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Analog Devices Inc./Maxim Integrated MAX8212CSA+
- Part No.:
- MAX8212CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX8212CSA+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:791
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Product details
Overview
MAX8212CSA+ 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 with no current limit, ±40mV threshold accuracy (±3.5%), 5µA quiescent current, and operates from 2.0V to 16.5V supply voltage - used in battery-backup switching and undervoltage/overvoltage detection circuits.
For engineers reviewing the MAX8212CSA+ datasheet, MAX8212CSA+ pinout, MAX8212CSA+ application, or MAX8212CSA+ equivalent, key selection criteria include programmable trip voltage via external resistors, hysteresis output for noise immunity, high-output-current capability (35mA typical), and SO-8 package compatibility with legacy ICL8212 designs.
Technical Context
The MAX8212CSA+ implements a comparator-based voltage monitoring architecture with a precision 1.15V bandgap reference and dual open-drain outputs: OUT (n-channel) activates when THRESH > 1.15V, while HYST (p-channel) provides positive feedback for hysteresis control. Its low-leakage THRESH input (≤10nA) enables high-impedance resistor networks for precise trip-point setting without loading error.
Unlike the current-limited MAX8211, the MAX8212CSA+ output stage delivers up to 35mA sink current at VTH = 1.3V and exhibits 0.17V typical saturation voltage at 2mA load - enabling direct interface with optocouplers, logic inputs, or small-signal relays without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports wide-rail industrial and battery-powered systems without external regulation |
| Quiescent Current | 5µA typical - enables multi-year operation in coin-cell–powered backup monitors |
| Threshold Accuracy | ±40mV (±3.5%) at +25°C - ensures reliable trip-point repeatability across production batches |
| Output Sink Current | 35mA typical at VTH = 1.3V - drives medium-load logic or optocoupler LEDs directly |
| Hysteresis Output | 10mA max at VHYS = 0V - supplies sufficient current for robust positive feedback in noisy environments |
| Threshold Tempco | -200ppm/°C - maintains stable trip voltage over -40°C to +85°C operating range |
| Input Leakage (THRESH) | ≤10nA at +25°C - permits use of >10MΩ resistor dividers without significant offset error |
Pinout & Package
MAX8212CSA+ is housed in an 8-pin SO (Small Outline) package per package code S8-2, RoHS-compliant, with standard 1.27mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - THRESH | Comparator input | Voltage divider node; triggers OUT when >1.15V; ≤10nA input leakage enables high-Z sensing |
| 2 - HYST | Hysteresis output | Open-drain p-channel; supplies positive feedback current to THRESH node for noise immunity |
| 3 - N.C. | No connect | Internally unconnected; must remain floating or grounded per layout best practice |
| 4 - V+ | Positive supply | Primary power rail input; supports 2.0V–16.5V; powers internal reference and comparator |
| 5 - GND | Ground reference | Analog and digital ground return; requires low-impedance connection to minimize noise coupling |
| 6 - N.C. | No connect | Internally unconnected; must remain floating or grounded per layout best practice |
| 7 - N.C. | No connect | Internally unconnected; must remain floating or grounded per layout best practice |
| 8 - OUT | Main output | Open-drain n-channel; sinks up to 35mA; active-high logic when pulled externally |
Key Features
| Feature | Design Value |
|---|---|
| Programmable trip voltage | Set via two external resistors; enables custom undervoltage/overvoltage thresholds from 1.15V to >16V |
| On-board hysteresis output | HYST pin delivers up to 10mA for configurable hysteresis without external op-amps or comparators |
| Plug-in replacement for ICL8212 | Same pinout and function as bipolar ICL8212; reduces supply current by >95% and improves reference stability |
| Low-threshold-input leakage | ≤10nA THRESH input current allows >10MΩ resistor networks, minimizing system power drain |
| Wide temperature operation | Specified from -40°C to +85°C (E-grade); maintains ±40mV threshold accuracy across full range |
Applications
| Battery-Backup Switching | Power-Supply Fault Monitoring |
|---|---|
Use Scenario: Detects main supply collapse in systems with secondary battery backup (e.g., real-time clocks, SRAM keep-alive). IC Role / Device Role / Timing Role: Voltage monitor asserting reset or enable signal to switch to backup rail before brownout. Use Value: 5µA quiescent current extends battery life; ±40mV threshold accuracy prevents false switchover during transient dips. | Use Scenario: Monitors DC output of AC/DC or DC/DC converters in industrial PLCs and telecom power shelves. IC Role / Device Role / Timing Role: Fault detector triggering shutdown or alarm when output deviates beyond safe window. Use Value: Programmable trip point accommodates multiple rail voltages (3.3V, 5V, 12V); hysteresis eliminates chatter during marginal conditions. |
| Microprocessor Voltage Monitoring | Low-Battery Detection |
