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Analog Devices Inc./Maxim Integrated MAX8212ESA+T
- Part No.:
- MAX8212ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX8212ESA+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,184
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Product details
Overview
MAX8212ESA+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 to 16.5V supply range. It activates its output when the THRESH pin voltage exceeds 1.15V, enabling precise power-fail warning in embedded microcontroller systems.
For engineers reviewing the MAX8212ESA+T datasheet, MAX8212ESA+T pinout, MAX8212ESA+T application, or MAX8212ESA+T equivalent, this device supports programmable trip-point design via external resistor dividers, offers hysteresis control via HYST pin, delivers high sink current capability without internal limiting, and serves as a low-power drop-in replacement for ICL8212 in industrial and automotive power monitoring circuits.
Technical Context
The MAX8212ESA+T implements a comparator-based voltage detection architecture with a precision 1.15V bandgap reference and an open-drain n-channel output stage that turns ON when THRESH > 1.15V. Its HYST pin provides an open-drain p-channel hysteresis output capable of sourcing up to 10mA, enabling user-defined noise immunity through positive feedback into the resistor divider.
Unlike the current-limited MAX8211, the MAX8212ESA+T has no internal output current limit-typical sink current reaches 35mA at VTH = 1.3V-and requires external current limiting in load paths. Threshold accuracy remains ±40mV over temperature, with −200ppm/°C temperature coefficient and <1mV supply-voltage-induced drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports operation across logic, industrial, and battery-backed supply rails without external regulation. |
| Quiescent Current | 5µA typical - enables multi-year battery life in always-on monitoring applications such as backup supervisors. |
| Threshold Accuracy | ±40mV (±3.5%) at +25°C - ensures reliable trip-point setting without calibration or trimming components. |
| Output Type | Open-drain n-channel - allows wired-OR configuration, level-shifting, and direct interface to µP NMI or reset inputs. |
| Hysteresis Output | Open-drain p-channel, 10mA max - provides configurable hysteresis via external feedback resistor without requiring additional ICs. |
| Threshold Tempco | −200ppm/°C - maintains stable trip voltage across −40°C to +85°C operating range with minimal drift. |
| Switching Delay | ton = 250µs, toff = 3ms - balances fast fault response with noise rejection in noisy power environments. |
Pinout & Package
MAX8212ESA+T is housed in an 8-pin SO (Small Outline) package (S8-2), RoHS-compliant, with exposed pad not electrically connected. Pin 1 is THRESH; pin 2 is HYST; pin 4 is V+; pin 5 is GND; pin 8 is OUT. Pins 3, 6, and 7 are No Connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - THRESH | Comparator input | Voltage sense node; output activates when voltage exceeds 1.15V reference. |
| 2 - HYST | Hysteresis output | Open-drain p-channel output used to inject positive feedback into resistor divider for noise-immune switching. |
| 4 - V+ | Positive supply | Primary power rail input (2.0V–16.5V); powers internal reference and comparator. |
| 5 - GND | Ground reference | Analog and digital ground return; must be low-impedance for accurate threshold sensing. |
| 8 - OUT | Main output | Open-drain n-channel output sinks current when THRESH > 1.15V; requires external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Trip Voltage | Set via two external resistors; enables detection of any supply rail (e.g., 3.3V, 5V, 12V) without changing IC. |
| High-Sink Output Capability | Typically 35mA at VTH = 1.3V - drives LEDs, optocouplers, or reset latches directly without buffer transistors. |
| On-Chip Hysteresis Control | Dedicated HYST pin delivers up to 10mA for precise, adjustable hysteresis - eliminates external op-amp or comparator circuits. |
| Low-Leakage Threshold Input | ITH ≤ 10nA - permits use of high-value (up to 10MΩ) resistor dividers, minimizing system current drain. |
| ICL8212 Drop-In Replacement | Pin-compatible and functionally identical to bipolar ICL8212 in 8-SO footprint - enables direct upgrade to lower power and higher accuracy. |
Applications
| Microcontroller Power-Fail Warning | Battery Backup Switchover |
|---|---|
Use Scenario: Monitoring a 5V system rail to assert NMI before brownout causes µP corruption. IC Role / Device Role / Timing Role: Voltage detector generating early-warning interrupt signal prior to supply collapse. Use Value: Prevents data loss by triggering controlled shutdown or state save within 250µs of overvoltage onset. | Use Scenario: Detecting main supply failure in a dual-rail system (e.g., 5V main + 3.3V backup). IC Role / Device Role / Timing Role: Supervisory switch controller enabling seamless transition to backup battery source. Use Value: Ensures uninterrupted RTC or SRAM retention using only two external resistors and no timing capacitors. |
| Industrial Power-Supply Fault Monitor | Logic-Supply Undervoltage Detection |
