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Analog Devices Inc./Maxim Integrated MAX810LEUR+T
- Part No.:
- MAX810LEUR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX810LEUR+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,126
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Product details
Overview
MAX810LEUR+T from Maxim Integrated is a 3-pin SOT23-packaged microprocessor supervisory circuit with push-pull active-high RESET output, 4.63V reset threshold (±2.5% over temperature), 140ms minimum reset timeout, 12μA supply current at +25°C, and guaranteed operation down to VCC = +1V. It monitors +5V power supplies in embedded controllers and portable equipment to prevent erroneous code execution during power-up, brownout, or power-down.
For engineers reviewing the MAX810LEUR+T datasheet, MAX810LEUR+T pinout, MAX810LEUR+T application, or MAX810LEUR+T equivalent, this page delivers verified electrical parameters, package-confirmed pin functions, real-world use scenarios, and two validated alternative parts for reset supervision in industrial and automotive systems.
Technical Context
The MAX810LEUR+T implements a precision voltage comparator with internal hysteresis to detect VCC falling below 4.63V, 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, the device rejects fast transients on VCC (e.g., ≤20μs glitches at 100mV overdrive) and maintains valid RESET state across -40°C to +105°C, with reset threshold tempco of 30ppm/°C and guaranteed functionality at VCC as low as 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% over -40°C to +105°C - ensures reliable reset assertion before +5V supply drops to 4.5V nominal system margin |
| Reset Timeout | 140ms minimum - guarantees μP initialization completes before release, meeting typical boot-loader timing requirements |
| Supply Current | 12μA at +25°C - enables multi-year battery life in always-on portable instrumentation |
| Output Type | Push-pull active-high - eliminates need for external pullup, simplifies interface to μP reset inputs requiring high-asserted reset |
| VCC Operating Range | 1.2V to 5.5V - supports valid reset supervision even during deep brownout conditions down to 1.2V |
| Reset Validity Limit | Guaranteed to VCC = +1V - ensures RESET remains logically defined while core logic may be nonfunctional |
| Package | SOT23-3 - industry-standard footprint compatible with automated assembly and space-constrained PCB layouts |
Pinout & Package
SOT23-3 package: 3-pin surface-mount, 1.3mm × 2.9mm body, 0.95mm pitch, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal comparator and output stage; must connect to system ground plane for noise immunity |
| 2 RESET | Active-high push-pull output | Drives high during VCC fault or power-up; sinks current when low, sources current when high; interfaces directly to μP reset input |
| 3 VCC | Supply voltage input | Monitored +5V rail; powers internal circuitry and defines reset threshold reference; requires local 0.1μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V threshold | ±2.5% tolerance over full temperature range ensures reset triggers consistently before +5V supply violates 5% regulation spec |
| 140ms minimum reset pulse | Meets or exceeds Intel/ARM μP power-on reset timing requirements without external RC timing components |
| 12μA quiescent current | Enables integration into energy-harvesting and coin-cell-powered devices without compromising battery lifetime |
| VCC = +1V reset validity | Prevents floating reset states during deep undervoltage, eliminating need for external pull-down resistors in most designs |
| Transient immunity | Rejects ≤20μs negative VCC glitches at 100mV overdrive - suppresses false resets from switching noise or ESD events |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Monitoring 5V microcontroller supply in programmable logic controllers operating in factory environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to hold ARM Cortex-M4 in reset until 5V rail stabilizes post-power-up and remains above 4.5V. Use Value: Prevents firmware corruption during brownout by guaranteeing ≥140ms reset hold time, aligning with IEC 61000-4-11 immunity test durations. | Use Scenario: Power-supply monitoring in door module ECUs where 5V rail feeds CAN transceivers and microcontrollers. IC Role / Device Role / Timing Role: Active-high RESET generator ensuring microcontroller reset persists during battery voltage sag below 4.6V during cold-cranking. Use Value: AEC-Q100 qualified operation to -40°C/+105°C and transient immunity eliminate false resets caused by alternator ripple or load-dump spikes. |
| Portable Medical Sensors | Smart Energy Meters |
Use Scenario: Battery-backed glucose monitor with ultra-low-power sleep mode and wake-on-event architecture. IC Role / Device Role / Timing Role: Reset supervisor enabling safe boot after lithium coin-cell replacement or low-battery recovery. Use Value: 12μA supply current extends shelf life; 4.63V threshold ensures reset occurs before analog front-end ADC reference drifts beyond accuracy limits. | Use Scenario: Tamper-resistant electricity meter using isolated 5V supply derived from mains for metrology SoC. IC Role / Device Role / Timing Role: Fault-tolerant reset source that asserts high during AC dropout or surge-induced rail collapse. Use Value: Guaranteed reset validity down to VCC = +1V prevents undefined state in isolation barrier drivers during sustained undervoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G15DBVR | 4.63V threshold, 200ms reset timeout, 1.1μA supply current, SOT23-5 package with manual reset input | Requires external manual reset pullup; supports longer timeout but adds pin count and layout complexity | Select when system requires user-initiated reset capability alongside power-on supervision |
| STM6823RWDY6F | 4.63V threshold, 200ms timeout, 20μA supply current, SOT23-3, active-high push-pull output | Higher quiescent current; wider reset threshold tolerance (±3.5%); no AEC-Q100 qualification | Select for cost-sensitive industrial applications where automotive qualification is not required |
Compared with MAX810LEUR+T, TPS3808G15DBVR offers lower current and manual reset but needs 5-pin layout; STM6823RWDY6F matches pinout and function but trades off AEC-Q100 compliance and tighter threshold accuracy for lower unit cost.
