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Analog Devices Inc./Maxim Integrated MAX810SEXR
- Part No.:
- MAX810SEXR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX810SEXR.pdf
- Description:
- IC SUPERVISOR 3PIN MPU RESET
- Quantity:
- Payment:
- Shipping:
Inventory:1,271
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Product details
Overview
MAX810SEXR from Maxim Integrated is a 3-pin microprocessor supervisory circuit with push-pull active-high RESET output, designed to monitor +3.0V power supplies in embedded systems. It asserts reset when VCC falls below 2.63V, holds reset for ≥140ms after VCC recovers, draws only 17µA typical supply current, operates from -40°C to +125°C, and is housed in SC70-3 package - ideal for battery-powered controllers and portable instrumentation.
For engineers reviewing the MAX810SEXR datasheet, MAX810SEXR pinout, MAX810SEXR application, or MAX810SEXR equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in critical µP monitoring, and validated alternative options - all grounded in Maxim's official specifications for the EXR-grade SC70 variant.
Technical Context
The MAX810SEXR implements a precision voltage comparator with 2.63V reset threshold (±1.5% over temperature), immune to fast VCC transients down to 20µs at 100mV overdrive. Its internal reset timer guarantees ≥140ms active timeout after power-up, with reset validity maintained down to VCC = 1V.
Unlike open-drain variants (e.g., MAX803), the MAX810SEXR uses a push-pull output stage that actively drives high during reset assertion - eliminating external pull-up resistors and enabling direct interface with µP reset inputs requiring active-high logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% - precisely matches +3.0V supply rails; ensures reset triggers before system instability occurs. |
| Reset Timeout | ≥140ms - guarantees sufficient hold time for full µP initialization across temperature (-40°C to +125°C). |
| Supply Current | 17µA typical at +25°C - enables multi-year operation in coin-cell–powered devices without compromising supervision reliability. |
| Operating Temp | -40°C to +125°C - qualified for automotive under-hood and industrial control environments where thermal stress is extreme. |
| VCC Range | 1.2V to 5.5V - supports valid reset assertion even during deep brownout conditions down to 1.2V input. |
| Output Type | Push-pull active-high - eliminates external components and provides rail-to-rail logic drive without pull-up dependency. |
| Reset Validity | Guaranteed to VCC = +1V - ensures deterministic reset state during gradual power collapse, preventing undefined µP behavior. |
Pinout & Package
MAX810SEXR is packaged in SC70-3 (3-pin ultra-small surface-mount) with 0.65mm pitch, footprint-compatible with SOT23-3 but optimized for space-constrained PCB layouts. Thermal performance supports continuous operation at +125°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RESET) | Active-high push-pull output | Drives high during reset assertion; sinks 1.2mA / sources 150µA; no external pull-up required. |
| 2 (GND) | Ground reference | Return path for internal comparator and output stage; must be low-impedance connection to system ground plane. |
| 3 (VCC) | Supply input | Monitored voltage source; powers internal circuitry and defines reset threshold reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63V threshold | ±1.5% tolerance over full temperature range ensures consistent trip point across automotive and industrial operating zones. |
| No external components | Self-contained supervision - no capacitors, resistors, or trimming needed for basic reset functionality. |
| 140ms minimum reset pulse | Guaranteed timing meets µP reset specification requirements without external RC timing networks. |
| VCC transient immunity | Rejects negative glitches as short as 20µs at 100mV overdrive - prevents spurious resets in noisy power environments. |
| Low 17µA supply current | Enables always-on supervision in energy-sensitive applications like IoT sensors and wearables. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Supervising +3.0V microcontroller supply in programmable logic controllers exposed to wide ambient temperature swings and EMI-rich factory floors. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high reset to ARM Cortex-M4 core during brownout or cold-cranking events. Use Value: Prevents firmware corruption by guaranteeing ≥140ms reset hold time even at +125°C, while 2.63V threshold aligns exactly with 3.0V rail tolerance limits. |
Use Scenario: Monitoring 3.0V domain powering CAN transceivers and door-lock MCUs in vehicle body electronics. IC Role / Device Role / Timing Role: Active-high reset generator interfacing directly with bidirectional reset pins on Infineon AURIX TC3xx series. Use Value: Push-pull output eliminates need for external pull-up, reducing BOM count and improving noise margin in 12V battery–derived 3.0V domains. |
| Portable Medical Sensors | Smart Energy Meters |
|
Use Scenario: Ensuring reliable startup of low-power ADC and BLE SoC in battery-operated glucose monitors. IC Role / Device Role / Timing Role: Power-on reset supervisor for Nordic nRF52840, asserting reset until stable 3.0V rail is confirmed. Use Value: 17µA quiescent current extends CR2032 battery life beyond 5 years in sleep-mode dominant operation. |
Use Scenario: Supervising metering SoC supply in ANSI C12.22–compliant smart meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Brownout detector for TI MSP430FR5994, triggering safe shutdown before EEPROM write corruption occurs. Use Value: Valid reset output down to VCC = 1.2V ensures deterministic fail-safe behavior during grid-sag events lasting >100ms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR-T | Same 2.63V threshold and push-pull output, but rated for -40°C to +105°C in SOT23-3 package. | Limited to commercial/industrial ambient; not qualified for extended-temperature automotive or under-hood use. | Select when cost sensitivity outweighs extended temperature requirement and SOT23 footprint is preferred. |
| TPS3123E18DBVR | 2.64V threshold, 180ms reset timeout, 1.8V–5.5V VCC range, but only rated to +85°C and requires external capacitor for delay tuning. | Not drop-in: different pinout (VDD/NC/GND vs. VCC/GND/RESET), lacks guaranteed 125°C operation. | Consider only if design already uses TI ecosystem and thermal requirements are ≤+85°C. |
Compared with MAX809SEUR-T, the MAX810SEXR offers 20°C higher max operating temperature and SC70-3 footprint for denser layouts; versus TPS3123E18DBVR, it delivers guaranteed 140ms timing without external components and full automotive-grade thermal qualification.
