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Analog Devices Inc./Maxim Integrated MXD1810UR41+
- Part No.:
- MXD1810UR41+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MXD1810UR41+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,993
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Product details
Overview
MXD1810UR41+ 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 guaranteed operation down to VCC = +1V. It monitors power supply integrity during power-up, brownout, and power-down in embedded controllers and portable equipment.
For engineers reviewing the MXD1810UR41+ datasheet, MXD1810UR41+ pinout, MXD1810UR41+ application, or MXD1810UR41+ equivalent, key selection criteria include its 4.12V threshold accuracy, 4µA supply current, SOT23-3 package compatibility, manual-reset immunity (not supported), and open-drain interface suitability for bidirectional μP reset pins.
Technical Context
The MXD1810UR41+ implements a precision bandgap-based voltage comparator with hysteresis to detect VCC drops below 4.12V, asserting RESET low within 5µs. Its internal timer guarantees ≥100ms reset assertion after VCC recovers, independent of supply ramp rate.
This device belongs to the MXD1810–MXD1813 series for +5V systems and uses BiCMOS process technology. It features no external components, transient immunity up to 100µs at 100mV overdrive, and operates across –40°C to +105°C without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.12V ±2.5% over –40°C to +105°C - ensures reliable brownout detection for +5V logic rails |
| Supply Current | 4µA typical at +3.6V - enables multi-year battery life in portable monitoring applications |
| Reset Timeout | 100ms minimum - satisfies μP power-on reset timing requirements per Intel/ARM specifications |
| VCC Operating Range | +1.0V to +5.5V - guarantees valid RESET state even during deep brownout conditions |
| Output Type | Open-drain active-low with internal 5.5kΩ pullup - interfaces directly with bidirectional μP reset pins without external components |
| Package | SOT23-3 - 2.92mm × 1.3mm footprint compatible with high-density PCB layouts |
| Temperature Range | –40°C to +105°C - qualified for industrial and extended-temperature embedded control environments |
Pinout & Package
MXD1810UR41+ is housed in a 3-pin SOT23 package (U3-1 outline, land pattern 90-0179), with 100% lead(Pb)-free construction indicated by the '+' suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; sinks ≥10mA when asserted; internal 5.5kΩ pullup to VCC enables direct connection to bidirectional μP reset pins |
| 2 | VCC | Supply input and reset-threshold monitor node; accepts +1.0V to +5.5V; comparator ignores transients <100µs at 100mV overdrive |
| 3 | GND | Ground reference for all internal circuitry and reset comparator; must be connected to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.12V reset threshold | Factory-trimmed ±2.5% over full temperature range eliminates calibration overhead in production test |
| No external components required | Integrated pullup, comparator, and timer reduce BOM count and PCB area vs. discrete reset solutions |
| Low 4µA quiescent current | Enables use in always-on battery-backed systems such as smart meters and IoT edge sensors |
| Guaranteed RESET validity to VCC = +1V | Ensures deterministic reset behavior during deep undervoltage events where other supervisors fail |
| Transient-immune comparator | Rejects VCC glitches ≤100µs duration, preventing spurious resets in noisy industrial power environments |
Applications
| Industrial PLC Controllers | Smart Energy Meters |
|---|---|
|
Use Scenario: Monitoring 5V auxiliary supply in programmable logic controller I/O modules subject to 12V rail transients. IC Role / Device Role / Timing Role: Active-low reset supervisor ensuring μP restart only after stable 5V rail recovery, with 100ms timeout preventing premature firmware execution. Use Value: Eliminates need for external RC network and Schmitt trigger, reducing component count while maintaining EN 61000-4-4 ESD immunity compliance. |
Use Scenario: Power-on sequencing and brownout protection in battery-backed electricity meters with dual 5V/3.3V domains. IC Role / Device Role / Timing Role: Open-drain RESET output interfaces directly with ARM Cortex-M0+ bidirectional reset pin, enabling shared reset arbitration with RTC backup domain. Use Value: Internal 5.5kΩ pullup removes external resistor, saving 0.5mm² PCB area and improving long-term reliability in humid meter enclosures. |
| Network Attached Storage (NAS) Enclosures | Medical Diagnostic Handhelds |
|
Use Scenario: Supervising 5V system rail in fanless NAS units where thermal cycling causes gradual VCC droop during sustained disk activity. IC Role / Device Role / Timing Role: Precision 4.12V threshold detects marginal 5V regulation before data corruption occurs, asserting RESET before USB/SATA link failure. Use Value: ±2.5% threshold accuracy over temperature avoids false resets during ambient shifts from 0°C to 55°C, improving field uptime. |
Use Scenario: Ensuring deterministic boot sequence in portable ultrasound probes powered by Li-ion batteries discharging from 4.2V to 3.0V. IC Role / Device Role / Timing Role: Operates down to VCC = +1V, guaranteeing valid RESET signal throughout battery depletion-critical for FDA Class II device fault-safety compliance. Use Value: 4µA supply current extends probe runtime between charges without compromising reset integrity during low-battery shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 4.00V threshold (±2%), 140µA supply current, push-pull output | Lacks open-drain interface; requires external pullup for bidirectional μP pins | Select when lower cost and push-pull drive are acceptable, and board layout allows external resistor |
| TPS3808G33DBVR | 3.3V threshold, 1.1µA supply current, adjustable timeout via capacitor | Designed for 3.3V systems; not rated for 5V operation or 4.12V threshold accuracy | Prefer for ultra-low-power 3.3V applications where threshold and timeout flexibility outweigh fixed 5V compatibility |
Compared with MXD1810UR41+, MAX809TRD3+T offers higher supply current but simpler drive capability, while TPS3808G33DBVR provides superior power efficiency at the expense of 5V-system compatibility and fixed threshold precision-making MXD1810UR41+ optimal for space-constrained, high-reliability +5V embedded designs requiring open-drain interoperability.
