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Analog Devices Inc./Maxim Integrated MAX6715UTZWD3
- Part No.:
- MAX6715UTZWD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6715UTZWD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:307
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Product details
Overview
MAX6715UTZWD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) supplies 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 sequencing and server motherboard voltage supervision.
For engineers reviewing the MAX6715UTZWD3 datasheet, MAX6715UTZWD3 pinout, MAX6715UTZWD3 application, or MAX6715UTZWD3 equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), immunity to sub-20µs VCC transients, guaranteed reset validity below 1V supply, and compatibility with manual reset (MR) and watchdog-free system architectures.
Technical Context
The MAX6715UTZWD3 implements two independent voltage comparators with internal 20ppm/°C tempco references, driving a single reset timeout timer with fixed 210ms (min) delay. Its push-pull RST output is referenced to VCC1 and sinks up to 3.2mA at 4.5V, ensuring robust drive into µP reset pins without external pull-up.
No watchdog, power-fail, or RSTIN inputs are enabled in this variant - confirmed by Selector Guide entry for MAX6715 (2 monitors, push-pull RST, MR only). The device operates across -40°C to +85°C and maintains reset logic integrity even when VCC1 drops to 0.8V while VCC2 remains active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (typ), ±1.5% over -40°C to +85°C - sets precise brownout detection for 5V or 4.8V primary rails |
| VCC2 Reset Threshold | 3.075V (typ), ±1.5% over -40°C to +85°C - enables reliable monitoring of 3.3V secondary supplies |
| Reset Timeout Period | 210ms (min) - ensures µP completes full boot sequence before release from reset |
| Supply Current | 14µA (typ) at 3.6V - minimizes quiescent load on battery-backed or low-power auxiliary rails |
| Reset Output Type | Push-pull active-low RST referenced to VCC1 - eliminates need for external pull-up and supports direct µP interface |
| Operating Temperature | -40°C to +85°C - qualified for industrial and telecom equipment environments |
| Package | SOT23-6 - 2.9mm × 1.6mm footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6715UTZWD3 uses a 6-pin SOT23-6 package with gull-wing leads, 0.95mm pitch, and thermal pad omitted. Pin 1 is marked by dot; pin numbering follows standard SOT23 counterclockwise from mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low during fault and holds for 210ms after recovery |
| 2 | GND | Analog/digital ground reference for all internal comparators and timing circuits |
| 3 | MR | Active-low manual reset input with 50kΩ internal pull-up to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and sets VTH2 threshold |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers core logic, sets VTH1 threshold, and references RST output |
| 6 | NC | No connect - internally unconnected; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 and VCC2 supervision with separate thresholds avoids single-point failure in multirail systems |
| Guaranteed reset validity down to 0.8V | Ensures deterministic reset behavior during deep brownout - critical for safe shutdown in telecom line cards |
| Immunity to short VCC transients | Rejects glitches <20µs duration, preventing spurious resets during switching noise or hot-swap events |
| Low 14µA supply current | Reduces standby power in always-on subsystems such as baseband controllers or management ASICs |
| Push-pull RST output | Drives µP reset pin directly without external components - simplifies BOM and improves signal integrity |
Applications
| Telecom Line Card Power Supervision | Server Motherboard Voltage Sequencing |
|---|---|
|
Use Scenario: Monitoring +5V (VCC1) and +3.3V (VCC2) rails on a DSLAM line card during AC mains interruption. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops below threshold, holding reset for 210ms to allow orderly firmware save before power loss. Use Value: Prevents corrupted configuration writes during brownout by guaranteeing reset remains asserted until both supplies stabilize above 4.625V and 3.075V respectively. |
Use Scenario: Coordinating power-up sequence of CPU core (VCC2) and I/O (VCC1) supplies on a 1U server motherboard. IC Role / Device Role / Timing Role: Independent threshold detection ensures VCC2 reaches 3.075V before releasing reset to CPU, while VCC1 must exceed 4.625V to enable PCIe root complex. Use Value: Eliminates need for discrete RC timers or sequencer ICs - reduces component count and board area by 30% vs. discrete solution. |
| Industrial PLC Controller Boot Integrity | Portable Medical Device Power Management |
|
Use Scenario: Ensuring deterministic startup of ARM-based PLC controller after cold start in -40°C ambient. IC Role / Device Role / Timing Role: Supervising 3.3V FPGA config rail (VCC2) and 5V analog front-end rail (VCC1) with guaranteed reset operation down to 0.8V supply. Use Value: Maintains reset assertion through slow-ramping supplies common in industrial DC-DC converters, preventing premature execution before rail stabilization. |
Use Scenario: Managing power-on reset for a battery-powered ECG monitor with Li-ion (3.0–4.2V) and LDO-regulated 3.3V rails. IC Role / Device Role / Timing Role: Detecting undervoltage on main battery (VCC1) and regulated 3.3V (VCC2), asserting reset before ADC or Bluetooth SoC enters invalid state. Use Value: 14µA quiescent current extends shelf life of sealed medical devices; 210ms timeout allows full sensor initialization before data acquisition begins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR29D3-T | Single-supply (2.93V threshold), no VCC2 monitoring, same SOT23-6 package and 210ms timeout | Only suitable where only one rail requires supervision; lacks dual-threshold flexibility | Select when cost reduction is prioritized and secondary supply monitoring is unnecessary |
| TPS3808G33DBVR | Single-supply (3.3V threshold), 200ms timeout, 2.5µA supply current, but no MR input or VCC2 path | Cannot replace dual-monitoring function; requires external logic for multi-rail coordination | Choose for ultra-low-power battery applications where only 3.3V rail supervision is needed |
Compared with MAX6715UTZWD3, MAX6326UR29D3-T reduces functionality to single-rail supervision with identical timing and package, while TPS3808G33DBVR trades dual monitoring for 5.6× lower quiescent current but removes manual reset and secondary supply support - making MAX6715UTZWD3 uniquely suited for deterministic dual-rail power sequencing.
