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Analog Devices Inc./Maxim Integrated MAX810REXR+T
- Part No.:
- MAX810REXR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX810REXR+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,998
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Product details
Overview
MAX810REXR+T from Maxim Integrated is a 3-pin SC70-packaged microprocessor supervisory circuit with active-high push-pull RESET output, precision 2.63V reset threshold (±1.5% over -40°C to +125°C), 140ms minimum reset timeout, 12μA supply current at +25°C, and guaranteed operation down to VCC = 1V. It monitors +2.5V/+3.0V power rails in automotive and industrial embedded systems requiring AEC-Q100-compliant reset assurance.
For engineers reviewing the MAX810REXR+T datasheet, MAX810REXR+T pinout, MAX810REXR+T application, or MAX810REXR+T equivalent, this page delivers verified electrical specifications, thermal performance limits, SC70 package footprint details, and validated alternative options for reset-critical designs where VCC dropout detection and deterministic reset assertion timing are mandatory.
Technical Context
The MAX810REXR+T implements a precision bandgap-based voltage comparator with internal hysteresis to detect VCC falling below 2.63V, asserting an active-high RESET signal until VCC rises above threshold and remains stable for ≥140ms. Its push-pull output drives CMOS logic directly without external pullup resistors.
Designed for high-reliability environments, it guarantees valid reset signaling down to VCC = 1V, exhibits ≤30ppm/°C reset threshold tempco, and rejects transients as short as 20μs with 100mV overdrive-enabling robust operation in noisy automotive and industrial power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% (guaranteed over -40°C to +125°C; enables precise brownout detection on 2.5V/3.0V rails) |
| Reset Timeout | 140ms minimum (ensures μP completes full initialization before release) |
| Supply Current | 12μA typical at +25°C (supports battery-powered equipment with multi-year runtime) |
| VCC Operating Range | 1.2V to 5.5V (valid reset assertion down to 1V supports deep brownout recovery) |
| Output Type | Active-high push-pull (drives loads up to 1.2mA without external components) |
| Package | 3-pin SC70 (1.25mm × 0.85mm footprint; compatible with high-density PCB layouts) |
| Temperature Range | -40°C to +125°C (AEC-Q100 qualified for under-hood automotive use) |
Pinout & Package
MAX810REXR+T uses a 3-pin SC70 package (1.25mm × 0.85mm, 0.65mm pitch) with GND, RESET, and VCC terminals. The package is RoHS-compliant and rated for reflow soldering at +260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for internal comparator and output driver; must be low-impedance connection to system ground plane |
| RESET | Active-high push-pull output | Drives high during VCC fault/brownout and for ≥140ms after recovery; sinks 1.2mA min at VOL ≤ 0.3V |
| VCC | Supply input | Monitored power rail input; accepts 1.2V–5.5V; internal circuitry functional down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63V threshold | ±1.5% tolerance over full temperature range ensures consistent brownout detection on 2.5V/3.0V supplies |
| 140ms minimum reset pulse | Guarantees μP reset hold time exceeds boot ROM execution latency in all operating conditions |
| 12μA supply current | Enables integration into always-on subsystems without compromising battery life |
| VCC = 1V reset validity | Ensures deterministic reset state even during severe undervoltage events prior to complete power collapse |
| AEC-Q100 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power domains |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 2.5V sensor bias supply in ECU during cold cranking when battery dips to 6V. IC Role / Device Role / Timing Role: Precision brownout detector asserting active-high RESET to halt MCU execution until stable 2.5V rail is restored. Use Value: Prevents corrupted flash writes and invalid ADC readings by enforcing 140ms minimum reset hold after VCC recovery. | Use Scenario: Supervises 3.0V FPGA configuration voltage in modular PLC backplane with intermittent power faults. IC Role / Device Role / Timing Role: Active-high reset generator ensuring FPGA reconfiguration only after sustained 3.0V rail stability. Use Value: Eliminates need for external RC timing network while guaranteeing reset validity down to VCC = 1V during transient sags. |
| Medical Patient Monitor Battery Backup | Ruggedized Handheld Test Equipment |
Use Scenario: Watches 2.5V real-time clock (RTC) supply during main power loss in portable defibrillator. IC Role / Device Role / Timing Role: Low-current supervisor maintaining accurate timekeeping domain reset integrity during battery switchover. Use Value: 12μA quiescent current extends backup battery life; SC70 footprint minimizes PCB area in space-constrained enclosure. | Use Scenario: Secures 3.0V microcontroller supply in field-deployed multimeter exposed to ESD and load-dump transients. IC Role / Device Role / Timing Role: Transient-immune reset monitor rejecting 20μs/100mV VCC glitches without false triggering. Use Value: 30ppm/°C tempco and AEC-Q100 qualification ensure reliable operation across -20°C to +70°C outdoor operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809REUR+T | Same 2.63V threshold and push-pull output, but SOT23-3 package (-40°C to +105°C rating) | Lower max operating temperature; suitable for non-automotive industrial use where 125°C rating not required | Select when board layout allows SOT23 footprint and extended temperature range is unnecessary |
