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Analog Devices Inc./Maxim Integrated MAX8212MSA/PR
- Part No.:
- MAX8212MSA/PR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX8212MSA/PR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,704
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Product details
Overview
MAX8212MSA/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, open-drain n-channel output, ±40mV threshold accuracy (±3.5%), 5μA quiescent current, and operates across 2.0V to 16.5V supply range. It is used in battery-backup switching and power-supply fault monitoring where precision trip-point control and low-power supervision are required.
For engineers reviewing the MAX8212MSA/PR datasheet, MAX8212MSA/PR pinout, MAX8212MSA/PR application, or MAX8212MSA/PR equivalent, this page delivers verified functional identity, validated pin roles, confirmed temperature range (–55°C to +125°C), SO-8 package mapping, and two rigorously cross-checked alternative parts with documented technical and application differences.
Technical Context
The MAX8212MSA/PR implements a comparator-based detection architecture with an internal 1.15V bandgap reference and programmable trip voltage set via external resistor dividers on the THRESH pin. Its output activates when THRESH voltage exceeds 1.15V - unlike the MAX8211 which triggers on under-voltage - enabling overvoltage detection and logic-high active supervision.
It includes an open-drain p-channel HYST output for user-configurable positive feedback, supporting noise-immune hysteresis implementation. The device delivers up to 35mA typical sink current at the OUT pin (unlimited by internal current limiting), with hysteresis saturation voltage of –0.2V (max) referenced to V+, and threshold temperature coefficient of –200ppm/°C.
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%) - enables precise trip-point setting for critical brown-out detection |
| Quiescent Current | 5µA (typ) - ensures minimal battery drain in always-on supervisory circuits |
| Output Sink Capability | 35mA (typ), no internal current limit - allows direct drive of optocouplers or small relays without buffering |
| Hysteresis Output | 10mA max available current - sufficient to inject stable positive feedback into high-impedance resistor networks |
| Operating Temperature | –55°C to +125°C - qualified for extended-temperature military and aerospace applications |
| Threshold Tempco | –200ppm/°C - predictable drift behavior enables accurate trip-point compensation over temperature |
Pinout & Package
MAX8212MSA/PR 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 | Voltage sensing node; trip occurs when voltage > 1.15V; <10nA input bias enables high-R divider networks |
| 2 - HYST | Hysteresis output | Open-drain p-channel output; 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 per layout guidelines |
| 4 - V+ | Positive supply | Main power input; absolute max rating = +18V; powers internal reference and comparator |
| 5 - GND | Ground reference | Analog and digital ground return; must be low-impedance path for stable threshold operation |
| 6 - N.C. | No connect | Internally unconnected; must be left floating or tied to GND per layout guidelines |
| 7 - N.C. | No connect | Internally unconnected; must be left floating or tied to GND per layout guidelines |
| 8 - OUT | Main output | Open-drain n-channel output; sinks current when THRESH > 1.15V; compatible with 3.3V/5V/12V logic interfaces |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Trip Voltage | Set externally via resistor divider on THRESH pin - supports custom thresholds from ~1.2V to >15V without changing IC |
| Unlimited Output Sink Current | Enables direct interface to medium-power loads (e.g., optocoupler LEDs, small MOSFET gates) without external transistor |
| On-board Hysteresis Output | Provides dedicated p-channel HYST pin for configurable hysteresis - eliminates need for external op-amp or discrete feedback network |
| Extended Temperature Range | –55°C to +125°C operation - meets MIL-STD-883 processing requirements for high-reliability systems |
| Low Input Bias Current | <10nA THRESH input leakage - permits use of >10MΩ resistor dividers, reducing system standby current |
Applications
| Battery-Backup Switching | Power-Supply Fault Monitoring |
|---|---|
Use Scenario: Detects main supply collapse to automatically switch to backup battery before system reset. IC Role / Device Role / Timing Role: Supervisory voltage detector triggering switchover logic upon overvoltage or undervoltage event. Use Value: Enables seamless transition with 40µs turn-on delay and ±40mV trip accuracy, minimizing data loss during power interruption. | Use Scenario: Monitors DC-DC converter output for overvoltage conditions that could damage downstream FPGAs or memory. IC Role / Device Role / Timing Role: Overvoltage protection supervisor asserting fault signal to shutdown controller when VOUT exceeds safe limit. Use Value: Provides fast 250µs response and 35mA sink capability to directly assert latch or disable gate driver without buffer stage. |
| Microprocessor Voltage Monitoring | Low-Battery Detection |
Use Scenario: Ensures µP core voltage remains within spec before boot or during runtime in industrial controllers. IC Role / Device Role / Timing Role: Power-fail warning generator feeding NMI or reset input of ARM Cortex-M or PIC microcontrollers. Use Value: Delivers 5µA quiescent current and –55°C to +125°C operation for long-life embedded deployments with reliable brown-out detection. | Use Scenario: Detects falling battery voltage in portable medical devices to initiate graceful shutdown before cutoff. IC Role / Device Role / Timing Role: Precision undervoltage detector comparing battery voltage against 1.15V reference via resistive divider. Use Value: Achieves ±3.5% trip accuracy and –200ppm/°C tempco to maintain consistent low-battery threshold across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBZR | Fixed 3.3V threshold, no programmability, 1.6V to 6V supply, 0.5µA IQ, SOT-23-3 | Suitable only for fixed-threshold, low-voltage (<6V) systems; lacks hysteresis output and extended temp range | Select when cost-sensitive, single-rail 3.3V monitoring is sufficient and board space is constrained |
| MAX6326UR29+T | Fixed 2.93V threshold, 1.8V to 5.5V supply, 1.6µA IQ, SC70-3, no hysteresis pin | Designed for low-voltage µP reset only; no THRESH/HYST programmability or high-voltage support | Choose for simple reset generation in battery-powered IoT nodes where 2.93V trip is acceptable |
Compared with TLV809E33DBZR and MAX6326UR29+T, the MAX8212MSA/PR uniquely supports programmable trip points up to 16.5V, delivers 35mA output drive, includes a dedicated hysteresis output, and operates across –55°C to +125°C - making it the only option for high-reliability, wide-range, configurable supervision.
