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Analog Devices Inc./Maxim Integrated MAX6824MUK+T
- Part No.:
- MAX6824MUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6824MUK+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6824MUK+T from Maxim Integrated is a low-voltage microprocessor supervisory circuit in 5-pin SOT23 package, combining voltage monitoring (4.38V threshold), watchdog timer (1.6s timeout), and dual push-pull reset outputs (RESET and RESET). It asserts reset during power-up, brownout, or software hang, with guaranteed reset validity down to VCC = +1.0V, used in embedded controllers and portable equipment.
For engineers reviewing the MAX6824MUK+T datasheet, MAX6824MUK+T pinout, MAX6824MUK+T application, or MAX6824MUK+T equivalent, this page delivers verified functional identity, exact pin roles, confirmed reset timing behavior, watchdog interaction logic, and real-world substitution guidance for industrial and battery-powered designs.
Technical Context
The MAX6824MUK+T implements a dual-output reset architecture: active-low RESET and active-high RESET, both push-pull, enabling direct interface with bidirectional or polarity-sensitive µP reset inputs without external pull resistors. Its internal watchdog timer clears on any WDI edge and times out after 1.6s if no transition occurs.
Voltage monitoring uses a precision bandgap reference with ±1.5% threshold accuracy over –40°C to +125°C and 60ppm/°C temperature coefficient. Reset assertion is guaranteed valid for VCC ≥ +1.0V, and the device remains immune to negative VCC transients ≤20µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V ±1.5% - precisely monitors +4.5V system rails with brownout detection at 4.38V falling edge |
| Reset Timeout Period | 140ms (min) - ensures µP completes power stabilization before release |
| Watchdog Timeout | 1.6s nominal - detects firmware hangs exceeding typical boot or task loop durations |
| Supply Voltage Range | +1.2V to +5.5V - supports operation during deep brownout while maintaining reset integrity |
| Reset Output Type | Dual push-pull (RESET, RESET) - eliminates need for external pull-ups/pull-downs |
| Operating Temperature | –40°C to +125°C - qualified for automotive-grade and industrial embedded environments |
| Quiescent Current | 30µA max (–40°C to +125°C) - enables multi-year battery life in portable applications |
Pinout & Package
Package: 5-pin SOT23-5 (U5-1 outline, land pattern 21-0057), RoHS-compliant, surface-mountable with 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low during VCC undervoltage, MR assert, or watchdog timeout; drives µP reset pin directly |
| 2 | GND | Ground reference for all internal comparators, timers, and output drivers |
| 3 | WDI | Watchdog input - edge-triggered; toggling within 1.6s prevents reset; left floating disables watchdog |
| 4 | RESET (active-high) | Push-pull output asserted high during fault conditions; complements RESET for dual-signaling µPs |
| 5 | VCC | Power supply and monitored rail input; reset threshold derived internally from this pin |
Key Features
| Feature | Design Value |
|---|---|
| Dual push-pull reset outputs | Enables simultaneous active-low and active-high reset signaling without external components or level-shifting |
| 1.6s watchdog timeout | Matches typical firmware initialization and task execution windows, detecting stalled code before system lockup |
| Guaranteed reset validity to VCC = +1.0V | Ensures reliable reset assertion even during severe brownout or battery depletion scenarios |
| No external components required | Integrates voltage reference, timer, debounced logic, and drivers - reduces BOM count and PCB area |
| Immunity to short VCC glitches | Rejects transients ≤20µs at 100mV overdrive, preventing spurious resets in noisy power environments |
Applications
| Set-Top Boxes | Embedded Controllers |
|---|---|
Use Scenario: Power sequencing and firmware crash recovery in digital video receivers subject to unstable AC adapters and ESD events. IC Role / Device Role / Timing Role: Supervisory IC providing voltage-monitored power-on reset and watchdog-triggered recovery for ARM-based media processors. Use Value: Prevents frozen UI or channel-lock failures by forcing hard reset when software hangs or supply dips below 4.38V. | Use Scenario: Industrial PLC modules requiring deterministic startup and runtime fault containment in harsh electrical environments. IC Role / Device Role / Timing Role: Dual-reset supervisor ensuring µP enters known state at power-up and recovers autonomously from watchdog timeouts. Use Value: Eliminates need for external reset latches or manual reboot, improving MTBF and reducing field service calls. |
| Portable/Battery-Powered Equipment | Intelligent Instruments |
Use Scenario: Handheld test meters powered by single-cell Li-ion batteries experiencing voltage sag under load. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor monitoring battery voltage and asserting reset before brownout-induced data corruption. Use Value: Extends usable battery life by enabling operation down to 1.2V while guaranteeing clean reset at 4.38V threshold. | Use Scenario: Benchtop oscilloscopes and spectrum analyzers requiring stable boot and error recovery during firmware updates. IC Role / Device Role / Timing Role: Dual-output supervisor interfacing with FPGA-configurable reset logic and µP reset pins of mixed polarity. Use Value: Supports both active-low and active-high reset domains on same board, simplifying design reuse across instrument families. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6822MUK+T | Single open-drain RESET output; identical 4.38V threshold and 1.6s watchdog | Lacks active-high RESET; requires external pull-up for µPs needing high-active reset | Select when only one reset polarity is needed and board space allows pull-up resistor |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms reset timeout, no manual reset input, same SOT23-5 package | Missing watchdog timer and dual-reset capability; suited for simpler power-monitor-only use cases | Choose for cost-sensitive designs where watchdog and dual outputs are unnecessary |
Compared with MAX6824MUK+T, MAX6822MUK+T offers identical supervision accuracy and watchdog function but sacrifices dual-output flexibility, while TPS3808G33DBVR reduces feature set to basic voltage monitoring-making MAX6824MUK+T optimal for systems demanding autonomous recovery via dual-reset signaling and watchdog enforcement.
