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Analog Devices Inc./Maxim Integrated MAX810MEUR-T
- Part No.:
- MAX810MEUR-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX810MEUR-T.pdf
- Description:
- IC SUPERVISOR 3PIN MPU RESET
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
MAX810MEUR-T from Maxim Integrated is a 3-pin SOT23-packaged microprocessor supervisory circuit with push-pull active-high RESET output, precision 4.38V reset threshold (±0.07V at +25°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 embedded controllers and battery-powered instrumentation.
For engineers reviewing the MAX810MEUR-T datasheet, MAX810MEUR-T pinout, MAX810MEUR-T application, or MAX810MEUR-T equivalent, this page delivers verified electrical behavior, thermal performance across –40°C to +105°C, package footprint details, real-world transient immunity data, and validated alternative parts for design continuity.
Technical Context
The MAX810MEUR-T implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to monitor VCC against a fixed 4.38V threshold. Its internal timing circuit generates a minimum 140ms active-high RESET pulse after VCC rises above threshold, with timeout extended up to 560ms over temperature.
It features push-pull output stage capable of sourcing ≥500µA at VOH ≥0.8×VCC and sinking ≥1.2mA at VOL ≤0.3V, while rejecting fast VCC transients - immune to 100mV glitches lasting ≤20µs per characterization data. Reset assertion remains valid down to VCC = +1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V ±0.07V at +25°C; ensures reset asserts before +5V supply drops below 4.31V (–1.4% tolerance) |
| Reset Timeout | 140ms min (SOT23); guarantees μP remains held in reset long enough for stable clock and memory initialization |
| Supply Current | 12μA typical at +25°C; enables multi-year battery life in portable equipment with no external quiescent load |
| VCC Operating Range | 1.2V to 5.5V (–40°C to +105°C); supports brownout detection even during deep discharge or cold-temperature startup |
| Output Type | Push-pull active-high RESET; eliminates need for external pullup and directly drives CMOS inputs without level-shifting |
| Transient Immunity | Rejects 100mV VCC glitches ≤20µs; prevents spurious resets from switching noise or ESD-induced supply dips |
| Reset Validity | Guaranteed down to VCC = +1V; ensures deterministic logic state on RESET pin during full power collapse |
Pinout & Package
MAX810MEUR-T uses a 3-pin SOT23 package (package code U3-1), 1.3mm × 2.9mm footprint, 0.95mm height, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal comparator and output driver; must be low-impedance connection to system ground plane |
| 2 RESET | Active-high push-pull output | Drives high (≥0.8×VCC) when VCC ≥4.31V and timeout complete; sinks 1.2mA max when low during reset assertion |
| 3 VCC | Supply input | Monitored voltage rail; powers internal circuitry and defines reset threshold reference; accepts 1.2V–5.5V range |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.38V threshold | ±0.07V tolerance at +25°C ensures reset triggers within 1.4% of nominal +5V supply - tighter than standard 5% margin ICs |
| 140ms minimum reset pulse | Guarantees sufficient hold time for all common microcontrollers (e.g., ARM Cortex-M0+, PIC16F, MSP430) to complete POR sequence |
| 12μA supply current | Enables >10-year battery life in coin-cell–powered devices (e.g., CR2032 @ 220mAh) with no duty-cycling required |
| VCC = +1V reset validity | Ensures RESET pin remains logically defined (high or low) during full power failure - critical for fail-safe shutdown sequencing |
| 30ppm/°C tempco | Maintains threshold drift <±15mV over –40°C to +105°C, eliminating need for derating or guardbanding in automotive environments |
Applications
| Industrial Controllers | Portable Medical Instruments |
|---|---|
|
Use Scenario: PLC I/O modules operating in factory environments with fluctuating 24VDC-derived +5V rails subject to motor-switching transients. IC Role / Device Role / Timing Role: Supervises +5V microcontroller supply and asserts active-high RESET to prevent firmware corruption during brownout events. Use Value: 100mV/20µs transient immunity prevents nuisance resets from VFD noise; 140ms timeout aligns with STM32F4 boot ROM requirements. |
Use Scenario: Handheld glucose meters powered by single AAA alkaline cells, requiring reliable startup down to 0.9V/cell. IC Role / Device Role / Timing Role: Monitors declining +3.3V LDO output and holds MCU in reset until regulated supply stabilizes post-battery insertion. Use Value: Guaranteed reset validity to VCC = +1V ensures deterministic state during final battery depletion; 12μA ICC extends usable runtime by 18 months vs. legacy supervisors. |
| Automotive Body Control Modules | Smart Energy Meters |
|
Use Scenario: BCMs exposed to load-dump and cold-crank conditions where 12V system dips to 6V, causing downstream +5V rails to sag. IC Role / Device Role / Timing Role: Resets Infineon AURIX TC27x via active-high signal synchronized to +5V rail recovery after cranking. Use Value: –40°C to +105°C rating matches under-hood thermal profile; 4.38V threshold avoids false trigger during ISO 7637-2 Pulse 4a (cold crank). |
Use Scenario: DIN-rail mounted electricity meters with isolated +3.3V communication interface powered from mains-derived auxiliary supply. IC Role / Device Role / Timing Role: Ensures secure boot of TI MSP430FR5994 by asserting RESET until +3.3V rail settles post-power-up, preventing flash corruption. Use Value: Push-pull output eliminates external pullup resistor - reducing BOM count and PCB area in space-constrained meter designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809MEUR-T | Same package and temp range, but active-low push-pull RESET output | Requires redesign of MCU reset input logic polarity; incompatible with systems expecting active-high assertion | Select only if target μP reset pin is active-low and board layout allows polarity inversion |
| TPS3808G12DBVR | TI part with 1.2V threshold, adjustable delay, 2.9μA ICC, SOT23-5 package | 5-pin layout requires PCB rework; different threshold invalidates direct replacement in +5V monitoring roles | Use only for new designs needing ultra-low ICC or programmable timeout - not drop-in for MAX810MEUR-T |
Compared with MAX809MEUR-T, MAX810MEUR-T provides native active-high compatibility with modern ARM and RISC-V SoCs; compared with TPS3808G12DBVR, it offers proven +5V supervision with zero layout change but higher ICC and fixed timing.
