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Analog Devices Inc./Maxim Integrated MAX6712MEXS-T
- Part No.:
- MAX6712MEXS-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6712MEXS-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6712MEXS-T from Maxim Integrated is a microprocessor supervisory circuit with active-high push-pull RESET output, designed to monitor +3.3V power supplies in embedded systems. It provides precision reset threshold of 3.08V (±0.05V), 140ms minimum reset timeout, 12µA supply current at +25°C, and guaranteed reset validity down to VCC = +1V. It is used in critical µP applications requiring reliable power-on and brownout detection.
For engineers reviewing the MAX6712MEXS-T datasheet, MAX6712MEXS-T pinout, MAX6712MEXS-T application, or MAX6712MEXS-T equivalent, key selection considerations include active-high reset logic, SC70-4 package compatibility, manual reset input with internal 20kΩ pull-up, immunity to VCC transients ≤20µs at 100mV overdrive, and operation across –40°C to +125°C.
Technical Context
The MAX6712MEXS-T implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to detect VCC drops below its factory-trimmed 3.08V threshold. Its push-pull output drives high during reset assertion and remains asserted for ≥140ms after VCC recovers - independent of temperature across –40°C to +125°C.
It integrates a debounced manual reset input (MR) with 200ns MR-to-reset delay, 1µs minimum MR pulse width, and 100ns glitch immunity. The device operates with no external components and maintains correct logic state for VCC as low as +1V, enabling robust reset signaling during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.05V at +25°C; ensures reliable detection of +3.3V supply droop before system instability |
| Reset Timeout | 140ms min after VCC rise; guarantees µP initialization completes before release |
| Supply Current | 12µA typical at +25°C; enables use in battery-powered equipment with multi-year runtime |
| Operating Temp | –40°C to +125°C; supports industrial and automotive under-hood environments |
| VCC Range | 1.0V to 5.5V; allows valid reset signaling even during severe brownout down to 1V |
| Output Type | Active-high push-pull; eliminates need for external pull-up and simplifies interface to µP reset inputs |
| MR Input | Internal 20kΩ pull-up; enables direct switch-to-ground connection without external biasing |
Pinout & Package
MAX6712MEXS-T is housed in a 4-pin SC70 package (outline X4-1), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads suitable for high-density PCB layouts and reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for all internal circuitry; must be connected to system ground plane for stable reset threshold |
| 2 RESET | Active-high push-pull output | Drives high during reset assertion; sinks current when low, sources current when high; interfaces directly to µP reset pin |
| 3 MR | Manual reset input | Active-low input with internal 20kΩ pull-up; asserts reset while low and holds reset for ≥140ms after release |
| 4 VCC | Supply voltage input | Monitored +3.3V rail; powers internal comparator and output stage; valid from 1.0V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 3.08V threshold | Factory-trimmed to ±0.05V at +25°C with 30ppm/°C tempco - ensures consistent trip point across full temperature range |
| No external components | Integrates voltage reference, comparator, timer, and push-pull driver - eliminates BOM cost and layout area for discrete reset circuits |
| 140ms reset timeout | Guaranteed minimum duration ensures µP clocks stabilize and firmware initializes before release |
| VCC = +1V reset validity | Output remains functional and logic-correct down to 1V supply - prevents spurious release during deep brownout |
| MR debounce & immunity | 200ns MR-to-reset delay and 100ns glitch rejection eliminate need for external RC filtering or firmware debouncing |
Applications
| Computers | Controllers |
|---|---|
Use Scenario: Embedded control module in industrial PC motherboard monitoring +3.3V core rail. IC Role / Device Role / Timing Role: Supervisory IC asserting active-high reset to x86-compatible processor during power-up and brownout. Use Value: Prevents boot failure by holding reset until +3.3V stabilizes above 3.08V for ≥140ms, with no external timing components required. | Use Scenario: PLC main controller board with real-time deterministic response requirements. IC Role / Device Role / Timing Role: Power supervisor ensuring deterministic reset timing across –40°C to +85°C operating range. Use Value: 30ppm/°C tempco and 140ms timeout guarantee consistent reset window regardless of ambient temperature drift. |
| Intelligent Instruments | Critical µP and µC Power Monitoring |
Use Scenario: Handheld multimeter with lithium coin-cell backup and low-power µC. IC Role / Device Role / Timing Role: Low-current (12µA) supervisor monitoring primary +3.3V rail and enabling graceful shutdown on battery depletion. Use Value: Extends battery life while maintaining reset integrity down to VCC = +1V - critical for data retention during power loss. | Use Scenario: Medical infusion pump controller requiring fail-safe power sequencing. IC Role / Device Role / Timing Role: Primary reset generator for ARM Cortex-M4 MCU, interfacing via active-high push-pull output. Use Value: Eliminates risk of metastability by guaranteeing reset assertion during VCC transients ≤20µs at 100mV overdrive. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6712TEXS-T | Same SC70-4 package and active-high push-pull output, but 3.08V threshold trimmed for +3.3V supply (identical spec) | No functional difference; "T" and "M" suffixes both denote 3.08V threshold per Selector Guide | Select MAX6712TEXS-T only if ordering documentation requires "T" designation; electrically identical to MAX6712MEXS-T |
| TPS3808G30DBVR | Active-high open-drain output (requires external pull-up), 3.0V threshold, 200ms reset timeout, 1.8µA quiescent current | Lower supply current but requires pull-up resistor; longer timeout may delay system startup | Choose TPS3808G30DBVR only when ultra-low current dominates design priority and pull-up resistor placement is acceptable |
Compared with MAX6712MEXS-T, MAX6712TEXS-T is functionally identical with identical electrical specs and packaging, while TPS3808G30DBVR trades push-pull simplicity for lower current and longer timeout - requiring layout changes and careful timing analysis.
