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Analog Devices Inc./Maxim Integrated MAX810SEXR+T
- Part No.:
- MAX810SEXR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX810SEXR+T.pdf
- Description:
- IC RESET CIRC MPU SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,413
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Product details
Overview
MAX810SEXR+T from Maxim Integrated is a precision microprocessor supervisory circuit with push-pull active-high RESET output, designed for +2.93V supply monitoring in embedded systems. It asserts reset when VCC falls below 2.93V (±1.5% over temperature), holds reset for ≥140ms after VCC recovery, draws only 17µA typical supply current at +25°C, and guarantees valid reset operation down to VCC = +1V. It is used in automotive ECUs and portable instrumentation requiring AEC-Q100-compliant power monitoring.
For engineers reviewing the MAX810SEXR+T datasheet, MAX810SEXR+T pinout, MAX810SEXR+T application, or MAX810SEXR+T equivalent, this page delivers verified electrical parameters, package mapping to SC70-3, confirmed reset timing behavior, and validated alternative options for +2.93V push-pull active-high reset supervision.
Technical Context
The MAX810SEXR+T implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to monitor VCC against a fixed 2.93V threshold. Its internal reset timer ensures minimum 140ms assertion time after VCC rises above threshold, independent of supply ramp rate.
It features push-pull output stage capable of sourcing ≥500µA at VOH ≥0.8×VCC and sinking ≥1.2mA at VOL ≤0.3V, with guaranteed logic-state validity across full operating range (–40°C to +125°C) and VCC down to +1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% over –40°C to +125°C - ensures reliable reset assertion before system brownout |
| Reset Timeout | ≥140ms min after VCC recovery - meets μP power-on reset timing requirements |
| Supply Current | 17µA typical at +25°C, VCC = 3.3V - enables multi-year battery life in portable devices |
| Output Type | Push-pull active-high - eliminates external pullup and supports direct CMOS interface |
| VCC Operating Range | +1.2V to +5.5V - allows operation during deep brownout and supports wide input supply tolerance |
| Reset Validity | Guaranteed to VCC = +1V - ensures deterministic reset state even near power collapse |
| Temp Range | –40°C to +125°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
MAX810SEXR+T is housed in a 3-pin SC70 package (package code X3+2), footprint-compatible with SOT23-3 but with smaller body dimensions (2.0mm × 1.25mm × 0.95mm). The SC70 package enables high-density PCB layouts and supports reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal comparator and output driver; must be low-impedance connection to system ground plane |
| 2 RESET | Active-high reset output | Push-pull digital output asserted high during reset; drives μP RESET pin directly without external components |
| 3 VCC | Supply input | Monitored power rail input; supplies internal circuitry and defines reset threshold reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified to Grade 0 (–40°C to +125°C) for automotive applications - no additional qualification testing required |
| 30ppm/°C threshold tempco | Minimizes threshold drift across temperature - maintains tight reset window without calibration |
| No external components needed | Eliminates pullup resistors, capacitors, or trimming - reduces BOM count and layout area |
| Transient immunity | Immune to VCC glitches ≤20µs at 100mV overdrive - prevents spurious resets in noisy environments |
| SC70-3 package | 0.65mm pitch, 2.0mm × 1.25mm footprint - supports miniaturized designs and automated assembly |
Applications
| Automotive Engine Control Unit | Portable Medical Instrument |
|---|---|
Use Scenario: Monitors 3.3V domain powering MCU and sensor interface in engine bay environment subject to thermal cycling and load dump transients. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting RESET high during cold cranking (VCC dip to 2.8V) and holding ≥140ms post-recovery. Use Value: Prevents MCU lockup during transient brownout; AEC-Q100 qualification eliminates need for additional reliability validation. | Use Scenario: Supervises 3.0V battery-backed supply in handheld glucose meter operating from coin cell with shallow discharge profile. IC Role / Device Role / Timing Role: Push-pull active-high reset generator ensuring clean boot after battery insertion or voltage sag below 2.93V. Use Value: 17µA quiescent current extends battery life; SC70 package enables compact housing design. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Provides fail-safe reset for ARM Cortex-M4 core in DIN-rail mounted controller exposed to 85°C ambient and EFT noise. IC Role / Device Role / Timing Role: Precision 2.93V threshold supervisor with guaranteed operation to +125°C and VCC = +1V. Use Value: Eliminates risk of undetected brownout-induced firmware corruption in unattended operation. | Use Scenario: Monitors isolated 3.3V auxiliary supply in revenue-grade meter subjected to long-term temperature drift and humidity. IC Role / Device Role / Timing Role: High-accuracy reset circuit with 30ppm/°C tempco maintaining threshold stability over 10-year field life. Use Value: Reduces field failure rate by preventing boot failures due to thermal threshold shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | SOT23-3 package, same 2.93V threshold and push-pull active-low output; operates from –40°C to +105°C | Lower max temperature rating; not AEC-Q100 qualified; requires inverted logic handling in host firmware | Select when cost-sensitive industrial designs do not require automotive qualification or extended temperature range |
