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Analog Devices Inc./Maxim Integrated MAX6827TUT-T
- Part No.:
- MAX6827TUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6827TUT-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6827TUT-T from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring primary VCC (3.08V threshold) and secondary VCC2 (2.313V factory-trimmed), with push-pull active-high RESET output, manual reset input (MR), and 1.6s watchdog timer. It guarantees valid reset operation down to VCC = +1.0V and is used in battery-powered embedded controllers requiring reliable brownout and watchdog protection.
For engineers reviewing the MAX6827TUT-T datasheet, MAX6827TUT-T pinout, MAX6827TUT-T application, or MAX6827TUT-T equivalent, this page delivers verified electrical parameters, exact pin functions, real-world timing behavior (140ms min reset timeout, 200ns MR-to-reset delay), and validated alternative options for multivoltage µP monitoring systems.
Technical Context
The MAX6827TUT-T integrates two independent voltage monitors: one for primary supply (VCC) with fixed 3.08V threshold (T suffix), and one for secondary supply (VCC2) with factory-trimmed 2.313V threshold (Z suffix). Its push-pull active-high RESET output drives high during normal operation and asserts low only during reset events.
It features a 50kΩ internal pullup on MR, supports CMOS-level manual reset triggering, and uses an internal 1.6s watchdog timer cleared by WDI edges - not level - ensuring robust software execution monitoring. Reset remains asserted for ≥140ms after all monitored voltages recover and MR returns high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.08V (min 2.97V, max 3.17V at -40°C to +125°C); sets brownout detection point for primary supply |
| VCC2 Reset Threshold | 2.313V (min 2.238V, max 2.388V at -40°C to +125°C); factory-trimmed for secondary supply monitoring |
| Reset Timeout Period | 140ms minimum; ensures µP completes power stabilization before release |
| Watchdog Timeout Period | 1.6s nominal (0.80s–2.60s over temperature); detects stalled firmware execution |
| RESET Output Type | Push-pull active-high; eliminates external pullup and supports direct interface to µP reset inputs |
| Operating Voltage Range | +1.2V to +5.5V on VCC; enables use with 1.8V, 2.5V, 3.3V, and 5V systems |
| Guaranteed Reset Validity | Down to VCC = +1.0V; ensures deterministic reset assertion during deep brownout |
Pinout & Package
MAX6827TUT-T is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), 2.9mm × 1.6mm × 1.1mm, surface-mount, lead-free compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; drives high normally, pulls low during reset assertion |
| 2 | GND | Ground reference for all internal comparators and logic |
| 3 | MR | Manual reset input (active-low); internally pulled up to VCC with 50kΩ resistor |
| 4 | WDI | Watchdog input; edge-sensitive (rising/falling); resets internal 1.6s timer on transition |
| 5 | VCC2 | Secondary supply monitor input; factory-trimmed for 2.313V threshold detection |
| 6 | VCC | Primary supply input and power rail; powers internal circuitry and sets VCC threshold (3.08V) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC (3.08V) and VCC2 (2.313V) without external components |
| Edge-triggered watchdog timer | 1.6s timeout cleared only by WDI transitions - prevents false clears during stuck loops |
| Guaranteed operation at 1.0V VCC | Ensures reset remains valid through severe brownout, critical for Li-ion battery discharge profiles |
| No external timing components | Internal RC-based reset timeout and watchdog timers eliminate BOM cost and layout area |
| Immunity to short VCC transients | Withstands ≤20µs negative glitches at 100mV below threshold - avoids spurious resets in noisy environments |
Applications
| Portable Power Management | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring 3.3V main rail and 2.5V I/O rail in handheld medical diagnostic device powered by single-cell Li-ion. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting active-high RESET to ARM Cortex-M4 during brownout or software hang. Use Value: Prevents corrupted EEPROM writes and sensor data loss by guaranteeing ≥140ms reset hold time while battery voltage recovers from pulse load. |
Use Scenario: Supervising 5V MCU supply and 3.3V CAN transceiver supply in automotive door module exposed to load-dump transients. IC Role / Device Role / Timing Role: Primary VCC monitor (3.08V) and secondary VCC2 monitor (2.313V) provide independent fault detection for safety-critical subsystems. Use Value: Factory-trimmed thresholds eliminate calibration overhead; 1.0V VCC validity ensures reset integrity during cold-crank conditions. |
| Industrial PLC I/O Card | Battery-Powered IoT Sensor Node |
Use Scenario: Ensuring reliable startup and runtime supervision of dual-rail FPGA configuration (1.2V core, 3.3V I/O) in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Push-pull active-high RESET directly interfaces FPGA's PROG_B pin without external pullup, simplifying PCB routing. Use Value: Manual reset via MR allows field-service recovery; watchdog prevents lockup during Modbus RTU communication errors. |
Use Scenario: Long-life coin-cell-powered environmental sensor using ultra-low-power MSP430 with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 1.8V system rail and 2.313V RF section supply; watchdog enforces firmware watchdog window compliance. Use Value: 30µA typical ICC at 3.3V enables >10-year battery life; 140ms reset timeout aligns with MSP430's BOR recovery timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6826TUT-T | Active-low push-pull RESET output; identical VCC/VCC2 thresholds and timing | Requires inverted reset logic on µP side; incompatible with active-high reset pins | Select when target µP accepts active-low reset and board layout already accommodates pullup-free interface |
| TPS3808G30DBVR | Single-supply supervisor (3.0V threshold only); no VCC2 monitor or watchdog input | Lacks secondary supply monitoring and software watchdog capability | Choose only if secondary rail supervision and firmware watchdog are not required; lower cost but reduced functionality |
Compared with MAX6827TUT-T, MAX6826TUT-T provides identical dual-monitoring and watchdog functionality but requires active-low reset handling, while TPS3808G30DBVR reduces feature set to single-rail supervision - making MAX6827TUT-T the only option supporting both VCC2 monitoring and edge-triggered watchdog in SOT23-6.
