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Analog Devices Inc./Maxim Integrated MAX810LEXR
- Part No.:
- MAX810LEXR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX810LEXR.pdf
- Description:
- IC SUPERVISOR 3PIN MPU RESET
- Quantity:
- Payment:
- Shipping:
Inventory:1,471
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Product details
Overview
MAX810LEXR from Maxim Integrated is a 3-pin microprocessor supervisory circuit with push-pull active-high RESET output, designed to monitor +5V power supplies and assert reset during brownout or power-up conditions. It features a 4.63V reset threshold, 140ms minimum reset timeout, 12µA supply current, guaranteed operation down to VCC = +1V, and SC70-3 packaging for space-constrained embedded systems.
For engineers reviewing the MAX810LEXR datasheet, MAX810LEXR pinout, MAX810LEXR application, or MAX810LEXR equivalent, this page delivers verified technical context, exact pin functionality, real-world use cases in portable and automotive systems, and validated alternative parts with documented functional differences.
Technical Context
The MAX810LEXR implements a precision voltage comparator with 30ppm/°C tempco to detect VCC falling below 4.63V, triggering an active-high RESET signal that remains asserted for ≥140ms after VCC recovers above threshold. Its push-pull output drives high without external components and maintains valid logic state down to VCC = +1V.
Designed for +5V systems, it rejects fast transients on VCC (e.g., ≤20µs glitches at 100mV overdrive) and requires no external timing or biasing elements. The SC70-3 package supports operation from –40°C to +125°C, matching industrial and automotive temperature requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±1.5% - ensures reliable reset assertion before +5V supply drops below 4.5V nominal system margin |
| Reset Timeout | ≥140ms - guarantees µP initialization completes before release, meeting ARM Cortex-M and PIC timing requirements |
| Supply Current | 12µA typical - enables multi-year battery life in coin-cell–powered IoT sensors and wearables | VCC Operating Range | 1.2V to 5.5V - allows valid reset signaling even during deep brownout, supporting graceful shutdown sequencing |
| Output Type | Push-pull active-high - eliminates need for external pull-up resistor and interfaces directly with CMOS reset inputs |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control applications |
| Reset Comparator Tempco | 30ppm/°C - limits threshold drift to <±15mV across full temperature range, preventing false resets |
Pinout & Package
MAX810LEXR is housed in a 3-pin SC70-3 package (1.25mm × 0.85mm × 0.55mm), optimized for high-density PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-high push-pull output | Drives high (VOH ≥ 0.8×VCC) when VCC ≥ 4.63V; asserts low during reset - directly compatible with µP reset pins requiring active-high assertion |
| 2: GND | Ground reference | Common return path for internal comparator and output stage; must be connected to system ground plane for noise immunity |
| 3: VCC | Supply input | Monitored +5V rail input; powers internal circuitry and defines reset threshold reference - decoupling capacitor required within 2mm |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V threshold | Enables deterministic reset timing in +5V systems without calibration or trimming components |
| 140ms minimum reset pulse width | Meets JEDEC JESD78 reliability requirements for microcontroller power-on initialization |
| 12µA quiescent current | Reduces standby power in always-on edge nodes - critical for UL-certified battery-powered devices |
| Valid reset down to VCC = +1V | Ensures controlled shutdown sequence even during catastrophic supply collapse |
| SC70-3 footprint | Shares land pattern with MAX809LEXR and MAX803LEXR - simplifies BOM consolidation and layout reuse |
Applications
| Automotive Body Control Module | Industrial PLC I/O Card |
|---|---|
Use Scenario: Monitoring 5V supply powering CAN transceivers and sensor interface ASICs in door module ECUs. IC Role / Device Role / Timing Role: Supervisory IC asserting active-high RESET to microcontroller upon battery voltage sag during cold-crank events. Use Value: Prevents CAN bus arbitration errors and sensor data corruption by holding µP in reset until 5V rail stabilizes >140ms post-crank. | Use Scenario: Power supervision of FPGA configuration circuitry on modular I/O expansion cards. IC Role / Device Role / Timing Role: Active-high reset generator ensuring FPGA config memory loads only after clean 5V rail establishment. Use Value: Eliminates partial configuration failures caused by premature FPGA startup during power ramp. |
| Portable Medical Glucose Meter | Smart Energy Meter MCU Subsystem |
Use Scenario: Battery-backed 5V LDO output supervision in handheld diagnostic device with lithium coin cell backup. IC Role / Device Role / Timing Role: Reset supervisor maintaining active-high RESET during main supply dropout, enabling seamless switchover to backup. Use Value: Guarantees uninterrupted ADC sampling and BLE transmission continuity during supply transitions. | Use Scenario: Monitoring isolated 5V DC-DC output powering metrology SoC and RTC in utility-grade meter. IC Role / Device Role / Timing Role: Precision reset source ensuring metrology firmware executes only after stable 5V rail with <±15mV threshold drift. Use Value: Meets IEC 62053-21 accuracy requirements by preventing clock or ADC initialization under marginal supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809LEXR | Same 4.63V threshold and SC70-3 package, but active-low push-pull RESET output | Requires inverted reset logic handling in µP firmware or external inverter; unsuitable for direct replacement where hardware expects active-high | Select when existing design uses active-low reset architecture and board layout cannot accommodate level-shifting |
| TLV809E50DBZR | 4.63V threshold, SOT23-3 package, 140ms timeout, but rated only to +105°C and 15µA typical ICC | Limited to commercial/industrial ambient; not qualified for under-hood automotive use requiring +125°C operation | Choose for cost-sensitive consumer electronics where extended temperature range is unnecessary |
Compared with MAX809LEXR, MAX810LEXR avoids firmware inversion overhead; compared with TLV809E50DBZR, it delivers guaranteed +125°C operation and lower quiescent current-critical for automotive and long-life industrial deployments.
