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Analog Devices Inc./Maxim Integrated MXD1810XR41-T
- Part No.:
- MXD1810XR41-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MXD1810XR41-T.pdf
- Description:
- IC SUPERVISOR MICROPROCES RESET
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MXD1810XR41-T from Maxim Integrated is a precision 5V-system microprocessor reset supervisor IC in SC70-3 package, featuring active-low open-drain RESET output, factory-set 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 MXD1810XR41-T datasheet, MXD1810XR41-T pinout, MXD1810XR41-T application, or MXD1810XR41-T equivalent, key selection criteria include its 4.12V threshold accuracy, 4μA supply current, SC70-3 footprint compatibility, manual-reset immunity (not supported), and open-drain interface with internal 5.5kΩ pullup for bidirectional μP reset pins.
Technical Context
The MXD1810XR41-T implements a precision bandgap-based voltage comparator monitoring VCC against a factory-trimmed 4.12V threshold, with built-in hysteresis and transient immunity up to 100µs for -200mV overdrive. Its reset generator enforces a fixed 100ms minimum assertion time after VCC recovery, independent of temperature or supply variation.
As an open-drain active-low device, it interfaces directly with bidirectional microcontroller reset pins (e.g., Motorola 68HC11) without external pullup components. Unlike MXD1813/MXD1818 variants, it lacks manual-reset debounce circuitry and does not respond to external RESET pin pulls.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.12V ±2.5% over -40°C to +105°C - ensures reliable 5V system brownout detection with minimal false triggers |
| Supply Current | 4µA typical at +3.6V - enables multi-year battery life in portable equipment | Reset Timeout | 100ms minimum - guarantees sufficient hold time for full μP initialization across all operating conditions |
| Operating Voltage Range | +1.0V to +5.5V - supports valid RESET logic state even during deep brownout down to 1V |
| Output Type | Open-drain active-low with 5.5kΩ internal pullup - eliminates need for external resistor when interfacing with bidirectional reset pins |
| Package | SC70-3 (2.0mm × 2.1mm) - space-constrained PCB designs requiring minimal footprint |
| Temperature Range | -40°C to +105°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
MXD1810XR41-T is housed in a 3-pin SC70 package (outline X3-2, land pattern 90-0208), optimized for high-density layouts. Pin 1 is RESET (open-drain active-low), Pin 2 is VCC (supply and threshold monitor input), and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; sinks current when asserted; internal 5.5kΩ pullup to VCC maintains high state when inactive |
| 2 | VCC | Primary supply input and reset threshold reference point; monitored continuously for voltage drop below 4.12V |
| 3 | GND | System ground reference for comparator, timer, and output stage; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.12V threshold | Factory-trimmed ±2.5% accuracy over full temperature range ensures consistent 5V system supervision without calibration |
| No external components | Integrated pullup, comparator, and timer eliminate discrete resistors, capacitors, and timing elements - reduces BOM count and layout area |
| 100ms fixed timeout | Guaranteed minimum reset assertion duration prevents premature μP release during unstable power ramp-up |
| 4μA ultra-low ICC | Enables always-on reset monitoring in battery-powered devices with negligible impact on standby current budget |
| VCC = +1V operation | Valid RESET logic state maintained down to 1V supply - critical for graceful shutdown sequencing in energy-harvesting or backup systems |
Applications
| Computers and Controllers | Intelligent Instruments |
|---|---|
Use Scenario: Monitoring 5V rail in industrial PLC CPU modules during cold start and line sags. IC Role / Device Role / Timing Role: Active-low reset supervisor asserting RESET until VCC stabilizes above 4.12V and holds for ≥100ms. Use Value: Prevents firmware execution errors caused by marginal VCC during power-up transients. | Use Scenario: Power supervision in handheld multimeters with lithium coin-cell backup. IC Role / Device Role / Timing Role: Open-drain RESET output interfaces directly with MCU's bidirectional reset pin without external pullup. Use Value: Reduces component count and PCB area while maintaining valid reset signaling down to VCC = +1V. |
| Set-Top Boxes | Portable/Battery-Powered Equipment |
Use Scenario: Ensuring clean boot sequence after AC power interruption or remote reset command. IC Role / Device Role / Timing Role: Voltage monitor triggering 100ms reset pulse upon 5V rail collapse below 4.12V. Use Value: Eliminates need for RC-based reset circuits prone to temperature drift and capacitor aging. | Use Scenario: Supervising main 5V DC-DC output in portable medical sensors. IC Role / Device Role / Timing Role: Low-power (4μA) supervisor enabling continuous monitoring during multi-week battery standby. Use Value: Extends operational lifetime without compromising power-on reliability or brownout protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | 4.00V threshold (±2.5%), SOT23-3, push-pull active-low output | Requires external pullup for bidirectional μP reset pins; no internal pullup | Select when board layout already uses SOT23 and push-pull drive is preferred over open-drain |
| TPS3808G33DBVR | 3.3V threshold, SOT23-6, adjustable delay, 1.6μA ICC | Designed for 3.3V systems; incompatible threshold for 5V supervision | Choose only for 3.3V applications requiring ultra-low current; not a functional substitute for MXD1810XR41-T |
Compared with MAX809TRD3-T, MXD1810XR41-T offers integrated pullup and SC70 footprint but lacks push-pull drive; versus TPS3808G33DBVR, it provides correct 4.12V threshold for 5V systems but consumes higher quiescent current - making MXD1810XR41-T the optimal choice for space-constrained 5V industrial controllers needing open-drain compatibility.