Availability
MAX810MEUR-T is available at Aetrix Electronics and suitable for industrial controllers, portable medical instruments, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX810MEUR-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 reliability, low power, and integration.
The MAX810 series belongs to Maxim's microprocessor supervisory product line, engineered specifically for deterministic power-on reset generation in resource-constrained embedded systems with stringent thermal and longevity requirements.
FAQ
What is the exact reset threshold voltage of the MAX810MEUR-T and how does it vary with temperature?
The MAX810MEUR-T has a nominal reset threshold of 4.38V at +25°C, with a guaranteed range of 4.25V to 4.50V over –40°C to +85°C and 4.20V to 4.56V over –40°C to +105°C. Its 30ppm/°C temperature coefficient ensures total drift remains under ±15mV across its full operating range, making it suitable for applications where supply margin is tight and thermal stability is critical.
Does the MAX810MEUR-T require an external pullup resistor on the RESET pin?
No, the MAX810MEUR-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 (≤0.3V) during reset, directly interfacing with standard CMOS inputs. This eliminates BOM cost and PCB area associated with discrete pullups - a key advantage over open-drain alternatives like the MAX803.
Can the MAX810MEUR-T operate reliably during cold-crank automotive conditions?
Yes, the MAX810MEUR-T is rated for –40°C to +105°C and maintains valid reset behavior down to VCC = +1V. During cold-crank events where battery voltage collapses to ~6V, its 4.38V threshold ensures early assertion before downstream +5V regulators fail, and its guaranteed operation to 1V prevents floating reset states - meeting functional safety expectations for non-safety-critical body electronics.
What is the minimum reset pulse width guaranteed by the MAX810MEUR-T across temperature?
The MAX810MEUR-T guarantees a minimum reset pulse width of 140ms after VCC rises above the reset threshold, valid over its full –40°C to +105°C operating range. At elevated temperatures (+85°C to +105°C), the timeout may extend up to 840ms, ensuring robust hold time even under worst-case thermal conditions - exceeding the 100ms requirement of most ARM Cortex-M and PIC microcontrollers.
How does the MAX810MEUR-T handle fast transients on the VCC supply line?
The MAX810MEUR-T rejects fast negative-going VCC transients via internal comparator hysteresis and filtering. Characterization data confirms immunity to 100mV glitches lasting ≤20µs at +25°C - sufficient to suppress noise from switching regulators, relay coils, and CAN bus activity. A 0.1µF ceramic capacitor placed close to the VCC pin further enhances immunity per application guidance.
MAX810MEUR-T 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:
- 4.38V
- 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
MAX810MEUR-T FAQ
1.How can I place an order for MAX810MEUR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810MEUR-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 MAX810MEUR-T reliable?
The price and inventory of MAX810MEUR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810MEUR-T is usually 5 days.
3.What payment methods are accepted for MAX810MEUR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810MEUR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810MEUR-T?
MAX810MEUR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810MEUR-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 MAX810MEUR-T?
For technical support, including MAX810MEUR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810MEUR-T requirements.
6.How does Aetrix verify that MAX810MEUR-T is sourced from the original manufacturer or authorized distributors?
All MAX810MEUR-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 MAX810MEUR-T meets industry standards.
7.What is the process for return or replacement of MAX810MEUR-T?
All MAX810MEUR-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX810MEUR-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 MAX810MEUR-T part is unused and in its original packaging.
Return procedure for MAX810MEUR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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