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Analog Devices Inc./Maxim Integrated MAX6718AUKTGD3+T
- Part No.:
- MAX6718AUKTGD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKTGD3+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,712
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Product details
Overview
MAX6718AUKTGD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (4.625V factory-trimmed threshold) and VCC2 (3.075V threshold), with 280ms reset timeout, push-pull active-low RST output, and manual-reset input. It ensures reliable system reset during power-up, brownout, or software fault in telecom and industrial embedded systems.
For engineers reviewing the MAX6718AUKTGD3+T datasheet, MAX6718AUKTGD3+T pinout, MAX6718AUKTGD3+T application, or MAX6718AUKTGD3+T equivalent, this page delivers verified electrical specs, thermal behavior at -40°C to +125°C, reset timing under VCC transients, watchdog disable capability, and validated alternative options for multivoltage supervision.
Technical Context
The MAX6718AUKTGD3+T implements dual independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), a 280ms monostable reset timeout timer, and push-pull RST output referenced to VCC1. It guarantees valid reset assertion down to VCC1 or VCC2 = 0.8V and features 20ppm/°C reset threshold tempco.
It includes an internal 50kΩ MR pullup, supports manual reset pulse widths ≥1µs, and provides glitch rejection of 100ns on MR. The device lacks RSTIN, PFI, PFO, and WDI functions-confirmed by its suffix "D3" (280ms timeout) and "AUKTG" (SOT23-6, push-pull RST, no watchdog/manual-reset-only variant per Selector Guide).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±125mV tolerance); asserts reset when primary supply drops below this level |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±75mV tolerance); monitors secondary supply independently |
| Reset Timeout Period | 280ms (min); ensures μP completes boot sequence before release from reset |
| Supply Current | 10µA (typ) at 3.6V; enables long battery life in portable equipment |
| Operating Temperature | -40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| Reset Output Type | Push-pull active-low RST; eliminates need for external pullup and drives directly into μP reset pin |
| MR Input Logic | Active-low with internal 50kΩ pullup to VCC1; requires <1µs pulse width for reliable assertion |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W (multilayer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; asserts low during fault and holds for 280ms after recovery |
| 2 - GND | Ground reference | Common return path for all internal comparators and logic; must be low-impedance |
| 3 - MR | Manual-reset input | Active-low; internal 50kΩ pullup to VCC1; resets system when pulled to GND for ≥1µs |
| 4 - VCC2 | Secondary supply input | Powers internal VCC2 comparator; monitored at 3.075V threshold; must be ≥0.8V for valid operation |
| 5 - VCC1 | Primary supply input | Powers device core and RST driver; monitored at 4.625V threshold; must be ≥0.8V for reset validity |
| 6 - NC | No connect | Unbonded pin; must remain floating; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (4.625V) and VCC2 (3.075V) with separate comparators and hysteresis |
| Guaranteed reset validity down to 0.8V | Ensures correct RST logic state even during deep brownout-critical for fail-safe embedded systems |
| Low 10µA supply current | Reduces standby power in always-on applications such as network edge devices and IoT gateways |
| Immunity to short VCC transients | Rejects glitches ≤20µs (at 100mV overdrive), preventing spurious resets in noisy power environments |
| MR glitch rejection | Filters noise spikes <100ns, eliminating false triggers from ESD or PCB coupling on manual-reset line |
Applications
| Telecom Line Cards | Industrial PLC Controllers |
|---|---|
Use Scenario: Monitoring dual rails (5V main, 3.3V I/O) in carrier-grade Ethernet switches during hot-swap events. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset across FPGA, PHY, and management MCU upon any rail collapse. Use Value: Prevents partial initialization and metastability by enforcing 280ms minimum reset hold time after rail recovery. |
Use Scenario: Supervising 24V DC-DC converted 5V logic and 3.3V CPU core supplies in modular I/O chassis. IC Role / Device Role / Timing Role: Fault-detection node triggering safe shutdown via PLC backplane reset bus when either supply dips below threshold. Use Value: Guarantees reset remains asserted down to 0.8V on either rail-enabling robust operation during brownout conditions. |
| Medical Diagnostic Imaging | Automotive ADAS Camera Modules |
Use Scenario: Power sequencing validation in ultrasound front-end ASICs requiring stable 5V analog and 3.3V digital supplies. IC Role / Device Role / Timing Role: Independent voltage monitor ensuring both domains power up within spec before releasing FPGA configuration reset. Use Value: Factory-trimmed thresholds eliminate calibration overhead; push-pull RST drives ASIC reset pin directly without external components. |
Use Scenario: Monitoring camera SoC's 5V input and 3.3V core in rear-view camera ECU exposed to automotive temperature cycling. IC Role / Device Role / Timing Role: High-temp supervisory guard ensuring processor reset during cold crank (low-battery) or load dump events. Use Value: -40°C to +125°C operation and 20ppm/°C tempco maintain threshold accuracy across full vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717AUKTGD3+T | Open-drain RST output (vs. push-pull); requires external pullup resistor | Suitable where reset line is shared with other open-drain devices or bidirectional μP pins | Select when system-level reset bus uses wired-OR topology or legacy μP requires open-drain interface |
| TPS3808G33DBVR | Single-supply (3.3V only), 200ms timeout, higher ICC (15µA typ), no MR input | Limited to 3.3V-only systems; lacks manual reset and dual-rail capability | Choose only for cost-sensitive, single-rail applications where MR and VCC2 monitoring are unnecessary |
Compared with MAX6717AUKTGD3+T and TPS3808G33DBVR, the MAX6718AUKTGD3+T uniquely delivers push-pull RST, dual-rail supervision with factory-trimmed thresholds, and MR support in a single SOT23-6 package-making it optimal for space-constrained, high-reliability multivoltage systems.
