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Analog Devices Inc./Maxim Integrated MAX8211MSA/PR
- Part No.:
- MAX8211MSA/PR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX8211MSA/PR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,493
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Product details
Overview
The MAX8211MSA/PR from Analog Devices is a CMOS micropower voltage detector designed for microprocessor power-fail warning and programmable undervoltage/overvoltage monitoring. It features a 1.15V bandgap reference, ±40mV threshold accuracy (±3.5%), 5µA quiescent current, 7mA current-limited open-drain output sink, and operates across a 2.0V to 16.5V supply range. It is used in battery-backup switching and power-supply fault monitoring in harsh-environment industrial systems.
For engineers reviewing the MAX8211MSA/PR datasheet, MAX8211MSA/PR pinout, MAX8211MSA/PR application, or MAX8211MSA/PR equivalent, this page delivers verified electrical parameters, temperature-rated SO package details, hysteresis implementation guidance, and validated alternatives for -55°C to +125°C operation.
Technical Context
The MAX8211MSA/PR implements a precision comparator with an internal 1.15V bandgap reference and low-leakage MOSFET threshold input (ITH ≤ 10nA typ). Its output stage is an open-drain n-channel transistor that activates when THRESH voltage falls below the reference - enabling undervoltage detection with 7mA current limiting.
Hysteresis is implemented via a dedicated open-drain p-channel HYST output, allowing user-defined positive feedback through external resistor R3. The device achieves ±0.1mV threshold disparity between OUT and HYST switching points, eliminating chatter in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports wide-input industrial and automotive power rails without external regulation |
| Threshold Accuracy | ±40mV (±3.5%) at +25°C - enables reliable trip-point setting without calibration or trimming |
| Quiescent Current | 5µA max - extends battery life in always-on monitoring applications |
| Output Sink Current | 7mA typical, current-limited - drives LEDs or logic inputs directly without series resistors |
| Operating Temperature | -55°C to +125°C - qualified for extended-temperature military, aerospace, and downhole systems |
| Threshold Tempco | -200ppm/°C - ensures stable trip voltage over full temperature range |
| THRESH Input Leakage | ≤10nA - permits use of high-value resistor dividers (>10MΩ), minimizing system current drain |
Pinout & Package
MAX8211MSA/PR is housed in an 8-pin SO (Small Outline) package (S8-2), RoHS-compliant, with exposed pad not electrically connected. Pin 1 = THRESH, Pin 2 = HYST, Pin 3 = N.C., Pin 4 = V+, Pin 5 = GND, Pin 6 = N.C., Pin 7 = N.C., Pin 8 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| THRESH (Pin 1) | Comparator input | Accepts scaled-down supply voltage; triggers output when <1.15V - defines undervoltage trip point |
| HYST (Pin 2) | Hysteresis output | Open-drain p-channel output providing positive feedback; enables noise-immune switching with user-set dead-band |
| V+ (Pin 4) | Power supply | Primary supply rail input; powers internal reference and comparator - rated up to 16.5V continuous |
| GND (Pin 5) | Ground reference | Analog and digital ground return; must be low-impedance to maintain threshold accuracy |
| OUT (Pin 8) | Main output | Open-drain n-channel output sinking up to 7mA; asserts low during undervoltage condition |
Key Features
| Feature | Design Value |
|---|---|
| Current-limited output sink | 7mA typical - eliminates need for external current-limiting resistors when driving LEDs or optocouplers |
| On-board hysteresis output | Dedicated HYST pin with ±0.1mV matching to THRESH - enables precise, chatter-free threshold recovery |
| Low input leakage | ≤10nA at THRESH - allows >10MΩ divider networks, reducing standby current by >90% vs. bipolar predecessors |
| Extended temperature grade | -55°C to +125°C operation - meets MIL-STD-883 processing requirements for high-reliability programs |
| Tight threshold tolerance | ±40mV (±3.5%) - reduces design margin overhead and eliminates potentiometer tuning in production |
Applications
| Industrial Power-Supply Monitoring | Aerospace Battery Backup Control |
|---|---|
Use Scenario: Continuous monitoring of 12V DC bus in PLC power modules to detect brownout conditions before processor reset. IC Role / Device Role / Timing Role: Undervoltage detector asserting NMI signal to microcontroller when bus drops below 10.5V. Use Value: Prevents corrupted memory writes and firmware lockups using only 5µA quiescent current and no external components beyond R1/R2. | Use Scenario: Switching between main aircraft 28V supply and backup Li-ion battery during engine start transients. IC Role / Device Role / Timing Role: Threshold comparator triggering MOSFET gate driver to engage backup path when main supply dips below 22V. Use Value: Achieves <40µs turn-on delay and ±40mV trip repeatability across -55°C to +125°C, critical for flight-critical redundancy. |
| Downhole Oilfield Sensor Node | Railway Signaling Power Supervision |