Availability
MXD1810XR41-T is available at Aetrix Electronics and suitable for computers and controllers, intelligent instruments, and portable/battery-powered equipment requiring stable component supply, long-term industrial temperature support, and compact SC70 packaging.
Supply support for MXD1810XR41-T 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) designs precision analog and mixed-signal ICs for industrial, computing, and consumer applications, emphasizing reliability, integration, and low-power operation.
The MXD1810–MXD1818 family targets cost-sensitive, space-constrained microprocessor supervisory needs in 5V and 3.3V systems, delivering factory-set thresholds, zero-external-component operation, and robust transient immunity.
FAQ
What is the exact reset threshold voltage of the MXD1810XR41-T?
The MXD1810XR41-T has a factory-set reset threshold of 4.12V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +105°C). This value is confirmed in the Electrical Characteristics table under "MXD181__ R41" condition, where VTH min = 4.00V, typ = 4.12V, max = 4.24V.
Does the MXD1810XR41-T support manual reset functionality via the RESET pin?
No, the MXD1810XR41-T does not support manual reset. Only MXD1813 and MXD1818 variants include debounced manual-reset detection that responds to a >1.5µs low pulse on the RESET pin. The MXD1810XR41-T's RESET pin is output-only and unidirectional.
What is the function of the internal pullup resistor in the MXD1810XR41-T?
The MXD1810XR41-T includes a 5.5kΩ internal pullup resistor connected between RESET and VCC. This allows direct interface with microcontrollers having bidirectional reset pins (e.g., Motorola 68HC11) without requiring an external pullup, simplifying design and reducing component count.
Can the MXD1810XR41-T operate reliably when VCC drops below 2.0V?
Yes - the MXD1810XR41-T is guaranteed to maintain valid RESET logic states down to VCC = +1.0V, as specified in Absolute Maximum Ratings and Electrical Characteristics. This ensures controlled shutdown behavior in deep brownout conditions common in battery-backed systems.
Is the MXD1810XR41-T pin-compatible with other devices in the MXD181x family?
Yes, all MXD1810–MXD1818 variants in SC70-3 package share identical pinout: Pin 1 = RESET, Pin 2 = VCC, Pin 3 = GND. However, output type (open-drain vs. push-pull) and features (e.g., manual reset) differ - so functional substitution requires verification of reset polarity and feature requirements.
MXD1810XR41-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- 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:
- SC-70-3
MXD1810XR41-T FAQ
1.How can I place an order for MXD1810XR41-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1810XR41-T 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 MXD1810XR41-T reliable?
The price and inventory of MXD1810XR41-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1810XR41-T is usually 5 days.
3.What payment methods are accepted for MXD1810XR41-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1810XR41-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1810XR41-T?
MXD1810XR41-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1810XR41-T 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 MXD1810XR41-T?
For technical support, including MXD1810XR41-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1810XR41-T requirements.
6.How does Aetrix verify that MXD1810XR41-T is sourced from the original manufacturer or authorized distributors?
All MXD1810XR41-T 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 MXD1810XR41-T meets industry standards.
7.What is the process for return or replacement of MXD1810XR41-T?
All MXD1810XR41-T units undergo pre-shipment inspection (PSI). If there is an issue with MXD1810XR41-T, 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 MXD1810XR41-T part is unused and in its original packaging.
Return procedure for MXD1810XR41-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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