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Analog Devices Inc./Maxim Integrated MAX6718AUKTID6+T
- Part No.:
- MAX6718AUKTID6+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKTID6+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,471
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Product details
Overview
MAX6718AUKTID6+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 560ms 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 systems requiring reliable dual-rail voltage supervision.
For engineers reviewing the MAX6718AUKTID6+T datasheet, MAX6718AUKTID6+T pinout, MAX6718AUKTID6+T application, or MAX6718AUKTID6+T equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over -40°C to +125°C), low 14µA typical supply current at 3.6V, immunity to sub-20µs VCC transients, and compatibility with manual-reset, watchdog, and power-fail signaling in space-constrained SOT23-6 layouts.
Technical Context
The MAX6718AUKTID6+T implements independent dual-voltage monitoring using precision bandgap references for VCC1 and VCC2, with internal hysteresis (0.5% of VTH) and temperature coefficient of 20ppm/°C. It asserts reset when either supply falls below its trimmed threshold and holds reset for a fixed 560ms (min) timeout after both supplies recover.
This variant features push-pull RST output referenced to VCC1, MR input with 50kΩ internal pullup to VCC1, and no RSTIN, WDI, PFI, or PFO functionality - confirming it belongs to the MAX6717A/MAX6718A series subset optimized for dual-supply-only supervision without auxiliary inputs or watchdog.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (typ), factory-trimmed ±1.5%, ensures reliable reset assertion for 5V primary rails before brownout affects processor operation |
| VCC2 Reset Threshold | 3.075V (typ), factory-trimmed ±1.5%, enables precise supervision of 3.3V secondary supplies in multirail systems |
| Reset Timeout Period | 560ms (min), guarantees sufficient hold time for full system initialization after power recovery |
| Supply Current | 14µA (typ) at 3.6V, minimizes quiescent load on battery-backed or low-power auxiliary rails |
| 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 RST, eliminates need for external pullup and provides rail-to-rail drive into μP reset pin |
| Minimum Valid VCC | 0.8V on VCC1 or VCC2, ensures deterministic reset state during deep brownout or soft-start sequences |
Pinout & Package
MAX6718AUKTID6+T is housed in a 6-pin SOT23 package (package code U6+1), with 1.6mm × 2.9mm footprint and 1.1mm height, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST / RST1 | Active-low push-pull reset output referenced to VCC1; drives μP reset pin directly without external pullup |
| 2 | GND | System ground reference for all internal comparators and logic; must be low-impedance connection |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; momentary GND connection forces system reset |
| 4 | VCC2 | Secondary supply input (0.8V–5.5V); powers internal VCC2 comparator and sets RST2 reference if enabled |
| 5 | VCC1 | Primary supply input (0.8V–5.5V); powers device core, sets RST output reference, and enables VCC1 comparator |
| 6 | RST2 | Active-low push-pull reset output referenced to VCC2; provides independent reset signal for secondary domain logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Simultaneous supervision of VCC1 and VCC2 with separate thresholds and hysteresis prevents false resets during rail sequencing |
| Guaranteed reset validity at 0.8V | Ensures clean, predictable reset assertion even during severe brownout conditions where VCC drops near cutoff |
| Low 14µA supply current | Reduces standby power in always-on subsystems such as remote sensors or backup controllers |
| Immunity to short VCC transients | Rejects glitches <20µs duration, eliminating spurious resets caused by switching noise or ESD events |
| SOT23-6 package | Enables placement adjacent to µP or PMIC in compact 1U servers, PoE-powered edge devices, and portable instrumentation |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Supervising 5V main and 3.3V I/O rails in LTE small cell baseband boards during hot-swap insertion and AC brownout events. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to ARM Cortex-A53 and FPGA configuration logic upon any rail violation. Use Value: Prevents partial configuration and metastability by holding reset until both rails stabilize for ≥560ms post-recovery. |
Use Scenario: Monitoring isolated 24V DC-DC derived 5V logic and 3.3V sensor interface rails in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Providing fail-safe reset coordination between CPU, analog front-end, and CAN transceiver domains during undervoltage faults. Use Value: Eliminates need for discrete RC timers and dual comparators, reducing BOM count and layout area by >40%. |
| Automotive Infotainment Head Units | Medical Portable Diagnostic Devices |
Use Scenario: Ensuring clean boot of quad-core application processor and display controller after cold-cranking voltage dip (<6.5V) in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Dual-supply monitor generating reset pulse only when both 5V and 3.3V rails exceed factory-trimmed thresholds for ≥560ms. Use Value: Meets AEC-Q100 stress requirements while guaranteeing reset validity down to 0.8V on either rail during cranking transients. |
