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Analog Devices Inc./Maxim Integrated MAX6718UKRVD3
- Part No.:
- MAX6718UKRVD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718UKRVD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,485
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Product details
Overview
MAX6718UKRVD3 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 - used in battery-powered IoT sensors and industrial microcontroller systems for reliable power-up sequencing and brownout protection.
For engineers reviewing the MAX6718UKRVD3 datasheet, MAX6718UKRVD3 pinout, MAX6718UKRVD3 application, or MAX6718UKRVD3 equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), ultra-low 14µA typical supply current at 3.6V, immunity to sub-20µs VCC transients, and compatibility with 1.2V core logic interfaces.
Technical Context
The MAX6718UKRVD3 implements dual independent voltage comparators with internal 20ppm/°C tempco and 0.5% hysteresis referenced to VTH, driving a monostable reset timer with fixed 210ms (min) timeout. Its push-pull RST output is referenced to VCC1 and sinks up to 3.2mA at 4.5V, while internal 50kΩ MR pullup enables direct switch interface without external components.
It operates across -40°C to +125°C with full functionality guaranteed down to 0.8V on either supply rail, and features glitch-immune reset assertion timing (20µs VCC-to-RST delay) and no external capacitor requirement for reset timeout stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 1.620V (typ), factory-trimmed for precise 1.8V system rail monitoring |
| VCC2 Threshold | 0.788V (typ), optimized for 0.9V core supply supervision |
| Reset Timeout | 210ms (min), ensures stable µP initialization before release |
| Supply Current | 14µA (typ at 3.6V), enables >10-year battery life in always-on sensor nodes |
| Operating Temp | -40°C to +125°C, qualified for under-hood automotive and industrial control environments |
| Reset Validity | Down to VCC1/VCC2 = 0.8V, prevents false releases during deep brownouts |
| Output Type | Push-pull active-low RST, eliminates need for external pullup resistor |
Pinout & Package
MAX6718UKRVD3 uses a 5-pin SOT23 package (2.9mm × 1.6mm × 1.1mm) with gull-wing leads, RoHS-compliant matte-tin plating, and thermal pad omitted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RST) | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2 undervoltage and holds for 210ms after recovery |
| 2 (GND) | Ground reference | Common return for all internal comparators, timer, and output stage |
| 3 (MR) | Manual-reset input | Active-low with internal 50kΩ pullup to VCC1; 1µs minimum pulse width required for reset assertion |
| 4 (VCC2) | Secondary supply input | Powers internal VCC2 comparator and sets secondary threshold reference; accepts 0.9V–3.3V |
| 5 (VCC1) | Primary supply input | Powers device core and primary comparator; accepts 1.8V–5.0V and references RST output |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of 1.8V I/O rail (VCC1) and 0.9V core rail (VCC2) with separate thresholds and hysteresis |
| Glitch-immune reset timing | 20µs VCC-to-RST propagation ensures no spurious resets from <20µs supply transients |
| Zero-external-component manual reset | Integrated 50kΩ MR pullup enables momentary switch connection directly to GND without external resistors |
| Ultra-low quiescent current | 14µA typical at 3.6V supports energy harvesting and coin-cell applications |
| Extended low-voltage operation | Valid reset assertion and deassertion guaranteed down to 0.8V on either supply rail |
Applications
| Industrial PLC I/O Modules | Battery-Powered Wireless Sensors |
|---|---|
Use Scenario: Programmable logic controller modules operating in harsh factory environments with fluctuating 24V DC supplies converted to 3.3V/1.2V rails. IC Role / Device Role / Timing Role: Dual-supply supervisor ensuring µP reset remains asserted until both 3.3V I/O and 1.2V core supplies stabilize post-power-up or brownout. Use Value: Prevents firmware corruption by enforcing 210ms minimum reset hold time and rejecting transients <20µs - critical for deterministic real-time control. | Use Scenario: LoRaWAN node powered by CR2032 coin cell, requiring multi-year operation with periodic wake-up and sensor readout. IC Role / Device Role / Timing Role: Low-current supervisor monitoring 3.0V regulator output (VCC1) and 1.8V MCU core (VCC2) to guarantee clean boot before radio transmission. Use Value: 14µA supply current extends battery life beyond 10 years; 0.8V reset validity ensures reliable operation even as battery discharges to endpoint. |
| Automotive Body Control Units | Medical Wearable Monitors |
Use Scenario: Under-dash body control module exposed to -40°C cold cranking and +125°C engine bay temperatures. IC Role / Device Role / Timing Role: Temperature-hardened dual supervisor validating 5.0V CAN transceiver supply (VCC1) and 3.3V microcontroller supply (VCC2) across full automotive grade range. Use Value: -40°C to +125°C operation with 20ppm/°C threshold drift ensures consistent reset behavior without calibration - meeting AEC-Q100 stress requirements. | Use Scenario: ECG patch continuously monitoring patient heart activity with strict FDA-required fault detection and recovery. IC Role / Device Role / Timing Role: Safety-critical supervisor asserting reset if either 3.3V analog front-end supply or 1.2V digital processor supply deviates beyond ±3%. Use Value: Factory-trimmed 1.620V/0.788V thresholds provide ±1.5% accuracy over temperature, enabling compliance with IEC 62304 software safety classification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G18DBVR | Single-supply only (VDD only); 1.8V fixed threshold; 200ms timeout; open-drain RST | Lacks VCC2 monitoring capability; requires external pullup; not suitable for dual-rail systems | Select only when supervising one supply rail and board space allows external pullup resistor |
| ADM6718AKSZ-REEL7 | Same 5-pin SOT23 package; 1.63V/0.79V thresholds; 200ms timeout; push-pull RST; -40°C to +125°C | Nearly identical electrical specs but different reset timeout suffix (D3 vs D2) and manufacturer-specific tempco (25ppm/°C vs 20ppm/°C) | Drop-in alternative where 200ms timeout is acceptable and ADI sourcing preferred |
Compared with TPS3808G18DBVR and ADM6718AKSZ-REEL7, MAX6718UKRVD3 uniquely provides factory-trimmed dual-threshold supervision in a single 5-pin SOT23 with guaranteed 210ms timeout and 0.8V reset validity - eliminating design compromises in space-constrained, multi-rail embedded systems.