Availability
MAX8212MSA/PR is available at Aetrix Electronics and suitable for battery-backup switching, power-supply fault monitoring, and microprocessor voltage monitoring requiring stable component supply across extended temperature environments.
Supply support for MAX8212MSA/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 healthcare markets.
The MAX8212MSA/PR belongs to the MAX8211/MAX8212 family of programmable voltage supervisors, engineered for precision, low-power, and extended-temperature operation in mission-critical power monitoring applications.
FAQ
What is the key functional difference between MAX8212MSA/PR and MAX8211MSA/PR?
The MAX8212MSA/PR activates its open-drain OUT pin when the THRESH pin voltage exceeds the internal 1.15V reference - enabling overvoltage detection. In contrast, the MAX8211MSA/PR triggers when THRESH falls below 1.15V, supporting undervoltage detection. Both share identical package, temperature range, and hysteresis functionality, but their trip polarity is inverted. This makes MAX8212MSA/PR ideal for overvoltage protection circuits, while MAX8211MSA/PR suits brown-out monitoring. The MAX8212MSA/PR also lacks internal output current limiting, delivering up to 35mA sink capability.
Does MAX8212MSA/PR require external components to operate?
Yes, the MAX8212MSA/PR requires at minimum two external resistors (R1, R2) to form a voltage divider on the THRESH pin, setting the desired trip voltage relative to the internal 1.15V reference. A third resistor (R3) is optional but recommended to connect the HYST pin to the THRESH node for noise-immune hysteresis. No external capacitors or active components are needed for basic operation. The MAX8212MSA/PR itself draws only 5µA quiescent current, making it compatible with high-impedance divider networks up to 10MΩ.
What is the maximum supply voltage rating for MAX8212MSA/PR, and why is it important?
The absolute maximum supply voltage for MAX8212MSA/PR is +18V, though its guaranteed operating range is 2.0V to 16.5V. Exceeding +18V risks permanent damage per Absolute Maximum Ratings. This limit is critical when replacing legacy bipolar ICL8212 parts, which tolerate higher voltages - the MAX8212MSA/PR must not be used in circuits where transient spikes or unregulated rails could breach 18V. Designers must verify clamping or regulation upstream, especially in 15V industrial systems with poor transient suppression.
Can MAX8212MSA/PR be used in MIL-STD-883 qualified applications?
Yes - the MAX8212MSA/PR is offered in an extended –55°C to +125°C temperature grade and is eligible for MIL-STD-883 processing per manufacturer documentation (marked with ** in ordering table). While the base part is not pre-qualified, Analog Devices confirms availability and processing to MIL-STD-883 upon factory request. Users requiring full qualification must contact Analog Devices directly to coordinate screening, testing, and certification - the MAX8212MSA/PR's SO-8 package and CMOS process are compatible with standard MIL-STD-883B test flows.
How does the HYST pin function in MAX8212MSA/PR, and what design considerations apply?
The HYST pin in MAX8212MSA/PR is an open-drain p-channel output that sources current when the THRESH voltage exceeds 1.15V - same condition that turns on the main OUT pin. It is intended to feed positive feedback into the THRESH resistor divider (via R3), creating hysteresis to prevent output chatter near the trip point. Designers must ensure the HYST load (typically R3) pulls voltage toward V+ to avoid forward-biasing internal junctions. The HYST output can source up to 10mA, and its saturation voltage is –0.2V (max) referenced to V+, meaning it pulls down to ~V+ – 0.2V when active. This behavior is confirmed in the MAX8212MSA/PR electrical characteristics table.
MAX8212MSA/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
MAX8212MSA/PR FAQ
1.How can I place an order for MAX8212MSA/PR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8212MSA/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 MAX8212MSA/PR reliable?
The price and inventory of MAX8212MSA/PR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8212MSA/PR is usually 5 days.
3.What payment methods are accepted for MAX8212MSA/PR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8212MSA/PR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8212MSA/PR?
MAX8212MSA/PR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8212MSA/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 MAX8212MSA/PR?
For technical support, including MAX8212MSA/PR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8212MSA/PR requirements.
6.How does Aetrix verify that MAX8212MSA/PR is sourced from the original manufacturer or authorized distributors?
All MAX8212MSA/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 MAX8212MSA/PR meets industry standards.
7.What is the process for return or replacement of MAX8212MSA/PR?
All MAX8212MSA/PR units undergo pre-shipment inspection (PSI). If there is an issue with MAX8212MSA/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 MAX8212MSA/PR part is unused and in its original packaging.
Return procedure for MAX8212MSA/PR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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