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Analog Devices Inc./Maxim Integrated MAX8211CPA
- Part No.:
- MAX8211CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX8211CPA.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,815
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Product details
Overview
The MAX8211CPA from Analog Devices is a CMOS micropower voltage detector IC designed to monitor supply rails and provide power-fail warning to microprocessors. It features a 1.15V internal bandgap reference, ±40mV threshold accuracy (±3.5%), 5µA quiescent current, 7mA current-limited open-drain output sink, and operates across a 2.0V–16.5V supply range. It is used in undervoltage detection circuits for logic-supply monitoring in embedded control systems.
For engineers reviewing the MAX8211CPA datasheet, MAX8211CPA pinout, MAX8211CPA application, or MAX8211CPA equivalent, key selection criteria include programmable trip voltage via external resistors, hysteresis-enabled noise immunity, guaranteed operation over 0°C to +70°C, and compatibility with legacy ICL8211-based designs requiring low-quiescent-current replacement.
Technical Context
The MAX8211CPA implements a precision comparator architecture with an on-chip 1.15V bandgap reference and open-drain n-channel output stage that activates when the THRESH pin voltage falls below the reference. Its hysteresis output (HYST) provides positive feedback capability to eliminate switching chatter in noisy environments.
Unlike the MAX8212, the MAX8211CPA delivers a current-limited 7mA (typ) sink at the OUT pin-enabling direct LED drive without series resistance-and exhibits <0.1mV disparity between THRESH trip and HYST activation thresholds, ensuring clean, stable transitions under varying load and temperature conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports wide-input industrial and automotive logic supplies without external regulation |
| Quiescent Current | 5µA (typ) - enables battery-backed systems to maintain >10-year shelf life with minimal standby drain |
| Threshold Accuracy | ±40mV (±3.5%) - ensures reliable trip point across temperature and supply variation without calibration |
| Output Sink Current | 7mA (typ), current-limited - allows direct interface to TTL/CMOS inputs or LEDs without external current-limiting components |
| Hysteresis Threshold Disparity | ±0.1mV - eliminates output oscillation in marginal voltage conditions by tightly aligning HYST and OUT switching points |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded control and instrumentation applications |
| Package Type | 8-pin Plastic DIP - through-hole mounting compatible with legacy PCBs and manual prototyping |
Pinout & Package
MAX8211CPA is housed in an 8-pin plastic dual-in-line package (DIP) with standard through-hole footprint and 0.3" body width. Pin 1 is THRESH, Pin 2 is HYST, Pin 4 is V+, Pin 5 is GND, and Pin 8 is OUT. Pins 3, 6, and 7 are no-connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (THRESH) | Comparator input | Accepts scaled-down supply voltage; triggers output when below 1.15V reference |
| Pin 2 (HYST) | Hysteresis output | Open-drain p-channel output providing positive feedback to THRESH node for noise immunity |
| Pin 4 (V+) | Power supply input | Primary supply rail connection; powers internal reference and comparator (2.0V–16.5V range) |
| Pin 5 (GND) | Ground reference | Analog and digital ground return; must be low-impedance for stable threshold accuracy |
| Pin 8 (OUT) | Output driver | Current-limited open-drain n-channel sink (7mA typ); pulls low during undervoltage condition |
Key Features
| Feature | Design Value |
|---|---|
| Programmable trip voltage | Set via two external resistors; enables custom undervoltage detection thresholds from 1.15V up to system supply rail |
| On-board hysteresis output | Provides dedicated HYST pin for configurable positive feedback-eliminates need for external op-amp or comparator |
| Low-leakage THRESH input | Input current ≤10nA (max) - permits use of high-value resistor dividers (>10MΩ), reducing total system current draw |
| Plug-in replacement for ICL8211 | Same pinout and function as bipolar ICL8211 - allows drop-in upgrade with improved accuracy, lower IQ, and higher HYST drive |
| Stable over temperature | Threshold drift ≤200ppm/°C - maintains trip point integrity across full 0°C to +70°C operating range |
Applications
| Logic-Supply Undervoltage Detection | Battery-Backup Switchover Control |
|---|---|
Use Scenario: Monitoring a 5.0V nominal logic supply to detect drop below 4.5V VMIN threshold in microcontroller-based instrumentation. IC Role / Device Role / Timing Role: Voltage detector generating NMI interrupt signal to initiate controlled shutdown before brownout. Use Value: Prevents corrupted memory writes and state loss by triggering reset before supply collapses below functional level. | Use Scenario: Switching between main DC supply and backup lithium coin cell in portable medical sensors during mains failure. IC Role / Device Role / Timing Role: Supervisory IC enabling seamless transition by asserting enable signal to backup LDO when main rail falls. Use Value: Ensures continuous real-time data logging during power interruption without firmware intervention. |
| Microprocessor Power-Fail Warning | Industrial Power-Supply Fault Monitoring |
