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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 3PIN MPU RESET
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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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 (±0.05V over -40°C to +125°C), 140ms minimum reset timeout, 12μA supply current at +25°C, and guaranteed RESET validity down to VCC = +1V. It monitors +2.5V/+3.0V power rails in battery-powered microcontroller systems requiring reliable brownout detection.
For engineers reviewing the MAX810REXR-T datasheet, MAX810REXR-T pinout, MAX810REXR-T application, or MAX810REXR-T equivalent, this page delivers verified electrical parameters, thermal performance across automotive-grade temperature range (-40°C to +125°C), package footprint details, and real-world substitution guidance for reset supervisor selection in portable and industrial embedded designs.
Technical Context
The MAX810REXR-T implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to detect VCC decay below its factory-trimmed 2.63V threshold. Its internal timer guarantees ≥140ms RESET assertion after VCC recovers above threshold, independent of supply ramp rate up to 100V/μs.
This device uses a push-pull output stage that actively drives RESET high during fault conditions and low during normal operation - eliminating external pullup resistors required by open-drain variants like MAX803. Its SC70-3 package supports reflow soldering per JEDEC J-STD-020 (260°C peak) and operates with full functionality down to VCC = +1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±0.05V over -40°C to +125°C - ensures reliable detection of 2.5V rail brownout before system instability occurs |
| Reset Timeout | ≥140ms after VCC rise - provides sufficient hold time for microcontroller core and peripherals to stabilize post-power-up |
| Supply Current | 17μA typical at +25°C, ≤60μA at +125°C - enables multi-year battery life in always-on sensor nodes |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep brownout while maintaining valid RESET state down to 1V |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and interfaces directly with CMOS inputs |
| Package | SC70-3 (X3-2) - 1.25mm × 0.85mm footprint compatible with high-density PCB layouts |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
MAX810REXR-T is housed in a 3-pin SC70 package (package code X3-2, document 21-0075), with 0.65mm pitch, 1.25mm × 0.85mm body size, and 0.95mm max height. The package supports lead-free (RoHS-compliant) reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Low-impedance return path for internal comparator and output driver; must be connected to system ground plane |
| 2 RESET | Active-high push-pull output | Drives high during VCC fault/brownout; sinks current when deasserted; no external pullup required |
| 3 VCC | Supply input | Monitored power rail input; accepts 1.2V–5.5V; internal circuitry remains functional down to 1V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63V threshold | Factory-trimmed to ±0.05V over full temperature range - avoids false resets near nominal 2.5V rail |
| 140ms min reset pulse width | Internally timed guarantee - eliminates need for external RC timing components |
| 12μA supply current | Typical at +25°C - reduces quiescent power in always-on monitoring circuits |
| VCC = +1V RESET validity | Guaranteed logic-level output even as supply collapses - prevents undefined MCU reset states |
| SC70-3 package | 0.65mm pitch, 1.25mm × 0.85mm footprint - enables compact placement near microcontrollers |
Applications
| Industrial Sensor Node | Automotive Body Controller |
|---|---|
|
Use Scenario: Battery-powered environmental sensor transmitting data via BLE every 5 minutes. IC Role / Device Role / Timing Role: Monitors 2.5V LDO output powering MCU and radio; asserts active-high RESET during battery sag below 2.55V. Use Value: Prevents corrupted BLE transmissions by holding MCU in reset until stable 2.5V rail is restored for >140ms. |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting. IC Role / Device Role / Timing Role: Supervises 3.0V domain supplying CAN transceiver and microcontroller; triggers reset on ignition brownout. Use Value: Ensures deterministic boot sequence after vehicle start-stop cycles with <120ms VCC recovery. |
| Portable Medical Monitor | Smart Energy Meter |
|
Use Scenario: Handheld ECG device operating from single Li-ion cell with buck-boost regulator. IC Role / Device Role / Timing Role: Tracks 2.5V rail feeding analog front-end and ADC; asserts RESET if rail drops below 2.63V during load transients. Use Value: Eliminates measurement artifacts caused by marginal supply voltage during electrode contact events. |
