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Analog Devices Inc./Maxim Integrated MAX6718AUKTID1+T
- Part No.:
- MAX6718AUKTID1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKTID1+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,327
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Product details
Overview
MAX6718AUKTID1+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory IC in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) supply rails with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 1.1ms minimum reset timeout, push-pull active-low RST output, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power management and industrial embedded controllers.
For engineers reviewing the MAX6718AUKTID1+T datasheet, MAX6718AUKTID1+T pinout, MAX6718AUKTID1+T application, or MAX6718AUKTID1+T equivalent, key selection considerations include its dual-rail monitoring capability, SOT23-6 footprint, push-pull reset logic, -40°C to +125°C operation, and compatibility with systems requiring fail-safe boot sequencing under brownout conditions.
Technical Context
The MAX6718AUKTID1+T integrates two independent voltage comparators with precision internal references (4.625V ±125mV for VCC1, 3.075V ±75mV for VCC2), a reset timeout timer with fixed 1.1ms (min) delay, and push-pull RST output referenced to VCC1. It asserts reset when either supply falls below its threshold and holds reset for the full timeout after recovery.
No watchdog, manual-reset, or RSTIN/PFI inputs are enabled on this variant - confirmed by suffix "D1" (reset timeout) and "T" (VTH1 = 4.625V) / "I" (VTH2 = 3.075V) per Maxim's Reset Voltage Threshold Suffix Guide and Selector Guide. Pin configuration is strictly 6-pin SOT23 with VCC1, VCC2, GND, MR (internally pulled up), RST, and RST2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (typ), ±125mV tolerance - ensures reliable reset assertion during 5V rail brownout before critical logic fails |
| VCC2 Reset Threshold | 3.075V (typ), ±75mV tolerance - supports stable supervision of 3.3V I/O or auxiliary rails |
| Reset Timeout Period | 1.1ms (min), 1.65ms (typ), 2.2ms (max) - provides sufficient hold time for microprocessor initialization without excessive boot delay |
| Supply Current | 15µA (typ) at 3.6V - enables use in always-on subsystems with minimal quiescent power impact |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial control, and telecom base station environments |
| Reset Output Type | Push-pull, active-low, referenced to VCC1 - eliminates need for external pull-up and ensures clean logic-level drive into μP reset pin |
| Minimum Valid VCC | 0.8V for VCC1 or VCC2 - guarantees correct reset state during deep brownout, supporting graceful shutdown sequences |
Pinout & Package
MAX6718AUKTID1+T is housed in a 6-pin SOT23-6 package (package code U6+1), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and thermal resistance θJA = 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage and holds for 1.1ms min after recovery |
| 2 | GND | System ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; forces reset when pulled low, held for full timeout after release |
| 4 | VCC2 | Secondary supply input powering VCC2 comparator and enabling dual-rail supervision; must be ≥0.8V for valid operation |
| 5 | VCC1 | Primary supply input powering core logic, RST driver, and VCC1 comparator; defines push-pull output high level (0.8×VCC1) |
| 6 | RST2 | Second active-low push-pull reset output referenced to VCC2; mirrors RST behavior but driven from VCC2 domain |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply monitoring | Simultaneous supervision of VCC1 (up to 5.5V) and VCC2 (up to 5.5V) with separate thresholds and hysteresis - prevents false resets from single-rail noise |
| Factory-trimmed precision thresholds | VTH1 = 4.625V (±125mV), VTH2 = 3.075V (±75mV) - eliminates external resistor networks and calibration overhead |
| Guaranteed reset validity at low VCC | Functional reset assertion and output logic integrity maintained even when VCC1 or VCC2 drops to 0.8V - enables robust brownout detection |
| Immunity to short VCC transients | Withstands negative-going VCC glitches ≤20µs (at 100mV overdrive) without spurious reset - reduces need for aggressive input filtering |
| SOT23-6 compact packaging | 2.9mm × 1.6mm footprint with 0.95mm pitch - fits space-constrained PCB layouts in portable and modular equipment |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring primary 5V backplane and secondary 3.3V FPGA I/O rail in carrier-grade line cards during hot-swap insertion. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to CPU and FPGA upon either rail dropout, with 1.1ms timeout ensuring deterministic boot alignment. Use Value: Prevents metastability and configuration corruption during partial power-up by enforcing strict voltage sequencing before firmware execution begins. |
Use Scenario: Supervising 24V-to-5V DC-DC converter output and isolated 3.3V logic supply in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Provides fail-safe reset initiation and hold-off during AC mains interruption or transient overload on field-side power stages. Use Value: Enables controlled I/O state freeze and safe shutdown via PLC firmware, avoiding relay chatter or sensor misreads during brownout events. |
| Automotive Body Control Units | Medical Diagnostic Imaging Subsystems |
Use Scenario: Monitoring battery-backed 5V microcontroller supply and 3.3V CAN transceiver rail in vehicle door modules operating across -40°C to +125°C ambient. IC Role / Device Role / Timing Role: Dual-threshold supervision with guaranteed operation at 0.8V VCC ensures reset remains valid during cranking-induced 6V battery dips. Use Value: Eliminates need for external brownout detectors and discrete reset generators, reducing BOM count and layout area in ASIL-B compliant designs. |
