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Analog Devices Inc./Maxim Integrated MAX810LEXR+
- Part No.:
- MAX810LEXR+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX810LEXR+.pdf
- Description:
- IC RESET CIRC MPU SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,079
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Product details
Overview
MAX810LEXR+ from Maxim Integrated is a 3-pin SC70-packaged microprocessor supervisory circuit with push-pull active-high RESET output, precision 4.63V reset threshold (±1.5% over −40°C to +125°C), 140ms minimum reset timeout, 12μA supply current, and guaranteed operation down to VCC = 1V - used to ensure reliable power-on initialization in automotive and industrial μP systems.
For engineers reviewing the MAX810LEXR+ datasheet, MAX810LEXR+ pinout, MAX810LEXR+ application, or MAX810LEXR+ equivalent, this page delivers verified electrical parameters, thermal performance across −40°C to +125°C, SC70 package footprint details, and real-world reset timing behavior under brownout and transient conditions.
Technical Context
The MAX810LEXR+ implements a precision bandgap-based voltage comparator monitoring VCC against a factory-trimmed 4.63V threshold, with built-in hysteresis and transient immunity up to 100mV/20μs. Its push-pull active-high RESET output drives logic-high during fault conditions and transitions low only after VCC stabilizes above threshold for ≥140ms.
Designed for AEC-Q100 qualified automotive applications, it operates over full −40°C to +125°C range with reset threshold tempco of 30ppm/°C and maintains valid output state down to VCC = 1V - enabling robust reset assertion during deep brownouts without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±1.5% (guaranteed over −40°C to +125°C; ensures reset asserts before 5V supply drops below 4.5V) |
| Reset Timeout | 140ms min (ensures μP remains held in reset long enough for stable clock and power rail settling) |
| Supply Current | 12μA typical at +25°C (enables use in always-on battery-backed systems without significant drain) |
| VCC Operating Range | 1.2V to 5.5V (supports operation during deep brownout while maintaining valid RESET output) |
| Output Type | Push-pull active-high (drives high during fault; no external pullup required; compatible with CMOS inputs) |
| Tempco | 30ppm/°C (minimizes threshold drift across temperature; critical for automotive under-hood reliability) |
| Transient Immunity | Immune to 100mV/20μs VCC glitches (prevents spurious resets from noise or switching transients) |
Pinout & Package
MAX810LEXR+ uses a 3-pin SC70 package (pin-compatible with SOT23 but smaller footprint: 2.0mm × 2.1mm × 0.95mm). The device has no exposed pad and is RoHS-compliant (+ suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal comparator and output stage; must be connected to system ground plane for noise immunity |
| 2 RESET | Active-high push-pull output | Drives high during VCC fault or brownout; pulls low only after VCC > 4.63V for ≥140ms; sinks/source capability defined per datasheet |
| 3 VCC | Supply input | Monitored +5V rail; powers internal circuitry; absolute max rating is +6.0V; requires local 0.1μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications (−40°C to +125°C); qualified per stress test requirements for Grade 2 |
| No external components | Integrates precision reference, comparator, timer, and output driver - eliminates discrete R/C network and calibration |
| Valid RESET to VCC = 1V | Ensures deterministic reset state even during severe brownout; avoids floating or undefined logic levels at μP reset pin |
| SC70 package | 2.0mm × 2.1mm footprint saves PCB area vs. SOT23; supports high-density automotive control modules |
| Reset threshold accuracy | ±1.5% over full temperature range - tighter than standard ±2.5%, reducing design margin uncertainty |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
|---|---|
Use Scenario: Monitors 5V supply powering MCU and CAN transceiver in engine bay under wide temperature and load dump conditions. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting RESET during cold cranking (VCC dip to 3.2V) and hot restart (transient immunity prevents false trigger). Use Value: Guarantees ECU boots only after stable 5V rail is confirmed, eliminating firmware corruption from premature execution. | Use Scenario: Ensures clean boot of image signal processor (ISP) in rear-view camera exposed to −40°C startup and 105°C ambient. IC Role / Device Role / Timing Role: Provides 140ms power-on reset pulse synchronized to 5V rail stabilization; operates reliably at +125°C junction temperature. Use Value: Prevents ISP lockup or corrupted frame buffer initialization caused by marginal VCC during thermal cycling. |
