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Analog Devices Inc./Maxim Integrated MAX6724UTYHD3+T
- Part No.:
- MAX6724UTYHD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724UTYHD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6724UTYHD3+T from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (primary), VCC2 (secondary), and RSTIN (adjustable third supply) with factory-trimmed thresholds of 4.625V and 3.075V, 210ms min reset timeout, and push-pull active-low RST output. It ensures reliable system reset during power-up, brownout, or manual intervention in multivoltage embedded systems.
For engineers reviewing the MAX6724UTYHD3+T datasheet, MAX6724UTYHD3+T pinout, MAX6724UTYHD3+T application, or MAX6724UTYHD3+T equivalent, this page delivers verified specifications, exact pin functions, dual-supply monitoring behavior, watchdog-free operation, and direct alternative part comparisons for industrial and telecom power sequencing designs.
Technical Context
The MAX6724UTYHD3+T implements dual independent voltage comparators for VCC1 and VCC2 plus a dedicated adjustable RSTIN comparator referenced to a 626.5mV internal bandgap. Reset assertion occurs when any monitored supply falls below its threshold and remains asserted for a guaranteed minimum 210ms after all supplies recover.
It features push-pull RST output referenced to VCC1, no watchdog timer, no power-fail input/output, and manual reset (MR) with internal 50kΩ pullup. Guaranteed valid reset operation down to VCC1 or VCC2 = 0.8V enables robust low-voltage system supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±1.5% over temp; sets primary supply brownout detection point) |
| VCC2 Threshold | 3.075V (factory-trimmed, ±1.5% over temp; sets secondary supply fault detection level) |
| RSTIN Threshold | 626.5mV (internal reference; enables external resistor-divider for third-supply monitoring down to 0.62V) |
| Reset Timeout | 210ms (minimum guaranteed duration; ensures µP completes boot before release) |
| Supply Current | 14µA typical at 3.6V; enables ultra-low-power supervision in battery-backed systems |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded equipment deployment |
| Package | 6-pin SOT23-6; surface-mount footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6724UTYHD3+T is housed in a 6-pin SOT23-6 package with gull-wing leads, 1.27mm pitch, and JEDEC MO-178AC compliant outline. Thermal resistance θJA = 210°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on fault and holds for 210ms min |
| 2 | GND | Analog/digital ground reference; must be connected to system common ground plane |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; initiates reset when pulled low |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V); powers internal circuitry when > VCC1 and sets VCC2 threshold |
| 5 | VCC1 | Primary supply input (1.8V–5.0V); powers device when > VCC2 and sets VCC1 threshold |
| 6 | RSTIN | Adjustable undervoltage monitor input; compares external divided voltage against 626.5mV reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed voltage monitors | VCC1 = 4.625V & VCC2 = 3.075V thresholds eliminate external resistor networks for precision dual-rail supervision |
| Externally adjustable third-supply monitor | RSTIN input with 626.5mV reference supports monitoring of auxiliary rails (e.g., 1.2V, 1.8V, 2.5V) via simple resistor divider |
| Push-pull RST output | Active-low output drives high/low without external pullup; simplifies interface to µP reset pins requiring driven logic levels |
| Guaranteed reset validity down to 0.8V | Ensures correct reset state even during deep brownout conditions where VCC1 or VCC2 drops near 0.8V |
| Low 14µA supply current | Minimizes quiescent power draw in always-on supervision circuits for portable and energy-sensitive applications |
Applications
| Industrial PLC Power Sequencing | Telecom Line Card Supervision |
|---|---|
Use Scenario: Monitoring primary 3.3V I/O rail and secondary 1.2V core rail in programmable logic controller backplane modules. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail sags during hot-swap insertion or transient load events. Use Value: Prevents firmware corruption by holding µP in reset until both rails stabilize above 4.625V and 3.075V respectively, with 210ms safety margin. |
Use Scenario: Ensuring clean startup and fault recovery in multi-rail line cards with 48V-to-3.3V/1.8V DC/DC conversion stages. IC Role / Device Role / Timing Role: Triple-monitoring 3.3V (VCC1), 1.8V (VCC2), and 1.2V (via RSTIN) to detect sequential rail failures. Use Value: Enables deterministic reset coordination across FPGA, PHY, and management MCU using single IC instead of discrete supervisors. |
| Embedded Medical Sensor Hub | Network Router Control Plane |
Use Scenario: Supervising battery-backed 3.3V main supply and 1.8V sensor interface rail in portable diagnostic devices. IC Role / Device Role / Timing Role: Detecting brownout on either rail and asserting push-pull RST to halt processor execution before data loss. Use Value: 14µA quiescent current extends battery life; 0.8V reset validity ensures supervision remains functional even during deep discharge. |