Availability
MAX6824MUK+T is available at Aetrix Electronics and suitable for embedded controllers, portable/battery-powered equipment, and intelligent instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6824MUK+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, and communications applications.
The MAX6821–MAX6825 family targets low-voltage µP supervision in space-constrained systems, delivering integrated voltage monitoring, watchdog, and dual-reset functionality in minimal 5-pin SOT23 footprint.
FAQ
What is the reset threshold voltage of MAX6824MUK+T?
The MAX6824MUK+T has a factory-trimmed reset threshold of 4.38V ±1.5% over –40°C to +125°C, corresponding to the "M" suffix in its part number. This threshold is guaranteed to remain stable with a 60ppm/°C temperature coefficient and provides precise brownout detection for +4.5V system rails. The MAX6824MUK+T asserts reset when VCC falls below this value and holds it for ≥140ms after VCC rises above it.
Does MAX6824MUK+T include a watchdog timer?
Yes, the MAX6824MUK+T includes a watchdog timer with a nominal timeout period of 1.6s. It monitors the WDI pin for edges; if no transition occurs within that interval, it triggers both RESET and RESET outputs for the full reset timeout duration. The timer clears on any WDI edge, MR assertion, or reset activation. Unlike some variants, MAX6824MUK+T lacks a manual reset input but retains full watchdog functionality.
What are the functions of the two reset outputs on MAX6824MUK+T?
The MAX6824MUK+T provides two independent push-pull reset outputs: pin 1 is active-low RESET, and pin 4 is active-high RESET. Both assert simultaneously during VCC undervoltage, watchdog timeout, or (if present) manual reset - though MAX6824MUK+T omits MR. This dual-output architecture allows direct connection to µPs with either reset polarity requirement without external components, supporting flexible system-level reset coordination.
Can MAX6824MUK+T operate with supply voltages below 1.8V?
Yes, the MAX6824MUK+T operates with VCC as low as +1.2V over its full temperature range (–40°C to +125°C), and its reset outputs remain valid down to +1.0V. While its 4.38V threshold targets higher-voltage rails, the device itself functions correctly during brownout recovery and maintains correct reset state integrity even when VCC sags near 1.0V - a key reliability feature for battery-backed or unregulated power systems.
Is MAX6824MUK+T pin-compatible with other devices in the MAX6821–MAX6825 family?
Yes, MAX6824MUK+T shares the identical 5-pin SOT23-5 (U5-1) package and pinout with all members of the MAX6821–MAX6825 family, including MAX6821MUK+T, MAX6822MUK+T, MAX6823MUK+T, and MAX6825MUK+T. Pin assignments - VCC (5), GND (2), WDI (3), RESET (1), RESET (4) - are consistent across the series, enabling drop-in replacement where functional requirements align, such as when upgrading from single-output to dual-output supervision.
MAX6824MUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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 High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6824MUK+T FAQ
1.How can I place an order for MAX6824MUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6824MUK+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 MAX6824MUK+T reliable?
The price and inventory of MAX6824MUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6824MUK+T is usually 5 days.
3.What payment methods are accepted for MAX6824MUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6824MUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6824MUK+T?
MAX6824MUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6824MUK+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 MAX6824MUK+T?
For technical support, including MAX6824MUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6824MUK+T requirements.
6.How does Aetrix verify that MAX6824MUK+T is sourced from the original manufacturer or authorized distributors?
All MAX6824MUK+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 MAX6824MUK+T meets industry standards.
7.What is the process for return or replacement of MAX6824MUK+T?
All MAX6824MUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6824MUK+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 MAX6824MUK+T part is unused and in its original packaging.
Return procedure for MAX6824MUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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