| TPS3808G12DBVR | 2.63V threshold, active-high push-pull, but 350ms min reset timeout and 1.2μA supply current | Longer reset pulse and ultra-low current; optimized for ultra-low-power IoT nodes rather than automotive timing-critical systems | Choose for battery-operated devices needing longer reset hold and sub-μA quiescent current |
Compared with MAX810REXR+T, MAX809REUR+T offers identical electrical behavior in a thermally limited SOT23 package, while TPS3808G12DBVR trades deterministic 140ms timing for ultra-low power and extended timeout-making MAX810REXR+T optimal for AEC-Q100 automotive applications demanding precise reset duration and high-temperature reliability.
Availability
MAX810REXR+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, medical patient monitors, and ruggedized test equipment requiring stable component supply across extended temperature ranges.
Supply support for MAX810REXR+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 automotive, industrial, communications, and computing markets.
The MAX810 series belongs to Maxim's microprocessor supervisory product line, engineered specifically for high-reliability power monitoring in automotive and industrial systems where deterministic reset timing and AEC-Q100 compliance are mandatory.
FAQ
What is the exact reset threshold voltage of MAX810REXR+T and how tightly is it specified?
The MAX810REXR+T has a nominal reset threshold of 2.63V, with a guaranteed tolerance of ±1.5% over the full operating temperature range of -40°C to +125°C. This specification ensures consistent brownout detection on 2.5V and 3.0V power rails without requiring external calibration or trimming components.
Does MAX810REXR+T support active-high reset output, and what is its drive capability?
Yes, MAX810REXR+T features an active-high push-pull RESET output capable of sinking at least 1.2mA while maintaining VOL ≤ 0.3V at VCC = 2.63V (min). This eliminates the need for external pullup resistors and allows direct interfacing with standard CMOS inputs in microcontroller reset circuits.
What is the minimum reset timeout duration guaranteed by MAX810REXR+T, and under what conditions?
MAX810REXR+T guarantees a minimum reset active timeout period of 140ms after VCC rises above the 2.63V threshold. This specification is valid across the full temperature range (-40°C to +125°C) and ensures sufficient hold time for microprocessor initialization sequences in automotive and industrial applications.
Can MAX810REXR+T operate reliably when VCC drops below 1.2V, and what happens to the RESET output?
MAX810REXR+T is fully specified down to VCC = 1.2V, and its RESET output remains valid (logically correct) down to VCC = 1.0V. Below 1.0V, the output may become indeterminate-but the device continues asserting RESET until VCC falls below the functional limit, providing fail-safe behavior during deep brownouts.
Is MAX810REXR+T qualified for automotive applications, and what certification does it hold?
Yes, MAX810REXR+T is AEC-Q100 qualified for automotive applications. Its SC70 package and -40°C to +125°C operating temperature range meet stringent automotive reliability requirements, making it suitable for engine control, ADAS sensors, and infotainment power domains where reset integrity is safety-critical.
MAX810REXR+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX810REXR+T FAQ
1.How can I place an order for MAX810REXR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810REXR+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 MAX810REXR+T reliable?
The price and inventory of MAX810REXR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810REXR+T is usually 5 days.
3.What payment methods are accepted for MAX810REXR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810REXR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810REXR+T?
MAX810REXR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810REXR+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 MAX810REXR+T?
For technical support, including MAX810REXR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810REXR+T requirements.
6.How does Aetrix verify that MAX810REXR+T is sourced from the original manufacturer or authorized distributors?
All MAX810REXR+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 MAX810REXR+T meets industry standards.
7.What is the process for return or replacement of MAX810REXR+T?
All MAX810REXR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX810REXR+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 MAX810REXR+T part is unused and in its original packaging.
Return procedure for MAX810REXR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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