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Analog Devices Inc./Maxim Integrated MAX6716UTWGD3
- Part No.:
- MAX6716UTWGD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6716UTWGD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,421
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Product details
Overview
MAX6716UTWGD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms reset timeout, push-pull active-low RST output, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V. It supports telecom power systems, industrial controllers, and battery-powered edge devices requiring reliable dual-rail voltage supervision.
For engineers reviewing the MAX6716UTWGD3 datasheet, MAX6716UTWGD3 pinout, MAX6716UTWGD3 application, or MAX6716UTWGD3 equivalent, this page delivers verified electrical parameters, exact pin functions, real-world use cases, and validated alternative parts - all confirmed against Maxim's official documentation for the precise suffix D3 (210ms timeout) and TWG (VTH1=4.625V/VTH2=3.075V) configuration.
Technical Context
The MAX6716UTWGD3 implements dual independent voltage comparators with factory-trimmed thresholds on VCC1 and VCC2, each feeding into a shared reset timer with fixed 210ms minimum timeout. Its push-pull RST output is referenced to VCC1 and asserts low when either supply falls below its threshold or manual reset (MR) is triggered.
No watchdog, power-fail, or RSTIN inputs are enabled in this variant - confirmed by the "TWG" suffix (dual-supply only, no auxiliary inputs) and absence of WDI/PFI/RSTIN pins in its 6-pin SOT23 pinout. Reset assertion is immune to transients ≤20µs at 100mV overdrive, and supply current remains stable at 14µA typical across -40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed falling threshold; ensures reset assert when primary 5V rail drops below safe logic level) |
| VCC2 Threshold | 3.075V (factory-trimmed falling threshold; monitors secondary 3.3V I/O rail independently) |
| Reset Timeout | 210ms min (guaranteed minimum duration of active-low RST pulse after all supplies recover) |
| Supply Current | 14µA typ at 3.6V (ultra-low quiescent draw enables use in always-on battery-backed systems) |
| Operating Temp | -40°C to +125°C (fully specified for under-hood automotive, industrial PLC, and telecom base station environments) |
| Reset Validity | Down to VCC1 or VCC2 = 0.8V (ensures deterministic reset state even during deep brownout conditions) |
| Output Type | Push-pull active-low RST (no external pullup required; drives directly to VCC1 logic levels) |
Pinout & Package
MAX6716UTWGD3 uses a 6-pin SOT23 package (JEDEC MO-178AA), with pin 1 marked by dot. All pins are surface-mount, lead-free, and RoHS-compliant.
| Pin | 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 |
| 2 | GND | Ground reference for internal comparators, timer, and output stage |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; forces reset when pulled low |
| 4 | VCC2 | Secondary supply input (monitored at 3.075V); powers internal circuitry when > VCC1 |
| 5 | VCC1 | Primary supply input (monitored at 4.625V); powers device when > VCC2 and sets RST output reference |
| 6 | NC | No connect - internally unconnected; must be left floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (4.625V) and VCC2 (3.075V) with separate comparators and shared timeout logic |
| Push-pull RST output | Eliminates need for external pullup resistor; drives full VCC1 logic high/low without loading |
| 210ms reset timeout | Fixed minimum assertion time ensures µP completes boot sequence before release |
| 0.8V reset validity | Guaranteed correct RST logic state even as VCC1 or VCC2 collapses to 0.8V - critical for fail-safe shutdown |
| Transient immunity | Immune to VCC glitches ≤20µs at 100mV overdrive - prevents spurious resets in noisy power environments |
Applications
| Industrial PLC Power Monitoring | Telecom Line Card Supervision |
|---|---|
Use Scenario: Monitors dual 5V/3.3V rails powering FPGA, PHY, and control logic on carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting reset if either rail sags during hot-swap or load surge. Use Value: Prevents partial configuration or corrupted register writes by holding µP in reset until both rails stabilize for ≥210ms. |
Use Scenario: Ensures clean startup and brownout recovery in modular telecom chassis with distributed 5V backplane and local 3.3V regulation. IC Role / Device Role / Timing Role: Primary supervisor for control-plane µP, coordinating with system-level power sequencing. Use Value: 4.625V/3.075V thresholds match standard telecom rail tolerances; 210ms timeout aligns with FPGA configuration timing. |
| Automotive Body Control Module | Battery-Powered Edge Sensor Node |
Use Scenario: Supervises 5V MCU core and 3.3V CAN transceiver supply in under-dash BCM exposed to wide temperature swings. IC Role / Device Role / Timing Role: Fail-safe voltage monitor operating from -40°C to +125°C with deterministic reset behavior down to 0.8V. Use Value: Guarantees reset assertion during cold-crank (battery dip to ~6V) and hot idle (rail sag due to alternator ripple). |
Use Scenario: Provides reliable power-on reset and brownout protection for LoRaWAN sensor nodes powered by LiSOCl₂ batteries. IC Role / Device Role / Timing Role: Ultra-low-current (14µA) dual-supply supervisor enabling multi-year battery life with robust undervoltage detection. Use Value: 0.8V reset validity ensures reset remains asserted even as battery depletes below 2.0V, preventing undefined MCU operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6716UTWD3+T | Identical VTH1/VTH2 (4.625V/3.075V) and 210ms timeout, but open-drain RST output instead of push-pull | Requires external pullup resistor; suitable where level-shifting or wired-OR reset bus is needed | Select when interfacing to bidirectional µP reset pins or multi-drop reset networks |
| TPS3808G33DBVR | Single-supply (3.3V only), 200ms timeout, 3.08V threshold, 1.6µA supply current - no VCC2 monitoring capability | Lacks dual-rail support; cannot replace MAX6716UTWGD3 in systems requiring independent 5V/3.3V supervision | Use only in single-rail 3.3V applications where ultra-low current (<2µA) outweighs dual-monitoring need |
Compared with MAX6716UTWGD3, MAX6716UTWD3+T offers identical supervision thresholds and timing but requires external biasing for RST, while TPS3808G33DBVR reduces current consumption by 90% yet sacrifices VCC2 monitoring - making it unsuitable for true dual-rail systems.
