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Analog Devices Inc./Maxim Integrated MAX6824YUK
- Part No.:
- MAX6824YUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6824YUK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,758
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Product details
Overview
MAX6824YUK from Maxim Integrated is a low-voltage microprocessor supervisory IC in SOT23-5 package, combining voltage monitoring (2.19V threshold), watchdog timer (1.6s timeout), and dual push-pull reset outputs (RESET and RESET). It asserts reset during VCC brownout, manual trigger, or watchdog timeout, with guaranteed reset validity down to VCC = +1.0V. Used in embedded controllers and portable equipment for reliable power-up/power-down sequencing.
For engineers reviewing the MAX6824YUK datasheet, MAX6824YUK pinout, MAX6824YUK application, or MAX6824YUK equivalent, this page delivers verified electrical parameters, exact pin functions, real-world use cases, and two confirmed alternative parts - all validated against Maxim's official documentation and ordering guide.
Technical Context
The MAX6824YUK integrates a precision voltage monitor with ±1.5% threshold accuracy at 2.19V over –40°C to +125°C, a 1.6s watchdog timer cleared by WDI edge transitions, and independent push-pull RESET (active-low) and RESET (active-high) outputs. Its internal 50kΩ MR pullup enables direct switch interfacing without external components.
Reset assertion occurs on VCC falling below 2.19V, MR low, or WDI timeout; reset remains asserted for ≥140ms after recovery. The device operates across VCC = +2.1V to +2.75V (per Y-suffix spec), supports glitch-immune MR input (100ns rejection), and guarantees VOL ≤ 0.4V at ISINK = 3.2mA for RESET output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.19V ±1.5% - precisely monitors +2.2V rail with brownout protection down to VCC = +1.0V |
| Reset Timeout Period | 140ms (min) - ensures µP completes full initialization before release from reset |
| Watchdog Timeout | 1.6s nominal - detects firmware hangs in real-time embedded applications |
| VCC Operating Range | +2.1V to +2.75V - optimized for low-voltage systems using 2.2V/2.5V supplies |
| Supply Current | 25µA max at +2.75V - enables battery-powered operation with minimal quiescent drain |
| Output Type | Dual push-pull: RESET (active-low), RESET (active-high) - eliminates need for external pullups or inverters |
| MR Input | Internal 50kΩ pullup, 1µs min pulse width - supports momentary switch interface with no external R/C |
Pinout & Package
Package: 5-pin SOT23-5, surface-mount, 2.9mm × 1.6mm footprint, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low during fault; drives µP reset pin directly without pullup resistor |
| 2 | GND | Ground reference for all internal circuits and reset timing accuracy |
| 3 | WDI | Watchdog input - rising/falling edges clear 1.6s timer; unconnected disables watchdog |
| 4 | RESET (active-high) | Push-pull output asserted high during fault; interfaces with logic requiring active-high reset enable |
| 5 | VCC | Supply and monitored voltage input - powers device and sets reset threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual push-pull reset outputs | Eliminates external level-shifting or inversion circuitry for mixed-signaling µP platforms |
| Guaranteed reset validity to VCC = +1.0V | Ensures deterministic reset behavior during deep brownout or battery sag conditions |
| No external components required | Reduces BOM count and PCB area - MR pullup, reset timing, and watchdog are fully integrated |
| 100ns MR glitch rejection | Prevents spurious resets from EMI or switch bounce in industrial environments |
| Immunity to short negative VCC transients | Withstands ≤20µs, 100mV VCC glitches without false triggering - critical for noisy power rails |
Applications
| Embedded Controllers | Portable/Battery-Powered Equipment |
|---|---|
|
Use Scenario: Microcontroller-based HVAC controller operating from a 2.2V LiFePO₄ battery with intermittent load surges. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET and RESET simultaneously during battery voltage dip below 2.19V, ensuring clean restart after brownout recovery. Use Value: Prevents corrupted EEPROM writes and state-machine lockup by enforcing ≥140ms reset hold time while VCC stabilizes. |
Use Scenario: Handheld medical glucose meter powered by single-cell alkaline battery (1.0–1.6V range). IC Role / Device Role / Timing Role: Monitors declining supply during battery depletion; triggers dual-reset outputs to halt ADC sampling and preserve calibration data. Use Value: Guaranteed reset operation down to VCC = +1.0V allows safe shutdown before data loss or display corruption occurs. |
| Intelligent Instruments | Automotive Systems |
|
Use Scenario: Portable oscilloscope with ARM Cortex-M4 core and analog front-end requiring synchronized reset on power-on. IC Role / Device Role / Timing Role: Generates simultaneous active-low and active-high reset signals to initialize µP and FPGA logic blocks in coordinated sequence. Use Value: Dual push-pull outputs eliminate timing skew between digital and analog subsystems during cold start. |
Use Scenario: Body control module (BCM) in 12V automotive system with local 2.2V LDO powering safety-critical sensors. IC Role / Device Role / Timing Role: Supervises 2.2V sensor rail; watchdog monitors firmware execution via WDI toggling from CAN protocol handler. Use Value: 1.6s watchdog timeout provides sufficient margin for CAN message processing while detecting stuck states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6823YUK | Includes manual reset input (MR); lacks second push-pull RESET output | Requires external inverter or logic to generate active-high reset signal | Select when manual reset is mandatory and dual-reset polarity is not needed |
| MAX6315US23D3+ | Single active-low open-drain reset; no watchdog or dual-output capability | Cannot replace watchdog functionality or provide active-high reset without external circuitry | Select only for basic voltage monitoring where watchdog and dual polarity are unnecessary |
Compared with MAX6824YUK, MAX6823YUK adds MR but removes one reset output, limiting flexibility in mixed-signaling designs; MAX6315US23D3+ reduces feature set significantly - omitting watchdog, dual outputs, and MR - making it suitable only for cost-sensitive, non-safety-critical monitoring.
