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Analog Devices Inc./Maxim Integrated MAX6718AUKSHD3+T
- Part No.:
- MAX6718AUKSHD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKSHD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,193
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Product details
Overview
MAX6718AUKSHD3+T from Maxim Integrated is a dual-supply microprocessor supervisory IC in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 140ms minimum reset timeout, push-pull active-low RST output, and manual-reset input. It ensures reliable system boot and brownout recovery in multivoltage embedded systems.
For engineers reviewing the MAX6718AUKSHD3+T datasheet, MAX6718AUKSHD3+T pinout, MAX6718AUKSHD3+T application, or MAX6718AUKSHD3+T equivalent, key selection criteria include dual-voltage monitoring capability, guaranteed reset validity down to VCC = 0.8V, push-pull RST output referenced to VCC1, 140ms timeout period, and AEC-Q100-qualified variants in the same family for automotive use cases.
Technical Context
This device implements independent voltage comparators for VCC1 and VCC2, each with ±0.5% hysteresis and 20ppm/°C tempco, feeding into a digital reset timeout timer with fixed 140ms (D3 suffix) delay. The internal 50kΩ MR pullup and push-pull RST driver eliminate external components for basic reset assertion.
It operates across -40°C to +125°C with supply current as low as 10µA at 3.6V, supports VCC1/VCC2 monitoring from 0.8V to 5.5V, and guarantees valid reset logic state even when either supply drops to 0.8V - critical for low-power brownout detection in battery-operated equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (typ), factory-trimmed for precise 4.5–4.75V primary supply monitoring |
| VCC2 Reset Threshold | 3.075V (typ), factory-trimmed for accurate 3.0–3.15V secondary supply monitoring |
| Reset Timeout Period | 140ms (min), D3 suffix - ensures sufficient hold time for processor initialization |
| Supply Current | 10µA (typ) at 3.6V - enables ultra-low-power operation in always-on subsystems |
| Operating Temperature | -40°C to +125°C - qualified for industrial and extended-temperature automotive applications |
| Reset Output Type | Push-pull, active-low RST referenced to VCC1 - eliminates need for external pullup resistor |
| MR Input Pullup | 50kΩ internal to VCC1 - simplifies manual-reset switch interface with no external components |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/RST1 | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR low; holds for 140ms after recovery |
| 2 - GND | Ground reference | Common return path for all internal comparators, timers, and output drivers |
| 3 - MR | Manual-reset input | Active-low; internal 50kΩ pullup to VCC1; reset remains active during MR low + full 140ms timeout after release |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when > VCC1; input to VCC2 comparator with 3.075V threshold |
| 5 - VCC1 | Primary supply input | Main power source; input to VCC1 comparator with 4.625V threshold; references RST and MR |
| 6 - NC | No connect | Not bonded; must be left floating - no electrical function or internal connection |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Simultaneous VCC1 (4.625V) and VCC2 (3.075V) supervision with separate comparators and hysteresis |
| Guaranteed reset validity to 0.8V | Ensures correct RST logic state even when either VCC1 or VCC2 drops to 0.8V - critical for deep brownout detection |
| Integrated MR pullup | 50kΩ internal resistor to VCC1 eliminates external component for momentary switch interface |
| Push-pull RST output | Drives active-low reset directly without external pullup - reduces BOM count and layout area |
| Immunity to short VCC transients | Rejects glitches <20µs duration at typical overdrive levels - prevents spurious resets during switching noise |
Applications
| Telecom Power Management | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring redundant 48V DC-DC converter outputs and 3.3V FPGA core rails in carrier-grade base station power modules. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either converter output falls below spec or FPGA rail sags during load transients. Use Value: Prevents corrupted configuration writes during undervoltage by holding processor in reset until both supplies stabilize for ≥140ms. |
Use Scenario: Ensuring deterministic startup and fault recovery in modular I/O controllers exposed to wide ambient temperature swings (-40°C to +85°C). IC Role / Device Role / Timing Role: Primary supervisor for 5V backplane and 2.5V logic supply, with manual reset for field service recovery. Use Value: Guarantees valid reset assertion down to 0.8V on either rail - essential for reliable operation during cold-start brownout conditions. |
| Automotive ADAS Camera Module | Medical Portable Monitor |
Use Scenario: Supervising 12V camera sensor bias and 1.8V image processor supply in AEC-Q100-compliant vision systems. IC Role / Device Role / Timing Role: Dual-voltage monitor with push-pull RST driving SoC reset pin; MR input for diagnostic mode entry. Use Value: Eliminates external pullup resistor on reset line - improves layout density and reduces failure modes in compact camera housings. |
Use Scenario: Managing power sequencing and brownout protection in battery-powered ECG/SpO₂ devices with dual Li-ion and regulated 3.3V rails. IC Role / Device Role / Timing Role: Low-quiescent-current (10µA) supervisor ensuring long standby life while guaranteeing reset during battery sag. Use Value: 140ms timeout provides ample margin for analog front-end stabilization before microcontroller wake-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717AUKSHD3+T | Open-drain RST output (vs. push-pull); requires external pullup resistor | Suitable where level-shifting or wired-OR reset bus is needed; less suitable for direct SoC reset pin drive | Select when interfacing to bidirectional μP reset pins or multi-drop reset buses |
| TLV809E33DBZR | Single-supply (3.3V only), no VCC2 monitoring, no MR input, 200ms timeout | Limited to single-rail systems; lacks dual-monitoring and manual reset functionality | Choose only for cost-sensitive, single-voltage applications without manual recovery needs |
Compared with MAX6718AUKSHD3+T, MAX6717AUKSHD3+T trades push-pull simplicity for open-drain flexibility, while TLV809E33DBZR sacrifices dual-supply coverage and MR support for lower unit cost in basic 3.3V-only designs.
