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Analog Devices Inc./Maxim Integrated MAX6718UKVHD3
- Part No.:
- MAX6718UKVHD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718UKVHD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,178
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Product details
Overview
MAX6718UKVHD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 5-pin SOT23 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 210ms minimum reset timeout, push-pull active-low RST output, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V for embedded power sequencing in portable and industrial systems.
For engineers reviewing the MAX6718UKVHD3 datasheet, MAX6718UKVHD3 pinout, MAX6718UKVHD3 application, or MAX6718UKVHD3 equivalent, key selection criteria include dual-supply monitoring range, 210ms reset timeout, push-pull RST output logic, low 14µA typical supply current at 3.6V, and operation over –40°C to +125°C.
Technical Context
The MAX6718UKVHD3 implements independent voltage comparators for VCC1 and VCC2 with factory-trimmed thresholds, internal 210ms reset timeout timer, and push-pull RST output referenced to VCC1. It guarantees correct reset assertion when either supply remains ≥0.8V, enabling reliable brownout detection in low-voltage systems.
No watchdog, manual-reset, RSTIN, PFI, or PFO functions are present - this variant is a minimal dual-supply supervisor with fixed threshold suffix 'VH' (VTH1 = 3.075V, VTH2 = 2.925V) and timeout suffix 'D3' (210ms min), packaged in 5-pin SOT23-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.075V (typ), factory-trimmed for 3.3V I/O rail monitoring with ±1.5% tolerance |
| VCC2 Threshold | 2.925V (typ), factory-trimmed for 3.0V auxiliary rail monitoring |
| Reset Timeout | 210ms (min), ensures µP completes boot sequence before release |
| Supply Current | 14µA (typ) at 3.6V, enables battery-backed operation for >10 years in low-power systems |
| Operating Temp | –40°C to +125°C, qualified for under-hood automotive and industrial control environments |
| Reset Output | Push-pull active-low RST, eliminates need for external pullup and supports direct µP reset pin drive |
| Valid Reset Down To | VCC1 or VCC2 ≥ 0.8V, maintains deterministic reset state during deep brownout conditions |
Pinout & Package
Package: 5-pin SOT23-5, surface-mount, 2.9mm × 1.6mm footprint, 1.1mm height, RoHS-compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage and holds for 210ms after recovery |
| 2 | GND | Analog/digital ground reference for all internal comparators and timer circuits |
| 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 VCC2 comparator and sets RST2 reference if enabled |
| 5 | VCC1 | Primary supply input (1.8V–5.0V); powers device core, sets RST output reference, and enables VCC1 comparator |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply monitoring | Simultaneous VCC1 (3.075V) and VCC2 (2.925V) threshold detection with no shared timing dependency |
| Guaranteed reset validity at 0.8V | Ensures deterministic reset behavior during severe brownout-no undefined output states below 1.0V |
| Push-pull RST output | Eliminates external pullup resistor, reduces BOM count, and drives µP reset pins directly without signal contention |
| Low quiescent current | 14µA typical at 3.6V enables use in always-on subsystems with multi-year battery life |
| Extended temperature range | –40°C to +125°C operation supports deployment in engine control units, motor drives, and outdoor telecom equipment |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Monitoring 3.3V microcontroller supply and 2.8V sensor interface rail in programmable logic controller modules exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops below factory-trimmed thresholds, holding reset for 210ms to ensure clean µP restart after transient faults. Use Value: Prevents firmware corruption during voltage sags caused by relay switching or EMI, eliminating field failures in harsh factory-floor environments. | Use Scenario: Supervising primary 3.3V MCU domain and secondary 2.9V CAN transceiver supply in body control modules operating near engine compartments. IC Role / Device Role / Timing Role: Provides deterministic reset signaling with guaranteed operation down to VCC = 0.8V, ensuring safe shutdown during battery voltage collapse during cold cranking. Use Value: Meets ISO 16750-2 pulse 4 requirements for brownout immunity, reducing warranty claims from intermittent resets. |
| Medical Point-of-Care Devices | Industrial Motor Drives |
Use Scenario: Validating 3.0V display controller supply and 2.9V analog front-end supply in portable ultrasound devices powered by Li-ion batteries. IC Role / Device Role / Timing Role: Dual-threshold supervision with 210ms timeout prevents spurious resets during battery voltage dip during high-current transducer bursts. Use Value: Maintains clinical data integrity by avoiding mid-scan processor resets, satisfying IEC 62304 Class B software safety requirements. | Use Scenario: Monitoring 3.3V gate driver IC supply and 2.8V isolated feedback supply in servo drive inverters subject to high dv/dt noise. IC Role / Device Role / Timing Role: Push-pull RST output drives µP reset directly without external components, while 0.8V reset validity ensures robustness against supply coupling transients. Use Value: Eliminates need for RC debounce networks, reducing PCB area and improving EMC performance in compact drive enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717UKVHD3 | 5-pin SOT23, identical VTH1/VTH2 thresholds and D3 timeout, but open-drain RST output requiring external pullup | Suitable where µP reset pin tolerates open-drain drive or where level-shifting is needed | Select MAX6717UKVHD3 only if external pullup is acceptable and board layout allows added component |
| TLV809E30DBZR | Single-supply supervisor (3.0V threshold), SOT23-3, no VCC2 monitoring, no MR input, 200ms timeout | Limited to single-rail systems; cannot replace dual-monitoring function of MAX6718UKVHD3 | Use TLV809E30DBZR only in cost-sensitive, single-supply designs where secondary rail supervision is omitted |
Compared with MAX6717UKVHD3, MAX6718UKVHD3 eliminates the external pullup requirement via push-pull RST, reducing BOM count and layout complexity; compared with TLV809E30DBZR, it adds critical VCC2 monitoring and MR functionality essential for robust dual-rail embedded systems.
