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Analog Devices Inc./Maxim Integrated MAX6717AUKSFD2+T
- Part No.:
- MAX6717AUKSFD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6717AUKSFD2+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,593
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Product details
Overview
MAX6717AUKSFD2+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 1120ms minimum reset timeout, open-drain RST output, and manual-reset input - used to ensure reliable power-on reset and brownout recovery in telecom power systems.
For engineers reviewing the MAX6717AUKSFD2+T datasheet, MAX6717AUKSFD2+T pinout, MAX6717AUKSFD2+T application, or MAX6717AUKSFD2+T equivalent, key selection criteria include dual-rail voltage monitoring capability, guaranteed reset validity down to VCC = 0.8V, low 14µA typical supply current at 3.6V, immunity to short VCC transients, and compatibility with -40°C to +125°C industrial operating environments.
Technical Context
The MAX6717AUKSFD2+T implements independent dual-voltage supervision with separate comparators for VCC1 and VCC2, each with factory-trimmed thresholds and 0.5% hysteresis. It asserts an active-low open-drain RST output when either supply falls below its threshold and holds reset for a fixed 1120ms timeout after both supplies recover.
This variant includes MR (manual-reset) input with internal 50kΩ pullup to VCC1 and supports reset assertion via MR low pulse ≥1µs; it lacks watchdog, RSTIN, PFI/PFO, and RST2 functions - confirmed by pin mapping and suffix D2 (reset timeout) and F (VTH1 = 4.625V / VTH2 = 3.075V) per Maxim's Reset Voltage Threshold Suffix Guide.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±125mV tolerance) - ensures reliable reset assertion during 5V rail brownout before critical logic fails. |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±75mV tolerance) - matches common 3.3V I/O supply margin for coordinated system reset. |
| Reset Timeout Period | 1120ms minimum - provides sufficient hold time for slow-start DC-DC converters and firmware initialization sequences. |
| Supply Current | 14µA typical at 3.6V - enables use in always-on battery-backed subsystems without significant quiescent drain. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial control, and telecom base station applications. |
| Reset Output Type | Open-drain RST - allows wired-OR configuration with other reset sources and flexible pullup voltage selection (e.g., 1.8V, 3.3V, or 5V). |
| Minimum Valid VCC | 0.8V - guarantees correct reset logic state even during deep brownout, preventing spurious release before full power recovery. |
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 | Active-low open-drain reset output - asserted when VCC1 < 4.625V or VCC2 < 3.075V; requires external pullup; drives µP reset pin. |
| 2 | GND | Ground reference for all internal comparators and logic - must be low-impedance connection to system ground plane. |
| 3 | MR | Active-low manual-reset input - internal 50kΩ pullup to VCC1; <1µs glitch rejection; resets system on falling edge ≥1µs wide. |
| 4 | VCC2 | Secondary supply input - powers internal VCC2 comparator and sets RST2 reference (not present in this variant); monitors 3.3V rail. |
| 5 | VCC1 | Primary supply input - powers core logic and VCC1 comparator; sets RST output reference; accepts 0.8V–5.5V range. |
| 6 | NC | No connect - pin 6 is unconnected in MAX6717A; not bonded internally; must remain floating or grounded per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (5V domain) and VCC2 (3.3V domain) with separate thresholds and hysteresis - eliminates need for two discrete supervisors. |
| Guaranteed reset validity down to 0.8V | Ensures deterministic reset behavior during severe brownout conditions where VCC drops below 1.0V - critical for fail-safe embedded systems. |
| Low 14µA supply current | Reduces standby power in always-on subsystems (e.g., modem wake-up logic, battery-backed RTC) without compromising supervision accuracy. |
| Immunity to short VCC transients | Rejects glitches ≤20µs duration (at 100mV overdrive), preventing false resets during switching noise or load dump events. |
| Manual-reset input with internal pullup | Eliminates external resistor for MR function - simplifies BOM and PCB layout while supporting pushbutton-initiated recovery without external debounce. |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring primary 5V backplane and secondary 3.3V FPGA I/O supply in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to FPGA and management MCU upon any rail undervoltage. Use Value: Prevents partial configuration or metastability during asymmetric rail collapse - ensures deterministic boot sequence across distributed telecom hardware. |
Use Scenario: Ensuring clean reset of ARM-based controller and isolated analog I/O ASICs in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary supervisor for 5V logic rail and 3.3V interface rail, with MR enabling field-service forced reboot via front-panel button. Use Value: Eliminates need for discrete RC reset networks and external reset ICs - reduces component count and improves long-term reliability in high-vibration environments. |
| Server Baseboard Management | Automotive ADAS Domain Controller |
|
Use Scenario: Supervising 5V auxiliary power and 3.3V BMC (Baseboard Management Controller) supply in redundant server power architectures. IC Role / Device Role / Timing Role: Fail-safe reset source for BMC during cold-boot and hot-swap events, with 1120ms timeout matching BMC firmware initialization window. Use Value: Guarantees BMC remains held in reset until both rails stabilize - prevents erroneous IPMI command execution during power ramp-up. |
Use Scenario: Monitoring 5V sensor fusion processor supply and 3.3V camera interface rail in ISO 26262-compliant autonomous driving ECUs. IC Role / Device Role / Timing Role: ASIL-B capable dual-supply monitor providing diagnostic reset signal to safety MCU upon rail fault detection. Use Value: Meets functional safety requirement for independent voltage supervision - enables safe state entry without software intervention during power anomaly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6715AUKSFD2+T | Same SOT23-6 package, identical 1120ms timeout and D2 suffix, but VTH1 = 4.500V / VTH2 = 3.000V - tighter 5V/3.3V margin. | Preferred where 5V rail tolerance is ±3% (e.g., tightly regulated LDO outputs), requiring earlier reset assertion than MAX6717AUKSFD2+T. | Select when system requires lower VCC1 trip point to match stricter 5V supply spec; otherwise, MAX6717AUKSFD2+T offers wider margin. |
| TPS3808G33DBVR | Single-supply 3.3V supervisor (no VCC2 input), 200ms timeout, push-pull RST, 1.4µA IQ - lower current but no dual-rail capability. | Only suitable for single-rail systems; cannot replace MAX6717AUKSFD2+T in dual-supply designs without adding second supervisor. | Use only if redesigning for single-rail architecture; MAX6717AUKSFD2+T remains optimal for existing dual-rail layouts requiring minimal change. |
Compared with MAX6715AUKSFD2+T, the MAX6717AUKSFD2+T provides higher VCC1/VCC2 thresholds for more robust brownout immunity, while TPS3808G33DBVR offers ultra-low IQ but sacrifices dual-supply functionality - making MAX6717AUKSFD2+T the only drop-in solution for legacy dual-rail designs requiring 4.625V/3.075V thresholds and 1120ms hold time.