Use Scenario: Providing early warning of impending AC/DC converter failure in PLC I/O modules prior to complete loss. IC Role / Device Role / Timing Role: Dedicated voltage monitor feeding watchdog timer input to trigger graceful firmware save before reset. Use Value: Enables preservation of last-known operational parameters and fault logs in nonvolatile memory. | Use Scenario: Detecting overvoltage and undervoltage faults on 12V/24V industrial power rails feeding motor drives and sensors. IC Role / Device Role / Timing Role: Standalone supervisor IC driving opto-isolated fault latch and front-panel LED indicator. Use Value: Provides immediate visual and electrical fault signaling without relying on host processor availability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8211CSA | Same electrical specs but in 8-pin SO surface-mount package | Requires PCB redesign for SMT assembly; not suitable for through-hole prototyping or legacy DIP layouts | Select when board space is constrained and automated reflow is available |
| TLV809JDBZR | Fixed 4.38V threshold, no programmability, 1.8V–6V supply range, 0.5µA IQ | Lacks resistor-programmable trip point and HYST output; limited to single-rail low-voltage systems | Select only for simple fixed-threshold detection where cost and ultra-low IQ outweigh flexibility needs |
Compared with MAX8211CSA and TLV809JDBZR, the MAX8211CPA uniquely combines through-hole DIP packaging, full trip voltage programmability, integrated hysteresis output, and robust 2V–16.5V operation-making it optimal for field-serviceable, multi-rail, and legacy-compatible supervisory designs.
Availability
MAX8211CPA is available at Aetrix Electronics and suitable for microprocessor supervision, battery-backup switchover, and industrial power-fault monitoring requiring stable component supply across extended production cycles.
Supply support for MAX8211CPA 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 MAX8211CPA belongs to the MAX821x family of programmable voltage monitors, engineered specifically for reliable, low-power, and field-upgradeable power-supply supervision in commercial-grade embedded systems.
FAQ
What is the maximum supply voltage rating for the MAX8211CPA?
The MAX8211CPA 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 parametric degradation or damage. The MAX8211CPA must never be used in circuits where transient overvoltage could exceed +18V, even briefly.
Can the MAX8211CPA be used as a direct replacement for the ICL8211 in existing designs?
Yes-the MAX8211CPA is explicitly specified as a plug-in replacement for the ICL8211 in applications with supply voltages below 16.5V. It shares identical pinout, function, and package (8-pin DIP), while offering improved threshold accuracy (±3.5% vs. ±5%), lower quiescent current (5µA vs. ~100µA), and higher hysteresis output drive (10mA vs. 21µA).
How does the hysteresis feature work in the MAX8211CPA?
The MAX8211CPA provides a dedicated HYST pin-an open-drain p-channel output that sources current when the THRESH voltage exceeds 1.15V. By routing HYST through a resistor to the THRESH node, users implement positive feedback to widen the effective trip window and prevent noise-induced oscillation. The MAX8211CPA's HYST-to-THRESH disparity is only ±0.1mV, ensuring precise hysteresis control.
What is the output behavior of the MAX8211CPA during normal and fault conditions?
The MAX8211CPA features an open-drain n-channel OUT pin that remains high-impedance (floating) when the THRESH voltage is ≥1.15V. When THRESH drops below 1.15V, OUT sinks up to 7mA (typ) to GND-asserting a logic-low fault signal. This current-limited sink allows direct connection to microcontroller NMI pins or LEDs without external current-limiting resistors.
Does the MAX8211CPA require external components to function?
Yes-the MAX8211CPA requires at minimum two external resistors (R1, R2) to form a voltage divider scaling the monitored supply to the THRESH pin. A third resistor (R3) is optional but recommended to connect HYST to the THRESH node for noise-immune hysteresis. No external capacitors or regulators are needed for basic operation.
MAX8211CPA 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
MAX8211CPA FAQ
1.How can I place an order for MAX8211CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8211CPA 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 MAX8211CPA reliable?
The price and inventory of MAX8211CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8211CPA is usually 5 days.
3.What payment methods are accepted for MAX8211CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8211CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8211CPA?
MAX8211CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8211CPA 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 MAX8211CPA?
For technical support, including MAX8211CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8211CPA requirements.
6.How does Aetrix verify that MAX8211CPA is sourced from the original manufacturer or authorized distributors?
All MAX8211CPA 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 MAX8211CPA meets industry standards.
7.What is the process for return or replacement of MAX8211CPA?
All MAX8211CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX8211CPA, 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 MAX8211CPA part is unused and in its original packaging.
Return procedure for MAX8211CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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