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Analog Devices Inc./Maxim Integrated MAX6723AUTVDD3+T
- Part No.:
- MAX6723AUTVDD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6723AUTVDD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,619
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Product details
Overview
MAX6723AUTVDD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) with factory-trimmed reset thresholds of 3.075V (VTH1) and 3.075V (VTH2), 14µA typical supply current at 3.6V, and 140ms minimum reset timeout period - used for reliable power-on reset and brownout detection in multivoltage embedded systems.
For engineers reviewing the MAX6723AUTVDD3+T datasheet, MAX6723AUTVDD3+T pinout, MAX6723AUTVDD3+T application, or MAX6723AUTVDD3+T equivalent, key selection criteria include dual-supply threshold matching (VTH1 = VTH2 = 3.075V), SOT23-6 footprint compatibility, 140ms reset timeout, RSTIN-adjustable third-voltage monitoring capability, and guaranteed reset validity down to VCC1/VCC2 = 0.8V.
Technical Context
The MAX6723AUTVDD3+T implements independent voltage comparators for VCC1 and VCC2, each referenced to internal precision bandgap references, with 0.5% hysteresis and 20ppm/°C tempco. It features an active-low open-drain RST output asserted when either supply falls below its threshold, maintained for 140ms after recovery.
This variant includes RSTIN input for externally adjustable third-voltage monitoring (626.5mV internal reference), manual-reset (MR) with 50kΩ internal pullup, and no watchdog or power-fail functions - distinguishing it from MAX6728A/MAX6729A variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 3.075V (typ), factory-trimmed T-suffix; ensures reliable reset assertion during 3.3V rail brownout |
| VCC2 Reset Threshold | 3.075V (typ), factory-trimmed T-suffix; matches VCC1 for symmetrical dual-rail monitoring |
| Reset Timeout Period | 140ms (min), D3-suffix; provides sufficient hold time for processor initialization sequences |
| Supply Current | 14µA (typ) at 3.6V; enables battery-backed operation in portable equipment |
| RSTIN Threshold | 626.5mV (typ); supports external resistor-divider for monitoring auxiliary voltages ≥0.62V |
| Operating Temperature | -40°C to +125°C; qualified for industrial and automotive under-hood applications |
| Reset Output Type | Active-low open-drain RST; requires external pullup, compatible with 1.8V–5V I/O domains |
Pinout & Package
SOT23-6 package (U6+1 package code), 1.6mm × 2.9mm × 1.1mm body, 0.95mm pitch, thermal resistance θJA = 115°C/W (multilayer board).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output; asserts low on VCC1/VCC2/RSTIN fault and holds for 140ms |
| 2 | GND | Ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual-reset input; internal 50kΩ pullup to VCC1; resets system when pulled low |
| 4 | VCC2 | Secondary supply input; powers internal circuitry when > VCC1 and sets VTH2 threshold |
| 5 | VCC1 | Primary supply input; powers device when > VCC2 and sets VTH1 threshold |
| 6 | RSTIN | Adjustable reset comparator input; monitors third voltage via resistor divider referenced to 626.5mV |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 and VCC2 supervision with matched 3.075V thresholds eliminates need for two discrete supervisors |
| Guaranteed reset validity down to 0.8V | Ensures deterministic reset behavior during deep brownout conditions before full power collapse |
| Low 14µA supply current | Reduces standby power in always-on subsystems and extends battery life in portable designs |
| RSTIN adjustable third-voltage monitor | Enables monitoring of auxiliary rails (e.g., 1.2V core, 1.8V I/O) without external comparator or reference |
| Immunity to short VCC transients | Rejects <20µs glitches below threshold, preventing spurious resets in noisy power environments |
Applications
| Industrial PLC Controller | Telecom Line Card |
|---|---|
Use Scenario: Dual-rail 3.3V/2.5V power domain in programmable logic controller with real-time Ethernet interface. IC Role / Device Role / Timing Role: Supervises both rails and asserts reset if either drops below 3.075V; 140ms timeout ensures FPGA configuration completes before CPU release. Use Value: Prevents partial configuration lockup by guaranteeing synchronized reset across mixed-voltage subsystems. |
Use Scenario: Hot-swappable line card with 3.3V management rail and 12V analog front-end, requiring precise power sequencing. IC Role / Device Role / Timing Role: Monitors 3.3V rail (VCC1) and 2.5V clock buffer rail (VCC2); RSTIN used to supervise 1.8V SerDes supply via resistor divider. Use Value: Enables single-chip triple-rail supervision without adding external components or layout area. |
| Automotive ADAS Camera Module | Medical Patient Monitor |
Use Scenario: Compact camera ECU powered by 3.3V main rail and 1.2V image sensor core, operating in -40°C to +105°C ambient. IC Role / Device Role / Timing Role: Provides AEC-Q100-aligned supervision (via family qualification) with 140ms reset hold time for SoC boot sequence. Use Value: Meets ASIL-B functional safety requirements for power integrity monitoring in vision systems. |
Use Scenario: Battery-powered bedside monitor with 3.3V MCU rail and 2.8V display driver rail, requiring ultra-low quiescent current. IC Role / Device Role / Timing Role: Dual-supply reset generator with 14µA ICC ensures >1-year shelf life on coin-cell backup. Use Value: Eliminates separate supervisor ICs while maintaining clinical-grade reliability and low-power operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6724AUTVDD3+T | Push-pull RST output (vs. open-drain); same thresholds, timeout, and pinout | Requires no external pullup; incompatible with bidirectional µP reset pins without series resistor | Select when driving CMOS inputs directly and board space prohibits pullup resistor placement |
| TPS3808G33DBVR | Single-supply (3.3V only), 200ms timeout, 2.5µA IQ, SOT23-6 | Lacks VCC2 monitoring and RSTIN input; not suitable for true dual-rail systems | Choose only for cost-sensitive single-rail applications where dual monitoring is unnecessary |
Compared with MAX6724AUTVDD3+T, the MAX6723AUTVDD3+T's open-drain RST offers safer interfacing with bidirectional µP reset pins, while the TPS3808G33DBVR trades dual-supply capability for lower quiescent current and simpler BOM - making MAX6723AUTVDD3+T optimal for compact, robust multivoltage supervision.
