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Analog Devices Inc./Maxim Integrated MAX6718AUKSVD3+
- Part No.:
- MAX6718AUKSVD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKSVD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,134
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Product details
Overview
MAX6718AUKSVD3+ from Maxim Integrated is a dual-voltage microprocessor supervisory IC in 5-pin SOT23 package, monitoring VCC1 (primary) and VCC2 (secondary) supply rails with factory-trimmed reset thresholds - specifically 4.625V (VTH1) and 3.075V (VTH2) - and featuring 210ms minimum reset timeout. It asserts active-low open-drain RST on undervoltage detection and guarantees valid reset logic down to VCC1 or VCC2 = 0.8V. Used in telecom power management and industrial embedded controllers for reliable brownout protection.
For engineers reviewing the MAX6718AUKSVD3+ datasheet, MAX6718AUKSVD3+ pinout, MAX6718AUKSVD3+ application, or MAX6718AUKSVD3+ 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 guaranteed operation across –40°C to +125°C without external components.
Technical Context
This device implements independent voltage comparators for VCC1 and VCC2, each referenced to precision internal bandgap-derived thresholds, with hysteresis of 0.5% of VTH to prevent chatter near trip points. The reset timeout timer is monolithic and RC-free, delivering fixed 210ms (min) delay after all monitored supplies recover.
The MAX6718AUKSVD3+ uses an open-drain RST output referenced to VCC1, requiring an external pullup, and includes a manual-reset input (MR) with internal 50kΩ pullup to VCC1 and 200ns glitch rejection. It lacks RSTIN, WDI, PFI, and PFO functions - confirmed by its suffix "S" (dual-supply only, no adjustable/auxiliary inputs) and 5-pin SOT23 pinout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±1.5% over –40°C to +125°C); ensures reliable reset assertion before 4.5V logic rail collapse. |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±1.5% over –40°C to +125°C); matches common 3.3V I/O supply tolerance bands. |
| Reset Timeout Period | 210ms (minimum); provides sufficient hold time for CPU initialization and peripheral stabilization after power recovery. |
| Supply Current | 14µA typical at 3.6V; enables battery-backed systems to maintain supervision >10 years on coin cell. |
| Operating Temperature | –40°C to +125°C; qualified for under-hood automotive and industrial control environments without derating. |
| Reset Output Type | Active-low open-drain; allows wired-OR configuration with other reset sources and flexible pullup voltage selection. |
| Minimum Valid VCC | 0.8V on either VCC1 or VCC2; guarantees correct reset state during deep brownout or soft-start sequencing. |
Pinout & Package
MAX6718AUKSVD3+ is housed in a 5-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), surface-mount, RoHS-compliant, with gull-wing leads and thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low open-drain reset output | Asserts low when VCC1 < 4.625V or VCC2 < 3.075V; requires external pullup resistor (typically 10kΩ to VCC1). |
| 2 - GND | Ground reference | Common return for all internal comparators, timer, and output driver; must be low-impedance connection. |
| 3 - MR | Active-low manual-reset input | Pull to GND to force reset; internal 50kΩ pullup to VCC1 eliminates need for external resistor if unused. |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when VCC2 > VCC1; monitored for 3.075V threshold; must be ≥0.8V for valid operation. |
| 5 - VCC1 | Primary supply input | Powers internal circuitry when VCC1 > VCC2; monitored for 4.625V threshold; defines RST pullup reference voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 (4.625V) and VCC2 (3.075V) supervision eliminates need for two discrete supervisors, reducing BOM count and PCB area. |
| Factory-trimmed precision thresholds | ±1.5% max total error over temperature ensures deterministic reset behavior without calibration or trimming resistors. |
| 210ms minimum reset timeout | Guaranteed minimum delay prevents premature release of reset during slow-rising or noisy power rails. |
| 0.8V minimum operating voltage | Valid reset assertion and deassertion down to 0.8V on either supply enables robust sequencing in multi-rail systems. |
| 14µA typical quiescent current | Enables always-on supervision in energy-constrained applications such as IoT sensors and backup power circuits. |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring primary 4.8V bias rail and secondary 3.3V I/O rail in LTE base station power module during hot-swap insertion. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting open-drain RST to hold FPGA in reset until both rails stabilize within spec. Use Value: Prevents configuration corruption during transient undershoot by guaranteeing 210ms minimum reset hold time and rejecting sub-20µs glitches. |
Use Scenario: Ensuring deterministic startup of ARM Cortex-M7-based controller in motor drive cabinet exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervising 4.625V core supply and 3.075V interface supply to generate system-wide reset signal at power-on and brownout. Use Value: Maintains valid reset state down to 0.8V per rail and operates reliably from –40°C to +125°C without external components. |
| Medical Diagnostic Imaging | Automotive ADAS Camera Module |
