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Analog Devices Inc./Maxim Integrated MAX6724AUTSVD3+T
- Part No.:
- MAX6724AUTSVD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724AUTSVD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6724AUTSVD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory IC that monitors VCC1 (primary) and VCC2 (secondary) supply rails, asserts active-low push-pull reset when either falls below factory-trimmed thresholds (VTH1 = 3.075V typ, VTH2 = 1.388V typ), maintains reset for 140ms minimum timeout, and operates from -40°C to +125°C in SOT23-6 package - used in telecom power management and industrial embedded controllers.
For engineers reviewing the MAX6724AUTSVD3+T datasheet, MAX6724AUTSVD3+T pinout, MAX6724AUTSVD3+T application, or MAX6724AUTSVD3+T equivalent, key selection criteria include guaranteed reset validity down to VCC1/VCC2 = 0.8V, 14µA typical supply current at 3.6V, push-pull RST/RST2 outputs referenced to VCC1/VCC2 respectively, and support for manual reset (MR) with internal 50kΩ pullup.
Technical Context
The MAX6724AUTSVD3+T implements dual independent voltage comparators with hysteresis (0.5% of VTH), a programmable 140ms reset timeout timer, and push-pull output drivers referenced separately to VCC1 (RST) and VCC2 (RST2). It guarantees correct reset logic state even when either supply remains ≥0.8V, enabling robust brownout detection in multirail systems.
This variant includes MR (manual-reset input), no WDI or PFI/PFO functions, and uses the 'S' suffix for VCC1 threshold (3.075V typ) and 'D3' suffix for 140ms min reset timeout. Its SOT23-6 pinout allocates dedicated VCC1, VCC2, GND, MR, RST, and RST2 terminals - no shared or multiplexed pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 3.000V–3.150V (factory-trimmed 'S' suffix; enables reliable monitoring of 3.3V I/O rails) |
| VCC2 Reset Threshold | 1.350V–1.425V (factory-trimmed 'D' suffix; supports 1.35V–1.4V core supplies) |
| Reset Timeout Period | 140ms minimum (D3 suffix; ensures μP completes boot sequence before release) |
| Supply Current | 14µA typical at 3.6V (enables battery-backed operation >10 years in low-power systems) |
| Operating Temperature | -40°C to +125°C (AEC-Q100–compatible thermal range for automotive/industrial use) |
| Output Type | Push-pull RST (VCC1-referenced) and RST2 (VCC2-referenced); eliminates external pullups |
| Reset Validity Voltage | Guaranteed down to VCC1 or VCC2 = 0.8V (ensures deterministic reset during deep brownout) |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 1.1mm 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; drives high to 0.8×VCC1 when not asserted; sinks 1.2mA at 2.7V |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output drivers |
| 3 - MR | Active-low manual-reset input | Internal 50kΩ pullup to VCC1; 1µs minimum pulse width; immune to <100ns glitches |
| 4 - VCC2 | Secondary supply input | Powers internal VCC2 comparator and RST2 driver; monitors 0.9V–3.3V rails |
| 5 - VCC1 | Primary supply input | Powers main circuitry and RST driver; accepts 1.8V–5.0V; determines reset validity floor (0.8V) |
| 6 - RST2 | Active-low push-pull secondary reset output | Referenced to VCC2; asserts independently if VCC2 drops below threshold |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply monitoring | Simultaneous VCC1 and VCC2 supervision with separate thresholds and outputs avoids single-point failure |
| Push-pull RST and RST2 outputs | Eliminates need for external pullup resistors; reduces BOM count and PCB area in space-constrained designs |
| 140ms minimum reset timeout | Ensures sufficient hold time for complex μP initialization sequences without requiring external timing components |
| 0.8V reset validity guarantee | Provides deterministic reset assertion even during severe brownout conditions where VCC drops near ground |
| 14µA typical supply current | Enables integration into always-on subsystems (e.g., RTC backup, wake-on-event circuits) without compromising battery life |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
|
Use Scenario: Monitoring 3.3V backplane I/O and 1.35V FPGA core rails in 48V-powered telecom line cards. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting coordinated RST (3.3V domain) and RST2 (1.35V domain) to prevent partial initialization. Use Value: Prevents metastability in mixed-voltage interfaces by ensuring both rails stabilize before μP release. |
Use Scenario: Supervising 24V DC-DC converted 5V logic rail and 3.3V microcontroller core in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Independent VCC1/VCC2 monitoring with 140ms timeout ensures safe boot after AC line interruption. Use Value: Guarantees reset remains asserted until both rails settle, eliminating firmware crashes due to premature release. |
| Automotive Body Control Module | Medical Infusion Pump |
|
Use Scenario: Validating 5V CAN transceiver supply and 1.8V MCU core voltage in 12V automotive environments subject to load dump. IC Role / Device Role / Timing Role: Push-pull RST/RST2 outputs drive isolated reset trees; MR enables service-mode forced reset. Use Value: -40°C to +125°C operation and 0.8V reset validity ensure reliability across engine bay temperature extremes. |
Use Scenario: Monitoring battery-backed 3.3V system rail and 1.2V ADC reference supply in Class II medical devices. IC Role / Device Role / Timing Role: Dual-threshold supervision with 14µA quiescent current extends battery runtime between calibrations. Use Value: Low ICC enables >5-year shelf life in standby mode while maintaining fail-safe reset integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6723AUTSVD3+T | Open-drain RST/RST2 outputs (vs. push-pull); requires external pullups | Used where level-shifting or wired-OR reset buses are needed | Select when interfacing to bidirectional μP reset pins or multi-drop reset networks |
| TPS3808G33DBVR | Single-supply (3.3V only); no VCC2 input or RST2 output; 200ms timeout | Limited to 3.3V-only systems; lacks secondary rail supervision capability | Choose only for cost-sensitive 3.3V-only applications without core/I/O rail separation |
Compared with MAX6724AUTSVD3+T, MAX6723AUTSVD3+T trades push-pull convenience for open-drain flexibility, while TPS3808G33DBVR sacrifices dual-rail monitoring for lower unit cost and simpler layout - neither offers identical functionality.
