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Analog Devices Inc./Maxim Integrated MAX6711MEXS+T
- Part No.:
- MAX6711MEXS+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6711MEXS+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,547
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Product details
Overview
MAX6711MEXS+T from Maxim Integrated is a precision microprocessor supervisory circuit with push-pull active-low RESET output, designed for power supply monitoring in +3.3V digital systems. It provides 4.38V reset threshold (±0.05V over -40°C to +125°C), 140ms minimum reset timeout, and 12µA supply current at VCC = 3.3V, enabling reliable brownout detection in portable battery-powered equipment.
For engineers reviewing the MAX6711MEXS+T datasheet, MAX6711MEXS+T pinout, MAX6711MEXS+T application, or MAX6711MEXS+T equivalent, key selection criteria include reset threshold accuracy (±1.1% at +25°C), guaranteed reset validity down to VCC = +1V, manual reset input with internal 20kΩ pull-up, and SC70-4 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6711MEXS+T integrates a precision voltage comparator with temperature-compensated reference (30ppm/°C tempco) and a monostable timer to generate a minimum 140ms reset pulse after VCC rises above its 4.38V threshold. Its push-pull output drives CMOS/TTL logic directly without external pull-up components.
It features glitch-immune manual reset input (100ns immunity), MR-to-RESET delay of 200ns, and operates across full industrial temperature range (-40°C to +125°C) with supply voltage range 1.2V to 5.5V. Reset assertion remains valid even as VCC decays to +1V, ensuring deterministic µP initialization during power-down sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V ±0.05V (typical at +25°C); ensures reliable detection of +3.3V supply brownout before critical logic failure |
| Reset Timeout | 140ms min after VCC rise; guarantees sufficient µP reset hold time for full internal register initialization |
| Supply Current | 12µA at VCC = 3.3V, TA = -40°C to +85°C; enables multi-year battery life in portable instrumentation |
| Operating Temp | -40°C to +125°C; supports deployment in automotive engine control modules and industrial PLCs |
| VCC Range | 1.2V to 5.5V; allows use with legacy +5V, modern +3.3V/+3.0V, and low-voltage +2.5V systems |
| Reset Output Type | Active-low push-pull; eliminates need for external pull-up resistor and simplifies interface to µP reset pins |
| MR Input | Internal 20kΩ pull-up; enables momentary switch connection without external components or debounce circuitry |
Pinout & Package
MAX6711MEXS+T is housed in a 4-pin SC70 package (outline X4-1, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, suitable for high-density PCB layouts in handheld devices.
| 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 accuracy |
| 2 RESET | Active-low push-pull reset output | Drives µP reset pin low during power-up/brownout; sinks 1.2mA at VCC = VTHmin, ensuring TTL/CMOS compatibility |
| 3 MR | Manual reset input | Active-low input with internal 20kΩ pull-up; asserts reset when pulled to GND; 1µs minimum pulse width required |
| 4 VCC | Supply voltage input | Power source for internal comparator and timer; accepts 1.2V–5.5V; bypass capacitor recommended at pin |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.38V threshold | ±0.05V tolerance over full temperature range ensures consistent brownout detection across operating environments |
| 140ms minimum reset pulse | Guarantees µP reset hold time exceeds typical boot ROM execution latency in ARM Cortex-M0/M3 systems |
| 12µA supply current | Reduces quiescent power in always-on monitoring circuits, extending battery runtime in IoT sensor nodes |
| VCC = +1V reset validity | Maintains defined logic state on RESET output down to near-undervoltage condition, preventing spurious µP wake-up |
| MR glitch immunity | 100ns noise rejection prevents false resets from ESD or switching noise on manual reset lines |
Applications
| Portable/Battery-Powered Equipment | Critical µP and µC Power Monitoring |
|---|---|
Use Scenario: Handheld medical diagnostic device powered by single Li-ion cell with dynamic load switching. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low reset to ARM Cortex-M4 MCU during battery voltage sag below 3.2V. Use Value: Prevents corrupted memory writes and firmware lockup by guaranteeing 140ms reset pulse while VCC recovers from transient load drop. |
Use Scenario: Industrial programmable logic controller requiring fail-safe restart after AC mains interruption. IC Role / Device Role / Timing Role: Primary power monitor generating reset signal when 3.3V auxiliary rail drops below 4.38V threshold. Use Value: Ensures deterministic state recovery by maintaining reset assertion until VCC stabilizes above threshold plus 140ms timeout. |
| Computers | Intelligent Instruments |
Use Scenario: Embedded PC/104 module in ruggedized data acquisition system with wide ambient temperature swings. IC Role / Device Role / Timing Role: Voltage supervisor providing reset to x86-compatible processor during cold-start at -40°C. Use Value: Delivers accurate 4.38V threshold with only 30ppm/°C drift, eliminating false resets caused by thermal coefficient mismatch. |
Use Scenario: Portable oscilloscope with FPGA-based signal processing and real-time display subsystem. IC Role / Device Role / Timing Role: System-level reset coordinator asserting synchronized reset to FPGA, ADC, and display controller. Use Value: Push-pull output drives multiple loads simultaneously without external buffering, reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6712MEXS+T | Active-high push-pull RESET output; identical threshold (4.38V), timing, and package | Required where host µP or ASIC expects active-high reset assertion instead of active-low | Select MAX6712MEXS+T only when system architecture mandates high-true reset signaling |
| TPS3808G33DBVR | 3.3V fixed threshold (±0.5%), 200ms reset timeout, 1.8µA quiescent current, SOT-23-5 package | Larger footprint, different pinout, lower supply current but looser threshold tolerance (±1.5% vs ±1.1%) | Choose TPS3808G33DBVR for ultra-low-power applications where 0.5% threshold accuracy is sufficient |
Compared with MAX6712MEXS+T, the MAX6711MEXS+T provides complementary logic polarity for direct interface to active-low reset pins; versus TPS3808G33DBVR, it offers tighter threshold accuracy (±1.1% vs ±1.5%) and smaller SC70-4 footprint, critical for miniaturized portable designs.