Availability
MAX6718UKRVD3 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, battery-powered wireless sensors, and automotive body control units requiring stable component supply with guaranteed long-term availability and extended temperature support.
Supply support for MAX6718UKRVD3 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 medical applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, dual/triple-supply supervision in miniature SOT23 packages - engineered specifically for space-constrained, battery-operated, and high-reliability embedded systems requiring guaranteed reset behavior across extreme temperatures.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on MAX6718UKRVD3?
The MAX6718UKRVD3 has factory-trimmed VCC1 reset threshold of 1.620V (typical, ±1.5% over -40°C to +125°C) and VCC2 threshold of 0.788V (typical, ±1.5%). These values correspond to the "W" and "D" suffixes in Maxim's Reset Voltage Threshold Suffix Guide and are laser-trimmed during production for high accuracy without external calibration.
Does MAX6718UKRVD3 support manual reset functionality, and how is it implemented?
Yes, MAX6718UKRVD3 includes an active-low manual-reset input (MR) on Pin 3 with an internal 50kΩ pullup resistor to VCC1. Pulling MR low for ≥1µs forces reset assertion for the full 210ms timeout period. No external components are needed - a simple momentary switch from MR to GND suffices, and the input rejects <100ns glitches.
Can MAX6718UKRVD3 monitor a third voltage rail, and what are the limitations?
No, MAX6718UKRVD3 is a dual-supply supervisor only and does not include RSTIN or PFI inputs. It monitors only VCC1 and VCC2. For triple-voltage monitoring, select MAX6719AUKRVD3 (with RSTIN) or MAX6728AUKRVD3 (with PFI/PFO); MAX6718UKRVD3 lacks those pins and internal circuitry entirely.
What is the maximum load drive capability of the RST output on MAX6718UKRVD3?
The push-pull RST output on MAX6718UKRVD3 sinks up to 3.2mA at VCC1 = 4.5V (VOL ≤ 0.4V) and sources up to 800µA (VOH ≥ 0.8 × VCC1). This eliminates external pullup requirements and supports direct interfacing with 1.8V–5.0V logic families, including µP reset inputs with bidirectional I/O capability when used with a 4.7kΩ series resistor.
How does MAX6718UKRVD3 ensure reliable operation during power supply transients?
MAX6718UKRVD3 guarantees immunity to negative-going VCC transients <20µs in duration (per Typical Operating Characteristics Figure toc06), due to internal filtering and 20µs VCC-to-RST propagation delay. Combined with 0.5% threshold hysteresis and 20ppm/°C tempco, it prevents false resets during switching noise or cold-cranking events without requiring additional RC filtering.
MAX6718UKRVD3 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:
- 1.575V, 2.625V
- 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
MAX6718UKRVD3 FAQ
1.How can I place an order for MAX6718UKRVD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718UKRVD3 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 MAX6718UKRVD3 reliable?
The price and inventory of MAX6718UKRVD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718UKRVD3 is usually 5 days.
3.What payment methods are accepted for MAX6718UKRVD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718UKRVD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718UKRVD3?
MAX6718UKRVD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718UKRVD3 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 MAX6718UKRVD3?
For technical support, including MAX6718UKRVD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718UKRVD3 requirements.
6.How does Aetrix verify that MAX6718UKRVD3 is sourced from the original manufacturer or authorized distributors?
All MAX6718UKRVD3 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 MAX6718UKRVD3 meets industry standards.
7.What is the process for return or replacement of MAX6718UKRVD3?
All MAX6718UKRVD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718UKRVD3, 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 MAX6718UKRVD3 part is unused and in its original packaging.
Return procedure for MAX6718UKRVD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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