Availability
MAX6718AUKTGD3+T is available at Aetrix Electronics and suitable for telecom line cards, industrial PLC controllers, medical imaging subsystems, automotive ADAS modules, and battery-operated edge devices requiring stable component supply across extended temperature ranges.
Supply support for MAX6718AUKTGD3+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 supervisory circuits optimized for multivoltage embedded systems requiring guaranteed reset validity, low quiescent current, and AEC-Q100-ready reliability.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6718AUKTGD3+T?
The MAX6718AUKTGD3+T has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with ±125mV tolerance over temperature. This value is fixed by the "T" suffix in the Reset Voltage Threshold Suffix Guide and confirmed in the Electrical Characteristics table. The threshold remains stable with 20ppm/°C tempco, ensuring accuracy across the full -40°C to +125°C operating range. MAX6718AUKTGD3+T does not support adjustable thresholds.
Does MAX6718AUKTGD3+T include a watchdog timer or power-fail functionality?
No. MAX6718AUKTGD3+T omits watchdog input (WDI), power-fail input (PFI), and power-fail output (PFO) functions. Its suffix "AUKTG" maps to the SOT23-6 package with push-pull RST and manual reset only-verified against the Pin Description table and Selector Guide. For watchdog capability, consider MAX6721AUKTGD3+T; for PFI/PFO, select MAX6728AUKTGD3+T. MAX6718AUKTGD3+T is strictly a dual-supply supervisor with MR.
What is the function of Pin 6 (NC) on MAX6718AUKTGD3+T?
Pin 6 on MAX6718AUKTGD3+T is a no-connect (NC) terminal-unbonded and internally unused. It must remain unconnected and floating; soldering or routing to any net may cause mechanical stress or unintended coupling. This is confirmed in the Pin Description table, where Pin 6 is blank for MAX6717A/MAX6718A variants. MAX6718AUKTGD3+T relies solely on Pins 1–5 for RST, GND, MR, VCC2, and VCC1 operation.
Can MAX6718AUKTGD3+T monitor a 1.8V supply as VCC2?
Yes. MAX6718AUKTGD3+T supports VCC2 input from 0.8V to 5.5V, and its factory-trimmed VCC2 threshold is 3.075V-designed to supervise standard 3.3V rails. While it can accept 1.8V on VCC2, the 3.075V threshold will not trigger reset for 1.8V collapse. To monitor 1.8V, use a variant with "E" or "F" VCC2 suffix (e.g., 1.388V or 1.050V threshold). MAX6718AUKTGD3+T's fixed thresholds make it unsuitable for sub-3V secondary supply supervision.
What is the minimum pulse width required on MR to assert reset in MAX6718AUKTGD3+T?
The MR input on MAX6718AUKTGD3+T requires a minimum low pulse width of 1µs to reliably trigger reset, as specified in the Electrical Characteristics table. The device also provides 100ns glitch rejection, rejecting shorter noise spikes. MR has an internal 50kΩ pullup to VCC1, so leaving it open defaults to inactive (no reset). For manual reset, connect a momentary switch from MR to GND; no external debounce is needed. MAX6718AUKTGD3+T enforces this timing across -40°C to +125°C.
MAX6718AUKTGD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.11V, 3.075V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6718AUKTGD3+T FAQ
1.How can I place an order for MAX6718AUKTGD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKTGD3+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 MAX6718AUKTGD3+T reliable?
The price and inventory of MAX6718AUKTGD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKTGD3+T is usually 5 days.
3.What payment methods are accepted for MAX6718AUKTGD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718AUKTGD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718AUKTGD3+T?
MAX6718AUKTGD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKTGD3+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 MAX6718AUKTGD3+T?
For technical support, including MAX6718AUKTGD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKTGD3+T requirements.
6.How does Aetrix verify that MAX6718AUKTGD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKTGD3+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 MAX6718AUKTGD3+T meets industry standards.
7.What is the process for return or replacement of MAX6718AUKTGD3+T?
All MAX6718AUKTGD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKTGD3+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 MAX6718AUKTGD3+T part is unused and in its original packaging.
Return procedure for MAX6718AUKTGD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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