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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:1,213
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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 −40°C to +105°C), 140ms minimum reset timeout, 12μA supply current at +25°C, and guaranteed operation down to VCC = 1V. It monitors +5V digital systems in automotive and industrial controllers to prevent erroneous code execution during power-up, brownout, or voltage sag.
For engineers reviewing the MAX810LEUR-T datasheet, MAX810LEUR-T pinout, MAX810LEUR-T application, or MAX810LEUR-T equivalent, this page delivers verified electrical parameters, thermal performance limits, package dimensions, real-world use cases for reset supervision, and validated alternative parts for design flexibility and supply continuity.
Technical Context
The MAX810LEUR-T implements a precision bandgap-based reset comparator with 30ppm/°C temperature coefficient and immunity to fast VCC transients (e.g., ≤20μs glitches at 100mV overdrive). Its push-pull active-high RESET output drives CMOS logic directly without external pullup resistors.
It operates across VCC = 1.2V to 5.5V and guarantees valid reset assertion down to VCC = 1V - critical for fail-safe shutdown sequencing. The device is AEC-Q100 qualified for automotive applications and fully specified over −40°C to +105°C in SOT23 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% (min 4.50V, max 4.75V over −40°C to +85°C); ensures reliable reset assertion before +5V supply drops below 4.5V nominal system margin. |
| Reset Timeout | 140ms minimum (240ms typical, 560ms max over −40°C to +85°C); provides sufficient hold time for μP initialization and clock stabilization. |
| Supply Current | 24μA (typ) to 60μA (max) at −40°C to +85°C; enables battery-powered instrumentation with multi-year runtime. |
| VCC Operating Range | 1.2V to 5.5V; supports operation during deep brownout and allows use in mixed-voltage systems with fallback monitoring. |
| RESET Output Type | Push-pull active-high; eliminates need for external pullup, simplifies interface to μP reset pins requiring high-true assertion. |
| Temperature Range | −40°C to +105°C (SOT23); certified for under-hood automotive and industrial control environments. |
| AEC-Q100 Qualification | Qualified per AEC-Q100 Rev G Grade 2; meets stress testing requirements for automotive electronics reliability. |
Pinout & Package
MAX810LEUR-T uses a 3-pin SOT23 package (JEDEC MO-178AA, 1.3mm × 2.9mm × 1.0mm height) with gull-wing leads, RoHS-compliant matte-tin plating, and thermal pad omitted.
| 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 reset output | Drives high (VOH ≥ 0.8×VCC) when VCC ≥ threshold; sinks current (VOL ≤ 0.4V at 3.2mA) when VCC < threshold - directly interfaces to μP reset input. |
| 3 (VCC) | Supply voltage input | Monitored power rail; accepts 1.2V–5.5V; internal circuitry remains functional down to 1.2V, with reset valid to 1V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V reset threshold | ±2.5% tolerance over full temperature range ensures deterministic reset timing without margin uncertainty in +5V systems. |
| 140ms minimum reset pulse width | Guarantees μP core and PLLs achieve stable clock lock and register initialization before release from reset. |
| 12μA typical supply current | Enables integration into always-on subsystems (e.g., CAN wake-up monitors) without measurable battery drain. |
| VCC = 1V reset validity | Ensures RESET remains asserted until supply collapses completely - prevents spurious release during catastrophic brownout. |
| Transient immunity | Rejects VCC glitches ≤20μs wide at 100mV overdrive, eliminating false resets caused by switching noise or ESD coupling. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 5V microcontroller supply during cold cranking, where battery voltage dips to 6–9V causing regulator sag. IC Role / Device Role / Timing Role: Active-high RESET supervisor asserting reset until 5V rail stabilizes above 4.5V for ≥140ms post-cranking recovery. Use Value: Prevents ECU firmware corruption during engine start by guaranteeing clean reset release only after stable power is restored. |
Use Scenario: Supervises isolated 5V logic supply feeding FPGA configuration and analog front-end ADCs in noisy factory environments. IC Role / Device Role / Timing Role: Push-pull active-high RESET output directly drives FPGA PROG_B and ADC RESET pins without level-shifting. Use Value: Eliminates external pullup components and reduces BOM count while maintaining AEC-Q100-compliant reliability. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU |
