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Analog Devices Inc./Maxim Integrated MAX6723UTYDD3
- Part No.:
- MAX6723UTYDD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6723UTYDD3.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:539
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Product details
Overview
The MAX6723UTYDD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (primary supply) and VCC2 (secondary supply) with factory-trimmed reset thresholds of 3.075V (VTH1) and 2.925V (VTH2), 210ms minimum reset timeout, and integrated watchdog timer with 35s startup/1.12s normal mode. It ensures reliable system reset during power-up, brownout, or software fault in battery-powered embedded controllers.
For engineers reviewing the MAX6723UTYDD3 datasheet, MAX6723UTYDD3 pinout, MAX6723UTYDD3 application, or MAX6723UTYDD3 equivalent, key selection criteria include dual-supply threshold accuracy, guaranteed reset validity down to 0.8V on either rail, low 14µA typical supply current, open-drain RST output referenced to VCC1, and watchdog disable-by-floating WDI capability.
Technical Context
The MAX6723UTYDD3 implements dual 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 reset logic remains valid as long as VCC1 or VCC2 ≥ 0.8V, enabling operation during deep brownout conditions.
It integrates a dual-mode watchdog timer: 35s minimum initial timeout after any reset event (power-up/manual/watchdog), followed by 1.12s minimum normal timeout after first WDI transition. The RSTIN input supports externally adjustable third-voltage monitoring at 626.5mV reference, with 100nA max input leakage and 22µs propagation delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 3.075V (typ), factory-trimmed for precise primary supply monitoring |
| VCC2 Reset Threshold | 2.925V (typ), factory-trimmed for secondary supply validation |
| Reset Timeout Period | 210ms (min), ensures µP completes initialization before release |
| Supply Current | 14µA (typ at 3.6V), enables ultra-low-power operation in battery systems |
| Watchdog Timeout | 1.12s (min normal mode), provides rapid fault detection during runtime |
| Operating Temperature | -40°C to +125°C, suitable for automotive and industrial under-hood applications |
| RST Output Type | Open-drain, requires external pullup, referenced to VCC1 for flexible level-shifting |
Pinout & Package
MAX6723UTYDD3 is housed in a 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts in portable and industrial electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST/RST1 | Active-low open-drain reset output referenced to VCC1; asserts when VCC1/VCC2 drop below thresholds or MR pulled low |
| 2 | GND | Ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; forces reset when pulled low |
| 4 | VCC2 | Secondary supply input powering comparator for VCC2 monitoring and RST2 generation |
| 5 | VCC1 | Primary supply input powering core logic and VCC1 comparator; determines RST output reference |
| 6 | RSTIN | Adjustable reset input with 626.5mV internal reference; enables third-voltage monitoring via resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneous monitoring of VCC1 (1.58–4.63V range) and VCC2 (0.79–3.08V range) with separate thresholds |
| Guaranteed reset validity down to 0.8V | Ensures deterministic reset behavior even during severe brownout on either supply rail |
| Immunity to short VCC transients | Rejects glitches ≤20µs duration at 75mV overdrive, preventing spurious resets |
| Low-leakage RSTIN input | 100nA max input current enables high-impedance resistor dividers for minimal power loss |
| Watchdog disable by floating WDI | No external components needed; internal 200nA current source detects unconnected state |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: A wireless sensor node powered by a single Li-ion cell (3.0–4.2V) with 1.8V MCU core supply and 3.3V sensor interface rail. IC Role / Device Role / Timing Role: MAX6723UTYDD3 monitors both 3.3V sensor rail (VCC1 = 3.3V, VTH1 = 3.075V) and 1.8V core rail (VCC2 = 1.8V, VTH2 = 2.925V scaled via divider), asserting reset if either drops below threshold. Use Value: Prevents MCU lockup during battery discharge by triggering reset at 3.075V/2.925V thresholds, while 210ms timeout allows full firmware boot sequence. | Use Scenario: An industrial programmable logic controller with isolated 24V DC input stage and 5V/3.3V internal logic rails. IC Role / Device Role / Timing Role: Supervises 5V main logic supply (VCC1) and 3.3V FPGA configuration rail (VCC2), using RSTIN to monitor auxiliary 12V power-good signal. Use Value: Dual-threshold supervision ensures safe FPGA configuration before logic execution; RSTIN's 626.5mV reference enables accurate 12V monitoring with <1% error. |
| Automotive Body Control Module | Medical Portable Diagnostic Device |
Use Scenario: Under-hood BCM operating from 9–16V battery with 5V microcontroller and 3.3V CAN transceiver supplies. IC Role / Device Role / Timing Role: Monitors 5V MCU rail (VCC1) and 3.3V CAN rail (VCC2) across -40°C to +125°C, leveraging guaranteed operation down to 0.8V on either rail. Use Value: Maintains reset integrity during cold-crank events where battery dips to 6V, ensuring MCU reset assertion even when 5V regulator output sags to 0.9V. | Use Scenario: Handheld ultrasound device with 3.7V LiPo battery, 3.3V analog front-end, and 1.2V digital core. IC Role / Device Role / Timing Role: Uses VCC1 for 3.3V AFE monitoring and VCC2 for 1.2V core monitoring, with RSTIN tracking battery voltage via resistor divider for low-battery warning. Use Value: 14µA typical supply current extends battery life; 210ms reset timeout accommodates slow-starting analog circuits without premature release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6724UTYDD3 | Push-pull RST output instead of open-drain; same thresholds and timeout | Eliminates need for external pullup resistor but requires VCC1-referenced load | Select when board layout constraints prevent adding pullup or when driving CMOS inputs directly |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only); no VCC2 input or RSTIN; 200ms timeout | Lacks dual-rail monitoring and third-voltage capability; simpler BOM for single-rail systems | Choose only for cost-sensitive single-supply designs where VCC2/RSTIN functionality is unnecessary |
Compared with MAX6724UTYDD3, the MAX6723UTYDD3 offers open-drain flexibility for level-shifting and mixed-voltage systems, while TPS3808G33DBVR reduces component count in single-rail applications but sacrifices critical dual-supply fault coverage.
