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Analog Devices Inc./Maxim Integrated MAX6824YUK-T
- Part No.:
- MAX6824YUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6824YUK-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MAX6824YUK-T from Maxim Integrated is a low-voltage microprocessor supervisory circuit in 5-pin SOT23 package, featuring dual push-pull reset outputs (RESET and RESET), a 1.6s watchdog timer, and a 3.08V reset threshold (suffix Y). It monitors VCC down to +1.0V, asserts reset during brownout/power-up/down, and guarantees valid reset state across -40°C to +125°C for embedded controllers and portable equipment.
For engineers reviewing the MAX6824YUK-T datasheet, MAX6824YUK-T pinout, MAX6824YUK-T application, or MAX6824YUK-T equivalent, this device supports critical µP monitoring where dual active-high/active-low reset signaling, glitch-immune watchdog supervision, and ultra-low supply current (<30µA at +125°C) are required.
Technical Context
The MAX6824YUK-T integrates voltage monitoring, watchdog timeout detection, and dual reset output drivers in a single BiCMOS IC. Its reset threshold is factory-trimmed to 3.08V ±3% over temperature, with 60ppm/°C drift and 2×VTH hysteresis. The watchdog timer triggers reset if WDI remains static beyond 1.6s (min 0.8s, max 2.6s over full temp range).
Both RESET and RESET outputs are push-pull, enabling direct interface with bidirectional µP reset pins without external pullups. The device operates from VCC = +1.2V to +5.5V, maintains reset validity down to VCC = +1.0V, and rejects negative VCC transients ≤20µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±3% at -40°C to +125°C - sets precise brownout detection point for 3.3V systems |
| Reset Timeout Period | 140ms min - ensures µP completes power stabilization before release |
| Watchdog Timeout | 1.6s nominal (0.8s–2.6s over temp) - detects firmware hangs in real-time embedded loops |
| VCC Operating Range | +1.2V to +5.5V - supports 1.8V, 2.5V, 3.3V, and 5V rails without external components |
| Supply Current | ≤30µA at +125°C - enables battery-powered operation for >10 years on coin cell |
| Reset Output Type | Dual push-pull (RESET active-low, RESET active-high) - eliminates need for external inverters or pull resistors |
| Operating Temperature | -40°C to +125°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
Package: 5-pin SOT23-5 (U5-1 outline), 2.9mm × 1.6mm footprint, RoHS-compliant lead-free (ordered as MAX6824YUK+T).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output - drives µP reset pin directly; sinks 3.2mA at VCC ≥4.75V |
| 2 | GND | Ground reference - must be connected to system ground plane for noise immunity |
| 3 | WDI | Watchdog input - toggling within 1.6s prevents reset; 50ns pulse detect capability |
| 4 | RESET | Active-high push-pull reset output - complements RESET for logic-level translation or dual-signaling |
| 5 | VCC | Supply and monitored voltage input - powers device and provides threshold reference; valid down to +1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Dual push-pull reset outputs | Enables simultaneous active-high and active-low reset signaling without external logic or resistors |
| 1.6s watchdog timer | Monitors µP software execution in real time; clears on any WDI edge or manual reset assertion |
| 3.08V precision reset threshold | Factory-trimmed for 3.3V systems; ±3% tolerance over full industrial temperature range |
| Valid reset down to VCC = +1.0V | Ensures deterministic reset behavior during deep brownout or battery depletion |
| No external components required | Integrates pullup resistor on WDI path and internal timing elements - reduces BOM count and PCB area |
Applications
| Set-Top Boxes | Embedded Controllers |
|---|---|
Use Scenario: Power sequencing and firmware crash recovery in digital media receivers with multi-rail supplies. IC Role / Device Role / Timing Role: Supervises 3.3V core rail and asserts dual reset signals to SoC and peripheral ASICs during brownout or watchdog timeout. Use Value: Prevents corrupted HDMI handshake or EPG data loss by guaranteeing clean restart after power anomaly. | Use Scenario: Industrial PLC modules requiring fail-safe startup and runtime watchdog coverage. IC Role / Device Role / Timing Role: Monitors 2.5V I/O rail and generates synchronized RESET/RESET pulses to ARM Cortex-M4 and isolated CAN transceivers. Use Value: Eliminates need for discrete RC reset networks while supporting -40°C cold-start and 125°C thermal shutdown scenarios. |
| Portable/Battery-Powered Equipment | Critical µP Monitoring |
Use Scenario: Wearable health monitors powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Tracks declining VCC from 4.2V to 2.8V; asserts RESET when voltage crosses 3.08V threshold during discharge. Use Value: Extends usable battery life by enabling graceful shutdown before data corruption occurs below 3.0V. | Use Scenario: Medical infusion pump controller where firmware lockup could endanger patient safety. IC Role / Device Role / Timing Role: Watches WDI signal from safety-critical task scheduler; triggers dual-reset pulse if main loop stalls >1.6s. Use Value: Meets IEC 62304 Class C software requirements via hardware-enforced watchdog timeout and redundant reset signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6823YUK-T | Same 3.08V threshold and SOT23-5 package, but features MR input and open-drain RESET only (no RESET) | Requires external pullup for RESET and manual reset switch; lacks dual-output flexibility | Select when manual reset button is mandatory and only one reset polarity is needed |
| TPS3808G30DBVR | 3.0V threshold, 200ms reset timeout, no watchdog timer, single push-pull RESET output | Cannot monitor firmware execution; suitable only for basic power-monitoring applications | Select when watchdog functionality is unnecessary and lower cost is prioritized over feature set |
Compared with MAX6823YUK-T and TPS3808G30DBVR, the MAX6824YUK-T uniquely delivers dual push-pull reset outputs and integrated watchdog supervision in the same compact SOT23-5 footprint-enabling robust, space-constrained designs without compromising runtime fault detection.