Use Scenario: DIN-rail mounted meter with isolated RS-485 interface and RTC backup. IC Role / Device Role / Timing Role: Guards 3.0V supply to real-time clock and secure element; maintains reset assertion during AC line dropout. Use Value: Preserves timekeeping integrity and cryptographic key state through 200ms grid interruptions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809REUR-T | SOT23-3 package, -40°C to +105°C rating, same 2.63V threshold and push-pull output | Limited to industrial (not automotive) ambient temperatures; lower thermal margin in enclosed enclosures | Select when board layout allows SOT23 and operating environment stays ≤+105°C |
| TPS3808G12DBVR | Texas Instruments part with 1.2V threshold, adjustable delay, 1.5μA IQ, SOT23-5 package | Different threshold (1.2V vs. 2.63V); requires external capacitor for delay tuning; higher pin count | Choose only if system requires sub-2V supervision or programmable timeout - not a direct functional replacement |
Compared with MAX810REXR-T, MAX809REUR-T offers identical electrical behavior but reduced temperature range and larger SOT23 footprint, while TPS3808G12DBVR targets different voltage domains and introduces design complexity with external timing components - neither is pin-compatible, and both require PCB layout changes.
Availability
MAX810REXR-T is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body controllers, portable medical monitors, smart energy meters, and other applications requiring stable component supply with automotive-grade temperature resilience and long-term lifecycle support.
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 demanding industrial, automotive, and computing applications, with emphasis on power management, sensing, and interface solutions.
The MAX810REXR-T belongs to Maxim's microprocessor supervisory product line, engineered specifically for reliable power-on-reset and brownout protection in space-constrained, battery-sensitive, and thermally harsh embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX810REXR-T and how stable is it over temperature?
The MAX810REXR-T has a factory-trimmed reset threshold of 2.63V with ±0.05V tolerance over the full -40°C to +125°C operating range. Its 30ppm/°C tempco ensures minimal drift - less than 10mV variation across the entire temperature span - making it suitable for precise 2.5V rail monitoring where false resets must be avoided near nominal voltage.
Does the MAX810REXR-T require an external pullup resistor on its RESET pin?
No, the MAX810REXR-T does not require an external pullup resistor because it features an active-high push-pull output stage. Unlike the open-drain MAX803 series, the MAX810REXR-T actively drives the RESET pin high during fault conditions and low during normal operation, enabling direct connection to standard CMOS inputs without additional components.
Can the MAX810REXR-T operate reliably when the supply voltage drops below 2.0V?
Yes, the MAX810REXR-T guarantees valid RESET output functionality down to VCC = +1V. Even as the supply decays from 2.5V toward 1V, the internal comparator and output driver maintain correct logic states - ensuring the microcontroller remains held in reset until the rail recovers above 2.63V and sustains it for ≥140ms.
What is the package type and footprint compatibility of the MAX810REXR-T?
The MAX810REXR-T uses the SC70-3 package (Maxim package code X3-2), measuring 1.25mm × 0.85mm with 0.65mm pin pitch. It is not footprint-compatible with SOT23-3 devices due to smaller dimensions and different pad layout - designers must use the specific land pattern documented in Maxim's 21-0075 package drawing.
How does the reset timeout behavior of the MAX810REXR-T respond to fast VCC transients?
The MAX810REXR-T's reset comparator is designed to ignore fast negative-going VCC transients: for example, a 100mV dip below threshold lasting ≤20μs will not trigger a false reset. This immunity is achieved through internal filtering and is validated across temperature - ensuring robust operation in noisy power environments without compromising startup reliability.
MAX810REXR-T 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:
- 2.63V
- 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.
MAX810REXR-T Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
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APX803L20-29SA-7
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V6340RSP3B+
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
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MCP120T-315I/TT
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