| Industrial PLC I/O Module | Automotive Body Control Module (BCM) |
Use Scenario: Supervises isolated 5V DC-DC output powering ARM Cortex-M7 core and analog front-end in factory automation controller. IC Role / Device Role / Timing Role: Push-pull active-high RESET directly interfaces with MCU's dedicated reset pin; no pullup resistor needed. Use Value: Reduces BOM count and layout complexity while ensuring deterministic reset timing across 0–100% load step response. | Use Scenario: Resets microcontroller managing door locks, lighting, and LIN bus communication during vehicle wake-up from sleep mode. IC Role / Device Role / Timing Role: Maintains valid RESET output down to VCC = 1V, preventing glitch-induced reset during battery recovery after deep discharge. Use Value: Eliminates unintended module reboots during 12V battery sag (e.g., starter motor engagement), improving system robustness. |
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 package, but active-low push-pull RESET output | Requires inverted reset logic on host MCU; incompatible with active-high-only reset pins | Select when target μP accepts active-low reset and board layout already accommodates pullup-free interface |
| TLV809KDBZR | 4.63V threshold, SOT23-3, active-high, but rated only to +105°C and not AEC-Q100 qualified | Limited to commercial/industrial environments; unsuitable for under-hood automotive use | Choose for cost-sensitive non-automotive designs where extended temperature range is not required |
Compared with MAX809LEXR+, the MAX810LEXR+ provides native active-high reset compatibility without inversion logic, while TLV809KDBZR offers footprint compatibility but lacks automotive qualification and extended temperature support - making MAX810LEXR+ the only drop-in solution for AEC-Q100-compliant 5V μP supervision.
Availability
MAX810LEXR+ is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term availability and traceable sourcing.
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 automotive, industrial, and communications applications.
The MAX810LEXR+ belongs to the MAX803/MAX809/MAX810 family of microprocessor supervisory circuits, engineered specifically for reliable power-monitoring in safety-critical automotive and high-reliability embedded systems.
FAQ
What is the reset threshold voltage of the MAX810LEXR+ and how stable is it over temperature?
The MAX810LEXR+ has a factory-trimmed reset threshold of 4.63V with ±1.5% tolerance over −40°C to +125°C. Its temperature coefficient is 30ppm/°C, meaning threshold drift is limited to ±0.014V across the full range - ensuring consistent brownout detection in automotive under-hood environments where thermal stability is critical. This specification is guaranteed, not typical.
Does the MAX810LEXR+ require an external pullup resistor on its RESET pin?
No, the MAX810LEXR+ does not require an external pullup resistor because it features a push-pull active-high RESET output. Unlike open-drain variants such as the MAX803, the MAX810LEXR+ actively drives both high and low states, eliminating the need for external biasing and simplifying PCB layout. This is confirmed in the datasheet's Pin Description and Typical Operating Circuit sections.
Is the MAX810LEXR+ qualified for automotive applications?
Yes, the MAX810LEXR+ is AEC-Q100 qualified for automotive use. The "/V+" suffix in its part number denotes compliance with AEC-Q100 Grade 2 standards (−40°C to +105°C ambient or −40°C to +125°C junction), and it is explicitly listed in the Benefits and Features section as AEC-Q100 qualified. This makes it suitable for engine control, body electronics, and ADAS subsystems.
What is the minimum VCC voltage at which the MAX810LEXR+ guarantees valid RESET output?
The MAX810LEXR+ guarantees correct RESET logic state down to VCC = 1.0V. Below this, the output may become indeterminate. This is specified in the Absolute Maximum Ratings and Electrical Characteristics tables, and enables reliable reset assertion during deep brownout events - a key requirement for automotive cold-cranking scenarios where battery voltage can dip below 4V.
Can the MAX810LEXR+ be used with a 3.3V supply instead of 5V?
No, the MAX810LEXR+ is configured for 4.63V reset threshold and is intended for +5V systems. Using it with a 3.3V supply would cause continuous reset assertion since VCC never reaches the 4.63V threshold. For 3.3V supervision, select MAX810TEXR+ (3.08V threshold) or MAX810SEXR+ (2.93V threshold), both available in the same SC70 package and AEC-Q100 qualified.
MAX810LEXR+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
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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APX803L20-29SA-7
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