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Analog Devices Inc./Maxim Integrated MAX6716UTWGD3-T
- Part No.:
- MAX6716UTWGD3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6716UTWGD3-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MAX6716UTWGD3-T 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 minimum reset timeout, push-pull active-low RST output, manual reset input, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and server board management.
For engineers reviewing the MAX6716UTWGD3-T datasheet, MAX6716UTWGD3-T pinout, MAX6716UTWGD3-T application, or MAX6716UTWGD3-T equivalent, key selection factors 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 compatibility with 1.8V–5.0V primary/0.9V–3.3V secondary supply rails.
Technical Context
The MAX6716UTWGD3-T implements two independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), each feeding a shared reset timeout timer (210ms min). Its push-pull RST output is referenced to VCC1 and asserts low when either supply falls below its threshold or MR is pulled low.
It features internal 50kΩ MR pullup, 200ns MR-to-reset delay, and guaranteed operation with VCC1 ≥ 0.8V or VCC2 ≥ 0.8V - enabling reliable reset assertion during deep brownout conditions common in battery-backed industrial controllers and portable networking gear.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±1.5% over -40°C to +85°C) - ensures precise detection of 5V rail collapse before µP lockup. |
| VCC2 Threshold | 3.075V (factory-trimmed, ±1.5% over -40°C to +85°C) - matches standard 3.3V I/O supply margin for clean reset initiation. |
| Reset Timeout | 210ms minimum - provides sufficient hold time for FPGA configuration, DRAM initialization, and boot ROM access. |
| Supply Current | 14µA typical at 3.6V - enables use in always-on subsystems without compromising battery life in portable equipment. |
| Reset Output Type | Push-pull active-low RST referenced to VCC1 - eliminates need for external pullup and supports direct interface to 3.3V/5V µP reset pins. |
| MR Input Logic | Active-low with 50kΩ internal pullup to VCC1 - allows momentary switch-to-GND implementation without external components. |
| VCC Immunity | Valid reset assertion down to VCC1 or VCC2 = 0.8V - maintains system integrity during severe undervoltage events. |
Pinout & Package
MAX6716UTWGD3-T is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant, with gull-wing leads and thermal pad option per Maxim's lead-free packaging specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; sinks up to 3.2mA at VCC1 ≥ 4.5V; asserts when VCC1 < 4.625V or VCC2 < 3.075V. |
| 2 | GND | Analog/digital ground reference for all comparators, timers, and output drivers; must be low-impedance connection to system ground plane. |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; 200ns delay to RST assertion; accepts TTL/CMOS logic levels. |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and sets RST2 reference if enabled; not used in MAX6716. |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers entire IC and references RST output; must be ≥ 0.8V for guaranteed reset validity. |
| 6 | NC | No connect - internally unconnected; must remain floating or tied to GND per layout best practices to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (4.625V) and VCC2 (3.075V) with separate comparators - eliminates need for discrete supervisor ICs in multirail systems. |
| Factory-trimmed precision thresholds | ±1.5% total accuracy over -40°C to +85°C - removes calibration overhead and ensures consistent reset behavior across production batches. |
| Guaranteed reset validity at low VCC | Operates correctly with VCC1 or VCC2 as low as 0.8V - supports fail-safe reset assertion during gradual battery discharge or LDO dropout. |
| Ultra-low quiescent current | 14µA typical at 3.6V - reduces standby power in always-on network edge devices and extends runtime in battery-powered IoT gateways. |
| Push-pull RST output | No external pullup required; drives high to 0.8×VCC1 and low to ≤0.4V at 3.2mA - simplifies PCB routing and improves noise immunity vs. open-drain alternatives. |
Applications
| Telecom Power Sequencing | Server Board Management |
|---|---|
|
Use Scenario: Monitoring 48V DC-DC converter output (5V) and intermediate 3.3V rail in carrier-grade Ethernet switches during hot-swap insertion. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset to ASICs and PHYs when either rail drops below spec during transient load steps. Use Value: Prevents metastability in SerDes lanes by ensuring all logic domains reset simultaneously upon 5V/3.3V brownout - eliminating packet corruption during field upgrades. |
Use Scenario: Validating main 12V ATX-derived 3.3V and 5V rails on x86 server motherboards before BIOS execution begins. IC Role / Device Role / Timing Role: Primary reset generator interfacing directly to PCH reset pin, with 210ms timeout matching Intel's tRSTST specification for PCIe root complex initialization. Use Value: Guarantees CPU and memory controller receive clean, extended reset pulse even during marginal AC input conditions - reducing POST failures in datacenter deployments. |
| Industrial PLC Controller | Portable Network Analyzer |
|
Use Scenario: Supervising isolated 24V-to-5V and 5V-to-3.3V supplies powering ARM Cortex-M7 MCU and CAN transceivers in harsh factory environments. IC Role / Device Role / Timing Role: Fault-detection node triggering hardware reset when VCC1 (5V) sags due to EMI-induced regulator instability or VCC2 (3.3V) collapses from sensor bus short. Use Value: Maintains reset assertion down to 0.8V on either rail - enabling recovery from partial brownouts without requiring full power cycle, improving machine uptime. |
Use Scenario: Managing power-up sequence of Li-ion battery (3.7V nominal), buck-converted 3.3V core, and LDO-regulated 1.8V RF front-end in handheld spectrum analyzers. IC Role / Device Role / Timing Role: Low-current supervisor enabling >100-hour battery standby by drawing only 14µA while continuously monitoring both regulated rails. Use Value: Extends field measurement time between charges without sacrificing reliability - critical for battery-operated test equipment used in remote site surveys. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316HUT48D3-T | Same 6-pin SOT23 package, identical 4.625V/3.075V thresholds and 210ms timeout, but open-drain RST output requiring external pullup. | Lacks push-pull drive strength; unsuitable for direct interface to µPs with weak internal pullups or high capacitive reset loads. | Select when board-level pullup already exists or when level-shifting to lower-voltage logic is needed. |
| TPS3808G33DBVR | 3.3V fixed VDD monitor only (no dual-rail support); 200ms timeout; 1.6µA supply current; SOT23-6 package. | Cannot monitor secondary 3.075V rail - requires additional supervisor or resistor-divider for VCC2 tracking. | Choose only for single-rail 3.3V systems where ultra-low current dominates over dual-supply capability. |
Compared with MAX6716UTWGD3-T, MAX6316HUT48D3-T offers identical monitoring specs but demands external biasing for RST, while TPS3808G33DBVR sacrifices dual-voltage functionality for 90% lower quiescent current - making MAX6716UTWGD3-T optimal for space-constrained multirail designs needing robust, self-contained reset generation.