Use Scenario: Monitoring 3.3V logic supply in high-temperature sensor transmitters deployed at 150°C wellbore environments. IC Role / Device Role / Timing Role: Low-voltage detector disabling RF transmission when supply falls below 2.9V to preserve battery charge. Use Value: Operates reliably at +125°C with -200ppm/°C tempco - maintains trip point within ±60mV over full range without recalibration. | Use Scenario: Supervising redundant 24V DC power feeds to track-side signaling controllers in outdoor cabinets subject to lightning-induced surges. IC Role / Device Role / Timing Role: Dual-threshold monitor detecting both overvoltage (>30V) and undervoltage (<18V) faults on primary feed. Use Value: Uses single MAX8211MSA/PR with R3-based hysteresis to eliminate false trips from EMI, meeting EN 50121-3-2 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8211ESA | Same core functionality but rated for -40°C to +85°C; 8-pin SO package; no MIL-STD-883 option | Suitable for commercial/industrial environments only - not qualified for extended-temperature or high-reliability programs | Select MAX8211ESA only if operating temperature stays above -40°C and lifecycle assurance is not required. |
| TLV803EB26DBVR | Fixed 2.63V threshold; no programmable hysteresis; 350nA quiescent current; SOT-23-3 package | Single-threshold, ultra-low-power solution - lacks THRESH/HYST flexibility and current-sink drive capability | Choose TLV803EB26DBVR only for cost-sensitive, fixed-threshold designs where 7mA drive and hysteresis control are unnecessary. |
Compared with MAX8211ESA and TLV803EB26DBVR, the MAX8211MSA/PR uniquely combines extended-temperature operation (-55°C to +125°C), programmable trip voltage via resistor dividers, integrated hysteresis control, and 7mA output drive - making it the sole option for ruggedized, field-programmable voltage supervision.
Availability
MAX8211MSA/PR is available at Aetrix Electronics and suitable for industrial power-supply monitoring, aerospace battery backup control, downhole oilfield sensor nodes, and railway signaling power supervision requiring stable component supply across extreme temperature ranges.
Supply support for MAX8211MSA/PR 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and defense markets.
The MAX8211 product line delivers precision, low-power voltage supervisors optimized for microprocessor reset and power-fail warning in mission-critical systems operating under extreme thermal and electrical stress.
FAQ
What is the maximum supply voltage rating for the MAX8211MSA/PR?
The MAX8211MSA/PR has an absolute maximum supply voltage rating of +18V, but its guaranteed operating range is 2.0V to 16.5V. Operation above 16.5V may cause functional failure or permanent damage. This limit applies regardless of temperature or load condition, and must be respected in all designs using the MAX8211MSA/PR.
Does the MAX8211MSA/PR support overvoltage detection?
No - the MAX8211MSA/PR is configured for undervoltage detection only: its output activates when the THRESH pin voltage falls below the 1.15V internal reference. For overvoltage detection, the MAX8212 variant must be used, as it triggers when THRESH exceeds 1.15V. The MAX8211MSA/PR cannot be reconfigured for overvoltage mode.
How is hysteresis implemented on the MAX8211MSA/PR?
Hysteresis on the MAX8211MSA/PR is implemented using the dedicated HYST pin (Pin 2), an open-drain p-channel output. When OUT goes low, HYST pulls up the THRESH node via external resistor R3, raising the effective trip threshold and preventing oscillation due to noise. The magnitude is set by R3 value and is independent of the main resistor divider.
What is the output drive capability of the MAX8211MSA/PR?
The MAX8211MSA/PR provides a current-limited open-drain n-channel output (Pin 8) with a typical sink current of 7mA and hard current limit of 30mA. This allows direct LED or logic-level interface without external current-limiting resistors. Output saturation voltage is ≤0.4V at 2mA, ensuring clean TTL/CMOS compatibility.
Is the MAX8211MSA/PR pin-compatible with the ICL8211?
Yes - the MAX8211MSA/PR is a plug-in replacement for the bipolar ICL8211 in applications with supply voltages below 16.5V. It shares identical 8-pin SO pinout, same THRESH/HYST/OUT/V+/GND assignments, and compatible timing behavior. However, its CMOS architecture delivers lower quiescent current, tighter reference tolerance, and higher hysteresis output current than the ICL8211.
MAX8211MSA/PR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- <1ms Minimum
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX8211MSA/PR FAQ
1.How can I place an order for MAX8211MSA/PR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8211MSA/PR 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 MAX8211MSA/PR reliable?
The price and inventory of MAX8211MSA/PR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8211MSA/PR is usually 5 days.
3.What payment methods are accepted for MAX8211MSA/PR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8211MSA/PR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8211MSA/PR?
MAX8211MSA/PR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8211MSA/PR 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 MAX8211MSA/PR?
For technical support, including MAX8211MSA/PR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8211MSA/PR requirements.
6.How does Aetrix verify that MAX8211MSA/PR is sourced from the original manufacturer or authorized distributors?
All MAX8211MSA/PR 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 MAX8211MSA/PR meets industry standards.
7.What is the process for return or replacement of MAX8211MSA/PR?
All MAX8211MSA/PR units undergo pre-shipment inspection (PSI). If there is an issue with MAX8211MSA/PR, 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 MAX8211MSA/PR part is unused and in its original packaging.
Return procedure for MAX8211MSA/PR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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