Availability
MAX6717AUKSFD2+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive ADAS domain controllers requiring stable component supply, long-lifecycle support, and AEC-Q100-aligned reliability.
Supply support for MAX6717AUKSFD2+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 ultra-low-voltage µP supervisory circuits optimized for multivoltage systems where simultaneous monitoring of primary and secondary rails is essential for system-level reliability.
FAQ
What is the reset threshold voltage for VCC1 on the MAX6717AUKSFD2+T?
The MAX6717AUKSFD2+T has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with ±125mV tolerance over temperature. This value is fixed by the 'F' suffix in the part number and is verified across the -40°C to +125°C operating range. The MAX6717AUKSFD2+T uses this threshold to assert RST when the primary 5V supply drops below specification, ensuring clean reset before logic corruption occurs.
Does the MAX6717AUKSFD2+T support watchdog timer functionality?
No, the MAX6717AUKSFD2+T does not include watchdog timer functionality. Its pinout omits WDI, and the 'D2' suffix indicates reset timeout only - not watchdog enable. Watchdog capability is present only in MAX6721A–MAX6729A/MAX6797A variants. For systems requiring watchdog supervision, the MAX6717AUKSFD2+T must be paired with a separate watchdog IC or replaced with a MAX6727AUKSFD2+T.
What is the function of pin 6 on the MAX6717AUKSFD2+T?
Pin 6 on the MAX6717AUKSFD2+T is a no-connect (NC) terminal - it is not bonded internally and serves no electrical function. Per Maxim's pin description table, this pin is unassigned in the MAX6717A variant. It should be left floating on the PCB; grounding or routing is unnecessary and may risk unintended coupling in high-noise environments.
Can the MAX6717AUKSFD2+T monitor a third voltage rail?
No, the MAX6717AUKSFD2+T does not support triple-voltage monitoring. It lacks RSTIN and PFI inputs - confirmed by its 6-pin SOT23 package and absence of those pins in the functional diagram and pin table. Triple-monitoring capability is exclusive to MAX6719A/MAX6720A/MAX6723A–MAX6727A variants with RSTIN or PFI pins. For third-rail supervision, a separate voltage detector or upgrade to MAX6723AUKSFD2+T is required.
What is the maximum supply voltage the MAX6717AUKSFD2+T can tolerate on VCC1 and VCC2?
The MAX6717AUKSFD2+T supports absolute maximum supply voltages of +6V on both VCC1 and VCC2 pins, as specified in the Absolute Maximum Ratings table. However, functional operation is guaranteed only from 0.8V to 5.5V. Operating above 5.5V risks latch-up or permanent damage, even briefly - design margins must keep VCC1 ≤ 5.5V and VCC2 ≤ 5.5V under all conditions, including transient overshoot.
MAX6717AUKSFD2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.05V, 2.925V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 8.8ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6717AUKSFD2+T FAQ
1.How can I place an order for MAX6717AUKSFD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6717AUKSFD2+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 MAX6717AUKSFD2+T reliable?
The price and inventory of MAX6717AUKSFD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6717AUKSFD2+T is usually 5 days.
3.What payment methods are accepted for MAX6717AUKSFD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6717AUKSFD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6717AUKSFD2+T?
MAX6717AUKSFD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6717AUKSFD2+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 MAX6717AUKSFD2+T?
For technical support, including MAX6717AUKSFD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6717AUKSFD2+T requirements.
6.How does Aetrix verify that MAX6717AUKSFD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6717AUKSFD2+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 MAX6717AUKSFD2+T meets industry standards.
7.What is the process for return or replacement of MAX6717AUKSFD2+T?
All MAX6717AUKSFD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6717AUKSFD2+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 MAX6717AUKSFD2+T part is unused and in its original packaging.
Return procedure for MAX6717AUKSFD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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