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Analog Devices Inc./Maxim Integrated MAX6717UKZWD3+T
- Part No.:
- MAX6717UKZWD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6717UKZWD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,812
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Product details
Overview
MAX6717UKZWD3+T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 5-pin SOT23 package, monitoring VCC1 (1.62V threshold) and VCC2 (2.313V threshold) with 210ms reset timeout, open-drain active-low RST output, manual reset input, and watchdog timer support. It ensures reliable system boot and brownout recovery in battery-powered embedded controllers.
For engineers reviewing the MAX6717UKZWD3+T datasheet, MAX6717UKZWD3+T pinout, MAX6717UKZWD3+T application, or MAX6717UKZWD3+T equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), guaranteed reset validity down to VCC = 0.8V, low 14µA supply current at 3.6V, and integrated watchdog with 35s startup/1.12s normal timeout.
Technical Context
The MAX6717UKZWD3+T implements two independent voltage comparators with factory-trimmed thresholds - VTH1 = 1.62V (±30mV) for VCC1 and VTH2 = 2.313V (±62.5mV) for VCC2 - each referenced to a precision 20ppm/°C bandgap. Its reset logic asserts RST low when either supply falls below its threshold and holds for a minimum 210ms after both recover.
It integrates a dual-mode watchdog timer: 35s minimum initial timeout after power-up/manual reset, transitioning to 1.12s normal timeout after first WDI edge detection. The MR input features internal 50kΩ pullup and 200ns propagation delay, while RST output is open-drain with <0.4V VOL at 3.2mA sink and <0.5µA leakage when deasserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 1.62V (typ), ±30mV tolerance - sets precise brownout detection point for primary 1.8V–3.3V rails |
| VCC2 Threshold | 2.313V (typ), ±62.5mV tolerance - enables accurate monitoring of secondary 2.5V/3.3V supplies |
| Reset Timeout | 210ms (min) - ensures sufficient hold time for CPU initialization and peripheral stabilization |
| Supply Current | 14µA (typ) at 3.6V - supports ultra-low-power operation in always-on battery-backed systems |
| Watchdog Timeout | 35s startup / 1.12s normal - accommodates long boot sequences then enforces tight software execution checks |
| Operating Temp | -40°C to +85°C - qualified for industrial and telecom equipment environments |
| Reset Valid Down To | VCC1 or VCC2 ≥ 0.8V - guarantees functional reset assertion during deep brownout conditions |
Pinout & Package
MAX6717UKZWD3+T uses a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm, 0.95mm pitch) with exposed pad for thermal performance. Pin 1 is marked by dot; pin numbering follows standard SOT23 convention (counterclockwise from mark).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output - requires external pullup; asserts low on fault and holds for 210ms timeout |
| 2 | GND | Analog/digital ground reference - must be connected to system ground plane for stable comparator operation |
| 3 | MR | Active-low manual reset input - internal 50kΩ pullup to VCC1; 200ns delay ensures glitch immunity |
| 4 | VCC2 | Secondary supply input - powers internal circuitry when > VCC1 and sets VTH2 monitor reference |
| 5 | VCC1 | Primary supply input - powers device when > VCC2 and sets VTH1 monitor reference and RST pullup source |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Factory-trimmed VTH1 = 1.62V and VTH2 = 2.313V with 20ppm/°C tempco - eliminates external resistor networks and calibration |
| Open-drain RST with guaranteed low voltage | VOL < 0.4V at 3.2mA sink - ensures clean logic-low signal to µP reset pin across wide load range |
| Manual reset with internal pullup | 50kΩ internal pullup to VCC1 - simplifies PCB layout by removing external resistor for MR function |
| Dual-mode watchdog timer | 35s startup + 1.12s normal timeout - prevents false resets during boot while enabling rapid fault detection in runtime |
| Low-power operation | 14µA typical ICC at 3.6V - extends battery life in portable medical and IoT endpoint devices |
Applications
| Battery-Powered Embedded Controller | Industrial PLC I/O Module |
|---|---|
Use Scenario: Supervises dual-rail 3.3V core and 2.5V I/O supplies in a field-deployable sensor node powered by Li-ion battery. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting open-drain RST to ARM Cortex-M4 during brownout or manual reset, with 210ms timeout ensuring full MCU reset sequence. Use Value: Guarantees valid reset down to 0.8V VCC, enabling safe shutdown before battery depletion; 14µA quiescent current extends operational life between charges. |
Use Scenario: Monitors 24V DC-DC converted 5V logic rail and isolated 3.3V communication rail in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Fault detector triggering hardware reset on either supply collapse, with MR input tied to front-panel reset button and watchdog guarding firmware execution. Use Value: Factory-trimmed thresholds eliminate calibration drift over -40°C to +85°C; 210ms timeout exceeds typical FPGA configuration time. |
| Telecom Line Card Power Management | Medical Diagnostic Handheld |
Use Scenario: Ensures clean power sequencing and fault response for dual 12V-derived 3.3V/1.8V rails powering DSP and SerDes in optical line terminal card. IC Role / Device Role / Timing Role: Dual-supply monitor with open-drain RST driving system-level reset tree; WDI connected to DSP GPIO for software liveliness check. Use Value: Immunity to short VCC transients prevents spurious resets during hot-swap events; 35s watchdog startup avoids timeout during lengthy DSP boot. |
Use Scenario: Supervises 3.3V main processor rail and 1.8V imaging sensor rail in portable ultrasound probe requiring FDA-compliant reliability. IC Role / Device Role / Timing Role: Safety-critical reset generator with guaranteed operation down to 0.8V VCC1/VCC2 - critical for graceful error handling before power loss. Use Value: 20ppm/°C threshold tempco maintains accuracy across clinical operating temperatures; low leakage (<25nA) on MR avoids unintended resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6717UKZWD5+T | 420ms reset timeout (vs. 210ms); identical thresholds, package, and features | Suitable where longer reset hold time is required for complex peripherals or FPGA configuration | Select when system boot sequence exceeds 210ms but remains within 420ms margin |
| TPS3808G16DBVR | Single-supply monitor (1.6V threshold only); no VCC2 input, no watchdog, push-pull RST | Lacks dual-monitoring capability and failsafe timing - insufficient for multirail systems requiring coordinated reset | Only viable if design uses single regulated rail and does not require watchdog or manual reset |
Compared with MAX6717UKZWD5+T, the MAX6717UKZWD3+T provides half the reset timeout for faster recovery cycles; compared with TPS3808G16DBVR, it delivers essential dual-rail supervision, watchdog, and manual reset in the same footprint - making it irreplaceable in true multivoltage embedded designs.