Availability
MAX6711MEXS+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, critical µP and µC power monitoring, and intelligent instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6711MEXS+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, automotive, communications, and computing markets, with emphasis on reliability and integration.
The MAX6711 series belongs to Maxim's microprocessor supervisory product line, engineered specifically for robust power-monitoring in space-constrained, battery-sensitive, and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6711MEXS+T and how does it vary with temperature?
The MAX6711MEXS+T has a nominal reset threshold of 4.38V at +25°C, with guaranteed limits of 4.31V to 4.45V over -40°C to +85°C and 4.16V to 4.56V over +85°C to +105°C. Its temperature coefficient is 30ppm/°C, meaning threshold drift is less than ±15mV across the full -40°C to +125°C range. This precision ensures consistent brownout detection in systems powered by +3.3V rails.
Does MAX6711MEXS+T require external components for basic operation?
No, MAX6711MEXS+T requires no external components for core supervision functionality. Its internal 20kΩ MR pull-up resistor enables direct switch connection, and the push-pull RESET output drives µP reset inputs without external pull-up. Only a 0.1µF ceramic bypass capacitor on VCC is recommended for transient immunity - no resistors, capacitors, or trimming elements are needed for threshold setting or timing.
How does MAX6711MEXS+T ensure reset validity when VCC drops below 1V?
MAX6711MEXS+T guarantees correct RESET logic state down to VCC = +1V. Below this voltage, the output transitions to high-impedance, but since most µPs are nonfunctional below 1V, this behavior is safe. For applications requiring RESET to remain asserted to ground at VCC = 0V, a 100kΩ external pull-down resistor on the RESET pin ensures deterministic low state - a design detail confirmed in Maxim's application note for MAX6711MEXS+T.
What is the minimum pulse width required on the MR pin to trigger a valid reset with MAX6711MEXS+T?
The MR pin of MAX6711MEXS+T requires a minimum pulse width of 1µs to reliably initiate reset assertion. This specification is verified across -40°C to +125°C and ensures compatibility with fast-switching logic families and microcontroller GPIO outputs. The internal 200ns MR-to-RESET delay means reset becomes active within 200ns after MR falls, and remains asserted for ≥140ms after MR returns high.
Can MAX6711MEXS+T be used with a +2.5V supply, and what is its performance at that voltage?
Yes, MAX6711MEXS+T operates with VCC as low as 1.2V, making it fully compatible with +2.5V systems. At VCC = 2.5V, its reset threshold remains 4.38V - which is invalid for direct monitoring. However, the MAX6711 family includes variant suffixes (e.g., MAX6711ZEXS+T) with 2.32V threshold for +2.5V rails. MAX6711MEXS+T is specifically calibrated for +3.3V systems and must be paired with appropriate voltage rail matching.
MAX6711MEXS+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6711MEXS+T FAQ
1.How can I place an order for MAX6711MEXS+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6711MEXS+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 MAX6711MEXS+T reliable?
The price and inventory of MAX6711MEXS+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6711MEXS+T is usually 5 days.
3.What payment methods are accepted for MAX6711MEXS+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6711MEXS+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6711MEXS+T?
MAX6711MEXS+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6711MEXS+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 MAX6711MEXS+T?
For technical support, including MAX6711MEXS+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6711MEXS+T requirements.
6.How does Aetrix verify that MAX6711MEXS+T is sourced from the original manufacturer or authorized distributors?
All MAX6711MEXS+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 MAX6711MEXS+T meets industry standards.
7.What is the process for return or replacement of MAX6711MEXS+T?
All MAX6711MEXS+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6711MEXS+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 MAX6711MEXS+T part is unused and in its original packaging.
Return procedure for MAX6711MEXS+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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