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Analog Devices Inc./Maxim Integrated MAX6718AUKTID5+T
- Part No.:
- MAX6718AUKTID5+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKTID5+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,901
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Product details
Overview
MAX6718AUKTID5+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 280ms minimum reset timeout, push-pull active-low RST output, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and industrial embedded controllers.
For engineers reviewing the MAX6718AUKTID5+T datasheet, MAX6718AUKTID5+T pinout, MAX6718AUKTID5+T application, or MAX6718AUKTID5+T equivalent, key selection criteria include dual-rail voltage monitoring capability, 280ms reset timeout period, push-pull RST output referenced to VCC1, manual-reset input with internal 50kΩ pullup, and operation across –40°C to +125°C.
Technical Context
The MAX6718AUKTID5+T implements independent dual-voltage supervision with separate comparators for VCC1 and VCC2, each with factory-trimmed thresholds (VTH1 = 4.625V typ, VTH2 = 3.075V typ), hysteresis of 0.5% of threshold, and 20µs propagation delay from supply drop to reset assertion. It guarantees correct reset logic state when either supply remains ≥0.8V.
This variant includes push-pull RST output (not open-drain), manual-reset input (MR), no watchdog or RSTIN/PFI functionality, and uses the D5 suffix indicating 280ms min reset timeout. Its pinout maps VCC1, VCC2, GND, MR, RST, and NC on a 6-pin SOT23-6 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Timeout Period | 280ms (min) - ensures sufficient hold time for processor initialization after power recovery |
| VCC1 Reset Threshold | 4.625V (typ), ±125mV tolerance - matches standard 5V rail supervision with margin for ripple |
| VCC2 Reset Threshold | 3.075V (typ), ±75mV tolerance - supports 3.3V I/O or core supply monitoring |
| Supply Current | 10µA (typ) at 3.6V - enables battery-backed systems with multi-year standby life |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup resistor; drives directly to VCC1 |
| Reset Valid Down To | VCC1 or VCC2 ≥ 0.8V - maintains deterministic reset behavior during brownout conditions |
Pinout & Package
MAX6718AUKTID5+T is housed in a 6-pin SOT23-6 package (package code U6+1), with thermal resistance θJA = 115°C/W on multilayer board. Pin functions are validated per Maxim's official pin description table for MAX6717A/MAX6718A variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low when VCC1 or VCC2 falls below threshold |
| 2 | GND | Ground reference for all internal comparators and output drivers |
| 3 | MR | Active-low manual-reset input with internal 50kΩ pullup to VCC1; forces reset when pulled low |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V); powers internal circuitry when > VCC1 and sets VCC2 threshold comparator reference |
| 5 | VCC1 | Primary supply input (1.8V–5.0V); powers device when > VCC2 and sets primary reset threshold |
| 6 | NC | No connect - internally unused; must be left floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 and VCC2 rails with separate thresholds avoids single-point failure in multirail systems |
| Factory-trimmed precision thresholds | VTH1 = 4.625V ±125mV and VTH2 = 3.075V ±75mV eliminate external resistor networks and calibration effort |
| Guaranteed reset validity to 0.8V | Ensures deterministic reset assertion even during deep brownout, critical for fail-safe industrial shutdown sequences |
| Low 10µA typical supply current | Reduces quiescent power in always-on subsystems such as remote sensors or backup controllers |
| Push-pull RST output | Drives reset line directly without external pullup, simplifying BOM and improving noise immunity over open-drain alternatives |
Applications
| Telecom Power Sequencing | Industrial PLC Controller Supervision |
|---|---|
|
Use Scenario: Monitoring 5V management rail and 3.3V FPGA I/O supply in base station power modules. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting reset if either rail drops during hot-swap or transient events. Use Value: Prevents FPGA configuration corruption by holding reset until both supplies stabilize post-power-up. |
Use Scenario: Ensuring safe startup and fault response in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary system monitor detecting undervoltage on CPU core (VCC2) and I/O (VCC1) supplies. Use Value: 280ms timeout provides margin for slow-ramping industrial DC-DC converters before releasing processor reset. |
| Automotive Body Control Module | Medical Diagnostic Equipment |
|
Use Scenario: Supervising 5V microcontroller supply and 3.3V CAN transceiver rail in vehicle body electronics. IC Role / Device Role / Timing Role: Fail-safe reset generator meeting AEC-Q100 requirements for extended temperature range. Use Value: Guaranteed operation down to VCC = 0.8V prevents spurious resets during cranking-induced battery sag. |
Use Scenario: Monitoring dual isolated power rails in portable ultrasound imaging units with battery backup. IC Role / Device Role / Timing Role: Low-current supervisor enabling >5-year shelf life in standby mode while ensuring clean boot on wake-up. Use Value: 10µA typical ICC extends battery runtime without compromising reset reliability during critical diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717AUKTID5+T | Open-drain RST output instead of push-pull; same thresholds and 280ms timeout | Requires external pullup resistor; suitable where level-shifting or wired-OR reset bus is needed | Select when interfacing with bidirectional μP reset pins or shared reset buses |
| TLV809E33DBZR | Single-supply (3.3V only), no VCC2 input, 200ms timeout, SOT23-3 package | Lacks dual-rail capability; intended for simpler 3.3V-only systems without secondary supply monitoring | Choose only for cost-sensitive, single-rail designs where VCC2 supervision is unnecessary |
Compared with MAX6717AUKTID5+T and TLV809E33DBZR, the MAX6718AUKTID5+T uniquely delivers dual-supply supervision with push-pull drive in a compact 6-pin SOT23, eliminating external components while supporting robust industrial and automotive brownout resilience.
