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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:2,469
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Product details
Overview
The MAX8212CPA from Analog Devices is a CMOS micropower voltage detector designed to monitor supply rails and trigger microprocessor power-fail warnings. It features a 1.15V internal bandgap reference, open-drain n-channel output, programmable threshold via external resistors, ±40mV threshold accuracy, and operates across 2.0V–16.5V supply range. It is used in undervoltage/overvoltage detection for industrial control power supplies.
For engineers reviewing the MAX8212CPA datasheet, MAX8212CPA pinout, MAX8212CPA application, or MAX8212CPA equivalent, key selection criteria include its non-current-limited output (vs. MAX8211's 7mA sink), hysteresis feedback capability, low 5µA quiescent current, and compatibility with ICL8212 in DIP-8 form factor at ≤16.5V systems.
Technical Context
The MAX8212CPA implements a precision comparator architecture with a stable 1.15V bandgap reference and low-leakage THRESH input (≤10nA). Its output stage activates when THRESH voltage exceeds 1.15V, sinking up to 35mA typical without internal current limiting-requiring external current management in design.
Hysteresis is implemented via an open-drain p-channel HYST output referenced to V+, enabling programmable noise immunity through positive feedback into the resistor divider. The device supports both overvoltage and undervoltage detection configurations depending on external network topology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports logic and industrial supply monitoring without external regulation |
| Threshold Reference | 1.15V ±40mV - enables precise trip-point setting with external resistor dividers |
| Quiescent Current | 5µA typical - minimizes standby power in battery-backed or energy-sensitive systems |
| Output Type | Open-drain n-channel - allows wired-OR configuration and level-shifting to higher voltages |
| Hysteresis Output | Open-drain p-channel referenced to V+ - delivers up to 10mA for configurable hysteresis feedback |
| Threshold Tempco | -200ppm/°C - ensures stable trip points across -0°C to +70°C operating range |
| Switching Delay | ton = 250µs, toff = 3ms - defines response time for fault detection and recovery signaling |
Pinout & Package
MAX8212CPA uses an 8-pin Plastic DIP (P8-1) package with through-hole mounting and 0.3-inch width. 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; pin 8 is OUT. Case is not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - THRESH | Comparator input | Voltage sensing node; compared against 1.15V reference to determine output state |
| 2 - HYST | Hysteresis feedback output | Open-drain p-channel output referenced to V+; used to inject positive feedback for noise immunity |
| 3,4 - N.C. | No connection | Internally unconnected; must remain floating or tied to GND per layout best practice |
| 5 - V+ | Positive supply | Power input for internal circuitry; supports 2.0V–16.5V operation |
| 6 - GND | Ground reference | Analog and digital ground return; must be low-impedance for stable reference operation |
| 7,8 - N.C. | No connection | Internally unconnected; pins 7 and 8 are unused in CPA variant |
| 8 - OUT | Main output driver | Open-drain n-channel output; sinks current when THRESH > 1.15V; no internal current limit |
Key Features
| Feature | Design Value |
|---|---|
| Programmable threshold detection | Set via two external resistors - enables flexible undervoltage or overvoltage trip points without changing IC |
| On-board hysteresis output | HYST pin provides dedicated feedback path - eliminates need for external op-amp or discrete transistor hysteresis circuits |
| Low-quiescent-current operation | 5µA supply current - extends battery life in portable or backup-power applications |
| ICL8212 plug-in replacement | Same pinout and function as bipolar ICL8212 - enables drop-in upgrade to lower-power, higher-accuracy CMOS solution |
| High-output-current capability | 35mA typical sink at OUT - drives LEDs, optocouplers, or logic inputs directly without buffer transistors |
Applications
| Industrial Power-Supply Monitoring | Microprocessor Reset Generation |
|---|---|
Use Scenario: Monitoring 12V DC industrial power rails for brownout conditions before PLC controller resets. IC Role / Device Role / Timing Role: Voltage detector triggering system-level reset signal when supply drops below 11.2V. Use Value: Prevents erratic behavior during marginal supply by asserting reset before µP enters undefined state. | Use Scenario: Generating clean reset pulse for 8051-based embedded controller upon cold start or power recovery. IC Role / Device Role / Timing Role: Threshold comparator with hysteresis ensures glitch-free reset assertion/deassertion during supply ramp-up. Use Value: Eliminates need for RC-based reset circuits with poor temperature stability and long delay variation. |