Use Scenario: Supervising 5V analog front-end supply and 3.3V digital signal processor rail in portable ultrasound probe electronics subject to ESD and thermal cycling. IC Role / Device Role / Timing Role: Push-pull RST and RST2 outputs drive reset pins of ADC and DSP simultaneously, eliminating timing skew between analog and digital domains. Use Value: Ensures atomic system reset across mixed-signal subsystems, preventing data corruption during power-up transients in Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717AUKTID1+T | Same SOT23-6 package and 1.1ms timeout, but VTH1 = 4.375V and VTH2 = 2.925V - lower thresholds for 4.5V/3.0V nominal rails | Targeted at systems using 4.5V main supply and 3.0V I/O, rather than 5V/3.3V; requires validation of margin against actual rail tolerances | Select when design uses tighter-tolerance 4.5V regulators and needs earlier reset assertion before 5V rail collapse |
| TLV809E33DBZR | Single-supply 3.3V supervisor in SOT23-3; no VCC2 monitoring, no RST2, no MR input, 200ms timeout - simpler function set and larger timing granularity | Only monitors one rail; lacks dual-rail coordination, manual reset, and fast 1.1ms response - insufficient for multivoltage sequencing | Use only for cost-sensitive, single-rail applications where dual monitoring is unnecessary and longer reset hold is acceptable |
Compared with MAX6717AUKTID1+T, MAX6718AUKTID1+T offers higher VCC1/VCC2 thresholds better matched to standard 5V/3.3V rails, while TLV809E33DBZR lacks dual-rail capability entirely - making MAX6718AUKTID1+T the only option among the three that guarantees coordinated reset across both supplies with sub-2ms timing precision.
Availability
MAX6718AUKTID1+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6718AUKTID1+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family was designed specifically for ultra-low-voltage, dual- and triple-rail microprocessor supervision in space-constrained, high-reliability systems - emphasizing precision threshold accuracy, wide temperature operation, and minimal quiescent current.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6718AUKTID1+T?
The MAX6718AUKTID1+T has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with a guaranteed range of 4.500V to 4.750V at 25°C. This value is fixed by the "T" suffix in the part number and applies across the full -40°C to +125°C operating temperature range with ±20ppm/°C tempco.
Does MAX6718AUKTID1+T support manual reset functionality?
Yes, MAX6718AUKTID1+T includes an active-low manual-reset input (MR) on pin 3, featuring an internal 50kΩ pullup to VCC1. Pulling MR low forces an immediate reset assertion, which remains active for the full 1.1ms (min) timeout period after MR returns high - enabling operator-initiated or test-system-triggered reboots.
What is the package type and pin count of MAX6718AUKTID1+T?
MAX6718AUKTID1+T is supplied in a 6-pin SOT23-6 package (outline 21-0058, land pattern 90-0175), measuring 2.9mm × 1.6mm with 0.95mm lead pitch. Its pinout includes VCC1, VCC2, GND, MR, RST, and RST2 - all verified from Maxim's official Pin Description table for the MAX6717A/MAX6718A variant group.
Can MAX6718AUKTID1+T monitor a third voltage rail?
No, MAX6718AUKTID1+T does not support third-rail monitoring. It is a dual-supply supervisor only. The RSTIN and PFI pins - required for adjustable or power-fail monitoring - are not implemented in this variant, as confirmed by absence of RSTIN/PFI functionality in the MAX6717A/MAX6718A column of the Pin Description table and lack of "A" or "W" suffixes indicating those features.
What is the maximum supply voltage the MAX6718AUKTID1+T can tolerate on VCC1 and VCC2?
MAX6718AUKTID1+T supports absolute maximum supply voltages of +6V on both VCC1 and VCC2 pins, as specified in the Absolute Maximum Ratings table. However, functional operation is guaranteed only from 0.8V to 5.5V per supply - exceeding 5.5V risks latch-up or permanent damage despite the 6V absolute rating.
MAX6718AUKTID1+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:
- 1.1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6718AUKTID1+T FAQ
1.How can I place an order for MAX6718AUKTID1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKTID1+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 MAX6718AUKTID1+T reliable?
The price and inventory of MAX6718AUKTID1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKTID1+T is usually 5 days.
3.What payment methods are accepted for MAX6718AUKTID1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718AUKTID1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718AUKTID1+T?
MAX6718AUKTID1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKTID1+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 MAX6718AUKTID1+T?
For technical support, including MAX6718AUKTID1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKTID1+T requirements.
6.How does Aetrix verify that MAX6718AUKTID1+T is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKTID1+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 MAX6718AUKTID1+T meets industry standards.
7.What is the process for return or replacement of MAX6718AUKTID1+T?
All MAX6718AUKTID1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKTID1+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 MAX6718AUKTID1+T part is unused and in its original packaging.
Return procedure for MAX6718AUKTID1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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