Use Scenario: Supervising battery-backed 3.3V MCU and 1.8V ADC supply rails in handheld ultrasound probes operating on Li-ion cells. IC Role / Device Role / Timing Role: Enabling graceful shutdown and data preservation by asserting reset before critical brownout thresholds are crossed. Use Value: 14µA typical ICC extends battery life beyond 12 months in standby mode without compromising supervision reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717AUKTID3+T | Same SOT23-6 package and dual-supply architecture, but 140ms reset timeout (vs. 560ms) | Better suited for fast-boot microcontrollers requiring shorter reset hold times | Select when system initialization completes in <200ms and longer timeouts risk missed boot windows |
| TLV809KDBZR | Single-supply 3.3V supervisor (SOT23-3), no VCC2 monitoring, 200ms timeout, 1.8µA ICC | Limited to single-rail systems; lacks MR input and push-pull drive strength | Choose only for cost-sensitive, space-constrained designs with one monitored rail and no manual reset requirement |
Compared with MAX6717AUKTID3+T and TLV809KDBZR, MAX6718AUKTID6+T uniquely delivers factory-trimmed dual-threshold supervision with long 560ms reset hold and robust push-pull drive - making it optimal for telecom and industrial systems where timing margin, rail independence, and noise immunity are critical.
Availability
MAX6718AUKTID6+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6718AUKTID6+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) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications, with emphasis on reliability, low power, and integration.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits targeting multivoltage embedded systems where simultaneous monitoring of primary and secondary rails is essential for safe boot and fault recovery.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6718AUKTID6+T?
The MAX6718AUKTID6+T has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with ±1.5% tolerance over -40°C to +125°C. This value corresponds to the 'T' suffix in the reset voltage threshold coding and is validated per Maxim's production test flow. The threshold remains stable with 20ppm/°C tempco and includes 0.5% hysteresis to prevent chatter near trip point.
Does MAX6718AUKTID6+T support manual reset functionality?
Yes, MAX6718AUKTID6+T includes an active-low manual-reset (MR) input on Pin 3, featuring a 50kΩ internal pullup to VCC1. Pulling MR to GND for ≥1µs forces reset assertion, which remains active for the full 560ms timeout period after MR returns high. No external components are required, and MR accepts standard CMOS logic levels.
What package type and pin count does MAX6718AUKTID6+T use?
MAX6718AUKTID6+T uses a 6-pin SOT23 package (outline 21-0058, land pattern 90-0175), with 1.6mm × 2.9mm body size and 1.1mm max height. Its pinout is fixed per the MAX6717A/MAX6718A variant group: Pins 1/RST, 2/GND, 3/MR, 4/VCC2, 5/VCC1, 6/RST2 - confirmed in Maxim's official pin description table.
Can MAX6718AUKTID6+T monitor a third voltage rail?
No, MAX6718AUKTID6+T does not support third-rail monitoring. It belongs to the MAX6717A/MAX6718A series, which provides only dual-supply supervision (VCC1 and VCC2) and lacks RSTIN, WDI, PFI, or PFO pins. For triple-voltage monitoring, consider MAX6719A or MAX6723A variants with RSTIN input and adjustable threshold.
What is the minimum supply voltage at which MAX6718AUKTID6+T guarantees valid reset output logic?
MAX6718AUKTID6+T guarantees correct reset output logic state when either VCC1 or VCC2 remains ≥0.8V. Below this, reset behavior is not specified. This 0.8V specification enables reliable operation during deep brownout conditions common in automotive cold-crank and industrial power interruption scenarios.
MAX6718AUKTID6+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:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6718AUKTID6+T FAQ
1.How can I place an order for MAX6718AUKTID6+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKTID6+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 MAX6718AUKTID6+T reliable?
The price and inventory of MAX6718AUKTID6+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKTID6+T is usually 5 days.
3.What payment methods are accepted for MAX6718AUKTID6+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718AUKTID6+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718AUKTID6+T?
MAX6718AUKTID6+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKTID6+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 MAX6718AUKTID6+T?
For technical support, including MAX6718AUKTID6+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKTID6+T requirements.
6.How does Aetrix verify that MAX6718AUKTID6+T is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKTID6+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 MAX6718AUKTID6+T meets industry standards.
7.What is the process for return or replacement of MAX6718AUKTID6+T?
All MAX6718AUKTID6+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKTID6+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 MAX6718AUKTID6+T part is unused and in its original packaging.
Return procedure for MAX6718AUKTID6+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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