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Analog Devices Inc./Maxim Integrated MAX6724AUTRVD3+T
- Part No.:
- MAX6724AUTRVD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724AUTRVD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6724AUTRVD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 280ms minimum reset timeout, push-pull active-low RST output, and watchdog timer disabled by default. It ensures reliable system reset during brownout in telecom power supplies and industrial controllers.
For engineers reviewing the MAX6724AUTRVD3+T datasheet, MAX6724AUTRVD3+T pinout, MAX6724AUTRVD3+T application, or MAX6724AUTRVD3+T equivalent, key selection criteria include dual-voltage monitoring capability down to 0.8V supply validity, guaranteed 280ms reset assertion time, push-pull RST logic referenced to VCC1, and absence of manual-reset or power-fail I/O in this variant.
Technical Context
The MAX6724AUTRVD3+T implements independent voltage comparators for VCC1 and VCC2, each with ±0.5% hysteresis and 20ppm/°C tempco, asserting reset when either supply falls below its trimmed threshold. Its internal reset timeout timer guarantees ≥280ms low pulse width after all monitored voltages recover.
This variant features a push-pull RST output referenced to VCC1, no RSTIN/PFI/WDI/MR pins enabled (per pin mapping), and operates across –40°C to +125°C. It draws only 10µA typical supply current at 3.6V, enabling use in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Range | 0.8V to 5.5V - supports primary supply monitoring from low-voltage cores up to 5V legacy rails |
| VCC2 Range | 0.8V to 5.5V - monitors secondary supply including 0.9V–3.3V logic domains with guaranteed reset validity |
| Reset Timeout | 280ms (min) - ensures sufficient hold time for full μP initialization and peripheral stabilization |
| Supply Current | 10µA (typ) at 3.6V - enables multi-year operation in always-on industrial sensors and backup circuits |
| Reset Threshold Hysteresis | 0.5% - prevents chatter during slow-rising/falling supply transitions near trip point |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial control cabinet deployment |
| Reset Propagation Delay | 20µs - fast response to supply faults without compromising noise immunity |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage and holds for 280ms min |
| 2 | GND | Ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Not connected internally - pin is NC per MAX6724A variant; must be left floating or tied to VCC1 |
| 4 | VCC2 | Secondary supply input powering VCC2 comparator and related logic; valid down to 0.8V |
| 5 | VCC1 | Primary supply input powering core logic, RST driver, and VCC1 comparator; valid down to 0.8V |
| 6 | RSTIN/PFI | Not connected internally - pin is NC per MAX6724A variant; must be left floating or tied to GND/VCC1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 and VCC2 supervision with separate thresholds avoids single-point failure in multirail systems |
| Push-pull RST output | Eliminates need for external pullup resistor, reducing BOM count and PCB area in space-constrained modules |
| 280ms reset timeout | Guaranteed minimum assertion time ensures μP and peripherals fully exit reset before code execution resumes |
| Low 10µA supply current | Enables integration into always-on subsystems without impacting battery life or thermal budget |
| –40°C to +125°C operation | Validated performance across full industrial temperature range without derating or external compensation |
Applications
| Telecom Power Management | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring 3.3V management rail and 1.2V FPGA core supply in remote radio unit power sequencer. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset to ARM Cortex-M7 and FPGA fabric upon any rail collapse. Use Value: Prevents partial configuration and metastability by enforcing strict 280ms reset hold time across both voltage domains. | Use Scenario: Supervising 24V DC-DC converted 5V I/O rail and 3.3V MCU supply in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Fault-detection interface between isolated power stage and safety-critical microcontroller. Use Value: Guarantees reset remains asserted until both rails stabilize above thresholds, eliminating spurious restarts during line transients. |
| Automotive ADAS Camera Module | Medical Infusion Pump Control |
Use Scenario: Validating 5V image sensor bias supply and 1.8V ISP core voltage in rear-view camera ECU operating at 105°C ambient. IC Role / Device Role / Timing Role: High-temp-stable supervisory guard ensuring deterministic boot sequence before video streaming initialization. Use Value: Maintains valid reset state down to VCC = 0.8V, enabling fail-safe behavior even during severe battery droop events. | Use Scenario: Monitoring 3.3V microcontroller supply and 2.5V analog front-end supply in Class II medical device with battery backup. IC Role / Device Role / Timing Role: Safety-enabling component verifying dual power integrity prior to motor actuation and dose delivery. Use Value: Ultra-low 10µA quiescent current extends backup runtime while meeting IEC 60601-1 leakage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6723AUTRVD3+T | Open-drain RST output; requires external pullup; identical VCC1/VCC2 thresholds and 280ms timeout | Suitable where level-shifting or wired-OR reset bus is required | Select when interfacing to bidirectional μP reset pins or sharing reset line with other open-drain sources |
| TPS3808G33DBVR | Single-supply monitor (3.3V only); no VCC2 input; 200ms timeout; higher 25µA ICC | Limited to single-rail systems; lacks secondary supply supervision | Choose only if monitoring one supply suffices and SOT23-6 footprint compatibility is critical |
Compared with MAX6723AUTRVD3+T and TPS3808G33DBVR, the MAX6724AUTRVD3+T uniquely delivers push-pull RST in a dual-supply configuration with lowest quiescent current, making it optimal for thermally constrained, multirail embedded systems requiring minimal external components.
