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Analog Devices Inc./Maxim Integrated MAX6715AUTZWD3+T
- Part No.:
- MAX6715AUTZWD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6715AUTZWD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,957
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Product details
Overview
MAX6715AUTZWD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 140ms minimum reset timeout, and push-pull active-low RST output. It ensures reliable system reset during brownout conditions in multivoltage embedded systems.
For engineers reviewing the MAX6715AUTZWD3+T datasheet, MAX6715AUTZWD3+T pinout, MAX6715AUTZWD3+T application, or MAX6715AUTZWD3+T equivalent, key selection criteria include dual-rail voltage monitoring capability, guaranteed reset validity down to VCC = 0.8V, watchdog disable support via unconnected WDI, and compatibility with industrial temperature range (−40°C to +125°C) designs.
Technical Context
The MAX6715AUTZWD3+T integrates two independent voltage comparators for primary (VCC1) and secondary (VCC2) supply rails, each with factory-trimmed thresholds - VTH1 = 4.625V (typ) and VTH2 = 3.075V (typ) - and 0.5% hysteresis. Its reset logic asserts RST low when either supply falls below threshold and holds for a fixed 140ms timeout after recovery.
This device features a push-pull RST output referenced to VCC1, manual-reset input (MR) with internal 50kΩ pullup, and watchdog disable functionality (WDI left unconnected). It operates without external components for basic supervision, while supporting optional RSTIN/PFI inputs for triple-voltage or power-fail monitoring in extended configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCC1 = 0.8V to 5.5V; VCC2 = 0.8V to 5.5V - enables operation across wide battery and regulated rail voltages including sub-1V core supplies. |
| Reset Thresholds | VTH1 = 4.625V (typ), VTH2 = 3.075V (typ) - factory-trimmed for precise detection of 5V and 3.3V rail failures without calibration. |
| Reset Timeout Period | 140ms (min) - ensures sufficient hold time for processor initialization and peripheral stabilization after power recovery. |
| Supply Current | 14µA (typ) at 3.6V - ultra-low quiescent current extends battery life in portable equipment. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and telecom infrastructure applications. |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup resistor and provides robust drive into heavy capacitive loads. |
| Reset Validity Limit | Guaranteed valid down to VCC1 or VCC2 = 0.8V - ensures deterministic reset assertion even during deep brownout conditions. |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/RST1 | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2 undervoltage, MR low, or watchdog timeout; remains low for 140ms after recovery. |
| 2 - GND | Ground reference | Common return path for all internal comparators, timers, and output drivers; must be low-impedance connection to system ground plane. |
| 3 - MR | Manual-reset input | Active-low CMOS-compatible input with internal 50kΩ pullup to VCC1; pulse ≥1µs forces reset; immune to <100ns glitches. |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when VCC2 > VCC1; input to VCC2 comparator with 3.075V (typ) threshold; supports 0.9V–3.3V monitoring range. |
| 5 - VCC1 | Primary supply input | Main power source and reference for RST output; input to VCC1 comparator with 4.625V (typ) threshold; powers internal logic when VCC1 > VCC2. |
| 6 - WDI | Watchdog input | Unconnected state disables watchdog; rising/falling edge resets 1.12s (min) normal timeout; long startup period (35s min) accommodates boot sequences. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (e.g., 5V I/O rail) and VCC2 (e.g., 3.3V core rail) with separate thresholds and hysteresis - eliminates need for two discrete supervisors. |
| 140ms fixed reset timeout | Guaranteed minimum duration ensures reliable processor reset hold time across temperature and voltage variations - no external RC timing components required. |
| Push-pull RST output | Drives high/low actively without external pullup - simplifies PCB layout, improves noise immunity, and supports direct interface to bidirectional μP reset pins via series resistor. |
| Watchdog disable by open-circuit WDI | Internal 200nA current source detects floating WDI - allows full watchdog functionality or complete disable with zero component count change. |
| 0.8V minimum operating voltage | Valid reset assertion and output logic guaranteed even as VCC1 or VCC2 drops to 0.8V - critical for fail-safe behavior in deep brownout scenarios. |
Applications
| Industrial PLC Controller | Telecom Line Card |
|---|---|
Use Scenario: Monitors 5V backplane power and 3.3V FPGA core supply in modular rack-mounted controllers subject to intermittent brownouts. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to CPU and FPGA upon either rail collapse, with 140ms hold time ensuring full reinitialization. Use Value: Prevents partial configuration lockup by guaranteeing simultaneous reset of all logic domains during shared power faults. |
Use Scenario: Embedded in carrier-grade Ethernet switch line cards requiring continuous uptime and graceful shutdown on AC/DC converter failure. IC Role / Device Role / Timing Role: Supervises primary 12V-to-5V DC-DC output and secondary 5V-to-3.3V LDO output; triggers controlled reboot before data corruption occurs. Use Value: Enables deterministic recovery from transient supply dips without requiring software intervention or external sequencers. |
| Automotive Infotainment Head Unit | Medical Portable Monitor |
Use Scenario: Installed in AEC-Q100-compliant infotainment systems where battery voltage sag during cold cranking must not cause MCU lockup. IC Role / Device Role / Timing Role: Monitors 5V system rail and 3.3V SoC core rail; asserts reset if either drops below threshold during engine start, holding for 140ms post-recovery. Use Value: Maintains functional safety integrity by preventing undefined MCU states during ISO 16750-2 pulse 4 transients. |