Use Scenario: Verifying stability of a 12V industrial PLC power rail under motor-switching transients. IC Role / Device Role / Timing Role: Fault flag generator interfaced to PLC watchdog timer or status LED. Use Value: Rejects sub-millisecond noise spikes via programmable hysteresis while responding to sustained faults in <3ms. | Use Scenario: Detecting when a 5.0V logic supply drops below 4.5V minimum spec in FPGA or ASIC systems. IC Role / Device Role / Timing Role: Low-voltage supervisor asserting reset until supply recovers above hysteresis threshold. Use Value: Guarantees clean reset assertion with 75mV hysteresis, eliminating false triggers from rail ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8212CSA | Same die, 0°C to +70°C temp range, same 8-SO package | Limited to commercial temperature range; unsuitable for extended industrial environments | Select MAX8212ESA+T for designs requiring −40°C to +85°C operation with full specification compliance. |
| TLV809E33DBZR | Fixed 3.3V threshold, no programmability, no HYST pin, 1.6V–6.0V supply range | Only suitable for fixed-rail monitoring; cannot replace MAX8212ESA+T in programmable or hysteresis-critical designs | Choose TLV809E33DBZR only when cost-sensitive, single-rail, non-hysteretic applications justify loss of flexibility. |
Compared with MAX8212CSA and TLV809E33DBZR, the MAX8212ESA+T uniquely combines wide temperature range, full programmability, dedicated hysteresis control, and high-output current-making it the sole option for robust, field-deployable voltage supervision where trip point, noise immunity, and environmental resilience are jointly critical.
Availability
MAX8212ESA+T is available at Aetrix Electronics and suitable for microcontroller power-fail warning, battery backup switchover, and industrial power-supply fault monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX8212ESA+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 MAX8212ESA+T belongs to the MAX8211/MAX8212 family of programmable voltage monitors, designed specifically for reliable, low-power, and field-configurable power-supply supervision in mission-critical embedded systems.
FAQ
What is the key functional difference between MAX8212ESA+T and MAX8211ESA+T?
The MAX8212ESA+T activates its OUT pin when the THRESH voltage exceeds the 1.15V internal reference, while the MAX8211ESA+T activates when THRESH falls below that reference. Additionally, MAX8212ESA+T has no internal output current limit (typically sinks 35mA), whereas MAX8211ESA+T limits sink current to 7mA. Both share identical pinout, package, and hysteresis functionality.
Does MAX8212ESA+T require external components to set the trip voltage?
Yes, MAX8212ESA+T requires two external resistors (R1 and R2) to form a voltage divider from the monitored supply to THRESH, setting the trip point where VTH = 1.15V. A third resistor (R3) is optional and used only when hysteresis is needed, connecting HYST to the divider node.
Can MAX8212ESA+T operate from a 1.8V supply?
No, MAX8212ESA+T has a guaranteed operating supply voltage range of 2.0V to 16.5V. At 1.8V, the internal 1.15V bandgap reference and comparator may not function reliably; operation below 2.0V is outside specification and not characterized.
Is MAX8212ESA+T pin-compatible with the legacy ICL8212?
Yes, MAX8212ESA+T is a plug-in replacement for ICL8212 in 8-SO packages. It matches pin-for-pin (THRESH, HYST, V+, GND, OUT), shares identical footprint and solder pad layout, and operates with the same external circuitry-enabling direct drop-in upgrades with improved accuracy, lower quiescent current, and higher hysteresis drive.
What is the maximum recommended output sink current for MAX8212ESA+T?
Analog Devices specifies that MAX8212ESA+T output current must not exceed 50mA to avoid exceeding absolute maximum ratings. While typical sink current reaches 35mA at VTH = 1.3V, system design must ensure power dissipation stays within 471mW (for SO package at +70°C) and thermal limits are maintained under worst-case conditions.
MAX8212ESA+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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX8212ESA+T FAQ
1.How can I place an order for MAX8212ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8212ESA+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 MAX8212ESA+T reliable?
The price and inventory of MAX8212ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8212ESA+T is usually 5 days.
3.What payment methods are accepted for MAX8212ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8212ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8212ESA+T?
MAX8212ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8212ESA+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 MAX8212ESA+T?
For technical support, including MAX8212ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8212ESA+T requirements.
6.How does Aetrix verify that MAX8212ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX8212ESA+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 MAX8212ESA+T meets industry standards.
7.What is the process for return or replacement of MAX8212ESA+T?
All MAX8212ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8212ESA+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 MAX8212ESA+T part is unused and in its original packaging.
Return procedure for MAX8212ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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