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Analog Devices Inc./Maxim Integrated MAX810ZEXR-T
- Part No.:
- MAX810ZEXR-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX810ZEXR-T.pdf
- Description:
- IC SUPERVISOR 3PIN MPU RESET
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MAX810ZEXR-T from Maxim Integrated is a precision microprocessor supervisory circuit with active-high push-pull RESET output, designed for +2.5V supply monitoring in embedded systems. It asserts reset when VCC falls below 2.32V (typ), holds reset for ≥140ms after VCC recovers, operates down to VCC = 1V, draws only 17µA (typ) at +25°C, and is qualified for automotive-grade temperature range (–40°C to +125°C) in SC70-3 package.
For engineers reviewing the MAX810ZEXR-T datasheet, MAX810ZEXR-T pinout, MAX810ZEXR-T application, or MAX810ZEXR-T equivalent, this page delivers verified functional identity, exact reset threshold and timing behavior, SC70-3 package mapping, true push-pull active-high output logic, and validated alternatives for 2.5V system power monitoring.
Technical Context
The MAX810ZEXR-T implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to monitor VCC against a fixed 2.32V (typ) threshold. Its internal timer guarantees minimum 140ms reset pulse width after VCC rises above threshold, independent of supply ramp rate.
It features push-pull output stage capable of sourcing ≥150µA at 0.8×VCC while VCC > VTH(max), sinking ≤0.4V at 3.2mA load, and remains functional with VCC as low as 1.0V - ensuring deterministic reset assertion during brownout and power-down sequences in battery-backed or automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (typ) at +25°C; 2.22V to 2.42V over –40°C to +125°C - enables reliable detection of 2.5V supply droop beyond 7% tolerance. |
| Reset Pulse Width | ≥140ms (min) after VCC recovery - ensures μP completes full initialization before release from reset. |
| Supply Current | 17µA (typ) at +25°C, VCC = 2.5V - supports multi-year operation in coin-cell-powered IoT sensors. |
| Operating Voltage Range | 1.2V to 5.5V - allows use with 2.5V, 3.0V, 3.3V, or 5V rails without external scaling. |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and interfaces directly with CMOS reset inputs. |
| Temperature Range | –40°C to +125°C - certified for under-hood automotive and industrial control applications. |
| Reset Validity | Guaranteed down to VCC = 1.0V - prevents metastability in μP reset input during deep brownout. |
Pinout & Package
MAX810ZEXR-T is housed in a 3-pin SC70 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads and RoHS-compliant matte-tin plating. Pin 1 is RESET, Pin 2 is GND, Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull output | Drives high (≥0.8×VCC) when VCC ≥ threshold; drives low (≤0.4V) when VCC < threshold - directly compatible with standard μP reset inputs requiring active-high assertion. |
| 2 - GND | Ground reference | Return path for internal comparator and output stage; must be connected to system ground plane with low-inductance trace to ensure noise immunity. |
| 3 - VCC | Supply input | Monitored power rail input; accepts 1.2V–5.5V; internal circuitry remains functional down to 1.0V for fail-safe reset hold. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.32V threshold | Enables accurate detection of 2.5V supply collapse at 7.2% deviation - tighter than typical ±5% supervisors. |
| 140ms min reset timeout | Ensures μP reset duration exceeds boot ROM execution time, eliminating race conditions during cold start. |
| 17µA supply current | Reduces quiescent power in always-on monitoring circuits - critical for energy-harvesting and battery-backed nodes. |
| VCC = 1.0V reset validity | Maintains defined logic state on RESET pin even during severe brownout, preventing undefined μP behavior. |
| SC70-3 automotive package | Supports AEC-Q200-relevant thermal cycling and vibration performance in compact PCB layouts. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Subsystem |
|---|---|
Use Scenario: Monitoring 2.5V auxiliary supply powering CAN transceiver and EEPROM in vehicle door module. IC Role / Device Role / Timing Role: Supervisory IC asserting active-high RESET to microcontroller upon 2.5V rail sag below 2.32V during load dump or battery dip. Use Value: Prevents firmware corruption by holding MCU in reset until 2.5V stabilizes for ≥140ms - meeting ISO 16750-2 transient immunity requirements. | Use Scenario: Power supervision for 2.5V FPGA configuration memory and real-time clock in modular PLC base unit. IC Role / Device Role / Timing Role: Active-high reset generator ensuring FPGA reconfiguration only after stable 2.5V rail is confirmed post-power-up. Use Value: Eliminates need for external RC timing network; 17µA quiescent current extends backup battery life during mains outage. |
| Medical Wearable Sensor Hub | Smart Meter Real-Time Clock |
Use Scenario: Reset supervision for ultra-low-power ARM Cortex-M0+ core powered by regulated 2.5V from coin cell in ECG patch. IC Role / Device Role / Timing Role: Precision voltage monitor asserting active-high RESET during battery voltage decay below 2.32V. Use Value: Guarantees clean shutdown before brownout-induced data loss; SC70-3 footprint minimizes board area in space-constrained wearable design. | Use Scenario: Ensuring RTC integrity during 2.5V backup supply transitions in electricity meter with dual-supply architecture. IC Role / Device Role / Timing Role: Fail-safe supervisor maintaining active-high RESET until 2.5V backup rail reaches valid level post-main-power failure. Use Value: Resets RTC controller before writing corrupted time/date; 30ppm/°C tempco preserves threshold accuracy across –25°C to +70°C meter operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809ZEXR-T | Identical SC70-3 package, same 2.32V threshold, but active-low push-pull RESET output. | Requires inverted reset logic on host MCU; not drop-in compatible with active-high designs. | Select only if target μP accepts active-low reset and layout accommodates signal inversion. |
| TPS3808G12DBVR | 2.5V threshold (±0.5%), 200ms reset timeout, 1.2µA IQ, SOT23-3 package - lower current but wider threshold tolerance and different timing. | Not qualified to +125°C; requires external capacitor for timeout adjustment; lacks guaranteed 1V operation. | Prefer for ultra-low-power portable designs where extended temperature range is not required. |
Compared with MAX810ZEXR-T, MAX809ZEXR-T provides identical voltage monitoring but demands active-low reset handling, while TPS3808G12DBVR trades automotive temperature capability and sub-1V reset validity for significantly lower quiescent current - making MAX810ZEXR-T the sole choice for robust 2.5V supervision in harsh-environment embedded systems.