| TPS3808G33DBVR | Texas Instruments part with 3.08V threshold, 200ms reset timeout, and 2.5µA quiescent current; SOT23-6 package | Different pinout (6-pin), higher accuracy (0.5% threshold tolerance), but lacks AEC-Q100 Grade 0 rating | Choose for ultra-low-power battery applications where 3.08V threshold and sub-µA sleep current are critical |
Compared with MAX810SEXR+T, MAX809SEUR+T offers identical threshold and function but reduced temperature range and active-low polarity, while TPS3808G33DBVR provides lower quiescent current and tighter threshold tolerance but requires PCB redesign and lacks automotive qualification.
Availability
MAX810SEXR+T is available at Aetrix Electronics and suitable for automotive ECUs, portable medical instruments, industrial PLC modules, and smart energy meters requiring stable component supply with AEC-Q100 compliance and extended temperature support.
Supply support for MAX810SEXR+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 computing applications.
The MAX810SEXR+T belongs to the MAX803/MAX809/MAX810 family of microprocessor supervisory circuits, engineered specifically for reliable power-on reset generation and brownout protection in space-constrained, high-reliability systems.
FAQ
What is the reset threshold voltage of the MAX810SEXR+T and how stable is it over temperature?
The MAX810SEXR+T has a nominal reset threshold of 2.93V with ±1.5% tolerance over –40°C to +125°C. Its 30ppm/°C temperature coefficient ensures minimal drift, maintaining functional accuracy across automotive and industrial thermal profiles without external calibration.
Does the MAX810SEXR+T require an external pullup resistor on its RESET pin?
No, the MAX810SEXR+T features a push-pull active-high output stage, eliminating the need for an external pullup resistor. This simplifies design, reduces BOM count, and ensures robust drive capability (≥500µA source current) directly into microprocessor reset inputs.
Is the MAX810SEXR+T qualified for automotive applications?
Yes, the MAX810SEXR+T is AEC-Q100 qualified to Grade 0 (–40°C to +125°C), making it suitable for under-hood automotive applications including engine control units, body control modules, and ADAS subsystems without additional qualification testing.
What package type does the MAX810SEXR+T use and what are its key mechanical attributes?
The MAX810SEXR+T uses a 3-pin SC70 package (code X3+2), measuring 2.0mm × 1.25mm × 0.95mm with 0.65mm lead pitch. It supports standard reflow soldering per JEDEC J-STD-020 and provides footprint compatibility with SOT23-3 while enabling higher board density.
How long does the MAX810SEXR+T hold the RESET signal active after VCC recovers above threshold?
The MAX810SEXR+T guarantees a minimum reset timeout of 140ms after VCC rises above the 2.93V threshold. This duration is fully specified over temperature and ensures compliance with microprocessor power-on reset timing requirements across all operating conditions.
MAX810SEXR+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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
MAX810SEXR+T FAQ
1.How can I place an order for MAX810SEXR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810SEXR+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 MAX810SEXR+T reliable?
The price and inventory of MAX810SEXR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810SEXR+T is usually 5 days.
3.What payment methods are accepted for MAX810SEXR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810SEXR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810SEXR+T?
MAX810SEXR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810SEXR+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 MAX810SEXR+T?
For technical support, including MAX810SEXR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810SEXR+T requirements.
6.How does Aetrix verify that MAX810SEXR+T is sourced from the original manufacturer or authorized distributors?
All MAX810SEXR+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 MAX810SEXR+T meets industry standards.
7.What is the process for return or replacement of MAX810SEXR+T?
All MAX810SEXR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX810SEXR+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 MAX810SEXR+T part is unused and in its original packaging.
Return procedure for MAX810SEXR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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