Availability
MAX6718AUKTID5+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6718AUKTID5+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 demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for multivoltage systems where reliability, small footprint, and guaranteed operation down to 0.8V are essential.
FAQ
What is the reset timeout period of the MAX6718AUKTID5+T?
The MAX6718AUKTID5+T has a minimum reset timeout period of 280ms, as indicated by the "D5" suffix in its part number. This duration is guaranteed over the full –40°C to +125°C operating temperature range and ensures reliable processor initialization after power recovery or brownout events. The MAX6718AUKTID5+T does not offer adjustable timeout; it is factory-set.
Does the MAX6718AUKTID5+T support monitoring a third voltage rail?
No, the MAX6718AUKTID5+T does not support a third monitored voltage. It is a dual-supply supervisor with dedicated VCC1 and VCC2 inputs only. Models like MAX6719A or MAX6723A include the RSTIN pin for externally adjustable third-rail monitoring; the MAX6718AUKTID5+T omits this pin and functionality per its pinout and selector guide.
Is the MAX6718AUKTID5+T watchdog-capable?
No, the MAX6718AUKTID5+T does not include watchdog timer functionality. Watchdog input (WDI) is absent in this variant, as confirmed by its pin assignment (Pin 6 is NC, not WDI) and the MAX6717A/MAX6718A column in the official pin description table. Watchdog features are present only in MAX6721A–MAX6729A/MAX6797A variants.
What is the function of Pin 6 on the MAX6718AUKTID5+T?
Pin 6 of the MAX6718AUKTID5+T is a no-connect (NC) terminal. It is internally unconnected and must be left floating or tied to GND per PCB layout guidelines to avoid parasitic coupling. This distinguishes it from variants like MAX6728A (which uses Pin 6 for PFI) or MAX6721A (which uses Pin 6 for WDI).
Can the MAX6718AUKTID5+T operate with VCC1 = 1.8V and VCC2 = 1.2V?
Yes, the MAX6718AUKTID5+T supports VCC1 as low as 1.8V and VCC2 as low as 0.9V per datasheet specifications. Its reset comparators remain functional and guaranteed down to VCC1 or VCC2 = 0.8V, making it suitable for modern low-voltage SoC and FPGA power domains. The 4.625V VTH1 and 3.075V VTH2 thresholds apply only when those rails are within their nominal ranges.
MAX6718AUKTID5+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.388V, 3.075V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6718AUKTID5+T FAQ
1.How can I place an order for MAX6718AUKTID5+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKTID5+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 MAX6718AUKTID5+T reliable?
The price and inventory of MAX6718AUKTID5+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKTID5+T is usually 5 days.
3.What payment methods are accepted for MAX6718AUKTID5+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718AUKTID5+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718AUKTID5+T?
MAX6718AUKTID5+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKTID5+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 MAX6718AUKTID5+T?
For technical support, including MAX6718AUKTID5+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKTID5+T requirements.
6.How does Aetrix verify that MAX6718AUKTID5+T is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKTID5+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 MAX6718AUKTID5+T meets industry standards.
7.What is the process for return or replacement of MAX6718AUKTID5+T?
All MAX6718AUKTID5+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKTID5+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 MAX6718AUKTID5+T part is unused and in its original packaging.
Return procedure for MAX6718AUKTID5+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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