Availability
MAX6717UKZWD3+T is available at Aetrix Electronics and suitable for industrial PLC modules, battery-powered diagnostic tools, telecom line cards, and medical handhelds requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6717UKZWD3+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 high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX6715–MAX6729 family was designed specifically for space-constrained multivoltage systems needing reliable, low-power, factory-calibrated supervision without external components - targeting embedded controllers, portable instrumentation, and telecom infrastructure.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6717UKZWD3+T?
The MAX6717UKZWD3+T has factory-trimmed thresholds: VCC1 reset threshold is 1.62V (typical), with ±30mV tolerance over temperature; VCC2 threshold is 2.313V (typical), with ±62.5mV tolerance. These values are fixed by the "Z" and "W" suffixes per Maxim's Reset Voltage Threshold Suffix Guide and do not require external resistor programming.
Does the MAX6717UKZWD3+T support watchdog functionality, and what are its timing modes?
Yes, the MAX6717UKZWD3+T includes a dual-mode watchdog timer. After any reset event (power-up, MR, or brownout), it enters a 35s minimum startup mode to accommodate lengthy system initialization. Once the first valid WDI transition occurs, it switches to a 1.12s minimum normal timeout mode for continuous software execution monitoring - both modes are fully implemented in the MAX6717UKZWD3+T.
What is the package type and pin configuration of the MAX6717UKZWD3+T?
The MAX6717UKZWD3+T is housed in a 5-pin SOT23-5 package (2.9mm × 1.6mm × 1.1mm). Pin 1 is RST (open-drain active-low reset), Pin 2 is GND, Pin 3 is MR (active-low manual reset), Pin 4 is VCC2 (secondary supply), and Pin 5 is VCC1 (primary supply) - matching the MAX6717 series pinout defined in Maxim's datasheet Figure 1.
Can the MAX6717UKZWD3+T monitor three supply voltages?
No, the MAX6717UKZWD3+T is a dual-voltage supervisor and monitors only VCC1 and VCC2. It does not include RSTIN or PFI inputs - those are present only in MAX6719/MAX6720 and higher variants. The "17" in the part number explicitly denotes dual-monitor capability, confirmed by the Selector Guide showing MAX6717 with "2" voltage monitors and no RSTIN/PFI column.
What is the guaranteed minimum reset timeout period for the MAX6717UKZWD3+T?
MAX6717UKZWD3+T guarantees a minimum reset timeout period of 210ms, as indicated by the "D3" suffix in its part number per Maxim's Reset Timeout Period Suffix Guide. This is the duration RST remains asserted low after all monitored supplies recover above their thresholds, ensuring robust CPU and peripheral reset sequencing.
MAX6717UKZWD3+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:
- 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-23-5
MAX6717UKZWD3+T FAQ
1.How can I place an order for MAX6717UKZWD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6717UKZWD3+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 MAX6717UKZWD3+T reliable?
The price and inventory of MAX6717UKZWD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6717UKZWD3+T is usually 5 days.
3.What payment methods are accepted for MAX6717UKZWD3+T?
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4.How is shipping managed for MAX6717UKZWD3+T?
MAX6717UKZWD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6717UKZWD3+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 MAX6717UKZWD3+T?
For technical support, including MAX6717UKZWD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6717UKZWD3+T requirements.
6.How does Aetrix verify that MAX6717UKZWD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6717UKZWD3+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 MAX6717UKZWD3+T meets industry standards.
7.What is the process for return or replacement of MAX6717UKZWD3+T?
All MAX6717UKZWD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6717UKZWD3+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 MAX6717UKZWD3+T part is unused and in its original packaging.
Return procedure for MAX6717UKZWD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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