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Analog Devices Inc./Maxim Integrated MAX8212CPA+
- Part No.:
- MAX8212CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX8212CPA+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:890
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Product details
Overview
MAX8212CPA+ 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, 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 circuits where precise, low-power detection is required.
For engineers reviewing the MAX8212CPA+ datasheet, MAX8212CPA+ pinout, MAX8212CPA+ application, or MAX8212CPA+ equivalent, key selection considerations include its non-current-limited output stage (vs. MAX8211's 7mA sink), THRESH-pin activation logic (ON when >1.15V), hysteresis feedback capability via HYST pin, and compatibility with ICL8212 in <16.5V systems.
Technical Context
The MAX8212CPA+ implements a comparator-based detection architecture with an internal 1.15V bandgap reference and open-drain n-channel output transistor. Its THRESH input triggers output activation when voltage exceeds the reference, distinguishing it from the MAX8211's under-voltage trip behavior.
It includes a dedicated open-drain p-channel HYST output for external positive feedback, enabling user-defined hysteresis width via resistor network (R3). The device supports programmable trip points using two external resistors (R1, R2) and exhibits ±200ppm/°C threshold temperature coefficient and <1.0mV supply-voltage-induced threshold variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports operation across logic and intermediate rail voltages without external regulation |
| Quiescent Current | 5µA typical - enables multi-year battery life in backup-monitoring applications |
| Threshold Accuracy | ±40mV (±3.5%) at +25°C - ensures reliable trip-point repeatability without calibration |
| Output Type | Open-drain n-channel - allows wired-OR configuration and level-shifting up to 16.5V |
| Hysteresis Control | Dedicated HYST pin with ±0.1mV THRESH/HYST disparity - eliminates chatter in noisy environments |
| Threshold Tempco | ±200ppm/°C - maintains stable trip point over industrial temperature range (0°C to +70°C) |
| THRESH Input Leakage | 0.01nA to 20nA - permits use of high-value resistor dividers (>10MΩ), minimizing system current drain |
Pinout & Package
MAX8212CPA+ is housed in an 8-pin plastic DIP (dual in-line package) with through-hole mounting and 0.3" wide body. Pin 1 is THRESH, Pin 2 is HYST, Pins 3 and 4 are no-connect, Pin 5 is V+, Pin 6 is GND, Pins 7 and 8 are no-connect, and Pin 8 is OUT (standardized top-view orientation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (THRESH) | Comparator input | Voltage sensing node; output activates when THRESH > 1.15V (overvoltage mode) |
| Pin 2 (HYST) | Hysteresis feedback output | Open-drain p-channel output for positive feedback; enables noise-immune switching |
| Pins 3, 4, 7 | No-connect | Internally unconnected; must remain floating or grounded per layout guidelines |
| Pin 5 (V+) | Positive supply | Power input for internal reference and comparator; supports 2.0V–16.5V operation |
| Pin 6 (GND) | Ground reference | Analog and digital ground return; requires low-impedance connection to system ground plane |
| Pin 8 (OUT) | Main output driver | Open-drain n-channel output; sinks up to ~35mA typical (no internal current limit) |
Key Features
| Feature | Design Value |
|---|---|
| Programmable trip voltage | Set via external R1/R2 divider - supports custom thresholds from ~1.2V to >15V without component change |
| Non-current-limited output | Typical 35mA sink capability at OUT - drives LEDs, optocouplers, or logic inputs directly without series limiting |
| On-board hysteresis control | HYST pin provides user-adjustable dead-band - eliminates false triggering from supply ripple or EMI |
| ICL8212 plug-in replacement | Pin- and function-compatible with bipolar ICL8212 in ≤16.5V systems - enables drop-in upgrade to lower IQ and tighter tolerance |
| Low-leakage THRESH input | Sub-nA input bias - allows >10MΩ resistor networks, reducing standby current by >90% vs. bipolar predecessors |
Applications
| Battery-Backup Switching | Power-Supply Fault Monitoring |
|---|---|
Use Scenario: Detecting main supply collapse to trigger switchover to backup battery in embedded controllers. IC Role / Device Role / Timing Role: Voltage monitor asserting active-low NMI or reset signal upon sustained undervoltage condition. Use Value: 5µA quiescent current extends battery life; ±40mV threshold accuracy prevents premature or delayed switchover. | Use Scenario: Monitoring DC-DC converter output rails in industrial PLCs for brownout or overvoltage events. IC Role / Device Role / Timing Role: Standalone fault flag generator interfacing with FPGA or microcontroller GPIO. Use Value: Open-drain OUT supports 16.5V rail monitoring; HYST pin enables robust hysteresis tuning for noisy switcher outputs. |
| Microprocessor Voltage Monitoring | Overvoltage Detection in Telecom Power |
Use Scenario: Supervising core voltage (e.g., 3.3V or 5V) in legacy μP systems requiring NMI-based power-fail warning. IC Role / Device Role / Timing Role: Threshold comparator generating early warning interrupt before VCC drops below operational minimum. Use Value: 1.15V internal reference + external divider achieves precise trip points; 40µs turn-on delay ensures clean edge timing. | Use Scenario: Protecting line-card circuitry from overvoltage transients on -48V telecom supplies during hot-swap or surge events. IC Role / Device Role / Timing Role: Overvoltage detector driving crowbar or shutdown logic when input exceeds safe margin. Use Value: 16.5V max supply rating aligns with telecom transient specs; non-current-limited OUT enables fast gate drive for protection MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8211CPA+ | Current-limited 7mA output sink; trips when THRESH < 1.15V (undervoltage mode) | Suitable for low-power reset generation where output loading is light and trip polarity must be inverted | Select MAX8211CPA+ when system requires guaranteed current limiting and undervoltage-only response |
| TLV803EC26DBZR | Fixed 2.63V threshold; no external resistor programming; 1.8µA IQ; SOT-23-3 package | Used in space-constrained designs needing simple, fixed-threshold reset without hysteresis tuning | Select TLV803EC26DBZR when board area is critical and programmability/hysteresis are not required |
Compared with MAX8211CPA+ and TLV803EC26DBZR, the MAX8212CPA+ uniquely supports programmable overvoltage detection with high-output-current capability and user-configurable hysteresis-making it optimal for flexible, high-reliability power supervision where trip point and noise immunity must be tailored.
