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Analog Devices Inc./Maxim Integrated MAX6320PUK30DZ+T
- Part No.:
- MAX6320PUK30DZ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6320PUK30DZ+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,274
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Product details
Overview
MAX6320PUK30DZ+T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low open-drain reset output, manual reset input, and watchdog timer. It features a factory-trimmed 3.0V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum reset timeout, and 25.6s typical watchdog timeout. Used in embedded control systems to ensure reliable power-on initialization and fault recovery.
For engineers reviewing the MAX6320PUK30DZ+T datasheet, MAX6320PUK30DZ+T pinout, MAX6320PUK30DZ+T application, or MAX6320PUK30DZ+T equivalent, key selection criteria include its open-drain reset architecture compatible with multi-supply systems, guaranteed reset validity down to VCC = 1V, AEC-Q100 qualification for automotive-adjacent designs, and factory-trimmed precision without external components.
Technical Context
The MAX6320PUK30DZ+T implements a voltage-monitoring reset generator with independent manual reset (MR) and watchdog input (WDI) logic. Its open-drain RESET output requires an external pullup resistor (e.g., 10kΩ) to any supply up to 6V, enabling level-shifting across mixed-voltage domains. The internal 52kΩ MR pullup allows direct switch-to-ground connection without external biasing.
Watchdog functionality clears on any WDI edge (rising or falling) with 50ns pulse-width capability; timeout periods are factory-set and non-adjustable. Reset assertion occurs when VCC falls below 3.0V, MR is pulled low, or WDI remains static beyond 25.6s - all followed by a fixed 140ms deassertion delay after recovery conditions are met.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.0V ±2.5% over -40°C to +125°C - ensures accurate brownout detection at nominal 3.0V rail |
| Reset Timeout Period | 140ms minimum - guarantees sufficient hold time for microprocessor initialization sequences |
| Watchdog Timeout | 25.6s typical - provides long-duration software execution monitoring for low-duty-cycle firmware |
| Supply Current | 5µA typical at VCC = 3.6V - enables battery-powered operation with negligible quiescent drain |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion during deep brownout down to 1V VCC |
| RESET Output Type | Active-low open-drain - allows wired-OR configuration and interface to multiple supply domains |
| Package | SOT23-5 (U5+2A) - 2.9mm × 1.6mm footprint ideal for space-constrained PCB layouts |
Pinout & Package
MAX6320PUK30DZ+T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5+2A, outline 21-0057). The compact surface-mount form factor supports automated assembly and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low open-drain output - sinks current only; requires external pullup to define logic-high level |
| 2 | GND | Ground reference - common return path for all internal circuits and external decoupling |
| 3 | MR | Manual reset input - active-low; internally pulled up to VCC via 52kΩ resistor; accepts TTL/CMOS logic |
| 4 | WDI | Watchdog input - edge-sensitive; resets internal timer on rising or falling transition; 50ns minimum pulse width |
| 5 | VCC | Supply voltage input - monitored for reset generation; absolute max rating is +6V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Factory-trimmed 3.0V threshold and fixed 140ms/25.6s timing eliminate need for resistors, capacitors, or trimming |
| Open-drain RESET with multi-supply compatibility | Allows pullup to any voltage ≤6V - enables use with 1.8V, 3.3V, or 5V microcontrollers on same reset bus |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during severe brownout - critical for fail-safe embedded systems |
| AEC-Q100 qualified | Validated for automotive-grade temperature range (-40°C to +125°C) and reliability requirements |
| MR glitch rejection | 100ns immunity to fast transients - prevents spurious resets from noise on manual reset line |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 3.3V MCU supply in programmable logic controller exposed to wide ambient temperature swings and EMI-rich factory environments. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset, manual reset via front-panel button, and watchdog supervision of main application firmware. Use Value: Prevents runaway code execution during voltage sags; open-drain output interfaces cleanly with 5V CAN transceiver reset line using shared 10kΩ pullup. |
Use Scenario: Embedded in door module controlling window lift, mirror fold, and interior lighting - powered from vehicle battery with cold-crank voltage drops. IC Role / Device Role / Timing Role: Resets 32-bit ARM Cortex-M MCU during battery undervoltage events and monitors firmware liveness via WDI toggling. Use Value: AEC-Q100 qualification ensures operation at -40°C startup; 140ms reset hold time satisfies MCU boot ROM timing requirements. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Ensures safe restart of safety-critical dosing controller after AC power interruption or battery switchover. IC Role / Device Role / Timing Role: Provides fail-safe reset initiation and periodic watchdog verification of motor control loop integrity. Use Value: 25.6s watchdog period accommodates extended calibration routines without false triggers; 3.0V threshold matches primary Li-ion cell discharge profile. |
Use Scenario: Supervises metrology SoC and communication subsystem in ANSI C12.20-certified electricity meter operating continuously for 15+ years. IC Role / Device Role / Timing Role: Generates clean power-on reset and detects firmware hangs in RF mesh networking stack. Use Value: 5µA supply current minimizes self-discharge of backup supercapacitor; open-drain output avoids contention with isolated RS-485 transceiver reset pin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6320PUK30DY+T | Same 3.0V threshold and 140ms reset timeout, but 1.6s watchdog period instead of 25.6s | Better suited for real-time firmware with frequent WDI servicing; unsuitable for long-latency calibration or sleep modes | Select when watchdog must trigger faster than 25.6s - e.g., for responsive UI thread monitoring |
| TPS3808G30DBVR | 3.0V threshold, 200ms reset timeout, push-pull active-low output, no manual reset input | Lacks MR pin and open-drain flexibility; requires dedicated 3.0V supply rail for reset assertion | Choose for simpler designs where MR is unnecessary and single-supply reset signaling suffices |
Compared with MAX6320PUK30DY+T and TPS3808G30DBVR, the MAX6320PUK30DZ+T uniquely combines long-interval watchdog supervision (25.6s), manual reset capability, and open-drain output - making it optimal for battery-backed or intermittently active systems requiring robust fault recovery without layout changes.