Use Scenario: Powers patient-monitoring devices running on single-cell Li-ion batteries where undervoltage protection must preserve data logging during discharge. IC Role / Device Role / Timing Role: Supervises main 3.3V regulator output and low-power 1.8V sensor interface rail; initiates safe shutdown sequence before brownout-induced memory corruption. Use Value: Extends usable battery life by enabling operation down to 0.8V per rail while guaranteeing clean reset before critical data loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6716AUTZWD3+T | Identical pinout and package, but open-drain RST output instead of push-pull - requires external pullup resistor. | Suitable where level-shifting or wired-OR reset bus is needed; less suitable for direct μP reset pin drive without series resistor. | Select MAX6716AUTZWD3+T only if open-drain topology is explicitly required for system-level reset arbitration. |
| TPS3808G33DBVR | Single-supply supervisor (monitors only VCC); 3.3V fixed threshold; 200ms timeout; SOT23-6 package. | Lacks VCC2 monitoring capability - cannot replace dual-rail supervision without adding second IC or redesigning power architecture. | Choose TPS3808G33DBVR only for cost-sensitive single-rail applications where secondary supply monitoring is unnecessary. |
Compared with MAX6715AUTZWD3+T, MAX6716AUTZWD3+T offers identical supervision functionality but demands external pullup for RST, while TPS3808G33DBVR reduces BOM count only in single-rail systems - neither provides drop-in replacement for dual-supply monitoring with push-pull drive.
Availability
MAX6715AUTZWD3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, telecom line cards, and automotive infotainment head units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6715AUTZWD3+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) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers compact, ultra-low-power supervisory solutions optimized for multivoltage embedded systems where reliability, small size, and guaranteed reset behavior under brownout are critical.
FAQ
What is the reset timeout period of the MAX6715AUTZWD3+T?
The MAX6715AUTZWD3+T has a fixed minimum reset timeout period of 140ms. This duration is guaranteed over the full operating temperature range (−40°C to +125°C) and supply voltage range (VCC1/VCC2 ≥ 0.8V). The timeout begins when the monitored supply recovers above its threshold and ends with deassertion of the push-pull RST output. No external components are required to set this timing.
Does the MAX6715AUTZWD3+T support watchdog functionality?
The MAX6715AUTZWD3+T includes a watchdog input (WDI) pin, but it is disabled by default when left unconnected. To enable watchdog monitoring, connect WDI to a microprocessor I/O pin that toggles within 1.12s (min) during normal operation. The device features a 35s (min) startup window after reset, allowing time for system boot before watchdog enforcement begins.
Can the MAX6715AUTZWD3+T monitor a third voltage rail?
No - the MAX6715AUTZWD3+T is configured exclusively for dual-rail monitoring (VCC1 and VCC2). It does not include the RSTIN or PFI pins required for auxiliary voltage supervision. For triple-voltage monitoring, select variants such as MAX6719AUTZWD3+T (with RSTIN) or MAX6728AUTZWD3+T (with PFI), which share the same SOT23-6 package and timeout suffix but add dedicated input terminals.
What is the function of the MR pin on the MAX6715AUTZWD3+T?
The MR (manual-reset) pin on the MAX6715AUTZWD3+T is an active-low input with internal 50kΩ pullup to VCC1. Pulling MR low for ≥1µs forces immediate assertion of the RST output for the full 140ms timeout period, regardless of VCC1/VCC2 status. This enables hardware-initiated resets via pushbutton switches or system-level control signals without software involvement.
Is the MAX6715AUTZWD3+T compatible with AEC-Q100 automotive qualification?
The MAX6715AUTZWD3+T itself is not AEC-Q100 qualified; however, the closely related MAX6719AUTTWD1/V+T variant in the same family is explicitly AEC-Q100 Grade 2 qualified (−40°C to +105°C). For automotive applications requiring formal qualification, engineers should specify the MAX6719AUTTWD1/V+T or consult Maxim's automotive-grade product matrix rather than relying on MAX6715AUTZWD3+T.
MAX6715AUTZWD3+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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6715AUTZWD3+T FAQ
1.How can I place an order for MAX6715AUTZWD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6715AUTZWD3+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 MAX6715AUTZWD3+T reliable?
The price and inventory of MAX6715AUTZWD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6715AUTZWD3+T is usually 5 days.
3.What payment methods are accepted for MAX6715AUTZWD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6715AUTZWD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6715AUTZWD3+T?
MAX6715AUTZWD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6715AUTZWD3+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 MAX6715AUTZWD3+T?
For technical support, including MAX6715AUTZWD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6715AUTZWD3+T requirements.
6.How does Aetrix verify that MAX6715AUTZWD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6715AUTZWD3+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 MAX6715AUTZWD3+T meets industry standards.
7.What is the process for return or replacement of MAX6715AUTZWD3+T?
All MAX6715AUTZWD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6715AUTZWD3+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 MAX6715AUTZWD3+T part is unused and in its original packaging.
Return procedure for MAX6715AUTZWD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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