Availability
MAX8212CPA+ is available at Aetrix Electronics and suitable for battery-backup switching, power-supply fault monitoring, and microprocessor voltage monitoring requiring stable component supply across industrial and embedded design cycles.
Supply support for MAX8212CPA+ 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/MAX8212 product line delivers precision, low-power voltage supervision ICs optimized for microprocessor power-fail warning and programmable threshold detection in resource-constrained systems.
FAQ
What is the correct activation logic for the MAX8212CPA+ THRESH pin?
The MAX8212CPA+ output activates (pulls low) when the voltage applied to the THRESH pin exceeds the internal 1.15V bandgap reference. This overvoltage-triggered behavior distinguishes it from the MAX8211CPA+, which activates when THRESH falls below 1.15V. The THRESH input exhibits sub-nA leakage, enabling high-impedance resistor-divider networks for precise trip-point setting across wide voltage ranges.
Does the MAX8212CPA+ have built-in current limiting on its OUT pin?
No, the MAX8212CPA+ does not include internal current limiting on the OUT pin. Its open-drain n-channel output can typically sink ~35mA but must be externally current-limited in applications exceeding safe power dissipation. This contrasts with the MAX8211CPA+, whose output is internally limited to 7mA. System designers must verify that load conditions and supply voltage keep junction temperature within limits per the 727mW plastic DIP derating curve.
How is hysteresis implemented on the MAX8212CPA+?
Hysteresis on the MAX8212CPA+ is implemented via the dedicated HYST pin-an open-drain p-channel output that sources current back into the THRESH node through an external resistor (R3). When OUT is low, HYST pulls high (relative to V+), raising the effective THRESH trip point for turn-off. This creates a controlled dead-band, eliminating chatter caused by noise or slow-rising/falling supply edges. The magnitude is set by R3 value and divider ratio.
Can the MAX8212CPA+ replace an ICL8212 in existing designs?
Yes, the MAX8212CPA+ is specified as a plug-in replacement for the bipolar ICL8212 in applications where the maximum supply voltage remains below 16.5V. It retains identical pinout and functional behavior while offering improved performance: 5µA vs. ~100µA quiescent current, ±40mV vs. ±100mV threshold accuracy, and higher HYST output current (up to 10mA vs. 21µA). Layout changes are unnecessary, but stability in closed-loop zener applications should be verified.
What is the operating temperature range of the MAX8212CPA+?
MAX8212CPA+ is rated for commercial temperature operation from 0°C to +70°C. This range is defined by the 'C' suffix in the part number and validated per the device's characterization data. The plastic DIP package (P8-1) supports this range with 9.09mW/°C derating above +70°C. For extended temperature applications, consider MAX8212EPA (–40°C to +85°C) or MAX8212MJA (–55°C to +125°C), which use different package and process variants.
MAX8212CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX8212CPA+ FAQ
1.How can I place an order for MAX8212CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8212CPA+ 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 MAX8212CPA+ reliable?
The price and inventory of MAX8212CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8212CPA+ is usually 5 days.
3.What payment methods are accepted for MAX8212CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8212CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8212CPA+?
MAX8212CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8212CPA+ 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 MAX8212CPA+?
For technical support, including MAX8212CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8212CPA+ requirements.
6.How does Aetrix verify that MAX8212CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX8212CPA+ 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 MAX8212CPA+ meets industry standards.
7.What is the process for return or replacement of MAX8212CPA+?
All MAX8212CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8212CPA+, 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 MAX8212CPA+ part is unused and in its original packaging.
Return procedure for MAX8212CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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