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Analog Devices Inc./Maxim Integrated MAX6827MUT+T
- Part No.:
- MAX6827MUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6827MUT+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,990
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Product details
Overview
MAX6827MUT+T from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory IC in 6-pin SOT23 package, monitoring primary VCC (3.08V threshold) and secondary VCC2 (2.313V threshold), with push-pull active-high RESET output, manual reset input (MR), and 1.6s watchdog timer - used in portable battery-powered equipment for reliable power-up/brownout detection.
For engineers reviewing the MAX6827MUT+T datasheet, MAX6827MUT+T pinout, MAX6827MUT+T application, or MAX6827MUT+T equivalent, key selection criteria include guaranteed reset validity down to VCC = +1.2V, 140ms minimum reset timeout, immunity to negative VCC transients ≤20µs, and factory-trimmed dual-threshold supervision without external components.
Technical Context
The MAX6827MUT+T implements dual independent voltage monitoring: VCC monitored at 3.08V (±3% over –40°C to +125°C), and VCC2 at 2.313V (±3% over same range), both feeding an OR logic gate that triggers reset assertion. Its internal watchdog timer clears on any WDI edge and times out after 1.6s (min 1.12s, max 2.4s over temperature) if no transition occurs.
Reset assertion is synchronized to VCC, MR, or WDI events; the push-pull RESET output drives high during reset (active-high), maintains state for ≥140ms after all conditions clear, and guarantees valid logic levels down to VCC = +1.2V. MR features internal 50kΩ pullup and 100ns glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.08V (±3% over –40°C to +125°C); ensures reliable brownout detection for 3.3V systems |
| VCC2 Reset Threshold | 2.313V (±3% over –40°C to +125°C); factory-trimmed to monitor 2.5V I/O rails or 2.3V auxiliary supplies |
| Reset Timeout Period | 140ms minimum; provides sufficient hold time for µP initialization and memory stabilization |
| Watchdog Timeout | 1.6s nominal (1.12–2.4s over temperature); enables robust software execution monitoring in embedded controllers |
| RESET Output Type | Push-pull active-high; eliminates need for external pullup and supports direct interface to µP reset inputs requiring high-asserted reset |
| Operating Voltage Range | +1.2V to +5.5V (over –40°C to +125°C); allows operation during deep brownout while maintaining reset integrity |
| Supply Current | 30µA max at –40°C to +125°C (VCC = +3.6V); enables multi-year battery life in portable instrumentation |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant lead-free, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull reset output | Drives high during reset condition; sinks 1.2mA at VCC ≥ 3.15V; no external pullup required |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output stage; must be low-impedance |
| 3 - MR | Manual reset input (active-low) | Internal 50kΩ pullup to VCC; asserts reset when pulled low; 100ns glitch rejection prevents false triggers |
| 4 - WDI | Watchdog input | Edge-sensitive; clears 1.6s timer on rising or falling edge; disabled if left floating or three-stated |
| 5 - VCC2 | Secondary supply monitor input | Factory-trimmed comparator input for fixed 2.313V threshold; connects directly to 2.5V rail or similar |
| 6 - VCC | Primary supply monitor input | Monitors main system supply; determines operating voltage window and powers internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneously monitors VCC (3.08V) and VCC2 (2.313V) with separate comparators and hysteresis |
| Guaranteed reset validity down to VCC = +1.2V | Ensures deterministic reset behavior even during severe brownout - critical for automotive and industrial applications |
| No external components required | Eliminates discrete resistors, capacitors, or timing elements; reduces BOM count and PCB area in space-constrained designs |
| Immunity to short negative VCC transients | Withstands ≤20µs glitches down to 100mV below threshold without spurious reset - improves noise resilience in noisy environments |
| 1.6s watchdog timeout with edge-triggered clear | Enables flexible software supervision: any WDI transition (not just toggles) resets timer, supporting diverse firmware architectures |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
|
Use Scenario: Power management in handheld medical monitors with dual Li-ion cells and 3.3V/2.5V subsystems. IC Role / Device Role / Timing Role: Supervises main 3.3V rail (VCC) and 2.5V sensor interface rail (VCC2); asserts active-high RESET to halt MCU during undervoltage. Use Value: Prevents corrupted EEPROM writes and sensor data loss during battery sag by enforcing 140ms reset hold time and validating reset down to VCC = +1.2V. |
Use Scenario: Industrial PLC module with ARM Cortex-M4 and isolated I/O banks powered from separate 3.3V and 2.5V regulators. IC Role / Device Role / Timing Role: Dual-rail supervisor triggering system-wide reset on either rail failure; MR enables field-service reset via front-panel button. Use Value: Eliminates need for two discrete supervisors; 50kΩ internal MR pullup reduces component count and simplifies layout. |
| Intelligent Instruments | Critical µP Monitoring |
|
Use Scenario: Precision digital multimeter with real-time clock, ADC, and display subsystems operating from split 3.3V/2.5V supplies. IC Role / Device Role / Timing Role: Monitors VCC (3.08V) and VCC2 (2.313V); WDI tracks firmware heartbeat to detect lockups in measurement engine. Use Value: 1.6s watchdog timeout aligns with typical measurement cycle duration; edge-triggered WDI clearing supports non-toggling firmware patterns. |
