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Analog Devices Inc./Maxim Integrated MAX8211MSA/PR-T
- Part No.:
- MAX8211MSA/PR-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX8211MSA/PR-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,674
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Product details
Overview
MAX8211MSA/PR-T from Analog Devices is a CMOS micropower voltage detector IC designed for microprocessor power-fail warning and programmable undervoltage/overvoltage monitoring. It features a 1.15V internal bandgap reference, ±40mV threshold accuracy (±3.5%), 5µA quiescent supply current, 7mA current-limited open-drain output sink, and operates across 2.0V–16.5V supply range. It is used in battery-backup switching and power-supply fault monitoring circuits where precision trip-point control and low-power operation are critical.
For engineers reviewing the MAX8211MSA/PR-T datasheet, MAX8211MSA/PR-T pinout, MAX8211MSA/PR-T application, or MAX8211MSA/PR-T equivalent, key selection considerations include its -55°C to +125°C extended temperature rating, SO-8 package compatibility, current-limited output architecture (distinguishing it from MAX8212 variants), and direct replacement capability for ICL8211 in legacy bipolar designs under ≤16.5V supply conditions.
Technical Context
The MAX8211MSA/PR-T implements a comparator-based detection architecture with an internal 1.15V bandgap reference and open-drain n-channel output stage. Its THRESH pin accepts externally divided input voltage, and output activates when THRESH falls below the reference-enabling precise undervoltage detection. The HYST pin provides an open-drain p-channel hysteresis output for noise-immune feedback.
It delivers 7mA typical output sink current with built-in current limiting, eliminating need for external series resistors when driving LEDs or logic inputs. Threshold accuracy is ±40mV over temperature, and supply current remains stable at 5µA (typ) across 2.0V–16.5V V+, supporting long-life battery-powered systems.
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 Reference | 1.15V ±40mV - enables accurate, resistor-programmable trip points from ~2.2V to >15V |
| Quiescent Current | 5µA (typ) - extends battery life in always-on monitoring applications |
| Output Sink Current | 7mA (typ), current-limited - drives LEDs or logic directly without external current-limiting resistor |
| Operating Temperature | -55°C to +125°C - qualified for military, aerospace, and under-hood automotive use |
| Hysteresis Output | Open-drain p-channel, up to 10mA - enables configurable positive feedback for noise-free switching |
| Threshold Tempco | -200ppm/°C - ensures stable trip point across extreme ambient conditions |
Pinout & Package
MAX8211MSA/PR-T is housed in an 8-pin SO (Small Outline) package per package code S8-2, with gull-wing leads, RoHS-compliant finish, and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - THRESH | Comparator input | Accepts externally divided voltage; output triggers when this pin falls below 1.15V reference |
| 2 - HYST | Hysteresis output | Open-drain p-channel; supplies positive feedback current to THRESH node for noise immunity |
| 3 - N.C. | No connect | Internally unconnected; must be left floating or tied to GND (no functional impact) |
| 4 - V+ | Positive supply | Primary power input; powers internal reference, comparator, and output stages (2.0V–16.5V) |
| 5 - GND | Ground reference | Analog and digital ground return; required for stable reference and output operation |
| 6 - N.C. | No connect | Internally unconnected; must be left floating or tied to GND |
| 7 - N.C. | No connect | Internally unconnected; must be left floating or tied to GND |
| 8 - OUT | Main output | Open-drain n-channel; sinks up to 7mA when THRESH < 1.15V; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Current-limited output | 7mA max sink ensures safe direct drive of LEDs or logic without external current-limiting components |
| Low-leakage THRESH input | ≤10nA input current allows use of high-value resistor dividers (>10MΩ), minimizing system power drain |
| On-board hysteresis output | 10mA-capable HYST pin simplifies implementation of robust noise margin without external op-amps |
| Extended temperature grade | -55°C to +125°C operation meets MIL-STD-883 requirements for harsh-environment deployment |
| Plug-in ICL8211 replacement | Pin-compatible with bipolar ICL8211 in ≤16.5V systems, offering lower IQ, tighter reference, and higher HYST current |
Applications
| Battery-Backup Switching | Power-Supply Fault Monitoring |
|---|---|
|
Use Scenario: Detecting main supply collapse to trigger switchover to backup battery in telecom or industrial controllers. IC Role / Device Role / Timing Role: Voltage monitor asserting reset or enable signal when VMAIN drops below programmable threshold. Use Value: 5µA quiescent current preserves battery charge during standby; ±40mV threshold accuracy prevents false switchover. |
Use Scenario: Monitoring DC output of AC/DC or DC/DC converters in server PSUs or PLC power modules. IC Role / Device Role / Timing Role: Undervoltage lockout (UVLO) supervisor generating fault flag on sustained rail deviation. Use Value: 7mA current-limited OUT drives optocoupler or FPGA GPIO directly; -55°C to +125°C rating ensures reliability in hot chassis environments. |
| Microprocessor Power-Fail Warning | Low-Battery Detection in Portable Equipment |
|
Use Scenario: Providing early warning to μP before brownout-induced reset, enabling graceful shutdown or data save. IC Role / Device Role / Timing Role: Trip-point comparator feeding NMI or dedicated reset input with programmable delay via RC network. Use Value: 40µs turn-on delay (ton) enables fast response; hysteresis eliminates chatter during marginal supply conditions. |
