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Analog Devices Inc./Maxim Integrated MAX6320PUK46CY-T
- Part No.:
- MAX6320PUK46CY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6320PUK46CY-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,419
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Product details
Overview
The MAX6320PUK46CY-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low open-drain reset output, 4.63V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply integrity and provides manual reset and watchdog functionality for embedded microcontroller systems requiring robust power-on/brownout detection.
For engineers reviewing the MAX6320PUK46CY-T datasheet, MAX6320PUK46CY-T pinout, MAX6320PUK46CY-T application, or MAX6320PUK46CY-T equivalent, key selection criteria include its open-drain reset architecture compatible with multi-supply systems, guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
This device implements a precision voltage monitor with laser-trimmed internal resistor divider setting VRST = 4.63V (±2.5% over -40°C to +125°C), coupled with independent reset generator and watchdog timer circuits. The watchdog clears on any WDI edge (rising or falling) and times out after 1.6s if unattended.
The open-drain RESET output requires an external pullup resistor (e.g., 10kΩ) to any supply up to 6V, enabling level-shifting across voltage domains. Manual reset (MR) features internal 52kΩ pullup, 100ns glitch rejection, and deassertion delay of 230ns at VCC = 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% over -40°C to +125°C - ensures reliable brownout detection for 5V systems with margin |
| Reset Timeout Period | 140ms minimum - guarantees sufficient processor initialization time after power stabilization |
| Watchdog Timeout | 1.6s typical - provides fault recovery window for mid-speed firmware execution loops |
| Supply Current | 5µA typical at VCC = 3.6V - enables battery-powered operation with minimal quiescent drain |
| Operating Temperature | -40°C to +125°C - supports under-hood automotive and industrial ambient conditions |
| Reset Output Type | Active-low open-drain - allows shared reset bus with mixed-voltage peripherals and external pullup flexibility |
| AEC-Q100 Qualification | Qualified - meets automotive reliability standards for production vehicle ECUs |
Pinout & Package
MAX6320PUK46CY-T is housed in a 5-pin SOT23 package (package code U5+2A, outline 21-0057), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low open-drain output - sinks current when asserted; 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; asserts reset when driven low |
| 4 | WDI | Watchdog input - edge-sensitive; reset triggered if no transition occurs within 1.6s timeout period |
| 5 | VCC | Supply voltage input - monitored for undervoltage; operates from 1.0V to 5.5V; reset asserted below 4.63V |
Key Features
| Feature | Design Value |
|---|---|
| Open-drain RESET output | Supports level-shifting across multiple supply domains (up to 6V pullup) without level translators |
| Factory-trimmed 4.63V threshold | Eliminates external resistor network; achieves ±2.5% accuracy over full temperature range |
| 140ms reset timeout | Ensures stable power delivery before releasing microcontroller from reset state |
| 1.6s watchdog period | Matches typical firmware loop durations in automotive body control modules and industrial PLCs |
| AEC-Q100 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power management |
Applications
| Automotive Body Control Module | Industrial PLC I/O Card |
|---|---|
|
Use Scenario: Monitors 5V rail powering MCU and CAN transceiver in door module ECU. IC Role / Device Role / Timing Role: Supervisory IC asserting open-drain RESET to coordinate safe startup and watchdog-triggered recovery. Use Value: Prevents erratic MCU behavior during battery voltage sag; enables automatic recovery from firmware lockup without service intervention. |
Use Scenario: Ensures deterministic reset sequencing for ARM-based controller managing analog input/output expansion. IC Role / Device Role / Timing Role: Voltage monitor and watchdog supervisor providing 140ms power-on reset and 1.6s software fault detection. Use Value: Guarantees clean boot after AC line interruption; eliminates need for external RC timing components. |
| Portable Medical Instrument | Battery-Powered IoT Sensor Node |
|
Use Scenario: Supervises Li-ion powered microcontroller in handheld diagnostic device with dual-voltage peripherals. IC Role / Device Role / Timing Role: Open-drain RESET interface allows shared reset line with 3.3V sensor ICs and 5V display driver. Use Value: Enables single reset net across mixed-supply subsystems while maintaining low 5µA quiescent current. |
Use Scenario: Provides brownout protection and watchdog supervision for ultra-low-power BLE microcontroller in environmental sensor. IC Role / Device Role / Timing Role: Resets MCU when battery drops below 4.63V; detects firmware hang via WDI edge monitoring. Use Value: Extends usable battery life by eliminating false resets during transient load dips; ensures autonomous recovery from sleep-mode faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6320PUK46DZ-T | Same 4.63V threshold and 140ms reset timeout, but 25.6s watchdog period instead of 1.6s | Suitable for slower-booting systems where extended fault detection window is required | Select when longer watchdog interval aligns with firmware execution profile |
| TPS3808G33DBVR | 3.3V fixed reset threshold, push-pull active-low output, no manual reset input | Lacks MR and watchdog; designed for simpler power-monitoring-only use cases | Choose only if system does not require manual reset assertion or software fault detection |
Compared with MAX6320PUK46CY-T, MAX6320PUK46DZ-T extends watchdog coverage for long-loop firmware, while TPS3808G33DBVR reduces feature set to lower cost and complexity-neither offers pin-compatible replacement, requiring layout review for RESET drive strength and MR/WDI signal routing.