Availability
MXD1810UR41+ is available at Aetrix Electronics and suitable for industrial PLC controllers, smart energy meters, network-attached storage enclosures, and medical diagnostic handhelds requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MXD1810UR41+ 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 high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MXD1810–MXD1813 family was designed specifically for cost-sensitive, space-constrained +5V microprocessor supervisory applications demanding precision threshold accuracy, ultra-low power, and minimal external components.
FAQ
What is the exact reset threshold voltage of MXD1810UR41+ and how stable is it over temperature?
The MXD1810UR41+ has a factory-set reset threshold of 4.12V with ±2.5% accuracy over the full operating range of –40°C to +105°C. This specification is guaranteed by design-not just typical-and ensures reliable brownout detection across industrial thermal environments without recalibration. The threshold remains stable due to on-chip bandgap reference trimming and BiCMOS process optimization.
Does MXD1810UR41+ support manual reset via an external pushbutton?
No, MXD1810UR41+ does not include manual reset functionality. That feature is exclusive to the MXD1813/MXD1818 variants (e.g., MXD1813UR41+). MXD1810UR41+ provides only power-supply monitoring with automatic reset assertion on VCC drop below 4.12V and a fixed 100ms timeout-no external RESET pin debouncing or pushbutton detection circuitry is integrated.
Can MXD1810UR41+ drive a standard microcontroller reset pin directly?
Yes, MXD1810UR41+ can drive standard microcontroller reset pins directly due to its open-drain active-low RESET output with internal 5.5kΩ pullup to VCC. This configuration interfaces natively with bidirectional reset pins (e.g., ARM Cortex-M, PIC, MSP430) without external components, satisfying IOL ≥10mA sink capability at VOUT = 0.4V and supporting common 3.3V/5V logic families.
What is the minimum VCC voltage at which MXD1810UR41+ guarantees valid RESET output state?
MXD1810UR41+ guarantees valid RESET/RESET output logic states down to VCC = +1.0V, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic reset behavior during deep brownout conditions where competing supervisors may enter undefined states-critical for fail-safe operation in battery-powered and safety-critical systems.
Is MXD1810UR41+ RoHS-compliant and what does the '+' suffix indicate?
Yes, MXD1810UR41+ is RoHS-compliant and lead(Pb)-free. The '+' suffix in the part number explicitly denotes lead-free packaging per JEDEC J-STD-609, replacing the legacy '-T' suffix used for leaded versions. This designation is verified in Maxim's official ordering information and package documentation (outline U3-1, land pattern 90-0179).
MXD1810UR41+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Strip
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.12V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MXD1810UR41+ FAQ
1.How can I place an order for MXD1810UR41+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1810UR41+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MXD1810UR41+ reliable?
The price and inventory of MXD1810UR41+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1810UR41+ is usually 5 days.
3.What payment methods are accepted for MXD1810UR41+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1810UR41+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1810UR41+?
MXD1810UR41+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1810UR41+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MXD1810UR41+?
For technical support, including MXD1810UR41+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1810UR41+ requirements.
6.How does Aetrix verify that MXD1810UR41+ is sourced from the original manufacturer or authorized distributors?
All MXD1810UR41+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MXD1810UR41+ meets industry standards.
7.What is the process for return or replacement of MXD1810UR41+?
All MXD1810UR41+ units undergo pre-shipment inspection (PSI). If there is an issue with MXD1810UR41+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MXD1810UR41+ part is unused and in its original packaging.
Return procedure for MXD1810UR41+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXD1810UR41+ Tags
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