Availability
MAX6827TUT-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, automotive systems, and industrial embedded controllers requiring stable component supply across extended temperature ranges (-40°C to +125°C).
Supply support for MAX6827TUT-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 power, sensing, and interface applications, with emphasis on reliability and integration for harsh environments.
The MAX6826–MAX6831 family was engineered specifically for multivoltage microprocessor systems needing compact, dual-rail supervision with manual reset and watchdog - targeting space-constrained, battery-sensitive, and automotive-grade applications.
FAQ
What is the reset output polarity and drive type of the MAX6827TUT-T?
The MAX6827TUT-T features an active-high push-pull RESET output. Unlike open-drain variants, it actively drives high during normal operation and pulls low during reset assertion - eliminating the need for an external pullup resistor and enabling direct connection to µP reset inputs that require active-high signaling. This behavior is confirmed in the Pin Description table and Functional Diagram for MAX6827.
What are the exact VCC and VCC2 reset thresholds for MAX6827TUT-T?
The MAX6827TUT-T has a VCC reset threshold of 3.08V (with min/max tolerances of 2.97V/3.17V over -40°C to +125°C) and a VCC2 threshold of 2.313V (2.238V/2.388V over temperature), per the Standard Versions Table and Electrical Characteristics. These values correspond to the "T" (VCC) and "Z" (VCC2) suffixes in the part number.
Does MAX6827TUT-T support watchdog functionality, and how is it triggered?
Yes, MAX6827TUT-T includes a 1.6s nominal watchdog timer triggered by lack of transitions on the WDI pin. The timer resets only on rising or falling edges - not level - preventing false clears during software hangs. If WDI remains static beyond the timeout period, RESET asserts for ≥140ms. This edge-sensitive behavior is explicitly defined in the Watchdog Input section and Figure 4 timing diagram.
Can MAX6827TUT-T monitor a secondary voltage lower than 2.313V?
No - MAX6827TUT-T uses the factory-trimmed VCC2 input (pin 5), fixed at 2.313V threshold. To monitor voltages below 2.313V (e.g., 1.8V or 1.2V rails), select MAX6826/MAX6827/MAX6828 variants with RESET IN (RSTIN) pin, which supports user-adjustable thresholds down to 0.63V via external resistor divider. The MAX6827TUT-T does not include RSTIN functionality.
What is the minimum VCC voltage at which MAX6827TUT-T guarantees correct reset assertion?
MAX6827TUT-T guarantees correct reset assertion and output state validity down to VCC = +1.0V, as stated in the General Description and Absolute Maximum Ratings. This ensures deterministic behavior during deep brownout conditions common in battery-powered systems nearing end-of-discharge, unlike many supervisors that fail below 1.2V.
MAX6827TUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 3.08V, 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-23-6
MAX6827TUT-T FAQ
1.How can I place an order for MAX6827TUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6827TUT-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 MAX6827TUT-T reliable?
The price and inventory of MAX6827TUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6827TUT-T is usually 5 days.
3.What payment methods are accepted for MAX6827TUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6827TUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6827TUT-T?
MAX6827TUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6827TUT-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 MAX6827TUT-T?
For technical support, including MAX6827TUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6827TUT-T requirements.
6.How does Aetrix verify that MAX6827TUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6827TUT-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 MAX6827TUT-T meets industry standards.
7.What is the process for return or replacement of MAX6827TUT-T?
All MAX6827TUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6827TUT-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 MAX6827TUT-T part is unused and in its original packaging.
Return procedure for MAX6827TUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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