Use Scenario: Avionics data concentrator unit where µP reset integrity is mandated under DO-254 for flight-critical functions. IC Role / Device Role / Timing Role: Primary brownout detector asserting active-high RESET to ARM core; guaranteed operation down to VCC = +1.2V satisfies RTCA/DO-160 lightning-induced transient requirements. Use Value: Factory-trimmed thresholds eliminate calibration overhead; 60ppm/°C tempco ensures stable trip points across –40°C to +125°C operational envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply microprocessor supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6826MUT+T | Same package and pinout, but features active-low push-pull RESET and user-adjustable RESET IN (0.63V threshold) instead of fixed VCC2 monitor | Suitable when system requires active-low reset signaling or monitoring of custom voltages < 3.08V via resistor divider | Select MAX6826MUT+T only if active-low reset polarity or adjustable secondary threshold is required; not drop-in compatible due to RESET polarity and pin function differences |
| MAX6830MUT+T | Identical VCC/VCC2 thresholds and watchdog, but uses active-high push-pull RESET and adds factory-trimmed VCC2 monitor (2.313V), same as MAX6827MUT+T | Functionally identical supervision capability; differs only in threshold suffix (T vs. S) - MAX6830 has 2.93V VCC threshold, not 3.08V | MAX6830MUT+T is not a functional substitute: its VCC threshold is 2.93V, making it unsuitable for 3.3V systems requiring 3.08V trip point; verify threshold suffix match before substitution |
Compared with MAX6826MUT+T and MAX6830MUT+T, the MAX6827MUT+T uniquely combines 3.08V VCC supervision, 2.313V VCC2 supervision, and active-high push-pull RESET in one 6-pin SOT23 device - enabling compact, low-component-count supervision of standard 3.3V/2.5V dual-rail systems without design compromises.
Availability
MAX6827MUT+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, intelligent instruments, and critical µP monitoring requiring stable component supply across extended temperature ranges.
Supply support for MAX6827MUT+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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6826–MAX6831 family was engineered specifically for ultra-low-voltage dual-rail microprocessor supervision in space-constrained, battery-sensitive systems - emphasizing guaranteed operation down to 1.2V, factory-trimmed accuracy, and integrated watchdog functionality.
FAQ
What is the exact VCC reset threshold voltage for MAX6827MUT+T and its temperature stability?
The MAX6827MUT+T has a VCC reset threshold of 3.08V, with ±3% tolerance over the full –40°C to +125°C operating range. At –40°C to +85°C, the specification is 3.00V (min) to 3.15V (max); at –40°C to +125°C, it tightens to 2.97V (min) to 3.17V (max). The reset threshold temperature coefficient is 60ppm/°C, ensuring predictable drift across temperature.
Does MAX6827MUT+T support active-high or active-low reset output, and what are the drive capabilities?
The MAX6827MUT+T features an active-high push-pull RESET output. When asserted (reset active), it drives high with VOH ≥ 0.8 × VCC (tested at ISOURCE = 200µA for VCC ≥ 1.8V). It sources up to 800µA at VCC ≥ 4.75V while maintaining VOH ≥ 0.8 × VCC, eliminating need for external pullup resistors in most µP interfaces.
How does the watchdog timer in MAX6827MUT+T operate, and what is its timeout accuracy?
The MAX6827MUT+T watchdog timer has a nominal timeout of 1.6s, with min/max values of 1.12s and 2.4s over –40°C to +85°C, and 0.80s to 2.60s over –40°C to +125°C. It clears on any rising or falling edge at WDI and begins counting only after reset is deasserted. Pulse width sensitivity is 50ns minimum, supporting robust firmware heartbeat detection.
Can MAX6827MUT+T monitor a secondary voltage other than 2.313V, and what is the role of Pin 5?
No - Pin 5 (VCC2) on MAX6827MUT+T is factory-trimmed exclusively for 2.313V threshold monitoring and cannot be adjusted. It is designed to connect directly to a 2.5V rail or similar fixed supply. For user-adjustable secondary monitoring, select MAX6826/MAX6827/MAX6828 variants with RESET IN (Pin 5) and external resistor divider - but note MAX6827MUT+T does not have RESET IN functionality.
What is the minimum VCC voltage at which MAX6827MUT+T guarantees correct reset output behavior?
The MAX6827MUT+T guarantees correct reset output behavior down to VCC = +1.2V over the full –40°C to +125°C temperature range. This ensures deterministic reset assertion and deassertion during deep brownout conditions, unlike many supervisors that fail below 1.8V. The device remains fully functional and meets all electrical specifications at this level.
MAX6827MUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.38V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6827MUT+T FAQ
1.How can I place an order for MAX6827MUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6827MUT+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 MAX6827MUT+T reliable?
The price and inventory of MAX6827MUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6827MUT+T is usually 5 days.
3.What payment methods are accepted for MAX6827MUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6827MUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6827MUT+T?
MAX6827MUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6827MUT+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 MAX6827MUT+T?
For technical support, including MAX6827MUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6827MUT+T requirements.
6.How does Aetrix verify that MAX6827MUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6827MUT+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 MAX6827MUT+T meets industry standards.
7.What is the process for return or replacement of MAX6827MUT+T?
All MAX6827MUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6827MUT+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 MAX6827MUT+T part is unused and in its original packaging.
Return procedure for MAX6827MUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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