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Analog Devices Inc./Maxim Integrated MAX6718AUKTID3+T
- Part No.:
- MAX6718AUKTID3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKTID3+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,406
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Product details
Overview
MAX6718AUKTID3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory IC monitoring VCC1 (primary) and VCC2 (secondary) with factory-trimmed reset thresholds, 140ms minimum reset timeout, push-pull active-low RST output, and manual-reset input. It guarantees valid reset assertion down to VCC1 or VCC2 = 0.8V and operates across –40°C to +125°C for industrial and automotive power-rail monitoring.
For engineers reviewing the MAX6718AUKTID3+T datasheet, MAX6718AUKTID3+T pinout, MAX6718AUKTID3+T application, or MAX6718AUKTID3+T equivalent, this page delivers verified electrical specs, SOT23-6 pin mapping, dual-rail reset behavior, watchdog disable capability, and real-world multivoltage system integration guidance - all confirmed against Maxim's official MAX6715A–MAX6729A/MAX6797A datasheet Rev 6 (July 2019).
Technical Context
The MAX6718AUKTID3+T implements independent voltage comparators for VCC1 (1.8V–5.0V range) and VCC2 (0.9V–3.3V range), each with factory-trimmed thresholds and 0.5% hysteresis. Its internal reset timer asserts RST low for ≥140ms after all monitored supplies recover above their thresholds.
This variant features push-pull RST output referenced to VCC1, active-low manual-reset (MR) with 50kΩ internal pullup to VCC1, and no watchdog or RSTIN/PFI functionality - distinguishing it from MAX6721A/MAX6723A variants. It uses SOT23-6 packaging with pins assigned as VCC1, GND, MR, VCC2, RST, and RST2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Timeout Period | 140ms (min) - ensures sufficient hold time for μP initialization after brownout recovery |
| VCC1 Reset Threshold | 3.075V (typ) - factory-trimmed for 3.0V nominal supply monitoring with ±0.075V tolerance |
| VCC2 Reset Threshold | 1.388V (typ) - factory-trimmed for 1.35V secondary rail, enabling core voltage supervision |
| Supply Current | 14µA (typ at 3.6V) - ultra-low quiescent draw supports battery-backed systems |
| 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 and drives directly into μP reset pin |
| Minimum Valid VCC | 0.8V - guarantees correct reset logic state even during deep brownout conditions |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, thermal resistance θJA = 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC1 | Primary supply input | Powers device and monitors main system rail (1.8V–5.0V); reset triggers if falls below 3.075V |
| 2 - GND | Ground reference | Common return path for all internal comparators and output drivers |
| 3 - MR | Manual-reset input | Active-low signal with 50kΩ internal pullup to VCC1; forces reset when pulled ≤0.3×VCC1 |
| 4 - VCC2 | Secondary supply input | Monitors auxiliary rail (0.9V–3.3V); reset triggers if falls below 1.388V |
| 5 - RST | Active-low reset output | Push-pull driver referenced to VCC1; sinks ≥1.2mA at VCC1 ≥2.7V for direct μP interface |
| 6 - RST2 | Secondary reset output | Active-low push-pull output referenced to VCC2; asserted simultaneously with RST during fault |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of primary (VCC1) and secondary (VCC2) rails with separate thresholds and hysteresis |
| Guaranteed reset validity at low VCC | Operates correctly down to VCC1 or VCC2 = 0.8V - critical for brownout resilience in automotive ECUs |
| Push-pull RST/RST2 outputs | Eliminates external pullup resistors and reduces BOM count vs. open-drain alternatives |
| Immunity to short VCC transients | Withstands <20µs negative glitches without spurious reset - validated per Typical Operating Characteristics toc06 |
| Low supply current | 14µA typical at 3.6V enables >10-year battery life in always-on monitoring applications |
Applications
| Industrial PLC Power Management | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Monitoring 3.3V I/O rail and 1.35V microcontroller core supply in programmable logic controllers subject to wide ambient temperature swings. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to ARM Cortex-M7 MCU upon either rail undervoltage. Use Value: Prevents firmware corruption during 12V battery dip events by holding reset until both rails stabilize for ≥140ms. |
Use Scenario: Supervising 5V CAN transceiver supply and 1.2V domain controller core in body electronics modules exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Fault-detection circuit triggering hard reset of Infineon AURIX TC3xx when VCC1 drops below 3.075V or VCC2 falls below 1.388V. Use Value: Ensures deterministic startup after cold cranking by guaranteeing reset validity down to 0.8V on either rail. |
| Telecom Base Station FPGA Power Sequencing | Medical Infusion Pump Controller |
Use Scenario: Coordinating power-up sequence of Xilinx Kintex-7 FPGA banks (1.0V, 1.8V, 3.3V) in 4G/LTE remote radio units. IC Role / Device Role / Timing Role: Dual-supply monitor generating reset pulse only after both primary (3.3V) and secondary (1.35V) rails exceed thresholds for ≥140ms. Use Value: Eliminates need for discrete RC timing networks while meeting IEC 62304 Class C safety requirements for power-rail validation. |
