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Analog Devices Inc./Maxim Integrated MAX6715UTZWD3+T
- Part No.:
- MAX6715UTZWD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6715UTZWD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,466
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Product details
Overview
MAX6715UTZWD3+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 reset timeout, watchdog timer, manual reset input, and guaranteed reset validity down to 0.8V supply. It ensures reliable power-on reset and brownout protection in multivoltage embedded systems.
For engineers reviewing the MAX6715UTZWD3+T datasheet, MAX6715UTZWD3+T pinout, MAX6715UTZWD3+T application, or MAX6715UTZWD3+T equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), ultra-low 14µA supply current at 3.6V, 35s startup watchdog mode, push-pull RST output referenced to VCC1, and immunity to sub-20µs VCC transients.
Technical Context
This device implements independent voltage comparators for primary (VCC1) and secondary (VCC2) supplies, each with factory-trimmed thresholds and 0.5% hysteresis. Reset assertion is latched by an internal timeout counter that restarts on any threshold violation before completion.
The integrated watchdog operates in dual-mode: 35s minimum initial period after reset for system boot, then transitions to 1.12s normal timeout upon first WDI edge detection. Manual reset (MR) features 50kΩ internal pullup and 1µs minimum pulse width support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±1.5% over -40°C to +85°C) |
| VCC2 Threshold | 3.075V (factory-trimmed, ±1.5% over -40°C to +85°C) |
| Reset Timeout | 210ms (minimum, guaranteed over full temperature range) |
| Supply Current | 14µA typical at 3.6V - enables battery-backed operation for >10 years |
| Watchdog Period | 35s min startup / 1.12s min normal mode - supports complex boot sequences |
| Reset Output Type | Push-pull active-low RST referenced to VCC1 - eliminates external pullup |
| Operating Temp | -40°C to +85°C - qualified for industrial and telecom environments |
Pinout & Package
MAX6715UTZWD3+T is housed in a RoHS-compliant 6-pin SOT23-6 package (1.6mm × 2.9mm × 1.1mm), optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts when VCC1/VCC2 drop below thresholds or MR is pulled low |
| 2 | GND | Analog/digital ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and sets RST2 reference if used |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers core logic, sets RST output reference, and enables reset validity down to 0.8V |
| 6 | WDI | Watchdog input with 0.3×VCC1/0.7×VCC1 logic thresholds; triggers reset if no edge detected for >1.12s (normal mode) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Simultaneous VCC1 and VCC2 supervision with separate thresholds and hysteresis prevents false resets during asymmetric rail sequencing |
| Guaranteed reset validity to 0.8V | Ensures deterministic reset state even during deep brownout conditions where many supervisors fail |
| Immunity to short VCC transients | Rejects <20µs negative glitches - eliminates spurious resets in noisy power environments |
| Low 14µA supply current | Enables direct integration into always-on subsystems without compromising battery life |
| Dual-mode watchdog timer | 35s startup window accommodates BIOS/post-boot initialization; 1.12s runtime mode catches software hangs |
Applications
| Telecom Line Cards | Industrial PLC Controllers |
|---|---|
Use Scenario: Monitoring 3.3V I/O and 1.8V core rails in carrier-grade Ethernet switches during hot-swap events. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to FPGA and microcontroller upon either rail droop. Use Value: Prevents partial configuration lockup by guaranteeing reset remains asserted until both rails stabilize above 4.625V and 3.075V respectively. |
Use Scenario: Ensuring safe startup and fault recovery in modular I/O modules powered by isolated DC-DC converters. IC Role / Device Role / Timing Role: Primary supervisor for 24V-to-5V and 5V-to-3.3V conversion stages with manual reset via front-panel button. Use Value: 210ms timeout provides margin for slow-ramping industrial power supplies while 50kΩ MR pullup eliminates external components. |
| Medical Diagnostic Handhelds | Automotive Infotainment Gateways |
Use Scenario: Managing power sequencing of Li-ion battery-backed 3.3V system rail and 1.2V sensor interface rail in portable ultrasound devices. IC Role / Device Role / Timing Role: Battery-aware supervisor detecting undervoltage on both rails and triggering controlled shutdown via MCU interrupt. Use Value: 14µA quiescent current extends standby time; 0.8V reset validity ensures operation through battery end-of-life sag. |
Use Scenario: Coordinating reset timing across multiple SoC domains (application processor, audio DSP, CAN controller) during cold crank conditions. IC Role / Device Role / Timing Role: Centralized reset arbiter using push-pull RST to drive multiple domain reset lines with defined voltage reference. Use Value: Push-pull output eliminates need for level-shifting buffers; dual-threshold detection prevents premature release during 12V battery dip. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single-supply monitor (3.3V only); no VCC2 input; fixed 200ms timeout; no watchdog | Lacks dual-rail capability and system-level fault coverage; suitable only for single-rail systems | Select when only primary rail supervision is needed and cost sensitivity outweighs feature set |
| ADM6710LAKSZ-REEL7 | Triple-supply monitor (1.2V/1.8V/3.3V); 200ms timeout; no watchdog; open-drain RST | Supports three rails but requires external pullup; lacks watchdog and manual reset input | Choose for triple-rail legacy designs where push-pull output and watchdog are not required |
Compared with TPS3808G33DBVR and ADM6710LAKSZ-REEL7, MAX6715UTZWD3+T uniquely combines dual-rail monitoring, integrated watchdog with startup/normal modes, push-pull RST, and guaranteed 0.8V operation - making it optimal for new designs requiring robust, self-contained reset management.