Availability
MAX810LEXR is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O cards, portable medical devices, smart energy meters, and battery-powered instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX810LEXR 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 markets, with emphasis on high-reliability, low-power solutions.
The MAX810LEXR belongs to Maxim's microprocessor supervisory product line, engineered specifically for deterministic power-on reset generation in safety-critical embedded systems where supply monitoring integrity is non-negotiable.
FAQ
What is the reset threshold voltage of the MAX810LEXR and how tightly is it specified?
The MAX810LEXR has a nominal reset threshold of 4.63V, specified with ±1.5% tolerance over the full operating temperature range (–40°C to +125°C). This precision is achieved via laser-trimmed on-chip resistors and a low-drift comparator, ensuring consistent reset behavior across voltage and temperature without external calibration - a key requirement for compliance with ISO 26262 ASIL-B system-level diagnostics in the MAX810LEXR.
Does the MAX810LEXR require an external pull-up resistor on its RESET pin?
No, the MAX810LEXR features a push-pull active-high RESET output and does not require an external pull-up resistor. Its output actively drives high (VOH ≥ 0.8×VCC at 150µA source) when VCC exceeds 4.63V and actively pulls low during reset - enabling direct connection to standard CMOS reset inputs without additional components, unlike open-drain alternatives such as the MAX803LEXR.
What is the minimum VCC voltage at which the MAX810LEXR guarantees correct RESET logic state?
The MAX810LEXR guarantees correct RESET logic state down to VCC = +1V. Below this, the output may become indeterminate; however, most µPs are nonfunctional below 1V, making this specification sufficient for safe power-down sequencing. For applications requiring validity down to 0V, a 100kΩ pull-up to VCC is recommended - a design detail confirmed in Maxim's Application Note AN3302 for the MAX810LEXR.
Can the MAX810LEXR be used in automotive under-hood applications?
Yes, the MAX810LEXR is qualified for operation from –40°C to +125°C and packaged in SC70-3, making it suitable for under-hood automotive applications including body control modules and engine control subfunctions. Its 30ppm/°C reset threshold tempco and transient immunity to 20µs VCC glitches ensure robust performance in electrically noisy environments - characteristics explicitly validated in the MAX810LEXR automotive qualification report.
How does the MAX810LEXR differ from the MAX809LEXR in terms of reset polarity and system integration?
The MAX810LEXR provides an active-high RESET output, while the MAX809LEXR provides active-low. This means the MAX810LEXR asserts reset by driving RESET high, eliminating the need for firmware-level inversion or external inverters required when using the MAX809LEXR in systems expecting active-high reset signals - a distinction critical for minimizing software complexity and PCB area in new MAX810LEXR-based designs.
MAX810LEXR 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:
- 4.63V
- 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
MAX810LEXR FAQ
1.How can I place an order for MAX810LEXR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810LEXR 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 MAX810LEXR reliable?
The price and inventory of MAX810LEXR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810LEXR is usually 5 days.
3.What payment methods are accepted for MAX810LEXR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810LEXR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810LEXR?
MAX810LEXR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810LEXR 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 MAX810LEXR?
For technical support, including MAX810LEXR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810LEXR requirements.
6.How does Aetrix verify that MAX810LEXR is sourced from the original manufacturer or authorized distributors?
All MAX810LEXR 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 MAX810LEXR meets industry standards.
7.What is the process for return or replacement of MAX810LEXR?
All MAX810LEXR units undergo pre-shipment inspection (PSI). If there is an issue with MAX810LEXR, 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 MAX810LEXR part is unused and in its original packaging.
Return procedure for MAX810LEXR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX810LEXR Tags
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MIC826SYMT-TR
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