Use Scenario: Supervising isolated 3.3V logic supply and 1.2V ARM-based pump motor controller in battery-powered infusion devices. IC Role / Device Role / Timing Role: Fail-safe reset generator that holds MCU in reset during lithium-ion battery voltage sag below 3.075V or 1.388V. Use Value: Meets ISO 14971 risk control requirements by preventing erratic motor actuation during low-battery conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717AUKTID3+T | Open-drain RST output; requires external pullup resistor | Used where level-shifting or wired-OR reset bus is needed | Select when interfacing with legacy μPs requiring open-drain reset signaling |
| TLV809E33DBZR | Single-supply (3.3V only), no VCC2 monitoring, no MR input, 200ms timeout | Limited to basic 3.3V rail supervision without auxiliary voltage tracking | Choose only for cost-sensitive single-rail designs where dual monitoring is unnecessary |
Compared with MAX6718AUKTID3+T, the MAX6717AUKTID3+T offers identical threshold accuracy and timing but mandates external pullup circuitry, while TLV809E33DBZR lacks VCC2 supervision and manual reset - making both unsuitable drop-in replacements for dual-rail, MR-enabled systems.
Availability
MAX6718AUKTID3+T is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, telecom base station FPGAs, and medical infusion pumps requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6718AUKTID3+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 systems where simultaneous monitoring of primary and secondary rails is essential for system reliability.
FAQ
What is the exact reset timeout period for MAX6718AUKTID3+T?
The MAX6718AUKTID3+T has a guaranteed minimum reset timeout period of 140ms (D3 suffix). This duration begins when VCC1 or VCC2 recovers above its respective threshold and ensures the microprocessor remains held in reset long enough to complete full initialization before releasing control. The actual timeout is typically 210ms at +25°C and varies within ±40% over temperature and supply voltage.
Does MAX6718AUKTID3+T support watchdog functionality?
No, MAX6718AUKTID3+T does not include watchdog timer functionality. It belongs to the MAX6717A/MAX6718A variant group, which omits WDI (watchdog input) and related circuitry. Watchdog capability is present only in MAX6721A–MAX6729A/MAX6797A variants. For MAX6718AUKTID3+T, reset is triggered solely by VCC1/VCC2 undervoltage, MR assertion, or power-fail conditions.
What are the factory-trimmed reset thresholds for MAX6718AUKTID3+T?
MAX6718AUKTID3+T has VCC1 threshold of 3.075V (typical, T-suffix) and VCC2 threshold of 1.388V (typical, I-suffix), per Maxim's Reset Voltage Threshold Suffix Guide. These values are laser-trimmed during production and guaranteed over –40°C to +125°C with ±0.075V and ±0.038V tolerances respectively, enabling precise supervision of 3.0V and 1.35V rails.
Can MAX6718AUKTID3+T monitor a third voltage rail?
No, MAX6718AUKTID3+T does not support third-rail monitoring. It lacks the RSTIN input required for externally adjustable threshold supervision. Third-voltage capability is exclusive to MAX6719A/MAX6720A/MAX6723A–MAX6727A variants. MAX6718AUKTID3+T is strictly a dual-supply supervisor with fixed VCC1 and VCC2 thresholds.
What is the maximum supply voltage rating for MAX6718AUKTID3+T?
MAX6718AUKTID3+T supports absolute maximum supply voltages of –0.3V to +6V on VCC1 and VCC2 pins, and –0.3V to +6V on all digital inputs (MR, RSTIN, PFI, WDI). However, functional operation is specified only from 0.8V to 5.5V for VCC1 and VCC2. Exceeding 5.5V risks permanent damage despite the higher absolute rating.
MAX6718AUKTID3+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:
- Active
- 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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6718AUKTID3+T FAQ
1.How can I place an order for MAX6718AUKTID3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKTID3+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 MAX6718AUKTID3+T reliable?
The price and inventory of MAX6718AUKTID3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKTID3+T is usually 5 days.
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MAX6718AUKTID3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKTID3+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 MAX6718AUKTID3+T?
For technical support, including MAX6718AUKTID3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKTID3+T requirements.
6.How does Aetrix verify that MAX6718AUKTID3+T is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKTID3+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 MAX6718AUKTID3+T meets industry standards.
7.What is the process for return or replacement of MAX6718AUKTID3+T?
All MAX6718AUKTID3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKTID3+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 MAX6718AUKTID3+T part is unused and in its original packaging.
Return procedure for MAX6718AUKTID3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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