Availability
MAX6718UKVHD3 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body controllers, medical point-of-care devices, and industrial motor drives requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6718UKVHD3 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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage dual/triple supervisory circuits optimized for space-constrained, high-reliability systems requiring guaranteed reset behavior down to 0.8V supply levels.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6718UKVHD3?
The MAX6718UKVHD3 has a factory-trimmed VCC1 reset threshold of 3.075V (typical), with a guaranteed range of 3.000V to 3.150V at +25°C per the 'VH' suffix in the ordering code. This threshold is designed specifically for reliable supervision of standard 3.3V I/O rails under varying load and temperature conditions, and the MAX6718UKVHD3 maintains this accuracy with ±20ppm/°C tempco.
Does the MAX6718UKVHD3 support manual reset functionality?
Yes, the MAX6718UKVHD3 includes an active-low manual-reset input (MR) on Pin 3, featuring an internal 50kΩ pullup resistor to VCC1. Pulling MR low forces an immediate reset assertion, which remains active for the full 210ms timeout period after MR returns high. The MAX6718UKVHD3 does not require external debounce circuitry, making it suitable for direct switch interfacing in industrial and automotive applications.
What is the supply current consumption of the MAX6718UKVHD3 at 3.3V operation?
The MAX6718UKVHD3 draws 14µA typical supply current at 3.6V, and scales linearly with voltage - at 3.3V, ICC1 is approximately 12.8µA (typ). This ultra-low quiescent current enables multi-year operation from coin-cell batteries in always-on monitoring subsystems, and the MAX6718UKVHD3 maintains this efficiency across its full –40°C to +125°C operating range.
Can the MAX6718UKVHD3 monitor a 1.8V supply rail?
No - the MAX6718UKVHD3 is configured with fixed VCC2 threshold of 2.925V (suffix 'VH'), and its VCC2 input range is specified for 0.9V to 3.3V, but the internal comparator is trimmed only for 2.925V detection. It cannot reliably supervise a 1.8V rail; for that, a different variant such as MAX6718UKTWD3 (VTH2 = 1.710V) or MAX6720AUTLTD3 would be required. The MAX6718UKVHD3 is purpose-built for 3.0V–3.3V dual-rail systems.
What package type and dimensions does the MAX6718UKVHD3 use?
The MAX6718UKVHD3 uses a 5-pin SOT23-5 package measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant matte-tin plating. This compact footprint enables high-density placement on space-constrained PCBs in portable and automotive modules, and the MAX6718UKVHD3's thermal resistance (θJA = 220°C/W) supports operation up to +125°C ambient without heatsinking.
MAX6718UKVHD3 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:
- 1.313V, 1.575V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6718UKVHD3 FAQ
1.How can I place an order for MAX6718UKVHD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718UKVHD3 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 MAX6718UKVHD3 reliable?
The price and inventory of MAX6718UKVHD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718UKVHD3 is usually 5 days.
3.What payment methods are accepted for MAX6718UKVHD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718UKVHD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718UKVHD3?
MAX6718UKVHD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718UKVHD3 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 MAX6718UKVHD3?
For technical support, including MAX6718UKVHD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718UKVHD3 requirements.
6.How does Aetrix verify that MAX6718UKVHD3 is sourced from the original manufacturer or authorized distributors?
All MAX6718UKVHD3 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 MAX6718UKVHD3 meets industry standards.
7.What is the process for return or replacement of MAX6718UKVHD3?
All MAX6718UKVHD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718UKVHD3, 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 MAX6718UKVHD3 part is unused and in its original packaging.
Return procedure for MAX6718UKVHD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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