My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6718AUKLTD3+T
- Part No.:
- MAX6718AUKLTD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6718AUKLTD3+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6718AUKLTD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 140ms minimum reset timeout, push-pull active-low RST output, and manual-reset input - deployed in telecom power systems to ensure reliable boot sequencing and brownout recovery.
For engineers reviewing the MAX6718AUKLTD3+T datasheet, MAX6718AUKLTD3+T pinout, MAX6718AUKLTD3+T application, or MAX6718AUKLTD3+T equivalent, key selection criteria include dual-rail voltage monitoring capability, guaranteed reset validity down to VCC = 0.8V, 140ms reset timeout period, push-pull RST logic compatibility with 3.3V/5V μP interfaces, and AEC-Q100-qualified variants for industrial-grade reliability.
Technical Context
The MAX6718AUKLTD3+T implements independent dual-voltage comparators with internal reference trimming, asserting reset when either VCC1 or VCC2 falls below its factory-set threshold (e.g., VTH1 = 3.075V typ, VTH2 = 2.925V typ), then holding reset for a fixed 140ms minimum timeout after both supplies recover. Its push-pull RST output is referenced to VCC1 and sinks ≥1.2mA at 2.7V.
It integrates a manual-reset input (MR) with internal 50kΩ pullup to VCC1, requiring only a momentary GND connection to force reset; MR-to-RST delay is 200ns, and glitch rejection is 100ns. No watchdog, RSTIN, PFI, or PFO functions are enabled in this variant - confirmed by suffix "D3" (140ms timeout) and "UKLT" (SOT23-6, push-pull RST, dual-supply, no auxiliary inputs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCC1: 0.8V–5.5V; VCC2: 0.8V–5.5V - ensures valid reset assertion during deep brownout down to 0.8V on either rail. |
| VCC1 Reset Threshold | 3.000V–3.150V (min–max, falling); typical 3.075V - factory-trimmed for 3.3V primary supply monitoring. |
| VCC2 Reset Threshold | 2.850V–3.000V (min–max, falling); typical 2.925V - factory-trimmed for 3.3V secondary or I/O supply monitoring. |
| Reset Timeout Period | 140ms (min), 210ms (typ), 280ms (max) - guarantees sufficient hold time for μP initialization and peripheral stabilization. |
| Supply Current | 10µA (typ) at 3.6V, ≤39µA (max) - enables use in battery-backed or low-power always-on subsystems. |
| Operating Temperature | −40°C to +125°C - qualified for extended industrial and automotive under-hood environments. |
| Reset Output Type | Push-pull, active-low RST referenced to VCC1 - eliminates need for external pullup and supports direct drive of 3.3V/5V μP reset pins. |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W (multilayer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST / RST1 | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR activation; holds for 140ms min after recovery. |
| 2 | GND | System ground reference for all internal comparators, timers, and output drivers. |
| 3 | MR | Active-low manual-reset input with internal 50kΩ pullup to VCC1; 200ns MR-to-RST delay; 1µs minimum pulse width required. |
| 4 | VCC2 | Secondary supply input powering VCC2 comparator and enabling dual-rail monitoring; must be ≥0.8V for valid reset operation. |
| 5 | VCC1 | Primary supply input powering core logic, RST driver, and MR pullup; defines RST high-level voltage (≥0.8×VCC1). |
| 6 | NC | No-connect pin - left unconnected per datasheet; not internally bonded or functional. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Simultaneous VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) supervision with separate factory-trimmed thresholds - eliminates need for two discrete supervisors. |
| Guaranteed reset validity down to 0.8V | Functional reset assertion and timing integrity maintained even as VCC1 or VCC2 drops to 0.8V - critical for graceful shutdown in deep brownout conditions. |
| Push-pull RST output | Drives low actively without external pullup; sinks ≥1.2mA at 2.7V - directly interfaces with standard μP reset pins without level-shifting or passive components. |
| Manual-reset with integrated pullup | Internal 50kΩ pullup to VCC1 eliminates external resistor; supports momentary switch-to-GND implementation with no debounce circuitry required. |
| Low quiescent current | 10µA typical at 3.6V - reduces system standby power by >90% vs. legacy supervisors, extending battery life in portable equipment. |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring primary 3.3V backplane supply and secondary 2.5V FPGA I/O rail in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to DSP and FPGA upon any rail collapse, with 140ms hold time ensuring full reinitialization. Use Value: Prevents metastability and configuration corruption during AC mains interruption or hot-swap events by enforcing deterministic power-up sequence. |
Use Scenario: Supervising 24V DC-DC converted 5V logic supply and isolated 3.3V sensor interface supply in modular I/O bases. IC Role / Device Role / Timing Role: Independent VCC1/VCC2 monitoring triggers reset if either supply dips below threshold due to load transients or aging capacitors. Use Value: Eliminates field failures caused by partial resets where only one subsystem recovers - ensures atomic restart of entire control chain. |
| Network Router Line Cards | Automotive Infotainment Head Units |
|
Use Scenario: Ensuring clean boot of multi-core SoC and Gigabit PHYs after 12V input fluctuation in enterprise routers. IC Role / Device Role / Timing Role: Push-pull RST directly drives SoC reset pin; MR allows service-mode forced reboot via front-panel button. Use Value: Reduces mean time to recovery (MTTR) from power glitches by guaranteeing reset pulse width exceeds SoC minimum requirement (≥100ms). |
