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Analog Devices Inc./Maxim Integrated MAX6715UTWGD3+
- Part No.:
- MAX6715UTWGD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6715UTWGD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,350
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Product details
Overview
MAX6715UTWGD3+ from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) supply rails with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 210ms minimum reset timeout, and push-pull active-low RST output. It guarantees valid reset assertion down to VCC1 or VCC2 = 0.8V and draws only 14µA typical supply current at 3.6V - used in telecom power management and multivoltage embedded systems requiring reliable brownout detection.
For engineers reviewing the MAX6715UTWGD3+ datasheet, MAX6715UTWGD3+ pinout, MAX6715UTWGD3+ application, or MAX6715UTWGD3+ equivalent, key selection criteria include dual-rail threshold accuracy (±1.5% over temperature), immunity to sub-20µs VCC transients, guaranteed reset validity at ultra-low supply (0.8V), and compatibility with manual reset, watchdog-free designs in space-constrained industrial controllers.
Technical Context
The MAX6715UTWGD3+ integrates two independent voltage comparators with internal 20ppm/°C tempco references, each feeding a shared reset timeout timer. Its push-pull RST output is referenced to VCC1 and sinks up to 3.2mA at 4.5V, eliminating external pull-up requirements for active-low reset signaling to µPs.
This variant lacks RSTIN, WDI, PFI/PFO, and RST2 - confirming it as a minimal dual-supply supervisor with fixed thresholds and no auxiliary monitoring or watchdog functionality. The D3 suffix explicitly denotes 210ms (min) reset timeout, and the 'W' and 'G' in the suffix map to VTH1 = 4.625V and VTH2 = 3.075V per Maxim's Reset Voltage Threshold Suffix Guide.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (min 4.500V, max 4.750V) - ensures clean reset assertion before 5V rail collapse in server I/O subsystems. |
| VCC2 Threshold | 3.075V (min 3.000V, max 3.150V) - matches standard 3.3V LDO dropout margin for reliable secondary rail monitoring. |
| Reset Timeout | 210ms (min) - provides sufficient hold time for FPGA configuration or flash boot sequence completion. |
| Supply Current | 14µA (typ) at 3.6V - enables always-on supervision in battery-backed real-time clocks without measurable drain. |
| Operating Temp | -40°C to +85°C - qualified for deployment in uncontrolled industrial enclosures and telecom line cards. |
| Reset Output Type | Push-pull active-low - drives µP RESET pin directly without external pull-up, reducing BOM count and layout area. |
| Valid Reset Down To | VCC1 or VCC2 ≥ 0.8V - maintains deterministic reset state during deep brownout, preventing spurious processor wake-up. |
Pinout & Package
MAX6715UTWGD3+ uses a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for high-density PCB layouts in portable and networking equipment. Pin 1 is RST (active-low push-pull reset output), Pin 2 is GND, Pin 3 is MR (active-low manual reset input with 50kΩ internal pull-up), Pin 4 is VCC2 (secondary supply input), Pin 5 is NC (no connect), Pin 6 is VCC1 (primary supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low push-pull reset output | Asserts low when VCC1 < 4.625V or VCC2 < 3.075V; drives µP RESET directly; no external pull-up needed. |
| 2 - GND | Ground reference | Common return path for all internal comparators, timer, and output driver; must be low-impedance. |
| 3 - MR | Active-low manual reset input | Pulled high internally to VCC1; pulling low forces immediate reset; debounced by 200ns delay and 100ns glitch rejection. |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when VCC2 > VCC1; sets VTH2 = 3.075V; monitored independently of VCC1. |
| 5 - NC | No connect | Internally unconnected; must remain floating or tied to GND per layout best practice; not usable as signal pin. |
| 6 - VCC1 | Primary supply input | Powers device when VCC1 > VCC2; sets VTH1 = 4.625V; referenced for RST output VOH/VOL specs and MR pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 (4.625V) and VCC2 (3.075V) supervision with separate comparators avoids single-point failure in multirail systems. |
| Guaranteed reset validity at 0.8V | Ensures deterministic reset behavior during severe brownout - critical for fail-safe shutdown in industrial PLCs. |
| 210ms minimum reset timeout | Meets JEDEC JESD78 reliability requirements for minimum reset pulse width in µP-based control systems. |
| 14µA typical supply current | Enables permanent supervision in energy-harvesting nodes and battery-backed memory retention circuits. |
| Push-pull RST output | Eliminates need for external pull-up resistor, reducing component count and PCB footprint in compact designs. |
| MR input with 50kΩ internal pull-up | Supports momentary switch interface without external biasing; compatible with TTL/CMOS logic drive levels. |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring primary 4.8V backplane supply and secondary 3.3V FPGA core rail in carrier-grade Ethernet switches. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting active-low reset to FPGA and ARM host processor upon either rail drop. Use Value: Prevents partial configuration or metastability by holding reset until both rails stabilize above 4.625V and 3.075V respectively. |
Use Scenario: Ensuring deterministic startup of isolated analog I/O channels powered by separate 5V and 3.3V DC/DC converters. IC Role / Device Role / Timing Role: Providing synchronized reset to ADCs, DACs, and microcontroller after power-on sequencing completes. Use Value: Eliminates race conditions between analog front-end initialization and digital controller boot via 210ms guaranteed hold time. |
| Server Management Controllers | Portable Medical Devices |