Availability
MAX6724AUTRVD3+T is available at Aetrix Electronics and suitable for telecom power sequencers, industrial PLC controllers, automotive ADAS modules, and medical infusion pump designs requiring stable component supply and long-term manufacturability.
Supply support for MAX6724AUTRVD3+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, automotive, and communications markets.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for multivoltage systems where reliability, small size, and extended temperature operation are critical.
FAQ
What is the reset timeout period of the MAX6724AUTRVD3+T?
The MAX6724AUTRVD3+T provides a guaranteed minimum reset timeout period of 280ms after all monitored supplies rise above their thresholds. This value is fixed by the "D3" suffix in the part number and is not adjustable. The timeout begins when VCC1 and VCC2 both exceed their respective reset thresholds and ensures sufficient hold time for microprocessor and peripheral initialization before release. This timing is production-tested and specified over the full –40°C to +125°C temperature range.
Does the MAX6724AUTRVD3+T support manual reset functionality?
No, the MAX6724AUTRVD3+T does not support manual reset. Pin 3 (MR) is not connected internally per the MAX6724A variant specification and must be left floating or tied to VCC1. Unlike variants such as MAX6725A, this part omits MR, WDI, RSTIN, and PFI functions to simplify design and reduce cost in applications where only autonomous dual-supply monitoring is required.
What are the voltage threshold options for VCC1 and VCC2 on the MAX6724AUTRVD3+T?
The MAX6724AUTRVD3+T uses factory-trimmed thresholds defined by its "RV" suffix: VCC1 threshold is 3.075V (typical, "R" grade), and VCC2 threshold is 2.625V (typical, "V" grade). These values are laser-trimmed during production and exhibit ±1.5% initial accuracy with 20ppm/°C tempco. The thresholds are fixed and not externally adjustable - no resistor divider or external components are needed to set them.
Can the MAX6724AUTRVD3+T operate with VCC1 = 1.8V and VCC2 = 1.2V simultaneously?
Yes, the MAX6724AUTRVD3+T is fully specified to operate with VCC1 = 1.8V and VCC2 = 1.2V concurrently. Both supplies are guaranteed to maintain valid reset logic states down to 0.8V, and the device draws only 10µA typical total supply current in this condition. The internal comparators and push-pull RST driver function correctly across this combination, making it suitable for modern low-voltage SoC and FPGA power domains.
Is the MAX6724AUTRVD3+T RoHS compliant and lead-free?
Yes, the MAX6724AUTRVD3+T is RoHS compliant and lead-free. The "+T" suffix in the part number explicitly denotes lead-free packaging per JEDEC J-STD-609. The SOT23-6 package (U6+1) uses matte tin lead finish, and the device meets EU RoHS Directive 2011/65/EU and REACH SVHC requirements. Full compliance documentation is available through Analog Devices' product change notifications and material declarations.
MAX6724AUTRVD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.575V, 2.625V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6724AUTRVD3+T FAQ
1.How can I place an order for MAX6724AUTRVD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724AUTRVD3+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 MAX6724AUTRVD3+T reliable?
The price and inventory of MAX6724AUTRVD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724AUTRVD3+T is usually 5 days.
3.What payment methods are accepted for MAX6724AUTRVD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724AUTRVD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724AUTRVD3+T?
MAX6724AUTRVD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724AUTRVD3+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 MAX6724AUTRVD3+T?
For technical support, including MAX6724AUTRVD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724AUTRVD3+T requirements.
6.How does Aetrix verify that MAX6724AUTRVD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6724AUTRVD3+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 MAX6724AUTRVD3+T meets industry standards.
7.What is the process for return or replacement of MAX6724AUTRVD3+T?
All MAX6724AUTRVD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724AUTRVD3+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 MAX6724AUTRVD3+T part is unused and in its original packaging.
Return procedure for MAX6724AUTRVD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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