Availability
MAX6712MEXS-T is available at Aetrix Electronics and suitable for industrial controllers, portable instrumentation, medical embedded systems, and critical µP power monitoring requiring stable component supply across extended temperature ranges.
Supply support for MAX6712MEXS-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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for industrial, computing, communications, and consumer applications.
The MAX671x family delivers highly accurate, low-power microprocessor supervisory circuits targeting space-constrained, thermally demanding embedded systems requiring guaranteed reset behavior across –40°C to +125°C.
FAQ
What is the reset threshold voltage of the MAX6712MEXS-T and how is it specified over temperature?
The MAX6712MEXS-T has a factory-trimmed reset threshold of 3.08V at +25°C, with tolerance of ±0.05V. Over the full operating range of –40°C to +125°C, the threshold varies by ±0.15V maximum (3.00V to 3.15V), supported by a 30ppm/°C temperature coefficient. This specification ensures predictable brownout detection for +3.3V systems across harsh thermal environments without external calibration.
Does the MAX6712MEXS-T require external components to operate?
No, the MAX6712MEXS-T requires no external components for basic operation. It integrates a precision voltage reference, comparator, reset timer, and push-pull output driver. The manual reset input (MR) includes an internal 20kΩ pull-up resistor, allowing direct connection of a momentary switch to ground without external biasing. Only standard VCC bypass capacitance (e.g., 0.1µF ceramic) is recommended per best practices.
What is the function of the MR pin on the MAX6712MEXS-T and what are its electrical characteristics?
The MR pin on the MAX6712MEXS-T is an active-low manual reset input that asserts the RESET output when pulled low. It features an internal 20kΩ (typical) pull-up resistor, accepts TTL/CMOS logic levels, and tolerates input voltages from –0.3V to (VCC + 0.3V). Its minimum pulse width is 1µs, with 100ns glitch immunity and 200ns propagation delay to RESET assertion - enabling clean, noise-resistant manual reset without external filtering.
How does the MAX6712MEXS-T behave when VCC falls below 1V?
The MAX6712MEXS-T guarantees correct logic state of its active-high RESET output down to VCC = +1V. Below 1V, the output stage ceases to source or sink current and becomes high-impedance. However, since most µPs are nonfunctional below 1V, this behavior is intentional and safe. For applications requiring forced low-state below 1V, a 100kΩ pull-down resistor on RESET is recommended - a design detail explicitly validated in Maxim's application note for MAX6712MEXS-T.
What package type and dimensions does the MAX6712MEXS-T use, and is it RoHS-compliant?
The MAX6712MEXS-T uses a 4-pin SC70 package (outline X4-1), measuring 2.0mm × 2.1mm × 0.95mm with gull-wing leads. It is RoHS-compliant and halogen-free, with lead-free finish indicated by the "+T" suffix variant (MAX6712MEXS+T). The "-T" suffix denotes standard lead-free packaging meeting JEDEC J-STD-020 moisture sensitivity level 1 specifications.
MAX6712MEXS-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6712MEXS-T FAQ
1.How can I place an order for MAX6712MEXS-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6712MEXS-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 MAX6712MEXS-T reliable?
The price and inventory of MAX6712MEXS-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6712MEXS-T is usually 5 days.
3.What payment methods are accepted for MAX6712MEXS-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6712MEXS-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6712MEXS-T?
MAX6712MEXS-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6712MEXS-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 MAX6712MEXS-T?
For technical support, including MAX6712MEXS-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6712MEXS-T requirements.
6.How does Aetrix verify that MAX6712MEXS-T is sourced from the original manufacturer or authorized distributors?
All MAX6712MEXS-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 MAX6712MEXS-T meets industry standards.
7.What is the process for return or replacement of MAX6712MEXS-T?
All MAX6712MEXS-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6712MEXS-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 MAX6712MEXS-T part is unused and in its original packaging.
Return procedure for MAX6712MEXS-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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