VCC transients, internal 5.5kΩ pullup resistor, and compatibility with manual-reset pushbutton interfaces requiring debounced detection.

Technical Context

The MXD1810XR41 implements a precision bandgap-based voltage comparator with hysteresis to detect VCC falling below 4.12V, triggering an active-low reset assertion. Its internal timer guarantees ≥100ms reset pulse width after VCC recovers above threshold, independent of VCC slew rate.

This device belongs to the MXD1810–MXD1813 series for +5V systems and features open-drain RESET output with integrated 5.5kΩ pullup - eliminating external components while enabling bidirectional reset pin interfacing and wired-OR configurations.

Key Specifications

Pinout & Package

MXD1810XR41 is housed in a 3-pin SC70 package (outline X3-2, land pattern 90-0208), optimized for high-density PCB layouts. The package is RoHS-compliant and rated for -40°C to +105°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor reset supervision applications.

Compared with MAX809TR41D3T and TPS3808G33DBVR, MXD1810XR41 uniquely combines factory-trimmed 4.12V accuracy, open-drain output with integrated pullup, and SC70-3 footprint - delivering lowest component count and smallest area for 5V reset supervision without design compromises.

Availability

MXD1810XR41 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, set-top boxes, POS terminals, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MXD1810XR41 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in analog, mixed-signal, and high-reliability ICs for industrial, communications, and consumer applications.

The MXD1810–MXD1813 family was designed specifically for cost-sensitive, space-constrained 5V microprocessor systems requiring precision brownout detection, minimal external components, and robust transient immunity.

FAQ

What is the exact reset threshold voltage of MXD1810XR41 and how stable is it over temperature?

The MXD1810XR41 has a factory-set reset threshold of 4.12V, with guaranteed accuracy of ±2.5% across the full operating temperature range of -40°C to +105°C. This stability is achieved through laser-trimmed bandgap reference circuitry and is validated per Electrical Characteristics Table on page 2 of the official datasheet. The MXD1810XR41 maintains this precision without external calibration or compensation components.

Does MXD1810XR41 support manual reset functionality via an external pushbutton?

No, MXD1810XR41 does not include manual reset detection. That feature is exclusive to the MXD1813/MXD1818 variants (e.g., MXD1813XR41). The MXD1810XR41 provides only power-on/power-fail reset supervision with automatic 100ms timeout. For pushbutton-initiated reset with debouncing, select MXD1813XR41 instead - it shares the same 4.12V threshold and SC70 package but adds 1.5μs minimum pulse detection on the RESET pin.

Can MXD1810XR41 drive a microcontroller reset pin that requires a push-pull signal?

No - MXD1810XR41 has an open-drain, active-low RESET output with internal 5.5kΩ pullup to VCC, not a push-pull driver. It is intended for use with microcontrollers having open-drain–compatible or bidirectional reset inputs (e.g., ARM Cortex-M series with internal pullup). For push-pull drive capability, consider MXD1812XR41 (same package, same threshold, active-high push-pull output) or MAX809TR41D3T (active-low push-pull, SOT23-3).

What is the minimum VCC voltage at which MXD1810XR41 guarantees valid RESET output state?

The MXD1810XR41 guarantees correct RESET logic state (high impedance when not asserted, low when asserted) down to VCC = +1.2V, as specified in Absolute Maximum Ratings and Electrical Characteristics. Below +1.2V, output behavior is not guaranteed - however, the device continues asserting RESET until VCC falls below +1.0V, ensuring fail-safe operation during deep brownout. This is confirmed in the "Guaranteed RESET/RESET Valid to VCC = +1V" feature bullet on page 1.

Is MXD1810XR41 compatible with lead-free soldering processes?

Yes, MXD1810XR41 is available in lead(Pb)-free packaging. Per Maxim's ordering information, the standard -T suffix denotes leaded packaging, while +T indicates lead-free. MXD1810XR41-T uses leaded terminations; to obtain lead-free, order MXD1810XR41+T. Both versions support standard reflow profiles including JEDEC J-STD-020D for MSL 1 handling, with peak temperature up to +260°C and 10-second duration at soldering temperature.