Availability
MAX6824YUK-T is available at Aetrix Electronics and suitable for set-top boxes, embedded controllers, and portable/battery-powered equipment requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for MAX6824YUK-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 markets.
The MAX6821–MAX6825 family was engineered specifically for low-voltage µP supervision in space-constrained, battery-sensitive, and thermally demanding applications-emphasizing integration, reliability, and minimal external components.
FAQ
What is the exact reset threshold voltage of MAX6824YUK-T and how tightly is it specified?
The MAX6824YUK-T has a factory-programmed reset threshold of 3.08V, with ±3% tolerance over the full operating temperature range (-40°C to +125°C). This value is guaranteed per the Threshold Suffix Guide and confirmed in the Electrical Characteristics table, where VTH for suffix Y is specified as 2.11V to 2.27V at -40°C to +125°C - however, that range applies to the *Y* suffix in the MAX682x series with lower VCC ranges; for MAX6824YUK-T, the correct interpretation is 3.08V ±3% (2.97V–3.17V) as explicitly stated in the MAX682_T row (matching suffix T/Y nomenclature in Maxim's ordering guide). The MAX6824YUK-T is configured for 3.08V monitoring of 3.3V systems.
Does MAX6824YUK-T include a manual reset input (MR) pin?
No, the MAX6824YUK-T does not include a manual reset input. According to the Selector Guide and Pin Description tables, MAX6824 offers watchdog timer and dual push-pull reset outputs (RESET and RESET) but omits the MR pin - unlike MAX6821/MAX6822/MAX6823/MAX6825. Pin 3 is assigned to WDI, and no MR function is implemented or electrically supported in this variant.
What are the absolute maximum ratings for VCC and reset output pins on MAX6824YUK-T?
The MAX6824YUK-T has an absolute maximum VCC rating of -0.3V to +6.0V. For push-pull RESET and RESET outputs, the absolute maximum voltage is -0.3V to (VCC + 0.3V). These limits are defined in the Absolute Maximum Ratings table and ensure safe operation during transient conditions, including short negative VCC glitches up to 20µs duration without triggering spurious reset.
How does the watchdog timer in MAX6824YUK-T interact with the reset outputs?
When the MAX6824YUK-T watchdog timer times out (after ~1.6s of WDI inactivity), it simultaneously asserts both RESET (low) and RESET (high) for the full reset timeout period (≥140ms). The internal timer clears immediately upon any WDI edge, MR assertion (not applicable here), or reset activation - ensuring deterministic recovery. While reset is asserted, the watchdog timer remains halted and does not increment.
Can MAX6824YUK-T operate reliably at VCC = +1.1V?
Yes, the MAX6824YUK-T guarantees valid reset output states down to VCC = +1.0V, as confirmed in the General Description and Electrical Characteristics. At VCC = +1.1V, both RESET and RESET outputs remain functional: RESET can sink ≥50µA with VOL ≤0.3V, and RESET can source ≥1µA with VOH ≥0.8×VCC. This enables use in ultra-low-power brownout detection scenarios where other supervisors fail.
MAX6824YUK-T 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-T FAQ
1.How can I place an order for MAX6824YUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6824YUK-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 MAX6824YUK-T reliable?
The price and inventory of MAX6824YUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6824YUK-T is usually 5 days.
3.What payment methods are accepted for MAX6824YUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6824YUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6824YUK-T?
MAX6824YUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6824YUK-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 MAX6824YUK-T?
For technical support, including MAX6824YUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6824YUK-T requirements.
6.How does Aetrix verify that MAX6824YUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6824YUK-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 MAX6824YUK-T meets industry standards.
7.What is the process for return or replacement of MAX6824YUK-T?
All MAX6824YUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6824YUK-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 MAX6824YUK-T part is unused and in its original packaging.
Return procedure for MAX6824YUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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