Availability
MAX6723AUTVDD3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, telecom line cards, automotive ADAS modules, medical patient monitors, and portable instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX6723AUTVDD3+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 high-performance analog and mixed-signal ICs for power, sensing, and interface applications, with emphasis on reliability and integration.
The MAX6715A–MAX6729A family delivers compact, ultra-low-power supervisory solutions for multivoltage embedded systems - specifically engineered to replace discrete reset circuits in space-constrained industrial, automotive, and communications equipment.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6723AUTVDD3+T?
The MAX6723AUTVDD3+T has factory-trimmed reset thresholds of 3.075V (typical) for both VCC1 and VCC2, corresponding to the 'T' suffix in the ordering code. The min/max range is 3.000V to 3.150V per the datasheet's VTH1 and VTH2 specifications under falling conditions. This ensures consistent brownout detection across both rails in 3.3V-based systems.
Does the MAX6723AUTVDD3+T include a watchdog timer or power-fail functionality?
No, the MAX6723AUTVDD3+T does not include watchdog timer or power-fail (PFI/PFO) functionality. It is a dual-supply supervisor with RSTIN-adjustable third-voltage monitoring only. Watchdog and PFI features appear in other variants like MAX6728A (watchdog + PFI) or MAX6729A (watchdog + PFI + push-pull RST). The MAX6723AUTVDD3+T pinout omits WDI and PFI pins entirely.
What is the function of the RSTIN pin on the MAX6723AUTVDD3+T, and how is it used?
The RSTIN pin on the MAX6723AUTVDD3+T is a high-impedance input referenced to a 626.5mV internal bandgap. It enables monitoring of a third voltage (e.g., 1.2V core) using an external resistor divider: VEXT = 626.5mV × (R1 + R2)/R2. When the divided voltage falls below 626.5mV, RST asserts. This allows flexible auxiliary rail supervision without adding external comparators.
Can the MAX6723AUTVDD3+T operate reliably at VCC1 or VCC2 = 0.8V?
Yes, the MAX6723AUTVDD3+T guarantees correct reset output logic state down to VCC1 or VCC2 = 0.8V - a critical feature for detecting early-stage brownout conditions before complete power collapse. Below 0.8V, reset behavior is not specified; for 0V operation, an external pulldown resistor on RST is recommended (though not required for standard use cases).
What package type and footprint does the MAX6723AUTVDD3+T use, and is it RoHS-compliant?
The MAX6723AUTVDD3+T uses the SOT23-6 package (U6+1 code), with 1.6mm × 2.9mm body size and 0.95mm lead pitch. The '+' in the part number indicates RoHS-compliant, lead-free finish. Land pattern number 90-0175 applies, and thermal resistance is θJA = 115°C/W on multilayer PCBs - enabling high-density placement in compact industrial and automotive layouts.
MAX6723AUTVDD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 0.788V, 1.575V, Adj
- Output:
- Open Drain or Open Collector
- 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
MAX6723AUTVDD3+T FAQ
1.How can I place an order for MAX6723AUTVDD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6723AUTVDD3+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 MAX6723AUTVDD3+T reliable?
The price and inventory of MAX6723AUTVDD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6723AUTVDD3+T is usually 5 days.
3.What payment methods are accepted for MAX6723AUTVDD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6723AUTVDD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6723AUTVDD3+T?
MAX6723AUTVDD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6723AUTVDD3+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 MAX6723AUTVDD3+T?
For technical support, including MAX6723AUTVDD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6723AUTVDD3+T requirements.
6.How does Aetrix verify that MAX6723AUTVDD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6723AUTVDD3+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 MAX6723AUTVDD3+T meets industry standards.
7.What is the process for return or replacement of MAX6723AUTVDD3+T?
All MAX6723AUTVDD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6723AUTVDD3+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 MAX6723AUTVDD3+T part is unused and in its original packaging.
Return procedure for MAX6723AUTVDD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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