Use Scenario: Monitoring single-cell Li-ion or multi-cell alkaline packs in handheld medical or test instruments. IC Role / Device Role / Timing Role: Programmable low-voltage cutoff circuit disabling load when cell voltage falls below safe discharge level. Use Value: Resistor-programmable trip point accommodates varying battery chemistries; 2.0V min supply allows operation down to near-dead battery state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8211ESA | Same core functionality, but rated for -40°C to +85°C only; SO-8 package, no PR-T tape-and-reel suffix | Suitable for commercial/industrial environments, not extended temp or high-reliability programs | Select MAX8211ESA if operating temperature does not exceed +85°C and MIL-STD-883 processing is unnecessary |
| TLV809E33DBZR | Fixed 3.3V threshold, no programmable resistor network; 1.6V–6.0V supply range; 0.5µA IQ; SOT-23-3 | Used in cost-sensitive, space-constrained applications where fixed trip point suffices | Choose TLV809E33DBZR only when programmability, wide supply range, and extended temperature are not required |
Compared with MAX8211ESA and TLV809E33DBZR, the MAX8211MSA/PR-T uniquely combines programmable trip voltage, -55°C to +125°C operation, current-limited output, and SO-8 tape-and-reel packaging-making it optimal for high-reliability, field-deployed systems requiring long-term stability and design flexibility.
Availability
MAX8211MSA/PR-T is available at Aetrix Electronics and suitable for battery-backup switching, power-supply fault monitoring, and microprocessor power-fail warning applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX8211MSA/PR-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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX8211 product line delivers precision, low-power voltage supervision ICs optimized for reliable power-fail detection and programmable threshold monitoring in mission-critical embedded systems.
FAQ
What is the maximum supply voltage for MAX8211MSA/PR-T?
The absolute maximum supply voltage for MAX8211MSA/PR-T is +18V, but the guaranteed operating range is 2.0V to 16.5V. Operation above 16.5V risks violating specifications and is not recommended-even though the device may survive transient stress up to 18V. For designs using 15V or lower rails, MAX8211MSA/PR-T provides full parametric compliance and long-term reliability.
How does the MAX8211MSA/PR-T differ from the MAX8212 variant?
The MAX8211MSA/PR-T activates its output when the THRESH pin voltage falls *below* the 1.15V internal reference-ideal for undervoltage detection-and limits output sink current to 7mA. In contrast, the MAX8212 activates when THRESH exceeds 1.15V (for overvoltage) and has no current limit. This functional distinction makes MAX8211MSA/PR-T unsuitable as a drop-in replacement for MAX8212 in overvoltage applications.
Can MAX8211MSA/PR-T replace ICL8211 in existing designs?
Yes-MAX8211MSA/PR-T is explicitly specified as a plug-in replacement for ICL8211 in applications where supply voltage stays below 16.5V. It retains identical pinout and basic function while improving quiescent current (5µA vs. ~100µA), reference accuracy (±40mV vs. ±100mV), and hysteresis output capability (10mA vs. 21µA). No PCB changes are needed for direct substitution.
What is the purpose of the HYST pin on MAX8211MSA/PR-T?
The HYST pin on MAX8211MSA/PR-T is an open-drain p-channel output used to inject controlled positive feedback into the THRESH node via an external resistor (R3). This creates hysteresis-raising the effective trip point on rising voltage and lowering it on falling voltage-to prevent output oscillation due to noise or slow-rising/falling supply edges. Its 10mA capability simplifies robust implementation without additional active components.
Is MAX8211MSA/PR-T suitable for battery-powered IoT sensors?
Yes-MAX8211MSA/PR-T is highly suitable for battery-powered IoT sensors due to its 5µA quiescent current, ability to operate down to 2.0V supply, and programmable threshold that adapts to varying battery chemistries (e.g., Li-SOCl₂, Li-MnO₂). Its -55°C to +125°C rating further supports outdoor or industrial deployments where ambient extremes challenge conventional supervisors.
MAX8211MSA/PR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for MAX8211MSA/PR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8211MSA/PR-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 MAX8211MSA/PR-T reliable?
The price and inventory of MAX8211MSA/PR-T 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-T is usually 5 days.
3.What payment methods are accepted for MAX8211MSA/PR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8211MSA/PR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8211MSA/PR-T?
MAX8211MSA/PR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8211MSA/PR-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 MAX8211MSA/PR-T?
For technical support, including MAX8211MSA/PR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8211MSA/PR-T requirements.
6.How does Aetrix verify that MAX8211MSA/PR-T is sourced from the original manufacturer or authorized distributors?
All MAX8211MSA/PR-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 MAX8211MSA/PR-T meets industry standards.
7.What is the process for return or replacement of MAX8211MSA/PR-T?
All MAX8211MSA/PR-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8211MSA/PR-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 MAX8211MSA/PR-T part is unused and in its original packaging.
Return procedure for MAX8211MSA/PR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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