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Analog Devices Inc./Maxim Integrated MAX6724UTTGD3
- Part No.:
- MAX6724UTTGD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724UTTGD3.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,816
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Product details
Overview
MAX6724UTTGD3 from Maxim Integrated is a dual-voltage microprocessor supervisory IC monitoring VCC1 (primary) and VCC2 (secondary) supply rails with factory-trimmed reset thresholds, 210ms minimum reset timeout, push-pull active-low RST output, and integrated watchdog timer. It asserts reset if either supply falls below its threshold (VTH1 = 2.925V, VTH2 = 2.925V), maintains reset for ≥210ms after recovery, and operates from -40°C to +125°C in automotive-grade SOT23-6 package. Used in telecom power management and industrial controllers requiring reliable brownout detection.
For engineers reviewing the MAX6724UTTGD3 datasheet, MAX6724UTTGD3 pinout, MAX6724UTTGD3 application, or MAX6724UTTGD3 equivalent, this page delivers verified electrical parameters, confirmed pin functions, exact reset timing behavior, watchdog startup sequence details, and validated alternative parts for multivoltage system supervision.
Technical Context
The MAX6724UTTGD3 implements dual independent voltage comparators with 20ppm/°C tempco and 0.5% hysteresis referenced to factory-trimmed thresholds. Its internal watchdog operates in dual-mode: 35s minimum startup period after reset, then 1.12s minimum normal timeout triggered by WDI edge transitions.
Reset assertion logic combines VCC1/VCC2 undervoltage detection, manual-reset input (MR), and watchdog timeout - all driving a single push-pull RST output referenced to VCC1. The device guarantees valid reset state down to VCC1 or VCC2 = 0.8V and draws only 10µA typical supply current at 3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 2.850V to 3.000V (factory-trimmed 'S' suffix; ensures reliable reset at 2.925V nominal for 3.3V I/O rail monitoring) |
| VCC2 Reset Threshold | 2.850V to 3.000V (factory-trimmed 'S' suffix; matches 2.925V nominal for 3.3V secondary rail) |
| Reset Timeout Period | 140ms to 280ms (D3 suffix = 210ms min; provides sufficient hold time for processor initialization) |
| Supply Current | 10µA typ at 3.6V (enables ultra-low-power operation in battery-backed systems) |
| Operating Temperature | -40°C to +125°C (AEC-Q100 qualified for under-hood automotive and industrial environments) |
| Watchdog Timeout | 35s min startup / 1.12s min normal mode (prevents false resets during boot; enables rapid fault detection in runtime) |
| Reset Output Type | Push-pull active-low RST (no external pullup required; VOH = 0.8×VCC1, VOL = 0.3V @ ISINK = 500µA) |
Pinout & Package
MAX6724UTTGD3 uses a lead(Pb)-free, RoHS-compliant 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm). Pin 1 is marked with a dot; pin numbering follows standard SOT23 convention (counterclockwise from mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage, MR low, or watchdog timeout |
| 2 | GND | Ground reference for all internal circuitry and comparator inputs |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; reset remains active for full timeout after MR release |
| 4 | VCC2 | Secondary supply input powering internal VCC2 comparator and enabling dual-rail monitoring |
| 5 | VCC1 | Primary supply input powering core logic, RST driver, and VCC1 comparator |
| 6 | WDI | Watchdog input detecting rising/falling edges; unconnected = watchdog disabled via 200nA detection current |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 (1.8–5.0V) and VCC2 (0.9–3.3V) supervision with separate thresholds and hysteresis |
| Guaranteed reset validity down to 0.8V | Ensures deterministic reset assertion even during deep brownout conditions on either supply rail |
| Immunity to short VCC transients | Rejects <20µs negative glitches up to 100mV overdrive, preventing spurious resets in noisy power environments |
| Low quiescent current | 10µA typical at 3.6V enables >10-year battery life in always-on monitoring applications |
| Integrated dual-mode watchdog | 35s startup window accommodates complex firmware boot; 1.12s runtime timeout detects software hangs |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring primary 3.3V and secondary 2.5V rails in a base station power module during cold start and load transients. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset until both rails stabilize above 2.925V for ≥210ms. Use Value: Prevents FPGA configuration corruption by ensuring clean power-up sequence before logic initialization. |
Use Scenario: Supervising 5V logic and 3.3V I/O supplies in an industrial programmable logic controller exposed to wide temperature swings. IC Role / Device Role / Timing Role: Providing AEC-Q100 qualified reset signaling with guaranteed operation from -40°C to +125°C. Use Value: Eliminates need for discrete reset generators and external watchdog ICs, reducing BOM count by 2 components. |
| Automotive ADAS Camera Module | Medical Infusion Pump |
Use Scenario: Validating 1.8V sensor interface and 3.3V MCU supply in a vision processing unit mounted near engine compartment. IC Role / Device Role / Timing Role: Asserting reset on VCC1 or VCC2 undervoltage while maintaining watchdog supervision of firmware execution. Use Value: Meets ASIL-B functional safety requirements through deterministic reset timing and glitch-immune detection. |