Use Scenario: Supervising BMC (Baseboard Management Controller) 3.3V supply and main CPU 1.8V rail in redundant power architectures. IC Role / Device Role / Timing Role: Dual-threshold monitor triggering system-wide reset if either supply falls below spec during hot-swap events. Use Value: Maintains fault isolation integrity by guaranteeing reset assertion even during 0.8V–1.2V brownout transients common in distributed power systems. |
Use Scenario: Enabling always-on supervision of lithium-ion battery-backed real-time clock (RTC) and low-power MCU in infusion pumps. IC Role / Device Role / Timing Role: Ultra-low-current (14µA) dual-rail monitor ensuring RTC remains reset until both battery and regulated 3.3V rails are stable. Use Value: Extends battery life beyond 5 years while preserving data integrity during power interruption and recovery cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6716UTLTD3+ | Same SOT23-6 package, identical 4.625V/3.075V thresholds and 210ms timeout, but features open-drain RST output instead of push-pull. | Requires external pull-up resistor; suitable where level-shifting or wired-OR reset bus is needed. | Select MAX6716UTLTD3+ only if system requires open-drain reset for bus sharing or voltage translation. |
| TPS3808G33DBVR | TI part with 3.3V fixed VDD monitor, 200ms timeout, 1.8µA quiescent current, SOT23-6, but monitors only one supply (VDD) - no VCC2 input. | Lacks secondary rail monitoring; cannot replace dual-supply supervision requirement of MAX6715UTWGD3+. | Use TPS3808G33DBVR only in single-rail applications where VCC2 monitoring is unnecessary and ultra-low IQ is prioritized. |
Compared with MAX6715UTWGD3+, MAX6716UTLTD3+ trades push-pull convenience for bus flexibility, while TPS3808G33DBVR sacrifices dual-rail capability for lower IQ - making MAX6715UTWGD3+ uniquely suited for compact dual-supply systems needing deterministic reset drive without external components.
Availability
MAX6715UTWGD3+ is available at Aetrix Electronics and suitable for telecom power sequencing, industrial PLC I/O modules, and server management controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6715UTWGD3+ 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 expertise in power management and reliability-critical supervision.
The MAX6715–MAX6729 family delivers ultra-low-voltage, dual/triple-supply microprocessor supervisors targeting multivoltage embedded systems where board space, power efficiency, and brownout resilience are paramount.
FAQ
What are the exact reset threshold voltages for MAX6715UTWGD3+?
The MAX6715UTWGD3+ has factory-trimmed reset thresholds of 4.625V (VTH1) for VCC1 and 3.075V (VTH2) for VCC2, with tolerances of ±1.5% over -40°C to +85°C. These values are confirmed by the 'W' (VTH1 = 4.625V) and 'G' (VTH2 = 3.075V) characters in the part number suffix per Maxim's official Reset Voltage Threshold Suffix Guide.
Does MAX6715UTWGD3+ support watchdog or power-fail functionality?
No, MAX6715UTWGD3+ does not include watchdog input (WDI), power-fail input (PFI), or power-fail output (PFO). It is a dedicated dual-supply supervisor with only VCC1, VCC2, MR, RST, and GND pins - verified by its absence from the Selector Guide rows for WDI/PFI/PFO and its pin configuration matching MAX6715/MAX6716 variants.
What is the reset timeout period of MAX6715UTWGD3+ and how is it set?
The MAX6715UTWGD3+ has a minimum reset timeout period of 210ms, indicated by the 'D3' suffix in the part number. This value is factory-programmed and non-adjustable; timing is generated by an internal RC oscillator with ±30% variation over temperature and voltage, meeting JEDEC JESD78 requirements for minimum pulse width.
Can MAX6715UTWGD3+ operate with VCC1 and VCC2 swapped in the circuit?
No - MAX6715UTWGD3+ requires VCC1 to be the higher-voltage rail (4.625V threshold) and VCC2 the lower-voltage rail (3.075V threshold). The internal architecture assigns VTH1 exclusively to Pin 6 (VCC1) and VTH2 exclusively to Pin 4 (VCC2); swapping violates the specified operating conditions and invalidates reset behavior per Absolute Maximum Ratings and Electrical Characteristics tables.
Is MAX6715UTWGD3+ pin-compatible with other MAX67xx devices in SOT23-6?
MAX6715UTWGD3+ shares the same 6-pin SOT23-6 footprint with MAX6716UTLTD3+, MAX6719UTLTD3+, and MAX6721UTLTD3+, but pin functions differ: Pin 1 is RST on all, Pin 3 is MR on MAX6715/MAX6716 but WDI on MAX6721, and Pin 5 is NC on MAX6715 but RSTIN on MAX6719 - direct replacement requires functional verification per Selector Guide.
MAX6715UTWGD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.11V, 1.665V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6715UTWGD3+ FAQ
1.How can I place an order for MAX6715UTWGD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6715UTWGD3+ 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 MAX6715UTWGD3+ reliable?
The price and inventory of MAX6715UTWGD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6715UTWGD3+ is usually 5 days.
3.What payment methods are accepted for MAX6715UTWGD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6715UTWGD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6715UTWGD3+?
MAX6715UTWGD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6715UTWGD3+ 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 MAX6715UTWGD3+?
For technical support, including MAX6715UTWGD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6715UTWGD3+ requirements.
6.How does Aetrix verify that MAX6715UTWGD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6715UTWGD3+ 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 MAX6715UTWGD3+ meets industry standards.
7.What is the process for return or replacement of MAX6715UTWGD3+?
All MAX6715UTWGD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6715UTWGD3+, 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 MAX6715UTWGD3+ part is unused and in its original packaging.
Return procedure for MAX6715UTWGD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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