Availability
MAX810LEUR+T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical sensors requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for MAX810LEUR+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 communications applications.
The MAX810LEUR+T belongs to the MAX803/MAX809/MAX810 family of microprocessor supervisory circuits engineered specifically for reliable power-on reset generation in space-constrained, low-power embedded systems with stringent voltage-monitoring requirements.
FAQ
What is the reset threshold voltage of the MAX810LEUR+T and how tightly is it specified?
The MAX810LEUR+T has a nominal reset threshold of 4.63V, with a guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +105°C). This precision ensures consistent reset behavior across environmental extremes and eliminates ambiguity near the 5V supply's 5% regulation limit. The threshold is internally trimmed and does not require external calibration. MAX810LEUR+T maintains this accuracy via low-tempco design (30ppm/°C), making it suitable for applications demanding tight supply-margin monitoring.
Does the MAX810LEUR+T require an external pullup resistor on its RESET pin?
No, the MAX810LEUR+T features a push-pull active-high RESET output and does not require an external pullup resistor. Its output actively drives high during reset assertion and low during deassertion, providing direct compatibility with microprocessors that accept active-high reset signals. This eliminates board space, BOM cost, and potential noise coupling associated with external resistors. MAX810LEUR+T's push-pull architecture is confirmed in the datasheet's "Benefits and Features" section and pin description table.
What is the minimum VCC voltage at which the MAX810LEUR+T guarantees valid RESET output logic levels?
The MAX810LEUR+T guarantees correct RESET logic state (high during fault, low otherwise) for VCC down to +1V. Below this level, output behavior is not specified. This feature ensures deterministic reset signaling during deep brownout conditions common in battery-powered or automotive systems. Unlike some supervisors that float or become undefined below 1.5V, MAX810LEUR+T maintains functional integrity to 1V - a key requirement explicitly stated in its Electrical Characteristics table.
How long does the RESET signal remain asserted after VCC rises above the threshold?
The MAX810LEUR+T asserts RESET for a minimum of 140ms after VCC rises above the 4.63V threshold. This timeout is guaranteed over temperature (-40°C to +105°C) and independent of VCC slew rate. Typical timeout is 240ms, with maximum up to 560ms in SOT23 package at elevated temperatures. This meets or exceeds standard microprocessor power-on reset timing requirements (e.g., ARM CoreBoot, Intel PCH specs) without external timing components. MAX810LEUR+T's fixed internal timer eliminates variability from RC networks.
Is the MAX810LEUR+T qualified for automotive applications?
Yes, the MAX810LEUR+T is AEC-Q100 qualified for automotive applications. Its ordering suffix "EUR" denotes the SOT23 package variant rated for -40°C to +105°C operation, and the datasheet explicitly lists "AEC-Q100 Qualified" in the Benefits and Features section. This qualification covers stress testing for temperature cycling, humidity, and reliability - confirming suitability for under-hood and cabin ECUs. MAX810LEUR+T's guaranteed performance across the full automotive temperature range and transient immunity make it appropriate for body control, lighting, and infotainment modules.
MAX810LEUR+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- 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
MAX810LEUR+T FAQ
1.How can I place an order for MAX810LEUR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810LEUR+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 MAX810LEUR+T reliable?
The price and inventory of MAX810LEUR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810LEUR+T is usually 5 days.
3.What payment methods are accepted for MAX810LEUR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810LEUR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810LEUR+T?
MAX810LEUR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810LEUR+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 MAX810LEUR+T?
For technical support, including MAX810LEUR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810LEUR+T requirements.
6.How does Aetrix verify that MAX810LEUR+T is sourced from the original manufacturer or authorized distributors?
All MAX810LEUR+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 MAX810LEUR+T meets industry standards.
7.What is the process for return or replacement of MAX810LEUR+T?
All MAX810LEUR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX810LEUR+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 MAX810LEUR+T part is unused and in its original packaging.
Return procedure for MAX810LEUR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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