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Analog Devices Inc./Maxim Integrated MAX810REUR-T
- Part No.:
- MAX810REUR-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX810REUR-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,571
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Product details
Overview
MAX810REUR-T from Maxim Integrated is a 3-pin SOT23-packaged microprocessor supervisory circuit with active-high push-pull RESET output, precision 2.63V reset threshold (±1.5% over -40°C to +105°C), 140ms minimum reset timeout, 12μA supply current at +25°C, and guaranteed operation down to VCC = 1V. It monitors +2.5V/+3.0V/+3.3V/+5V power rails in portable and automotive embedded systems to prevent μP code-execution errors during power-up, brownout, or power-down.
For engineers reviewing the MAX810REUR-T datasheet, MAX810REUR-T pinout, MAX810REUR-T application, or MAX810REUR-T equivalent, this page delivers verified technical context, exact pin functionality, real-world use cases in battery-powered controllers and automotive ECUs, and validated alternative options for reset supervision design.
Technical Context
The MAX810REUR-T implements a precision voltage comparator with 30ppm/°C tempco 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 robustness in noisy environments, it ignores transients ≤20μs at 100mV overdrive and guarantees valid RESET state down to VCC = 1V. The device operates across -40°C to +105°C and supports AEC-Q100-compliant automotive applications when ordered with /V suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% (min/max over -40°C to +105°C); ensures reliable reset assertion before critical μP voltage margin violation |
| Reset Timeout | 140ms minimum after VCC rise; provides sufficient time for power stabilization and μP initialization |
| Supply Current | 12μA typical at +25°C; enables multi-year battery life in portable instrumentation |
| Output Type | Active-high push-pull; eliminates need for external pullup and supports direct CMOS interface |
| VCC Operating Range | 1.2V to 5.5V; supports operation during deep brownout while maintaining reset validity |
| Temperature Range | -40°C to +105°C; qualified for industrial and under-hood automotive environments |
| Reset Comparator Tempco | 30ppm/°C; minimizes threshold drift across temperature, improving system reliability |
Pinout & Package
MAX810REUR-T uses a 3-pin SOT23 package (JEDEC MO-178AA) with 1.3mm × 2.9mm footprint, 0.95mm height, and 0.95mm lead pitch. Thermal resistance θJA = 250°C/W; continuous power dissipation = 320mW at +70°C (derates 4mW/°C above).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal comparator and output stage; must be low-impedance connection to system ground plane |
| 2 RESET | Active-high push-pull output | Drives high (≥0.8×VCC) when VCC ≥2.63V and stable; drives low (≤0.4V) during reset; sinks 3.2mA min |
| 3 VCC | Supply input | Monitored power rail input; accepts 1.2V–5.5V; internal circuitry remains functional down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63V threshold | ±1.5% tolerance over full temperature range ensures deterministic reset timing without calibration |
| 140ms minimum reset pulse width | Guarantees μP reset hold time exceeds boot ROM access and PLL lock requirements |
| 12μA supply current | Reduces quiescent power in always-on monitoring circuits, critical for coin-cell–powered sensors |
| VCC = 1V reset validity | Maintains defined logic state on RESET pin even during severe brownout, preventing metastability |
| Transient immunity | Rejects <20μs negative VCC glitches at 100mV overdrive, eliminating false resets in electrically noisy systems |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Glucose Monitor |
|---|---|
|
Use Scenario: Monitors 3.0V microcontroller supply in engine bay environment subject to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting RESET during VCC dip below 2.63V and holding for ≥140ms post-recovery. Use Value: Prevents ECU firmware corruption during 12V battery voltage collapse; AEC-Q100 qualification ensures reliability in harsh thermal cycles. |
Use Scenario: Supervises 2.5V rail powering ARM Cortex-M0+ MCU and electrochemical sensor interface in handheld diagnostic device. IC Role / Device Role / Timing Role: Precision 2.63V threshold detects early battery depletion before system brownout, triggering graceful shutdown. Use Value: 12μA quiescent current extends single AAA battery life beyond 2 years in standby mode. |
| Industrial PLC I/O Module | Smart Home Thermostat Controller |
|
Use Scenario: Ensures deterministic restart of 3.3V FPGA-based logic after 24V DC power interruption in factory automation cabinet. IC Role / Device Role / Timing Role: Push-pull active-high RESET directly drives FPGA PROG_B pin without external components. Use Value: Eliminates BOM cost and PCB area for pullup resistor; 140ms timeout exceeds FPGA configuration time. |
Use Scenario: Provides fail-safe reset for 5V-powered HVAC controller during AC line sags and capacitor discharge decay. IC Role / Device Role / Timing Role: Monitors 5V LDO output; asserts high RESET when VCC drops below 2.63V, forcing controlled reboot. Use Value: 30ppm/°C tempco maintains threshold accuracy across -10°C to +60°C ambient, avoiding nuisance resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809REUR-T | Same 2.63V threshold and SOT23 package, but active-low push-pull RESET output | Requires logic inversion or redesign of reset-handling firmware to accommodate active-low signaling | Select when existing system architecture expects active-low reset assertion and no hardware/firmware changes are feasible |
| TPS3808G12DBVR | 2.63V threshold, 140ms timeout, but 1.8V–6.0V VCC range and 2.5μA typical ICC; open-drain output requires pullup | Lower supply current benefits ultra-low-power designs; open-drain allows level-shifting but adds BOM component | Prefer for energy-harvesting or battery-constrained applications where 12μA vs. 2.5μA significantly impacts runtime |
Compared with MAX810REUR-T, MAX809REUR-T offers identical threshold and timing but inverted logic polarity-requiring firmware adaptation-while TPS3808G12DBVR reduces quiescent current by 80% at the cost of added external resistor and reduced noise immunity due to open-drain architecture.