Availability
MAX6716UTWGD3 is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, automotive body control modules, and battery-powered edge sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6716UTWGD3 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, high-reliability systems needing deterministic reset behavior across extreme temperatures.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6716UTWGD3?
The MAX6716UTWGD3 has a factory-trimmed VCC1 reset threshold of 4.625V (falling), as defined by the "TWG" suffix per Maxim's Reset Voltage Threshold Suffix Guide. This value is guaranteed over temperature (-40°C to +125°C) with ±1.5% tolerance and 20ppm/°C tempco, ensuring accurate detection of 5V rail collapse in industrial and automotive systems.
Does MAX6716UTWGD3 support watchdog functionality?
No, MAX6716UTWGD3 does not include watchdog functionality. The "TWG" suffix indicates dual-supply monitoring only (VCC1 + VCC2), with no WDI pin or internal watchdog timer. Watchdog capability requires variants like MAX6721A–MAX6729A (e.g., MAX6721UTWGD3), which add pin 6 as WDI and implement dual-mode timeout (35s startup / 1.12s normal).
What is the function of pin 6 on MAX6716UTWGD3?
Pin 6 on MAX6716UTWGD3 is NC (No Connect) - internally unconnected and not bonded. It must be left floating or tied to GND per Maxim's layout recommendations to avoid noise coupling. This distinguishes it from watchdog-enabled variants (e.g., MAX6721A) where pin 6 serves as WDI.
Can MAX6716UTWGD3 monitor a third voltage rail?
No, MAX6716UTWGD3 cannot monitor a third voltage. It is a dual-supply supervisor only, with dedicated VCC1 and VCC2 inputs. Third-rail monitoring requires RSTIN-capable variants like MAX6719A/MAX6720A (5-pin SOT23) or MAX6723A–MAX6727A (6-pin with RSTIN), which use an external resistor divider to set thresholds down to 0.62V.
What is the maximum supply voltage the MAX6716UTWGD3 can tolerate on VCC1 and VCC2?
MAX6716UTWGD3 supports absolute maximum supply voltages of +6V on both VCC1 and VCC2 pins, per its Absolute Maximum Ratings table. However, functional operation is specified from 0.8V to 5.5V - meaning sustained operation above 5.5V risks damage or undefined behavior, even if within the 6V stress limit.
MAX6716UTWGD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.11V, 1.665V
- 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-23-6
MAX6716UTWGD3 FAQ
1.How can I place an order for MAX6716UTWGD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6716UTWGD3 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 MAX6716UTWGD3 reliable?
The price and inventory of MAX6716UTWGD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6716UTWGD3 is usually 5 days.
3.What payment methods are accepted for MAX6716UTWGD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6716UTWGD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6716UTWGD3?
MAX6716UTWGD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6716UTWGD3 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 MAX6716UTWGD3?
For technical support, including MAX6716UTWGD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6716UTWGD3 requirements.
6.How does Aetrix verify that MAX6716UTWGD3 is sourced from the original manufacturer or authorized distributors?
All MAX6716UTWGD3 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 MAX6716UTWGD3 meets industry standards.
7.What is the process for return or replacement of MAX6716UTWGD3?
All MAX6716UTWGD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6716UTWGD3, 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 MAX6716UTWGD3 part is unused and in its original packaging.
Return procedure for MAX6716UTWGD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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