Availability
MAX6320PUK46CY-T is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O cards, portable medical instruments, and battery-powered IoT sensor nodes requiring stable component supply with AEC-Q100 compliance.
Supply support for MAX6320PUK46CY-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 high-performance analog and mixed-signal semiconductor solutions for demanding industrial, automotive, and communications applications.
The MAX6316–MAX6322 family delivers compact, factory-trimmed supervisory circuits targeting space-constrained embedded systems needing precise voltage monitoring, manual reset, and watchdog functionality in automotive and industrial environments.
FAQ
What is the exact reset threshold voltage of the MAX6320PUK46CY-T?
The MAX6320PUK46CY-T has a factory-trimmed nominal reset threshold of 4.63V, specified as 4.514V (min) to 4.746V (max) over the full operating temperature range of -40°C to +125°C. This value is laser-trimmed during manufacturing and does not require external calibration or resistor networks.
Does the MAX6320PUK46CY-T support manual reset functionality?
Yes, the MAX6320PUK46CY-T includes a dedicated MR (manual reset) input pin (Pin 3). Driving MR low asserts the RESET output for the full 140ms timeout period. The MR pin features an internal 52kΩ pullup resistor, allowing it to be left unconnected when unused, and rejects glitches as short as 100ns.
What type of reset output does the MAX6320PUK46CY-T provide?
The MAX6320PUK46CY-T provides an active-low open-drain RESET output (Pin 1). It sinks current when asserted but cannot source current, requiring an external pullup resistor to define the logic-high level. This architecture supports level-shifting and shared reset buses across different supply voltages up to 6V.
Is the MAX6320PUK46CY-T qualified for automotive applications?
Yes, the MAX6320PUK46CY-T is AEC-Q100 qualified, meeting the stress test requirements for automotive-grade reliability. It operates across -40°C to +125°C and is suitable for under-hood and cabin applications including body control modules, ADAS sensors, and infotainment power management subsystems.
What is the watchdog timeout period of the MAX6320PUK46CY-T?
The MAX6320PUK46CY-T features a typical watchdog timeout period of 1.6 seconds. The watchdog timer clears on any rising or falling edge at the WDI pin (Pin 4); if no edge occurs within 1.6s, the device asserts the RESET output to recover from potential firmware lockup.
MAX6320PUK46CY-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:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6320PUK46CY-T FAQ
1.How can I place an order for MAX6320PUK46CY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6320PUK46CY-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 MAX6320PUK46CY-T reliable?
The price and inventory of MAX6320PUK46CY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6320PUK46CY-T is usually 5 days.
3.What payment methods are accepted for MAX6320PUK46CY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6320PUK46CY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6320PUK46CY-T?
MAX6320PUK46CY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6320PUK46CY-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 MAX6320PUK46CY-T?
For technical support, including MAX6320PUK46CY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6320PUK46CY-T requirements.
6.How does Aetrix verify that MAX6320PUK46CY-T is sourced from the original manufacturer or authorized distributors?
All MAX6320PUK46CY-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 MAX6320PUK46CY-T meets industry standards.
7.What is the process for return or replacement of MAX6320PUK46CY-T?
All MAX6320PUK46CY-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6320PUK46CY-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 MAX6320PUK46CY-T part is unused and in its original packaging.
Return procedure for MAX6320PUK46CY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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