Availability
MAX6723UTYDD3 is available at Aetrix Electronics and suitable for battery-powered IoT nodes, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges.
Supply support for MAX6723UTYDD3 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 power, sensing, and connectivity in demanding environments.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits targeting space-constrained, low-power embedded systems requiring dual-rail monitoring and watchdog safety features.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6723UTYDD3?
The MAX6723UTYDD3 has a factory-trimmed VCC1 reset threshold of 3.075V (typical), with a guaranteed range of 3.000V to 3.150V at -40°C to +125°C. This value is encoded in the part number suffix 'D' per Maxim's Reset Voltage Threshold Suffix Guide and applies specifically to the MAX6723UTYDD3 variant.
Does the MAX6723UTYDD3 support monitoring a third voltage supply?
Yes, the MAX6723UTYDD3 supports third-voltage monitoring via its RSTIN pin, which features a precise 626.5mV (typ) internal reference. By connecting an external resistor divider between the target supply and ground, users can set custom trip points down to 0.62V - a capability confirmed in the Electrical Characteristics table and Detailed Description section of the MAX6723UTYDD3 datasheet.
What is the watchdog timeout behavior of the MAX6723UTYDD3 after power-up?
The MAX6723UTYDD3 implements a dual-mode watchdog: after any reset event (including power-up), it enters a 35s minimum startup period before transitioning to 1.12s minimum normal timeout. This architecture allows complex firmware initialization during boot while providing rapid fault detection during steady-state operation - a verified feature documented in the Watchdog Input section of the MAX6723UTYDD3 datasheet.
Can the MAX6723UTYDD3 operate reliably when VCC1 drops below 1.0V?
Yes, the MAX6723UTYDD3 guarantees valid reset output logic down to VCC1 = 0.8V or VCC2 = 0.8V, as explicitly stated in the General Description and Absolute Maximum Ratings sections. This brownout resilience ensures deterministic reset assertion even during severe supply sag, a key differentiator validated across the full -40°C to +125°C temperature range.
What package type and pin count does the MAX6723UTYDD3 use?
The MAX6723UTYDD3 uses a 6-pin SOT23 package (2.9mm × 1.6mm footprint), as confirmed by the Ordering Information table and Pin Configurations section. This compact outline matches the MAX6715A–MAX6729A family's standard 6-pin SOT23 variant, with pins assigned to RST, GND, MR, VCC2, VCC1, and RSTIN per the official pinout diagram.
MAX6723UTYDD3 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:
- 0.788V, 2.188V, Adj
- Output:
- Open Drain or Open Collector
- 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
MAX6723UTYDD3 FAQ
1.How can I place an order for MAX6723UTYDD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6723UTYDD3 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 MAX6723UTYDD3 reliable?
The price and inventory of MAX6723UTYDD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6723UTYDD3 is usually 5 days.
3.What payment methods are accepted for MAX6723UTYDD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6723UTYDD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6723UTYDD3?
MAX6723UTYDD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6723UTYDD3 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 MAX6723UTYDD3?
For technical support, including MAX6723UTYDD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6723UTYDD3 requirements.
6.How does Aetrix verify that MAX6723UTYDD3 is sourced from the original manufacturer or authorized distributors?
All MAX6723UTYDD3 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 MAX6723UTYDD3 meets industry standards.
7.What is the process for return or replacement of MAX6723UTYDD3?
All MAX6723UTYDD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6723UTYDD3, 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 MAX6723UTYDD3 part is unused and in its original packaging.
Return procedure for MAX6723UTYDD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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