Availability
MAX6718AUKSHD3+T is available at Aetrix Electronics and suitable for telecom power management, industrial PLC controllers, automotive ADAS modules, medical portable monitors, and set-top box designs requiring stable component supply across extended temperature ranges.
Supply support for MAX6718AUKSHD3+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 industrial, automotive, and communications markets.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, dual/triple-supply supervisory circuits in miniature SOT23 packages, designed specifically for space-constrained, multirail embedded systems demanding robust brownout detection and guaranteed reset integrity.
FAQ
What is the reset timeout period for MAX6718AUKSHD3+T?
The MAX6718AUKSHD3+T has a fixed minimum reset timeout period of 140ms, indicated by the 'D3' suffix in its part number. This delay begins when VCC1 or VCC2 falls below its respective threshold and ensures the microprocessor remains held in reset long enough for complete power stabilization and safe initialization before release. The timeout is guaranteed over the full -40°C to +125°C operating range.
Does MAX6718AUKSHD3+T support monitoring a third voltage rail?
No, MAX6718AUKSHD3+T is a dual-supply supervisor and does not include the RSTIN input required for adjustable third-rail monitoring. That feature is present only in variants like MAX6719A/MAX6720A (suffix 'S' or 'T') and MAX6723A–MAX6727A. MAX6718AUKSHD3+T monitors only VCC1 and VCC2 with factory-trimmed thresholds.
What is the function of Pin 6 (NC) on MAX6718AUKSHD3+T?
Pin 6 on MAX6718AUKSHD3+T is designated NC (No Connect) and is not internally bonded. It must be left unconnected on the PCB - neither tied to ground nor powered. This pin serves no electrical function and is a mechanical placeholder consistent with the SOT23-6 package outline used across the MAX6715A–MAX6729A family.
Can MAX6718AUKSHD3+T operate with VCC1 = 3.3V and VCC2 = 1.8V?
Yes, MAX6718AUKSHD3+T supports VCC1 and VCC2 supply voltages from 0.8V to 5.5V independently. Its factory-trimmed thresholds (4.625V on VCC1, 3.075V on VCC2) remain valid regardless of actual supply values - meaning it will correctly assert reset if VCC1 drops below 4.625V (e.g., from 5V to 4.5V) or VCC2 drops below 3.075V (e.g., from 3.3V to 3.0V), even when powered from lower rails.
Is MAX6718AUKSHD3+T AEC-Q100 qualified?
MAX6718AUKSHD3+T itself is not explicitly listed as AEC-Q100 qualified in the datasheet; however, the MAX6719AUTTWD1/V+T variant in the same family is AEC-Q100 Grade 2 qualified. For automotive applications requiring qualification, engineers should select that variant or consult Maxim/Analog Devices for formal qualification status of MAX6718AUKSHD3+T under specific test conditions.
MAX6718AUKSHD3+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:
- 1.313V, 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
MAX6718AUKSHD3+T FAQ
1.How can I place an order for MAX6718AUKSHD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKSHD3+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 MAX6718AUKSHD3+T reliable?
The price and inventory of MAX6718AUKSHD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKSHD3+T is usually 5 days.
3.What payment methods are accepted for MAX6718AUKSHD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718AUKSHD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718AUKSHD3+T?
MAX6718AUKSHD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKSHD3+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 MAX6718AUKSHD3+T?
For technical support, including MAX6718AUKSHD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKSHD3+T requirements.
6.How does Aetrix verify that MAX6718AUKSHD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKSHD3+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 MAX6718AUKSHD3+T meets industry standards.
7.What is the process for return or replacement of MAX6718AUKSHD3+T?
All MAX6718AUKSHD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKSHD3+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 MAX6718AUKSHD3+T part is unused and in its original packaging.
Return procedure for MAX6718AUKSHD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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