Use Scenario: Ensures fail-safe shutdown of motor drivers and valve actuators when main 5V supply falls due to capacitor aging or load surge. IC Role / Device Role / Timing Role: Resets ARM Cortex-M0+ controller with active-high signal synchronized to power rail recovery, holding safety-critical peripherals in reset. Use Value: Meets IEC 62304 Class C software safety requirements by enforcing deterministic power-on sequence and brownout response. |
Use Scenario: Monitors backup 3.3V supercapacitor supply during AC mains failure to maintain real-time clock and secure memory state. IC Role / Device Role / Timing Role: Asserts active-high RESET to metering SoC when supercap voltage drops below 3.08V (MAX810TEUR-T variant), but MAX810LEUR-T used for primary 5V rail. Use Value: Enables seamless switchover between primary and backup supplies without firmware intervention or data loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809LEUR-T | Identical 4.63V threshold and SOT23 package, but features active-low push-pull RESET output. | Requires inverting logic on μP reset input or redesign of reset signal routing; incompatible with systems expecting active-high assertion. | Select when legacy μP design mandates active-low reset or when board layout already accommodates inverted polarity. |
| TPS3808G33DBVR | TI part with 3.08V threshold, 200ms reset timeout, 1.6μA quiescent current, and enable input - no direct threshold match for +5V systems. | Not drop-in: different pinout (5-pin SOT23), requires PCB redesign; suited for 3.3V systems or designs needing programmable delay. | Choose only if redesigning for ultra-low-power 3.3V monitoring or adding enable-controlled reset sequencing. |
Compared with MAX810LEUR-T, MAX809LEUR-T offers identical accuracy and thermal performance but inverted reset polarity - requiring logic adaptation, whereas TPS3808G33DBVR targets lower-voltage rails and adds complexity with enable control and non-matching pinout, making neither a pin-compatible replacement but viable alternatives for specific architecture constraints.
Availability
MAX810LEUR-T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, and medical infusion pump controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX810 series belongs to Maxim's microprocessor supervisory product line, engineered specifically for deterministic power-on reset generation, brownout protection, and fail-safe system initialization in harsh-temperature embedded environments.
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 guaranteed limits of 4.50V (minimum) and 4.75V (maximum) over the full operating temperature range of −40°C to +85°C. This ±2.5% tolerance ensures predictable reset behavior in +5V systems without requiring calibration or external trimming components.
Does the MAX810LEUR-T provide a push-pull or open-drain RESET output, and what is its logic polarity?
The MAX810LEUR-T features a push-pull RESET output with active-high polarity. When VCC is below the reset threshold, RESET is driven low; when VCC rises above threshold and remains stable for ≥140ms, RESET is driven high. This eliminates the need for an external pullup resistor and simplifies interfacing with microcontrollers that require high-true reset signals.
Can the MAX810LEUR-T operate reliably at VCC voltages below 1.2V, and what happens to RESET output below that point?
The MAX810LEUR-T is fully specified down to VCC = 1.2V, and its RESET output remains valid (guaranteed logic state) down to VCC = 1.0V. Below 1.0V, the internal circuitry ceases to function reliably; however, the device is not designed or tested for operation below 1.2V, and RESET behavior is undefined below that limit.
Is the MAX810LEUR-T qualified for automotive applications, and which AEC-Q100 grade does it meet?
Yes, the MAX810LEUR-T is AEC-Q100 qualified per Revision G, Grade 2 (−40°C to +105°C), with full qualification testing including HTOL, TC, UHAST, and ESD. This certification confirms suitability for under-hood automotive applications such as engine control, body electronics, and ADAS domain controllers.
What package type and footprint does the MAX810LEUR-T use, and are land patterns available?
The MAX810LEUR-T uses a standard 3-pin SOT23 package (JEDEC MO-178AA, 1.3mm × 2.9mm × 1.0mm), compatible with automated pick-and-place and reflow soldering. Official land patterns and package drawings are published by Maxim Integrated (now Analog Devices) at maximintegrated.com/packages and match IPC-7351B density Level A.
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:
- Obsolete
- 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 ~ 85°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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