Availability
MAX810SEXR is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensors, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX810SEXR 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 demanding industrial, automotive, and communications applications - emphasizing reliability, integration, and thermal robustness.
The MAX810SEXR belongs to Maxim's microprocessor supervisory product line, engineered specifically for fail-safe power monitoring in safety-critical embedded systems where deterministic reset behavior under voltage fault conditions is mandatory.
FAQ
What is the exact reset threshold voltage of the MAX810SEXR?
The MAX810SEXR has a nominal reset threshold of 2.63V, with ±1.5% tolerance over its full operating temperature range (-40°C to +125°C). This value is laser-trimmed during production and documented in Maxim's official datasheet revision 6 (2005), ensuring precise alignment with +3.0V supply rails in industrial and automotive applications. The MAX810SEXR does not require external calibration.
Does the MAX810SEXR require an external pull-up resistor on its RESET pin?
No, the MAX810SEXR does not require an external pull-up resistor because it features a push-pull active-high output stage. Unlike the open-drain MAX803, the MAX810SEXR actively drives the RESET pin high during assertion and low during deassertion - eliminating external components and simplifying layout. This design reduces BOM count and improves noise immunity in compact PCBs.
What is the minimum reset pulse width guaranteed by the MAX810SEXR?
The MAX810SEXR guarantees a minimum reset pulse width of 140ms after VCC rises above the 2.63V threshold. This timing is internally generated and fully specified across the device's operating temperature range (-40°C to +125°C) and supply voltage range (1.2V to 5.5V). No external timing components are needed to achieve this specification.
Can the MAX810SEXR operate reliably at 125°C ambient temperature?
Yes, the MAX810SEXR is fully specified and tested for continuous operation from -40°C to +125°C ambient temperature in its SC70-3 package. This rating is explicitly stated in the "Ordering Information" table and confirmed in the "Absolute Maximum Ratings" section of the datasheet. It is qualified for under-hood automotive and high-temperature industrial applications where thermal derating is critical.
How does the MAX810SEXR handle fast VCC transients or power supply glitches?
The MAX810SEXR incorporates built-in transient immunity: its reset comparator ignores negative-going VCC glitches as short as 20µs when the overdrive (VTH – VCC) is 100mV. This behavior is characterized in Figure 1 of the datasheet and ensures spurious resets do not occur during switching noise or load-dump events - a key reliability feature in electrically noisy environments like automotive and industrial systems.
MAX810SEXR 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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX810SEXR FAQ
1.How can I place an order for MAX810SEXR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810SEXR 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 MAX810SEXR reliable?
The price and inventory of MAX810SEXR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810SEXR is usually 5 days.
3.What payment methods are accepted for MAX810SEXR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810SEXR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810SEXR?
MAX810SEXR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810SEXR 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 MAX810SEXR?
For technical support, including MAX810SEXR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810SEXR requirements.
6.How does Aetrix verify that MAX810SEXR is sourced from the original manufacturer or authorized distributors?
All MAX810SEXR 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 MAX810SEXR meets industry standards.
7.What is the process for return or replacement of MAX810SEXR?
All MAX810SEXR units undergo pre-shipment inspection (PSI). If there is an issue with MAX810SEXR, 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 MAX810SEXR part is unused and in its original packaging.
Return procedure for MAX810SEXR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX810SEXR Tags
-
MIC826SYMT-TR
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APX803L20-29SA-7
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