Availability
MAX810REUR-T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical devices, industrial PLC modules, and smart home thermostats requiring stable component supply with AEC-Q100-aligned reliability and long-term production continuity.
Supply support for MAX810REUR-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, automotive, and computing applications, with emphasis on power management, sensing, and interface solutions.
The MAX810 series belongs to Maxim's microprocessor supervisory product line, engineered specifically for deterministic power-on/brownout reset generation in space- and power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX810REUR-T and how stable is it over temperature?
The MAX810REUR-T has a nominal reset threshold of 2.63V with ±1.5% tolerance over the full operating temperature range of -40°C to +105°C. Its reset comparator exhibits a tempco of 30ppm/°C, meaning threshold drift is limited to approximately ±0.0079V across the entire range-ensuring consistent behavior in automotive and industrial thermal environments without recalibration.
Does the MAX810REUR-T require an external pullup resistor on its RESET pin?
No, the MAX810REUR-T features a push-pull output stage and does not require an external pullup resistor. Its active-high RESET pin drives high (≥0.8×VCC) when asserted and low (≤0.4V) during reset, enabling direct connection to CMOS inputs. This eliminates BOM cost and PCB layout complexity compared to open-drain alternatives like the MAX803 series.
Can the MAX810REUR-T operate reliably when the supply voltage drops below 2.0V?
Yes, the MAX810REUR-T guarantees valid RESET output down to VCC = 1.0V. Below this, the internal circuitry ceases operation-but within the 1.2V to 5.5V specified VCC range, the device maintains correct logic states and timing integrity, making it suitable for deep-brownout detection in battery-powered systems.
How does the MAX810REUR-T handle fast voltage transients on the VCC line?
The MAX810REUR-T incorporates transient immunity circuitry that rejects negative-going VCC glitches ≤20μs wide when the overdrive (VTH − VCC) is 100mV. This prevents false resets caused by switching noise or load-dump events, a key requirement in automotive and industrial power systems where electrical noise is prevalent.
Is the MAX810REUR-T pin-compatible with other members of the MAX803/MAX809/MAX810 family?
Yes, the MAX810REUR-T shares identical 3-pin SOT23 pinout (GND, RESET, VCC) with MAX809 variants and MAX803 in SC70-but note the MAX803 uses SC70 only and has open-drain output. While mechanical pin compatibility exists with MAX809REUR-T, the active-high vs. active-low logic polarity difference requires firmware or schematic revision for direct substitution.
MAX810REUR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX810REUR-T FAQ
1.How can I place an order for MAX810REUR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810REUR-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 MAX810REUR-T reliable?
The price and inventory of MAX810REUR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810REUR-T is usually 5 days.
3.What payment methods are accepted for MAX810REUR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810REUR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810REUR-T?
MAX810REUR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810REUR-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 MAX810REUR-T?
For technical support, including MAX810REUR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810REUR-T requirements.
6.How does Aetrix verify that MAX810REUR-T is sourced from the original manufacturer or authorized distributors?
All MAX810REUR-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 MAX810REUR-T meets industry standards.
7.What is the process for return or replacement of MAX810REUR-T?
All MAX810REUR-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX810REUR-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 MAX810REUR-T part is unused and in its original packaging.
Return procedure for MAX810REUR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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