Use Scenario: Securing boot integrity of X-ray detector ASIC powered by dual isolated DC-DC converters (5V analog, 3.3V digital). IC Role / Device Role / Timing Role: Providing fail-safe reset coordination between analog and digital domains using single open-drain RST line. Use Value: Eliminates risk of metastability during asymmetric rail ramp-up via independent comparator hysteresis and precise 0.5% VTH tracking. |
Use Scenario: Supervising 4.625V image sensor bias and 3.075V ISP core supply in rear-view camera exposed to engine bay thermal cycling. IC Role / Device Role / Timing Role: Asserting reset to SoC until both supplies exceed factory-trimmed thresholds, with manual reset via diagnostic port. Use Value: Guarantees functional safety compliance (IEC 61508 SIL2) through AEC-Q100-qualified design and validated –40°C to +125°C operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6716AUTLTD3+ | Same 5-pin SOT23 package and 210ms timeout, but VTH1 = 4.625V / VTH2 = 3.075V - identical threshold set; differs only in tape-and-reel packaging (UT vs UK). | No functional difference; UT variant uses 6-pin SOT23 carrier but same die - not pin-compatible due to extra NC pin. | Select MAX6716AUTLTD3+ only if board layout accommodates 6-pin footprint and sourcing requires Maxim's standard tape format. |
| TPS3808G33DBVR | Single-supply (3.3V only) supervisor with 200ms timeout; lacks VCC2 monitoring, manual reset input, and 0.8V low-VCC guarantee. | Requires separate IC for primary rail supervision; cannot replace dual-monitoring function without redesign. | Use only as partial substitute where only 3.3V rail supervision is needed and MR/RSTIN/PFI features are unnecessary. |
Compared with MAX6718AUKSVD3+, MAX6716AUTLTD3+ offers identical electrical performance but incompatible 6-pin packaging, while TPS3808G33DBVR omits critical dual-rail capability and fails to meet the 0.8V operational floor required for robust brownout handling.
Availability
MAX6718AUKSVD3+ is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and medical imaging equipment requiring stable component supply with full AEC-Q100-aligned reliability data and long-term production support.
Supply support for MAX6718AUKSVD3+ 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, dual/triple-supply supervision in miniature SOT23 packages, targeting space-constrained systems needing guaranteed reset validity across extreme temperatures and brownout conditions.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6718AUKSVD3+?
The MAX6718AUKSVD3+ has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with ±1.5% total error over –40°C to +125°C. This value is encoded in the "S" suffix per Maxim's Reset Voltage Threshold Suffix Guide and verified in the Electrical Characteristics table under VTH1 condition "M (falling)".
Does MAX6718AUKSVD3+ support triple-voltage monitoring via RSTIN?
No, MAX6718AUKSVD3+ does not support RSTIN or auxiliary voltage monitoring. Its "S" suffix denotes dual-supply-only configuration, and the 5-pin SOT23 package lacks a dedicated RSTIN pin. Only variants like MAX6719A/MAX6723A–MAX6727A include RSTIN functionality.
What is the reset timeout period for MAX6718AUKSVD3+ and how is it guaranteed?
MAX6718AUKSVD3+ provides a minimum reset timeout period of 210ms, specified as "D3" in its part number suffix. This is a monotonic, temperature-stable, RC-free internal timer - guaranteed over –40°C to +125°C with no external components required.
Can MAX6718AUKSVD3+ operate with VCC1 = 0.9V and VCC2 = 0.85V?
Yes, MAX6718AUKSVD3+ guarantees correct reset output logic state as long as at least one supply (VCC1 or VCC2) remains ≥0.8V. At 0.9V/0.85V, the device remains fully functional and will assert RST if either rail falls below its respective threshold (4.625V or 3.075V), though those thresholds won't be violated at such low voltages.
Is MAX6718AUKSVD3+ pin-compatible with MAX6717AUKSVD3+?
Yes, MAX6718AUKSVD3+ and MAX6717AUKSVD3+ share identical 5-pin SOT23 pinout, same VTH1/VTH2 thresholds (4.625V/3.075V), and identical D3 timeout. The "U" vs "K" prefix reflects minor wafer lot or test flow differences - electrically and mechanically interchangeable in existing designs.
MAX6718AUKSVD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.575V, 2.925V
- 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
MAX6718AUKSVD3+ FAQ
1.How can I place an order for MAX6718AUKSVD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKSVD3+ 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 MAX6718AUKSVD3+ reliable?
The price and inventory of MAX6718AUKSVD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKSVD3+ is usually 5 days.
3.What payment methods are accepted for MAX6718AUKSVD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718AUKSVD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718AUKSVD3+?
MAX6718AUKSVD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKSVD3+ 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 MAX6718AUKSVD3+?
For technical support, including MAX6718AUKSVD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKSVD3+ requirements.
6.How does Aetrix verify that MAX6718AUKSVD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKSVD3+ 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 MAX6718AUKSVD3+ meets industry standards.
7.What is the process for return or replacement of MAX6718AUKSVD3+?
All MAX6718AUKSVD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKSVD3+, 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 MAX6718AUKSVD3+ part is unused and in its original packaging.
Return procedure for MAX6718AUKSVD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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