Availability
MAX6320PUK30DZ+T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended product lifecycles.
Supply support for MAX6320PUK30DZ+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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6316–MAX6322 family delivers highly integrated μP supervisory functions - specifically engineered for systems needing reliable power monitoring, manual reset, and configurable watchdog supervision in minimal footprint.
FAQ
What is the exact reset threshold voltage for MAX6320PUK30DZ+T?
The MAX6320PUK30DZ+T has a factory-trimmed nominal reset threshold of 3.0V, with tolerance of ±1.5% at +25°C and ±2.5% over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during manufacturing and does not require external calibration - the "30" in the part number directly encodes the 3.0V threshold per Maxim's naming convention.
Does MAX6320PUK30DZ+T support manual reset functionality?
Yes, MAX6320PUK30DZ+T includes a dedicated MR (manual reset) input on Pin 3. Pulling MR low asserts reset for the full 140ms timeout period, even if VCC remains above 3.0V. The pin features an internal 52kΩ pullup resistor, allowing direct connection of a momentary switch to ground without external components.
What is the watchdog timeout period of MAX6320PUK30DZ+T?
The MAX6320PUK30DZ+T has a typical watchdog timeout period of 25.6s, indicated by the "Z" suffix in its ordering code. This is the longest available option in the MAX6320 series and is factory-programmed - not adjustable via external components or pins. The timer resets on any WDI edge (rising or falling) with ≥50ns pulse width.
Can MAX6320PUK30DZ+T drive a reset line referenced to a different supply voltage?
Yes, MAX6320PUK30DZ+T's open-drain RESET output (Pin 1) can interface with reset lines tied to supplies other than VCC. Connect an external pullup resistor from RESET to any voltage up to 6V - enabling interoperability between 1.8V, 3.3V, or 5V microcontrollers and transceivers on the same bus without level shifters.
Is MAX6320PUK30DZ+T qualified for automotive applications?
MAX6320PUK30DZ+T is AEC-Q100 qualified for Grade 1 (-40°C to +125°C), confirming its suitability for automotive under-hood and body electronics. While not marked with "/V" (which denotes full automotive PPAP compliance), its qualification covers thermal, electrical, and reliability testing per AEC standards - supporting use in body control modules and infotainment power domains.
MAX6320PUK30DZ+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:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6320PUK30DZ+T FAQ
1.How can I place an order for MAX6320PUK30DZ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6320PUK30DZ+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 MAX6320PUK30DZ+T reliable?
The price and inventory of MAX6320PUK30DZ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6320PUK30DZ+T is usually 5 days.
3.What payment methods are accepted for MAX6320PUK30DZ+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6320PUK30DZ+T transactions.
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4.How is shipping managed for MAX6320PUK30DZ+T?
MAX6320PUK30DZ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6320PUK30DZ+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 MAX6320PUK30DZ+T?
For technical support, including MAX6320PUK30DZ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6320PUK30DZ+T requirements.
6.How does Aetrix verify that MAX6320PUK30DZ+T is sourced from the original manufacturer or authorized distributors?
All MAX6320PUK30DZ+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 MAX6320PUK30DZ+T meets industry standards.
7.What is the process for return or replacement of MAX6320PUK30DZ+T?
All MAX6320PUK30DZ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6320PUK30DZ+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 MAX6320PUK30DZ+T part is unused and in its original packaging.
Return procedure for MAX6320PUK30DZ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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