Availability
MAX6824YUK is available at Aetrix Electronics and suitable for embedded controllers, portable/battery-powered equipment, intelligent instruments, and automotive systems requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX6824YUK 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, and computing applications, with emphasis on reliability and integration.
The MAX6821–MAX6825 family was engineered specifically for low-voltage microprocessor supervision in space-constrained, battery-sensitive systems - delivering voltage monitoring, watchdog, and flexible reset signaling in a single 5-pin SOT23 package.
FAQ
What is the exact reset threshold voltage for MAX6824YUK?
The MAX6824YUK has a factory-trimmed reset threshold of 2.19V with ±1.5% accuracy over –40°C to +125°C. This value is confirmed in the Threshold Suffix Guide (Y = 2.19V) and validated in the Electrical Characteristics table under VTH for MAX682_Y. The MAX6824YUK uses this threshold to monitor 2.2V supply rails in low-power systems.
Does MAX6824YUK include a manual reset input (MR)?
No, the MAX6824YUK does not include a manual reset input. Per the Selector Guide and Pin Description, MAX6824 supports watchdog input (WDI) and dual push-pull reset outputs (RESET and RESET), but omits MR - unlike MAX6821/MAX6822/MAX6823/MAX6825. This is a deliberate functional distinction confirmed across datasheet sections including "Features", "Selector Guide", and "Pin Configurations".
What are the watchdog timeout specifications for MAX6824YUK?
The MAX6824YUK features a watchdog timeout period of 1.6s nominal, with a minimum of 0.80s and maximum of 2.60s over –40°C to +125°C. This is specified in the Electrical Characteristics table under tWD. The timer clears on any WDI edge transition and remains disabled if WDI is left unconnected or three-stated - a behavior explicitly documented in the "Watchdog Input" section.
How does the dual reset output architecture of MAX6824YUK function in practice?
The MAX6824YUK provides two independent push-pull outputs: RESET (active-low) and RESET (active-high). When a fault occurs - e.g., VCC drops below 2.19V - RESET goes low while RESET goes high simultaneously, both held for ≥140ms. This eliminates need for external inverters or pull-up resistors, enabling direct connection to µPs with either reset polarity requirement - a capability verified in the "Pin Description" and "Selector Guide".
What is the minimum VCC level at which MAX6824YUK guarantees correct reset output state?
The MAX6824YUK guarantees correct reset output state down to VCC = +1.0V, as stated in the General Description and confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections. This ensures deterministic reset behavior during severe brownout or battery-depletion scenarios - a key differentiator versus supervisors that fail to assert reset below ~1.5V.
MAX6824YUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.19V
- 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
MAX6824YUK FAQ
1.How can I place an order for MAX6824YUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6824YUK 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 MAX6824YUK reliable?
The price and inventory of MAX6824YUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6824YUK is usually 5 days.
3.What payment methods are accepted for MAX6824YUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6824YUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6824YUK?
MAX6824YUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6824YUK 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 MAX6824YUK?
For technical support, including MAX6824YUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6824YUK requirements.
6.How does Aetrix verify that MAX6824YUK is sourced from the original manufacturer or authorized distributors?
All MAX6824YUK 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 MAX6824YUK meets industry standards.
7.What is the process for return or replacement of MAX6824YUK?
All MAX6824YUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6824YUK, 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 MAX6824YUK part is unused and in its original packaging.
Return procedure for MAX6824YUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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