| Battery Backup Switchover | Logic Supply Undervoltage Detection |
Use Scenario: Detecting main 5V rail collapse in telecom line card to switch to backup battery within 10ms. IC Role / Device Role / Timing Role: Overvoltage detector configured to assert switchover signal when VMAIN falls below 4.65V. Use Value: Enables seamless transition with <3ms detection latency and no false triggers from ripple. | Use Scenario: Monitoring 5.0V logic supply in FPGA carrier board to prevent configuration corruption. IC Role / Device Role / Timing Role: Undervoltage detector asserting POR signal when supply dips below 4.5V nominal. Use Value: Meets JEDEC VIL/VIH margin requirements with ±40mV trip accuracy and 75mV hysteresis. |
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; activates on THRESH < 1.15V | Better suited for LED drive or low-current reset assertion where output current control is critical | Select MAX8211CPA when output current limiting is required to protect downstream loads or simplify design |
| TLV809EC26DBZR | Fixed 2.63V threshold; SOT-23-3 package; 1.8V–6V supply range | Not programmable; limited to single-supply monitoring; no hysteresis output | Choose TLV809EC26DBZR only for cost-sensitive, fixed-threshold applications with no hysteresis or programmability needs |
Compared with MAX8211CPA and TLV809EC26DBZR, the MAX8212CPA offers programmable trip points, higher supply voltage support (up to 16.5V), and a dedicated hysteresis output-making it uniquely suitable for industrial overvoltage detection and legacy ICL8212 upgrades requiring direct replacement.
Availability
MAX8212CPA is available at Aetrix Electronics and suitable for industrial power-supply monitoring, microprocessor reset generation, and battery-backup switchover requiring stable component supply and long-term obsolescence management.
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 MAX8212CPA belongs to the MAX821x family of micropower voltage monitors, engineered for precision supply-rail supervision in legacy and new designs where programmability, low power, and ICL8212 compatibility are essential.
FAQ
What is the primary function of the MAX8212CPA?
The MAX8212CPA is a programmable voltage detector that monitors supply rails and asserts an open-drain output when the THRESH pin voltage exceeds 1.15V. Unlike the MAX8211CPA, the MAX8212CPA activates on overvoltage conditions and provides no internal current limiting on its OUT pin-making it ideal for driving higher-current loads like optocouplers or reset latches in industrial systems.
How does the MAX8212CPA differ from the MAX8211CPA in operation?
The MAX8212CPA turns its output ON when THRESH voltage is greater than 1.15V (overvoltage detection), while the MAX8211CPA turns ON when THRESH is less than 1.15V (undervoltage detection). Additionally, the MAX8212CPA has no output current limit, whereas the MAX8211CPA limits sink current to ~7mA. Both share identical pinout, package, and hysteresis functionality.
Can the MAX8212CPA replace an ICL8212 in existing designs?
Yes-the MAX8212CPA is explicitly specified as a plug-in replacement for the bipolar ICL8212 in applications with supply voltages under 16.5V. It retains the same 8-pin DIP footprint and functional interface but improves on quiescent current (5µA vs. ~100µA), threshold accuracy (±40mV vs. ±100mV), and hysteresis output drive (10mA vs. 21µA), making it a direct, performance-enhancing upgrade.
What is the role of the HYST pin on the MAX8212CPA?
The HYST pin on the MAX8212CPA is an open-drain p-channel output referenced to V+, delivering up to 10mA to inject positive feedback into the external resistor divider. This creates user-defined hysteresis-preventing output chatter near the trip point due to noise or slow-rising/falling supply edges-without requiring external components beyond R3.
What are the absolute maximum ratings for the MAX8212CPA supply voltage?
The MAX8212CPA has an absolute maximum supply voltage rating of +18V, but its guaranteed operating range is 2.0V to 16.5V. Exceeding 18V risks permanent damage. For reliable operation in 15V systems, the MAX8212CPA is fully rated; however, it must never be used in circuits where transient overvoltage could breach the 18V limit-even briefly-due to lack of internal clamping.
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:
- 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:
- 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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