Availability
MAX6716UTWGD3-T is available at Aetrix Electronics and suitable for telecom power sequencing, server board management, and industrial PLC controller applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX6716UTWGD3-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, communications, and computing markets.
The MAX6715–MAX6729 family was designed specifically for compact, multivoltage embedded systems requiring precise, low-power, and fault-tolerant power-supply monitoring with minimal external components.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6716UTWGD3-T?
The MAX6716UTWGD3-T has factory-trimmed reset thresholds of 4.625V for VCC1 and 3.075V for VCC2, with ±1.5% total accuracy over the full -40°C to +85°C operating temperature range. These values are encoded in the "WG" suffix per Maxim's Reset Voltage Threshold Suffix Guide and are verified in the Electrical Characteristics table of the official datasheet. The MAX6716UTWGD3-T does not support adjustable thresholds - only factory-set dual-rail monitoring.
Does the MAX6716UTWGD3-T support watchdog or power-fail functionality?
No, the MAX6716UTWGD3-T does not include watchdog timer or power-fail input/output features. Per Maxim's Selector Guide, it belongs to the MAX6716 subgroup - which provides dual-voltage supervision, manual reset input, and push-pull RST output only. Watchdog capability is reserved for MAX6721–MAX6729 variants, and power-fail features appear only in MAX6728/MAX6729. The MAX6716UTWGD3-T is optimized for simplicity and low cost in basic dual-rail monitoring applications.
What is the function of Pin 6 (NC) on the MAX6716UTWGD3-T?
Pin 6 on the MAX6716UTWGD3-T is designated NC (No Connect) and is internally unconnected. It must remain floating or be tied to GND in PCB layout to minimize noise coupling into adjacent pins (especially MR and VCC1). This pin is not bonded out and serves no electrical function - unlike Pin 6 on MAX6719/MAX6720 variants, which carries RSTIN. The MAX6716UTWGD3-T uses only Pins 1–5 for RST, GND, MR, VCC2, and VCC1 respectively.
Can the MAX6716UTWGD3-T operate with VCC1 = 1.8V?
No, the MAX6716UTWGD3-T cannot reliably supervise a 1.8V VCC1 rail because its factory-set VCC1 threshold is 4.625V. While the device itself will power up and function with VCC1 as low as 0.8V (per Absolute Maximum Ratings), the 4.625V threshold exceeds 1.8V and therefore cannot detect undervoltage on such a rail. For 1.8V monitoring, a different variant like MAX6716UTLTD3-T (1.665V/1.110V thresholds) or MAX6718 series would be required. The MAX6716UTWGD3-T is intended for 5V/3.3V dual-rail systems.
What is the maximum sink current capability of the RST output on the MAX6716UTWGD3-T?
The push-pull RST output on the MAX6716UTWGD3-T can sink up to 3.2mA when VCC1 ≥ 4.5V, with VOL ≤ 0.4V under that condition. At lower VCC1 voltages, sink capability scales: 100µA at VCC1 ≥ 1.2V (VOL ≤ 0.3V), 50µA at VCC1 ≥ 1.0V (VOL ≤ 0.3V), and 1µA at VCC1 ≥ 0.8V (VOL ≤ 0.3V). This graded drive strength ensures compatibility with diverse µP reset inputs while maintaining guaranteed logic-low levels across the full valid VCC operating range of the MAX6716UTWGD3-T.
MAX6716UTWGD3-T 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-T FAQ
1.How can I place an order for MAX6716UTWGD3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6716UTWGD3-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 MAX6716UTWGD3-T reliable?
The price and inventory of MAX6716UTWGD3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6716UTWGD3-T is usually 5 days.
3.What payment methods are accepted for MAX6716UTWGD3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6716UTWGD3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6716UTWGD3-T?
MAX6716UTWGD3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6716UTWGD3-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 MAX6716UTWGD3-T?
For technical support, including MAX6716UTWGD3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6716UTWGD3-T requirements.
6.How does Aetrix verify that MAX6716UTWGD3-T is sourced from the original manufacturer or authorized distributors?
All MAX6716UTWGD3-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 MAX6716UTWGD3-T meets industry standards.
7.What is the process for return or replacement of MAX6716UTWGD3-T?
All MAX6716UTWGD3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6716UTWGD3-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 MAX6716UTWGD3-T part is unused and in its original packaging.
Return procedure for MAX6716UTWGD3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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