Use Scenario: Embedded controller systems requiring early warning of supply sag prior to CPU reset assertion. IC Role / Device Role / Timing Role: Power-fail warning generator feeding NMI or dedicated reset input on μP. Use Value: 40µs turn-on delay ensures fast response; open-drain OUT interfaces directly with μP reset logic. | Use Scenario: Portable medical devices or handheld instruments detecting end-of-charge in Li-ion or alkaline cells. IC Role / Device Role / Timing Role: Threshold comparator signaling low battery condition to firmware or LED driver. Use Value: 2.0V minimum supply allows operation down to single-cell cutoff; THRESH input tolerates up to V+ + 0.5V for flexible sensing topologies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8212ESA+ | Same functionality and pinout; extended temperature range (-40°C to +85°C) vs. MAX8212CSA+ (0°C to +70°C) | Suitable for industrial environments with wider ambient swings; identical electrical specs otherwise | Select MAX8212ESA+ for deployments outside commercial temperature range |
| TLV809E33DBZR | Dedicated 3.3V fixed-threshold supervisor; no programmability, no hysteresis output, 1.6V min supply | Only fits fixed 3.3V rail monitoring; lacks resistor-programmable flexibility and HYST feedback capability | Choose only if trip point is fixed and hysteresis is implemented externally |
Compared with MAX8212ESA+ and TLV809E33DBZR, the MAX8212CSA+ uniquely combines programmable trip voltage, integrated hysteresis output, and commercial-temperature SO-8 packaging - making it optimal for cost-sensitive, space-constrained designs requiring design flexibility without thermal derating.
Availability
MAX8212CSA+ is available at Aetrix Electronics and suitable for battery-backup switching, power-supply fault monitoring, and microprocessor voltage monitoring requiring stable component supply and RoHS-compliant SO-8 packaging.
Supply support for MAX8212CSA+ 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+ belongs to the MAX821x family of micropower voltage supervisors, engineered for precision, low-power, and programmable supply monitoring in embedded and portable systems.
FAQ
What is the primary function of the MAX8212CSA+?
The MAX8212CSA+ is a programmable voltage detector that monitors a DC supply rail and asserts an open-drain output when the sensed voltage exceeds a user-defined threshold. Its core function is to provide overvoltage or undervoltage detection with hysteresis support, commonly used for power-fail warning and system supervision. The MAX8212CSA+ uses an internal 1.15V reference and external resistors to set the trip point, and its HYST pin enables noise-immune switching.
How does the MAX8212CSA+ differ from the MAX8211CSA+?
The MAX8212CSA+ activates its OUT pin when the THRESH voltage exceeds 1.15V, whereas the MAX8211CSA+ activates when THRESH falls below 1.15V. Additionally, the MAX8212CSA+ output is not current-limited and can sink up to 35mA, while the MAX8211CSA+ limits sink current to 7mA. Both share the same 5µA quiescent current, ±40mV threshold accuracy, and SO-8 package - but their trip polarity and drive strength are fundamentally different.
Can the MAX8212CSA+ be used for both overvoltage and undervoltage detection?
Yes - the MAX8212CSA+ supports both configurations via external resistor network topology. For overvoltage detection, the THRESH pin connects to a voltage divider from the monitored rail; for undervoltage detection, it connects to a divider referenced to ground. The MAX8212CSA+ itself responds to THRESH > 1.15V in either case, so circuit configuration-not device behavior-determines detection mode.
What is the role of the HYST pin on the MAX8212CSA+?
The HYST pin on the MAX8212CSA+ is an open-drain p-channel output used to inject positive feedback into the THRESH node, creating hysteresis to prevent output oscillation near the trip point. When enabled, it delivers up to 10mA, allowing users to define hysteresis width via resistor R3 in the feedback path - a key feature for reliable operation in electrically noisy environments.
Is the MAX8212CSA+ pin-compatible with the ICL8212?
Yes - the MAX8212CSA+ is explicitly designed as a plug-in replacement for the bipolar ICL8212 in applications where supply voltage remains below 16.5V. It shares identical pinout, terminal functions, and basic logic behavior, while offering improved performance: 5µA vs. ~100µA quiescent current, tighter threshold accuracy, and higher hysteresis output current. No PCB changes are required for drop-in substitution.
MAX8212CSA+ 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:
- 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+ FAQ
1.How can I place an order for MAX8212CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8212CSA+ 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+ reliable?
The price and inventory of MAX8212CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8212CSA+ is usually 5 days.
3.What payment methods are accepted for MAX8212CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8212CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8212CSA+?
MAX8212CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8212CSA+ 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+?
For technical support, including MAX8212CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8212CSA+ requirements.
6.How does Aetrix verify that MAX8212CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX8212CSA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX8212CSA+?
All MAX8212CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8212CSA+, 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+ part is unused and in its original packaging.
Return procedure for MAX8212CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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