Use Scenario: Monitoring 5V MCU supply and 3.3V display controller supply in head units exposed to automotive battery transients (-0.5V to +18V). IC Role / Device Role / Timing Role: Valid reset down to 0.8V prevents spurious resets during cranking (battery sag to ~6V), while 125°C rating supports under-dash mounting. Use Value: Meets ISO 7637-2 Pulse 4 immunity requirements by avoiding false resets during engine start, improving system robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717AUKLTD3+T | Open-drain RST output instead of push-pull; requires external pullup resistor. | Suitable where level translation or wired-OR reset bus is needed; incompatible with direct-drive μP reset pins. | Select MAX6717AUKLTD3+T only if system design already includes pullup or shares reset bus with other open-drain devices. |
| TPS3808G33DBVR | Single-supply (3.3V only), 200ms timeout, lower ICC (1.8µA), no VCC2 input or MR pin. | Limited to single-rail systems; lacks manual reset and dual-monitoring capability. | Choose TPS3808G33DBVR only for cost-sensitive, single-voltage applications where MR and secondary rail monitoring are unnecessary. |
Compared with MAX6717AUKLTD3+T and TPS3808G33DBVR, the MAX6718AUKLTD3+T uniquely delivers push-pull RST for direct μP interfacing, dual-rail monitoring with independent thresholds, and integrated MR - making it optimal for compact, high-reliability multivoltage systems where PCB space and reset timing determinism are critical.
Availability
MAX6718AUKLTD3+T is available at Aetrix Electronics and suitable for telecom power management, industrial PLC I/O modules, network router line cards, and automotive infotainment head units requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX6718AUKLTD3+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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, dual/triple-supply supervisory circuits in miniature SOT23 packages - engineered specifically for space-constrained, multirail systems needing guaranteed reset integrity down to 0.8V and extended temperature operation.
FAQ
What is the reset timeout period of the MAX6718AUKLTD3+T?
The MAX6718AUKLTD3+T has a minimum reset timeout period of 140ms, typical 210ms, and maximum 280ms. This fixed timeout is factory-programmed via the "D3" suffix and ensures sufficient hold time for microprocessor and peripheral initialization after power recovery or manual reset activation.
Does the MAX6718AUKLTD3+T support monitoring a third voltage rail?
No, the MAX6718AUKLTD3+T does not support a third voltage rail. It is a dual-supply supervisor with dedicated VCC1 and VCC2 inputs only. Models with RSTIN (e.g., MAX6719A) or PFI (e.g., MAX6728A) are required for triple-voltage or power-fail monitoring - the "UKLT" suffix confirms absence of these features.
What is the function of Pin 6 on the MAX6718AUKLTD3+T?
Pin 6 on the MAX6718AUKLTD3+T is a no-connect (NC) terminal. It is not internally bonded and must remain unconnected in the PCB layout. This is explicitly defined in the Pin Description table for the MAX6717A/MAX6718A variant group and verified in the SOT23-6 package drawing.
Is the MAX6718AUKLTD3+T compatible with 1.8V microcontrollers?
Yes, the MAX6718AUKLTD3+T supports 1.8V operation: VCC1 and VCC2 can each operate down to 0.8V, and its push-pull RST output drives high to ≥0.8×VCC1 - so with VCC1 = 1.8V, RST high is ≥1.44V, meeting standard 1.8V CMOS input thresholds. Reset assertion remains valid even if VCC1 sags to 0.8V.
What is the maximum sink current capability of the RST output on the MAX6718AUKLTD3+T?
The RST output of the MAX6718AUKLTD3+T sinks ≥1.2mA at VCC1 ≥ 2.7V (VOL ≤ 0.3V), and ≥3.2mA at VCC1 ≥ 4.5V (VOL ≤ 0.4V). This push-pull drive strength allows direct connection to most μP reset inputs without external buffering, unlike open-drain alternatives requiring pullup resistors.
MAX6718AUKLTD3+T 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:
- 3.075V, 4.625V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6718AUKLTD3+T FAQ
1.How can I place an order for MAX6718AUKLTD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6718AUKLTD3+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 MAX6718AUKLTD3+T reliable?
The price and inventory of MAX6718AUKLTD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6718AUKLTD3+T is usually 5 days.
3.What payment methods are accepted for MAX6718AUKLTD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6718AUKLTD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6718AUKLTD3+T?
MAX6718AUKLTD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6718AUKLTD3+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 MAX6718AUKLTD3+T?
For technical support, including MAX6718AUKLTD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6718AUKLTD3+T requirements.
6.How does Aetrix verify that MAX6718AUKLTD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6718AUKLTD3+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 MAX6718AUKLTD3+T meets industry standards.
7.What is the process for return or replacement of MAX6718AUKLTD3+T?
All MAX6718AUKLTD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6718AUKLTD3+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 MAX6718AUKLTD3+T part is unused and in its original packaging.
Return procedure for MAX6718AUKLTD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6718AUKLTD3+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