Use Scenario: Coordinating power-up sequence of control-plane CPU (3.3V), DDR memory (1.5V), and PHY (2.5V) in enterprise routers. IC Role / Device Role / Timing Role: Using RSTIN to monitor 2.5V via resistor divider while VCC1/VCC2 supervise 3.3V/1.5V rails. Use Value: Eliminates need for three separate supervisors-reducing BOM count, board area, and qualification effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTYHD3+T | Same pinout and package; open-drain RST output instead of push-pull; requires external pullup resistor | Suitable where µP reset pin tolerates open-drain drive or where level-shifting is needed | Select MAX6720UTYHD3+T only if system design already includes pullup on reset line or requires bidirectional reset I/O compatibility |
| TPS3808G33DBVR | Single-supply monitor (3.3V only); no VCC2 or RSTIN inputs; 200ms timeout; SOT23-6 package | Limited to single-rail supervision; cannot replace dual/third-supply monitoring function of MAX6724UTYHD3+T | Choose TPS3808G33DBVR only for cost-sensitive single-rail applications where VCC2/RSTIN functionality is unused |
Compared with MAX6724UTYHD3+T, MAX6720UTYHD3+T trades push-pull drive for open-drain flexibility but adds external component overhead, while TPS3808G33DBVR reduces feature set to single-rail monitoring-making it unsuitable as a functional replacement unless system architecture changes to eliminate VCC2 and RSTIN requirements.
Availability
MAX6724UTYHD3+T is available at Aetrix Electronics and suitable for industrial PLC power sequencing, telecom line card supervision, and embedded medical sensor hub designs requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +85°C operation.
Supply support for MAX6724UTYHD3+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MAX6715–MAX6729 family was designed specifically for compact, multivoltage microprocessor supervision in space-constrained embedded systems-emphasizing low quiescent current, precise factory-trimmed thresholds, and flexible reset output configurations.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6724UTYHD3+T?
The MAX6724UTYHD3+T has factory-trimmed reset thresholds of 4.625V for VCC1 and 3.075V for VCC2, with ±1.5% tolerance over temperature. These values are fixed by the "YH" suffix per Maxim's Reset Voltage Threshold Suffix Guide and do not require external resistor programming.
Does the MAX6724UTYHD3+T include a watchdog timer or power-fail functionality?
No, the MAX6724UTYHD3+T does not include a watchdog timer or power-fail input/output. Per Maxim's Selector Guide, it belongs to the MAX6723–MAX6724 subgroup, which provides triple-voltage monitoring (VCC1/VCC2/RSTIN) and manual reset-but omits WDI and PFI/PFO features present in MAX6728/MAX6729 variants.
What is the reset timeout period for the MAX6724UTYHD3+T, and is it adjustable?
The MAX6724UTYHD3+T has a fixed minimum reset timeout period of 210ms, indicated by the "D3" suffix in its part number. This value is factory-programmed and non-adjustable; no external capacitor or resistor modifies the timeout duration.
How is the third supply voltage monitored using RSTIN on the MAX6724UTYHD3+T?
The RSTIN pin on the MAX6724UTYHD3+T compares an externally applied voltage against an internal 626.5mV reference. To monitor a third supply (e.g., 1.2V), connect a resistor divider between that supply and GND, feeding the midpoint to RSTIN-setting VEXT_TH = 626.5mV × (R1 + R2)/R2.
What output type does the MAX6724UTYHD3+T use for its reset signal?
The MAX6724UTYHD3+T uses a push-pull active-low RST output referenced to VCC1. This eliminates the need for an external pullup resistor and provides strong logic-level drive-compatible with µPs requiring driven reset inputs rather than open-drain signaling.
MAX6724UTYHD3+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:
- 1.313V, 2.188V, 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-6
MAX6724UTYHD3+T FAQ
1.How can I place an order for MAX6724UTYHD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724UTYHD3+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 MAX6724UTYHD3+T reliable?
The price and inventory of MAX6724UTYHD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724UTYHD3+T is usually 5 days.
3.What payment methods are accepted for MAX6724UTYHD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724UTYHD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724UTYHD3+T?
MAX6724UTYHD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724UTYHD3+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 MAX6724UTYHD3+T?
For technical support, including MAX6724UTYHD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724UTYHD3+T requirements.
6.How does Aetrix verify that MAX6724UTYHD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6724UTYHD3+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 MAX6724UTYHD3+T meets industry standards.
7.What is the process for return or replacement of MAX6724UTYHD3+T?
All MAX6724UTYHD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724UTYHD3+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 MAX6724UTYHD3+T part is unused and in its original packaging.
Return procedure for MAX6724UTYHD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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