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Analog Devices Inc./Maxim Integrated MAX810REUR
- Part No.:
- MAX810REUR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX810REUR.pdf
- Description:
- IC SUPERVISOR 3PIN MPU RESET
- Quantity:
- Payment:
- Shipping:
Inventory:4,614
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Product details
Overview
The MAX810REUR from Maxim Integrated is a 3-pin SOT23-3 microprocessor supervisory circuit with push-pull active-high 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 - used to ensure reliable power-on initialization in +2.5V/+3.0V/+3.3V digital systems.
For engineers reviewing the MAX810REUR datasheet, MAX810REUR pinout, MAX810REUR application, or MAX810REUR equivalent, this page delivers verified technical context, package-specific timing behavior, real-world interface constraints, and validated alternative options for industrial embedded and battery-powered designs requiring deterministic reset assertion during brownout and power-up conditions.
Technical Context
The MAX810REUR implements a precision voltage comparator with 30ppm/°C tempco to monitor VCC against a trimmed 2.63V threshold, asserting an active-high RESET signal when VCC falls below that level and holding it asserted for ≥140ms after VCC rises above threshold. Its push-pull output drives high to VCC − 1.5V (at 3.2mA sink) and low to ≤0.4V (at 3.2mA sink), eliminating external pull-up requirements.
Designed for SOT23-3 packaging with -40°C to +105°C operating range, the device features immunity to fast VCC transients (e.g., 20µs negative glitches ≤100mV below threshold won't trigger reset) and maintains valid logic states down to VCC = 1V - critical for low-voltage portable systems where supply collapse must be cleanly detected before µP execution begins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% (ensures reset asserts before system instability at 3.0V nominal supply) |
| Reset Timeout | ≥140ms min (guarantees µP completes internal initialization before release) |
| Supply Current | 12µA at +25°C (enables multi-year battery life in always-on monitoring nodes) |
| VCC Operating Range | 1.2V to 5.5V (supports direct use with 2.5V, 3.0V, 3.3V, and 5V rails) |
| Output Type | Push-pull active-high (drives RESET high without external components; compatible with µP reset inputs expecting active-high assertion) |
| Temperature Range | -40°C to +105°C (validated for automotive under-hood and industrial control environments) |
| Transient Immunity | Rejects 20µs VCC glitches ≤100mV below threshold (prevents spurious resets from switching noise) |
Pinout & Package
MAX810REUR is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), 2.92mm × 1.3mm × 1.0mm body, with gull-wing leads and 0.95mm pitch. Pin 1 = RESET (active-high push-pull output), Pin 2 = GND, Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RESET) | Active-high push-pull output | Drives high to VCC−1.5V (3.2mA sink) and low to ≤0.4V (3.2mA sink); 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 power rail input (1.2V–5.5V); bypass capacitor (0.1µF) required adjacent to pin for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63V threshold | ±1.5% tolerance over full temperature range ensures deterministic reset point for 3.0V systems |
| 140ms minimum reset pulse | Guaranteed hold time prevents premature µP release during slow-rising or noisy power rails |
| 12µA quiescent current | Enables >10-year battery life in coin-cell-powered IoT sensors and wearables |
| VCC = 1V operation | Valid RESET state maintained down to 1V supply, enabling robust brownout detection before complete collapse |
| No external components | Eliminates BOM cost and layout area vs. discrete RC reset circuits; reduces design validation effort |
Applications
| Industrial PLC I/O Modules | Battery-Powered Data Loggers |
|---|---|
Use Scenario: PLC modules powered by 3.0V backup batteries during AC mains failure must retain configuration and avoid corrupted register writes. IC Role / Device Role / Timing Role: MAX810REUR monitors the 3.0V rail and asserts active-high RESET to halt µP execution until stable power returns. Use Value: Prevents EEPROM corruption by ensuring µP remains held in reset until VCC exceeds 2.63V and sustains ≥140ms - matching typical battery recovery profile. | Use Scenario: Remote environmental sensor node wakes every 10 minutes on RTC interrupt, samples sensors, and transmits data via BLE. IC Role / Device Role / Timing Role: MAX810REUR provides power-on reset and brownout protection for the 2.5V MCU core, asserting RESET high during low-battery undervoltage events. Use Value: 12µA supply current extends CR2032 battery life beyond 5 years; 2.63V threshold aligns precisely with 2.5V rail dropout margin. |
| Automotive Body Control Units | Medical Portable Diagnostic Devices |
Use Scenario: BCM microcontroller must initialize reliably after cold-cranking (battery dips to 6V then recovers slowly). IC Role / Device Role / Timing Role: MAX810REUR supervises the 3.3V LDO output feeding the MCU, asserting active-high RESET until rail stabilizes above 2.63V for ≥140ms. Use Value: -40°C to +105°C rating matches under-dash thermal environment; push-pull output eliminates risk of floating reset line during cranking transients. | Use Scenario: Handheld ultrasound probe uses a 3.0V Li-ion battery and requires fail-safe boot sequence to prevent misdiagnosis from partial firmware load. IC Role / Device Role / Timing Role: MAX810REUR holds the ARM Cortex-M4 in reset until 3.0V rail reaches 2.63V and remains stable for 140ms post-power-up. Use Value: 30ppm/°C tempco ensures threshold stability across clinical operating temperatures (0°C–40°C); active-high output matches MCU reset pin polarity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809RDBZR | 2.63V threshold, SOT23-3, push-pull active-low output, 150ms reset timeout, 1.2µA supply current | Requires µP with active-low reset input; lower ICC benefits ultra-low-power sleep modes | Select TLV809RDBZR only if system reset architecture uses active-low assertion and sub-µA quiescent current is prioritized over timing compatibility |
| TPS3808G33DBVR | 3.3V threshold, SOT23-6, adjustable delay, 2.5µA ICC, supports manual reset input | Higher threshold unsuitable for 3.0V systems; 6-pin package increases layout area and cost | Choose TPS3808G33DBVR only when 3.3V rail supervision is needed and programmable delay or manual reset functionality is required |
Compared with TLV809RDBZR and TPS3808G33DBVR, the MAX810REUR uniquely combines 2.63V precision threshold, active-high push-pull output, and 140ms fixed timeout in a 3-pin SOT23 - making it the only drop-in solution for 3.0V systems requiring direct µP reset compatibility without redesigning reset logic or PCB layout.