Availability
MAX810ZEXR-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, medical wearables, smart metering, and battery-powered sensor hubs requiring stable component supply across extended temperature ranges.
Supply support for MAX810ZEXR-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 precision voltage monitoring and deterministic reset generation in safety-critical embedded systems operating across wide temperature extremes.
FAQ
What is the exact reset threshold voltage of the MAX810ZEXR-T and how does it vary with temperature?
The MAX810ZEXR-T has a nominal reset threshold of 2.32V at +25°C, specified from 2.22V to 2.42V over the full –40°C to +125°C operating range. Its temperature coefficient is 30ppm/°C, meaning threshold drift is tightly controlled - for example, at –40°C it is typically 2.25V and at +125°C it is typically 2.38V. This precision ensures consistent 2.5V supply monitoring without false resets or missed brownouts, and the value is guaranteed by design across temperature, not just tested at room temperature.
Does the MAX810ZEXR-T support operation down to 1.0V VCC, and what happens to the RESET output below that?
Yes, the MAX810ZEXR-T guarantees correct RESET output logic state down to VCC = 1.0V. Below 1.0V, the internal circuitry ceases to function reliably, and RESET may become indeterminate. However, since most microcontrollers are non-operational below 1.0V, this boundary aligns with system-level failure modes. The datasheet explicitly confirms RESET remains valid (high when asserted, low when deasserted) throughout the 1.0V–5.5V range - a key differentiator from many competitors that lose reset validity below 1.5V.
What is the minimum reset pulse width of the MAX810ZEXR-T, and is it affected by supply ramp rate?
The MAX810ZEXR-T guarantees a minimum reset pulse width of 140ms after VCC rises above the reset threshold, regardless of VCC ramp rate. This timeout is generated by an internal timer, not an RC network, so it remains stable across fast or slow supply ramps - critical for reliable boot sequencing in systems with varying power supply slew rates. The specification holds over the full –40°C to +125°C temperature range, with typical values up to 240ms at +25°C and maximum 460ms in SC70 package at elevated temperatures.
Can the MAX810ZEXR-T be used with a 3.3V supply, and what is its behavior in that configuration?
Yes, the MAX810ZEXR-T operates with any supply from 1.2V to 5.5V, including 3.3V. When powered from 3.3V, it continues to assert RESET high whenever VCC drops below 2.32V (i.e., a 30% undervoltage condition), and maintains reset for ≥140ms after recovery. Its push-pull output delivers VOH ≥ 0.8×3.3V = 2.64V and VOL ≤ 0.4V under load - fully compatible with 3.3V logic families. No external components or configuration changes are needed for 3.3V use.
Is the MAX810ZEXR-T pin-compatible with other members of the MAX803/MAX809/MAX810 family, and what are the key pinout differences?
Yes, the MAX810ZEXR-T shares identical SC70-3 pinout (RESET–GND–VCC) with all SC70-packaged variants in the MAX803/MAX809/MAX810 family. Pin 1 is always RESET, Pin 2 is GND, Pin 3 is VCC - no re-routing is required when substituting within the SC70 footprint. However, output polarity differs: MAX810ZEXR-T has active-high RESET, whereas MAX803ZEXR-T uses open-drain and MAX809ZEXR-T uses active-low push-pull. Thus, while physically pin-compatible, electrical interface must match the host system's reset logic requirement.
MAX810ZEXR-T 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:
- 2.32V
- 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
MAX810ZEXR-T FAQ
1.How can I place an order for MAX810ZEXR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX810ZEXR-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 MAX810ZEXR-T reliable?
The price and inventory of MAX810ZEXR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX810ZEXR-T is usually 5 days.
3.What payment methods are accepted for MAX810ZEXR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX810ZEXR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX810ZEXR-T?
MAX810ZEXR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX810ZEXR-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 MAX810ZEXR-T?
For technical support, including MAX810ZEXR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX810ZEXR-T requirements.
6.How does Aetrix verify that MAX810ZEXR-T is sourced from the original manufacturer or authorized distributors?
All MAX810ZEXR-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 MAX810ZEXR-T meets industry standards.
7.What is the process for return or replacement of MAX810ZEXR-T?
All MAX810ZEXR-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX810ZEXR-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 MAX810ZEXR-T part is unused and in its original packaging.
Return procedure for MAX810ZEXR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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