Availability
MAX6715UTZWD3+T is available at Aetrix Electronics and suitable for telecom line cards, industrial PLC controllers, medical handheld diagnostics, and automotive infotainment gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6715UTZWD3+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 precision analog, mixed-signal, and power management ICs for demanding industrial, communications, and computing applications.
MAX6715–MAX6729 is Maxim's ultra-low-voltage supervisory product line designed specifically for multirail embedded systems where simultaneous monitoring of primary and secondary supplies is critical to system reliability.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on MAX6715UTZWD3+T?
The MAX6715UTZWD3+T has factory-trimmed reset thresholds of 4.625V for VCC1 and 3.075V for VCC2, with ±1.5% tolerance over the full -40°C to +85°C operating range. These values are encoded in the "ZW" suffix per Maxim's Reset Voltage Threshold Suffix Guide and verified in the Electrical Characteristics table of the official datasheet.
Does MAX6715UTZWD3+T support manual reset functionality, and how is it implemented?
Yes, MAX6715UTZWD3+T includes an active-low manual reset input (MR) on Pin 3 with a 50kΩ internal pullup resistor to VCC1. Pulling MR low for ≥1µs forces reset assertion for the full 210ms timeout period. The input accepts TTL/CMOS logic levels and requires no external components - simplifying front-panel or test-point reset integration.
What watchdog timer behavior does MAX6715UTZWD3+T provide, and how is it configured?
MAX6715UTZWD3+T implements a dual-mode watchdog timer: a 35s minimum startup period after any reset event (power-up, MR, or timeout), followed by a 1.12s minimum normal timeout triggered by the first valid edge on WDI (Pin 6). No external configuration is needed - the behavior is hardwired and documented in the Detailed Description section of the datasheet.
Is MAX6715UTZWD3+T compatible with systems where VCC drops below 1.0V during brownout?
Yes, MAX6715UTZWD3+T guarantees correct reset output logic state down to VCC1 or VCC2 = 0.8V - a key differentiator versus most supervisors that fail below 1.0V. This ensures deterministic reset assertion during deep brownout, enabling safe system recovery in battery-depleted or unregulated supply scenarios.
What package type and footprint does MAX6715UTZWD3+T use, and are there thermal considerations?
MAX6715UTZWD3+T uses a 6-pin SOT23-6 package (1.6mm × 2.9mm × 1.1mm) with lead-free +T suffix. Its thermal resistance θJA is 150°C/W; at 14µA supply current, self-heating is negligible (<0.1°C rise), making derating unnecessary in standard industrial airflow conditions.
MAX6715UTZWD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.665V, 2.313V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6715UTZWD3+T FAQ
1.How can I place an order for MAX6715UTZWD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6715UTZWD3+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 MAX6715UTZWD3+T reliable?
The price and inventory of MAX6715UTZWD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6715UTZWD3+T is usually 5 days.
3.What payment methods are accepted for MAX6715UTZWD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6715UTZWD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6715UTZWD3+T?
MAX6715UTZWD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6715UTZWD3+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 MAX6715UTZWD3+T?
For technical support, including MAX6715UTZWD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6715UTZWD3+T requirements.
6.How does Aetrix verify that MAX6715UTZWD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6715UTZWD3+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 MAX6715UTZWD3+T meets industry standards.
7.What is the process for return or replacement of MAX6715UTZWD3+T?
All MAX6715UTZWD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6715UTZWD3+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 MAX6715UTZWD3+T part is unused and in its original packaging.
Return procedure for MAX6715UTZWD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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