Availability
MAX6715UTZWD3 is available at Aetrix Electronics and suitable for telecom line cards, server motherboards, industrial PLCs, and portable medical devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6715UTZWD3 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 power management, sensing, and connectivity in demanding industrial and communications applications.
The MAX6715–MAX6729 family delivers compact, low-power supervisory solutions for multivoltage systems where reliability, small size, and guaranteed reset behavior under brownout conditions are critical design requirements.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6715UTZWD3?
The MAX6715UTZWD3 has factory-trimmed reset thresholds of 4.625V (VTH1) for VCC1 and 3.075V (VTH2) for VCC2, with ±1.5% tolerance over -40°C to +85°C. These values are encoded in the "TZ" suffix per Maxim's Reset Voltage Threshold Suffix Guide and verified in the Electrical Characteristics table of the official datasheet. The MAX6715UTZWD3 does not support adjustable thresholds or RSTIN/PFI inputs.
Does the MAX6715UTZWD3 include a watchdog timer or power-fail functionality?
No, the MAX6715UTZWD3 does not include watchdog timer or power-fail input/output functionality. Per the Selector Guide, MAX6715 is defined as a dual-voltage supervisor with manual reset (MR) only - no WDI, PFI, or PFO pins are implemented. This is confirmed by its pinout (Pin 6 = NC) and absence of watchdog timing parameters in its specific ordering variant.
What is the reset timeout period of the MAX6715UTZWD3, and is it adjustable?
The MAX6715UTZWD3 has a fixed minimum reset timeout period of 210ms, indicated by the "D3" suffix in its part number per Maxim's Reset Timeout Period Suffix Guide. This value is not user-adjustable - it is factory-set and guaranteed over temperature. The timeout begins when all monitored supplies rise above their thresholds and ends with RST deassertion.
Can the MAX6715UTZWD3 operate with VCC1 and VCC2 supplied from different voltage sources?
Yes, the MAX6715UTZWD3 is explicitly designed to monitor independent VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) supplies. Its internal architecture isolates the two comparators, allowing VCC1 to power the RST output driver while VCC2 powers its dedicated comparator - enabling use cases like monitoring a 4.8V backplane rail and a 2.5V FPGA core rail simultaneously.
Is the MAX6715UTZWD3 pin-compatible with other devices in the MAX6715–MAX6729 family?
The MAX6715UTZWD3 is pin-compatible with other 6-pin SOT23-6 variants in the family (e.g., MAX6716UTZWD3, MAX6719UTZWD3), sharing identical pin 1–6 assignments. However, functional differences exist: MAX6715UTZWD3 uses push-pull RST and has no RSTIN/PFI/WDI connections, whereas MAX6719UTZWD3 enables RSTIN monitoring and MAX6721UTZWD3 adds watchdog input - requiring schematic review before substitution.
MAX6715UTZWD3 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:
- 1.665V, 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-23-6
MAX6715UTZWD3 FAQ
1.How can I place an order for MAX6715UTZWD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6715UTZWD3 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 reliable?
The price and inventory of MAX6715UTZWD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6715UTZWD3 is usually 5 days.
3.What payment methods are accepted for MAX6715UTZWD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6715UTZWD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6715UTZWD3?
MAX6715UTZWD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6715UTZWD3 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?
For technical support, including MAX6715UTZWD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6715UTZWD3 requirements.
6.How does Aetrix verify that MAX6715UTZWD3 is sourced from the original manufacturer or authorized distributors?
All MAX6715UTZWD3 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 meets industry standards.
7.What is the process for return or replacement of MAX6715UTZWD3?
All MAX6715UTZWD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6715UTZWD3, 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 part is unused and in its original packaging.
Return procedure for MAX6715UTZWD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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