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Analog Devices Inc./Maxim Integrated MAX8212CSA+T
- Part No.:
- MAX8212CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX8212CSA+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
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Product details
Overview
MAX8212CSA+T from Analog Devices is a CMOS microprocessor voltage monitor IC with programmable undervoltage/overvoltage detection, featuring a 1.15V internal bandgap reference, open-drain n-channel output, ±40mV threshold accuracy (±3.5%), 5µA quiescent current, and 2.0V–16.5V supply range. It serves as a power-fail warning device in embedded μP systems requiring precise, low-power supply monitoring.
For engineers reviewing the MAX8212CSA+T datasheet, MAX8212CSA+T pinout, MAX8212CSA+T application, or MAX8212CSA+T equivalent, key selection considerations include its non-current-limited output stage (vs. MAX8211's 7mA sink), THRESH-pin activation polarity (high-side trip), hysteresis output capability, and SO-8 package compatibility with legacy ICL8212 designs.
Technical Context
The MAX8212CSA+T implements a comparator-based detection architecture with a precision 1.15V bandgap reference and separate open-drain p-channel HYST output for noise-immune hysteresis feedback. Its THRESH input activates the OUT transistor when voltage exceeds the reference - enabling overvoltage detection without external inversion logic.
Unlike the MAX8211, the MAX8212CSA+T lacks internal output current limiting and delivers up to 35mA typical sink current at VTH = 1.3V, making it suitable for direct LED drive or MOSFET gate control. Hysteresis magnitude is externally programmable via resistor R3 connected between HYST and the THRESH divider node.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports operation across logic and industrial supply rails without external regulation |
| Threshold Accuracy | ±40mV (±3.5%) at +25°C - enables reliable detection of 4.5V logic supply drop to 4.46V under worst-case tolerance |
| Quiescent Current | 5µA typical - minimizes standby power in battery-backed systems and portable devices |
| Output Sink Current | 35mA typical at VTH = 1.3V - drives LEDs or small-signal MOSFETs directly without buffer stages |
| Hysteresis Output | 10mA max available current - supplies sufficient positive feedback to stabilize threshold switching against EMI-induced noise |
| Temperature Range | 0°C to +70°C - qualified for commercial-grade embedded control and instrumentation applications |
| Package | 8-pin SO (SOIC) - industry-standard footprint compatible with automated SMT assembly and IPC-7351 land patterns |
Pinout & Package
MAX8212CSA+T is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with gull-wing leads, JEDEC MS-012AC compliant, 1.27mm pitch, and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - THRESH | Comparator input | Voltage sensing node; OUT activates when THRESH > 1.15V - configured for overvoltage detection |
| 2 - HYST | Hysteresis output | Open-drain p-channel output; provides programmable positive feedback to THRESH node for noise immunity |
| 3 - N.C. | No connect | Internally unconnected; must remain floating or tied to GND per layout guidelines |
| 4 - V+ | Positive supply | Primary power rail input; supports 2.0V–16.5V; powers internal reference and output stages |
| 5 - GND | Ground reference | Analog and digital ground return; requires low-impedance connection to system ground plane |
| 6 - N.C. | No connect | Internally unconnected; must remain floating or tied to GND per layout guidelines |
| 7 - N.C. | No connect | Internally unconnected; must remain floating or tied to GND per layout guidelines |
| 8 - OUT | Main output | Open-drain n-channel output; sinks up to 35mA; requires external pull-up for logic-level signaling |
Key Features
| Feature | Design Value |
|---|---|
| Programmable trip voltage | Set via external resistor divider on THRESH - supports custom thresholds from ~2V to >15V without trimming |
| On-board hysteresis output | HYST pin delivers up to 10mA for configurable hysteresis - eliminates need for external op-amp or comparator |
| Low-leakage THRESH input | Input current ≤10nA - permits use of high-value resistors (up to 10MΩ), reducing divider network power by >90% vs. bipolar alternatives |
| Plug-in replacement for ICL8212 | Pin- and function-compatible with ICL8212 in <16.5V systems - enables drop-in upgrade with lower IQ and tighter reference tolerance |
| Stable over temperature | Threshold drift ≤±200ppm/°C - maintains detection accuracy across 0°C–70°C ambient without calibration |
Applications
| Logic-Supply Undervoltage Detection | Overvoltage Fault Monitoring |
|---|---|
Use Scenario: Monitoring a 5.0V nominal logic supply to assert reset before voltage drops below 4.5V minimum spec. IC Role / Device Role / Timing Role: Voltage monitor providing TTL/CMOS-compatible reset signal with hysteresis to prevent chatter during brownout recovery. Use Value: Enables deterministic μP reset at precisely defined 4.5V threshold using only three 1% resistors - no potentiometer or calibration required. | Use Scenario: Detecting overvoltage events on a 12V automotive subsystem rail caused by alternator surge or load dump. IC Role / Device Role / Timing Role: Overvoltage protector triggering shutdown circuitry within 250µs of excursion beyond safe limit. Use Value: Delivers 35mA sink current to directly drive a protection MOSFET gate - eliminating external driver stage and reducing BOM count. |
| Battery-Backup Switchover | Microprocessor Power-Fail Warning |