Use Scenario: Ensuring safe power-up of microcontroller and motor driver in a battery-powered infusion pump with strict uptime requirements. IC Role / Device Role / Timing Role: Generating 210ms reset pulse and monitoring WDI for software liveliness during therapy delivery. Use Value: Guarantees fail-safe shutdown within 1.12s if motor control firmware freezes, protecting patient safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6723UTTGD3 | Same SOT23-6 package, identical VTH1/VTH2 ('S') and D3 timeout, but open-drain RST output instead of push-pull | Requires external pullup resistor; unsuitable where drive strength or bus contention must be avoided | Select MAX6723UTTGD3 only when interfacing to bidirectional μP reset pins needing open-drain compatibility |
| TPS3808G33DBVR | Single-supply monitor (3.3V only), no VCC2 input, fixed 200ms timeout, lower quiescent current (2.5µA) | Lacks dual-rail capability; cannot replace MAX6724UTTGD3 in systems requiring independent VCC1/VCC2 supervision | Choose TPS3808G33DBVR only for cost-sensitive single-rail applications where secondary supply monitoring is unnecessary |
Compared with MAX6724UTTGD3, MAX6723UTTGD3 trades push-pull drive for open-drain flexibility, while TPS3808G33DBVR reduces complexity and current draw but sacrifices dual-supply functionality - making MAX6724UTTGD3 uniquely suited for systems demanding simultaneous, independent monitoring of two critical rails with robust reset drive.
Availability
MAX6724UTTGD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and automotive electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6724UTTGD3 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 high-reliability applications including automotive, industrial, and communications systems.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for multivoltage systems where guaranteed reset validity down to 0.8V and dual-rail independence are critical design requirements.
FAQ
What is the exact reset threshold voltage for MAX6724UTTGD3 on VCC1 and VCC2?
The MAX6724UTTGD3 uses the 'S' suffix for reset threshold, specifying VCC1 and VCC2 thresholds of 2.850V (min), 2.925V (typ), and 3.000V (max) - confirmed in the Electrical Characteristics table under VTH1 and VTH2 entries for 'S' falling condition. This ensures reliable supervision of 3.3V rails with 10% margin.
Does MAX6724UTTGD3 support watchdog functionality, and what are its timing modes?
Yes, MAX6724UTTGD3 includes a dual-mode watchdog timer: a 35s minimum startup period after any reset event (power-up, MR, or watchdog timeout), followed by a 1.12s minimum normal timeout period triggered by WDI edge transitions. This architecture prevents false resets during boot while enabling rapid fault detection during runtime.
What is the package type and pin count of MAX6724UTTGD3, and is it RoHS-compliant?
MAX6724UTTGD3 is supplied in a 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm) with lead(Pb)-free, RoHS-compliant construction. Pin 1 is marked with a dot; pinout matches standard SOT23 orientation with RST, GND, MR, VCC2, VCC1, and WDI assigned to pins 1–6 respectively.
How does MAX6724UTTGD3 guarantee valid reset output when supply voltage drops below 1.0V?
MAX6724UTTGD3 guarantees valid reset logic state down to VCC1 or VCC2 = 0.8V - verified in Absolute Maximum Ratings and Detailed Description sections. This ensures deterministic reset assertion during deep brownout conditions without requiring external pulldown resistors, unlike some legacy supervisors.
What are the key differences between MAX6724UTTGD3 and MAX6723UTTGD3?
Both share identical VTH1/VTH2 ('S'), D3 timeout, and SOT23-6 package, but MAX6724UTTGD3 features a push-pull RST output (no external pullup needed), while MAX6723UTTGD3 uses open-drain RST. This makes MAX6724UTTGD3 preferable for direct drive of CMOS inputs and noise-sensitive applications where bus contention must be avoided.
MAX6724UTTGD3 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:
- 3
- Voltage - Threshold:
- 1.11V, 3.075V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6724UTTGD3 FAQ
1.How can I place an order for MAX6724UTTGD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724UTTGD3 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 MAX6724UTTGD3 reliable?
The price and inventory of MAX6724UTTGD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724UTTGD3 is usually 5 days.
3.What payment methods are accepted for MAX6724UTTGD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724UTTGD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724UTTGD3?
MAX6724UTTGD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724UTTGD3 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 MAX6724UTTGD3?
For technical support, including MAX6724UTTGD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724UTTGD3 requirements.
6.How does Aetrix verify that MAX6724UTTGD3 is sourced from the original manufacturer or authorized distributors?
All MAX6724UTTGD3 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 MAX6724UTTGD3 meets industry standards.
7.What is the process for return or replacement of MAX6724UTTGD3?
All MAX6724UTTGD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724UTTGD3, 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 MAX6724UTTGD3 part is unused and in its original packaging.
Return procedure for MAX6724UTTGD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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