Availability
MAX810REUR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, battery-powered data loggers, and automotive body control units requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX810REUR 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, communications, and computing applications - emphasizing reliability, integration, and performance in harsh environments.
The MAX810REUR belongs to Maxim's microprocessor supervisory product line, engineered specifically for deterministic power-monitoring in space-constrained, low-power embedded systems where accurate voltage thresholding and minimal external components are mandatory.
FAQ
What is the exact reset threshold voltage of the MAX810REUR and how tightly is it specified?
The MAX810REUR has a nominal reset threshold of 2.63V, specified with ±1.5% tolerance over the full operating temperature range of -40°C to +105°C. This precision is achieved through laser trimming and ensures consistent brownout detection across voltage rails like 3.0V and 3.3V without requiring system-level calibration. The MAX810REUR's 30ppm/°C tempco further guarantees stability across thermal gradients encountered in automotive and industrial deployments.
Does the MAX810REUR require an external pull-up resistor on its RESET pin?
No, the MAX810REUR does not require an external pull-up resistor because it features a push-pull output stage. Its RESET pin actively drives high (to VCC − 1.5V at 3.2mA sink) and low (to ≤0.4V at 3.2mA sink), eliminating dependency on external biasing. This simplifies layout, reduces BOM count, and avoids potential floating-state issues during power transitions - a key advantage over open-drain alternatives like the MAX803 series.
What is the minimum VCC voltage at which the MAX810REUR guarantees correct RESET logic state?
MAX810REUR guarantees correct RESET logic state down to VCC = 1.0V. Below this level, the output may become undefined; however, the device continues asserting RESET high while VCC remains below 2.63V and holds it for ≥140ms after crossing the threshold upward. This behavior ensures µP reset integrity even during deep brownout events common in battery-powered equipment, where supply collapse occurs gradually.
Can the MAX810REUR be used with a 2.5V supply rail?
Yes, the MAX810REUR supports VCC from 1.2V to 5.5V, making it fully compatible with 2.5V systems. Its 2.63V reset threshold is intentionally selected to provide ~5% headroom above 2.5V nominal - ensuring reset assertion occurs before functional failure while avoiding nuisance triggering from normal supply ripple. The device draws only 12µA at +25°C, preserving battery life in 2.5V portable applications such as handheld medical instruments.
How does the MAX810REUR handle fast VCC transients, and what is its immunity specification?
The MAX810REUR rejects fast negative-going VCC transients up to 20µs duration when the glitch magnitude is ≤100mV below the 2.63V threshold - per Figure 1 in the datasheet. This immunity stems from internal comparator hysteresis and filtering, preventing spurious resets caused by switching noise or ESD-induced supply disturbances. A 0.1µF ceramic capacitor placed directly at the VCC pin further enhances this robustness, meeting IEC 61000-4-4 compliance requirements in industrial environments.
MAX810REUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX810REUR FAQ
1.How can I place an order for MAX810REUR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810REUR 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 reliable?
The price and inventory of MAX810REUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810REUR is usually 5 days.
3.What payment methods are accepted for MAX810REUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810REUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810REUR?
MAX810REUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810REUR 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?
For technical support, including MAX810REUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810REUR requirements.
6.How does Aetrix verify that MAX810REUR is sourced from the original manufacturer or authorized distributors?
All MAX810REUR 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 meets industry standards.
7.What is the process for return or replacement of MAX810REUR?
All MAX810REUR units undergo pre-shipment inspection (PSI). If there is an issue with MAX810REUR, 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 part is unused and in its original packaging.
Return procedure for MAX810REUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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