Use Scenario: Initiating backup power transfer when main 3.3V supply falls below 3.0V in a real-time clock module. IC Role / Device Role / Timing Role: Threshold detector generating early warning signal to initiate controlled data save and switchover sequence. Use Value: 5µA quiescent current extends primary battery life by >10 years in always-on backup mode - critical for long-life IoT nodes. | Use Scenario: Alerting a Cortex-M4 microcontroller of imminent power loss during AC mains interruption in smart meter design. IC Role / Device Role / Timing Role: Power-fail supervisor asserting NMI interrupt via open-drain output to trigger last-chance data flush and safe shutdown. Use Value: ±40mV threshold accuracy ensures consistent fail-detection timing across production units - eliminating field failures due to marginal trip points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8211CSA+T | Current-limited 7mA output; activates when THRESH < 1.15V (undervoltage mode) | Suitable for undervoltage-only detection where output current limiting is required for LED drive or fault isolation | Select MAX8211CSA+T when designing for low-current, undervoltage-only supervision with built-in current limiting |
| TLV809EC26DBZR | Fixed 2.63V threshold; no hysteresis output; 0.5µA IQ; SOT-23-3 package | Compact, single-threshold solution for space-constrained applications without programmability or hysteresis needs | Select TLV809EC26DBZR when fixed threshold, ultra-low IQ, and minimal footprint outweigh programmability and hysteresis flexibility |
Compared with MAX8211CSA+T and TLV809EC26DBZR, the MAX8212CSA+T uniquely combines programmable overvoltage trip, high-output-current capability, and dedicated hysteresis output - making it optimal for robust, adaptable power-monitoring circuits where external component count and detection flexibility are critical.
Availability
MAX8212CSA+T is available at Aetrix Electronics and suitable for microprocessor voltage monitoring, battery-backup switchover, and overvoltage fault monitoring requiring stable component supply, long-term manufacturability, and commercial-temperature performance.
Supply support for MAX8212CSA+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 MAX8212CSA+T belongs to the MAX8211/MAX8212 family of programmable voltage monitors designed specifically for reliable, low-power power-supply supervision in microprocessor-based systems where precise, flexible trip-point configuration is essential.
FAQ
What is the correct activation polarity for the MAX8212CSA+T THRESH pin?
The MAX8212CSA+T activates its open-drain OUT transistor when the voltage applied to the THRESH pin exceeds the internal 1.15V bandgap reference - making it inherently suited for overvoltage detection. This contrasts with the MAX8211CSA+T, which triggers when THRESH falls below 1.15V. The MAX8212CSA+T's high-side trip behavior eliminates the need for external inverting circuitry in overvoltage monitoring applications.
Does the MAX8212CSA+T provide internal current limiting on its OUT pin?
No, the MAX8212CSA+T does not include internal current limiting on its OUT pin. Unlike the MAX8211CSA+T (which limits sink current to 7mA), the MAX8212CSA+T can deliver up to 35mA typical sink current. System designers must ensure external load conditions do not exceed 50mA and that total power dissipation remains within SO-8 package limits - especially at elevated supply voltages.
How is hysteresis implemented using the HYST pin on the MAX8212CSA+T?
The HYST pin on the MAX8212CSA+T is an open-drain p-channel output that sources current when the THRESH voltage exceeds 1.15V. By connecting HYST through resistor R3 to the THRESH divider node, positive feedback raises the effective trip threshold during rising input transitions - creating a programmable dead-band that prevents output oscillation near the trip point. Typical hysteresis values range from 20mV to 100mV depending on R3 selection.
Can the MAX8212CSA+T replace an ICL8212 in existing designs?
Yes, the MAX8212CSA+T is specified as a plug-in replacement for the ICL8212 in applications where the supply voltage remains below 16.5V. It matches the ICL8212's pinout, functional behavior, and SO-8 package, while improving quiescent current (5µA vs. ~100µA), reference accuracy (±40mV vs. ±100mV), and hysteresis output drive (10mA vs. 21µA). However, stability in closed-loop zener applications may require compensation review due to higher gain.
What is the maximum operating supply voltage for the MAX8212CSA+T?
The MAX8212CSA+T has a guaranteed operating supply voltage range of 2.0V to 16.5V across 0°C to +70°C. Its absolute maximum rating is 18V, but operation above 16.5V is not characterized and risks parametric deviation or reliability degradation. For systems with transient overvoltages exceeding 16.5V, external clamping or regulation is recommended before applying voltage to the V+ pin of the MAX8212CSA+T.
MAX8212CSA+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:
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX8212CSA+T FAQ
1.How can I place an order for MAX8212CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8212CSA+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 MAX8212CSA+T reliable?
The price and inventory of MAX8212CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8212CSA+T is usually 5 days.
3.What payment methods are accepted for MAX8212CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8212CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8212CSA+T?
MAX8212CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8212CSA+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 MAX8212CSA+T?
For technical support, including MAX8212CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8212CSA+T requirements.
6.How does Aetrix verify that MAX8212CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX8212CSA+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 MAX8212CSA+T meets industry standards.
7.What is the process for return or replacement of MAX8212CSA+T?
All MAX8212CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8212CSA+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 MAX8212CSA+T part is unused and in its original packaging.
Return procedure for MAX8212CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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