Availability
MAX6724AUTSVD3+T is available at Aetrix Electronics and suitable for telecom power sequencing, industrial PLC controllers, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6724AUTSVD3+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 demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage dual/triple supervisory circuits optimized for multirail embedded systems where simultaneous power-rail monitoring and deterministic reset timing are critical.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6724AUTSVD3+T?
The MAX6724AUTSVD3+T has a factory-trimmed VCC1 reset threshold of 3.000V (min), 3.075V (typ), and 3.150V (max), corresponding to the 'S' suffix in its part number. This enables precise supervision of 3.3V I/O supplies while accommodating standard tolerance bands. The threshold is guaranteed over -40°C to +125°C with 20ppm/°C tempco.
Does MAX6724AUTSVD3+T support monitoring a third voltage rail?
No, MAX6724AUTSVD3+T does not support a third monitored voltage. It is a dual-supply supervisor with dedicated VCC1 and VCC2 inputs only. Models like MAX6723A or MAX6725A include RSTIN for adjustable third-rail monitoring; MAX6724AUTSVD3+T omits this pin and associated circuitry per its SOT23-6 pinout and 'D3' configuration.
What is the function of the MR pin on MAX6724AUTSVD3+T?
The MR (Manual Reset) pin on MAX6724AUTSVD3+T is an active-low input with internal 50kΩ pullup to VCC1. Pulling MR low forces an immediate reset assertion on both RST and RST2 outputs, which persists for the full 140ms timeout period after MR returns high. It requires no external components and rejects <100ns noise spikes.
Can MAX6724AUTSVD3+T operate with VCC1 = 1.8V and VCC2 = 1.2V?
Yes, MAX6724AUTSVD3+T supports VCC1 from 1.8V to 5.0V and VCC2 from 0.9V to 3.3V. At VCC1 = 1.8V and VCC2 = 1.2V, it maintains guaranteed reset validity (output logic correctness) down to 0.8V on either rail, delivers 14µA typical supply current, and asserts RST/RST2 with push-pull drive referenced to their respective supplies.
What package type and footprint does MAX6724AUTSVD3+T use?
MAX6724AUTSVD3+T uses the SOT23-6 package (outline 21-0058, land pattern 90-0175), measuring 1.6mm × 2.9mm with 0.95mm pitch. It is RoHS-compliant (indicated by '+' in package code U6+1) and designed for reflow soldering. Thermal resistance is θJA = 115°C/W on multilayer PCBs.
MAX6724AUTSVD3+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, 2.925V, 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
MAX6724AUTSVD3+T FAQ
1.How can I place an order for MAX6724AUTSVD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724AUTSVD3+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 MAX6724AUTSVD3+T reliable?
The price and inventory of MAX6724AUTSVD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724AUTSVD3+T is usually 5 days.
3.What payment methods are accepted for MAX6724AUTSVD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724AUTSVD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724AUTSVD3+T?
MAX6724AUTSVD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724AUTSVD3+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 MAX6724AUTSVD3+T?
For technical support, including MAX6724AUTSVD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724AUTSVD3+T requirements.
6.How does Aetrix verify that MAX6724AUTSVD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6724AUTSVD3+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 MAX6724AUTSVD3+T meets industry standards.
7.What is the process for return or replacement of MAX6724AUTSVD3+T?
All MAX6724AUTSVD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724AUTSVD3+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 MAX6724AUTSVD3+T part is unused and in its original packaging.
Return procedure for MAX6724AUTSVD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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