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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:4,339
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Product details
Overview
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 input and watchdog functionality for embedded control 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, guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6320PUK46CY+T implements a voltage-monitoring comparator with 4.63V nominal reset threshold (±2.5% over -40°C to +125°C), a 140ms minimum reset timeout period, and a 1.6s typical watchdog timeout. Its open-drain RESET output requires an external pullup resistor and supports interface with multiple supply domains up to 6V.
It features a manual reset input (MR) with internal 52kΩ pullup, 100ns glitch rejection, and MR-to-reset propagation delay of 230ns at VCC = 5V. The WDI input detects edges to clear the watchdog timer and draws ≤160µA average current when driven high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal (±2.5% over -40°C to +125°C); ensures reliable brownout detection for 5V systems. |
| Reset Timeout Period | 140ms minimum; guarantees sufficient processor initialization time after VCC rise. |
| Watchdog Timeout | 1.6s typical; enables supervision of long-loop firmware without false triggers. |
| Supply Current | 5–12µA at VCC = 3.6V; ultra-low quiescent current for battery-powered applications. |
| Operating Temperature | -40°C to +125°C; qualified for under-hood automotive and industrial environments. |
| Reset Output Type | Active-low open-drain; allows level-shifting and wired-OR reset bus configurations. |
| AEC-Q100 Grade | Qualified per AEC-Q100 Rev H; meets automotive reliability and stress-test requirements. |
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 only; requires external pullup to any supply ≤6V. |
| 2 | GND | Ground reference for all internal circuitry and reset timing accuracy. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ; rejects 100ns glitches. |
| 4 | WDI | Watchdog input; edge-sensitive (rising/falling); clears watchdog timer on transition; tolerates unconnected state. |
| 5 | VCC | Power supply input (1.0V to 5.5V); reset asserted when VCC falls below 4.63V threshold. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated voltage reference, timing capacitors, and pullup resistors eliminate BOM cost and layout area. |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset assertion even during deep brownout conditions before full power collapse. |
| Immunity to short negative VCC transients | Withstands ≤4µs, 100mV-under-threshold glitches without spurious reset-critical for noisy automotive rails. |
| Open-drain RESET with 6V tolerance | Enables flexible reset bus design across mixed-voltage systems (e.g., 3.3V supervisor driving 5V µP reset). |
| AEC-Q100 qualified | Validated for automotive temperature range (-40°C to +125°C) and reliability stress testing per Rev H. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 5V supply rail in engine ECU exposed to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Supervisory circuit asserting open-drain reset to MCU upon VCC dip below 4.63V or watchdog timeout. Use Value: Prevents erratic MCU behavior during battery voltage sag; AEC-Q100 qualification ensures field reliability. |
Use Scenario: Provides power-on reset and software watchdog for programmable logic controller I/O expansion module. IC Role / Device Role / Timing Role: Generates 140ms reset pulse on power-up and resets MCU if firmware hangs longer than 1.6s. Use Value: Eliminates need for discrete RC reset network; open-drain output interfaces cleanly with isolated 24V backplane logic. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU Subsystem |
|
Use Scenario: Ensures safe startup and fault recovery in battery-backed infusion pump microcontroller. IC Role / Device Role / Timing Role: Detects brownout on 3.3V rail and asserts reset; MR input enables hardware-initiated recalibration sequence. Use Value: Ultra-low 5–12µA supply current extends battery life; 100ns MR glitch rejection prevents false resets from motor noise. |
Use Scenario: Supervises metrology SoC and communication MCU in ANSI C12.22-compliant smart meter. IC Role / Device Role / Timing Role: Monitors 5V auxiliary supply and provides 1.6s watchdog supervision of DLMS/COSEM stack execution. Use Value: Factory-trimmed 4.63V threshold matches meter's regulated 5V rail tolerance; SOT23 footprint saves space on dense meter PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6320PUK46D+T | Same 4.63V threshold and 140ms reset timeout, but 25.6s watchdog (Z-suffix) instead of 1.6s (Y-suffix). | Suitable for applications requiring longer watchdog intervals, e.g., low-duty-cycle sensor nodes. | Select when extended watchdog coverage is needed; otherwise, MAX6320PUK46CY+T provides optimal balance for general-purpose firmware supervision. |
| TPS3808G33DBVR | 3.3V fixed reset threshold, 200ms reset timeout, push-pull active-low output; no manual reset input. | Lacks MR and watchdog; suited for simple power-monitoring where only VCC supervision is required. | Choose only if 3.3V threshold and absence of watchdog/MR are acceptable; not functionally equivalent due to missing features and different reset architecture. |
Compared with MAX6320PUK46CY+T, MAX6320PUK46D+T offers longer watchdog coverage but identical supervision core, while TPS3808G33DBVR omits critical watchdog and manual reset functions-making it unsuitable as a drop-in replacement in systems relying on those capabilities.
Availability
MAX6320PUK46CY+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, and smart energy meter subsystems requiring stable component supply with AEC-Q100 assurance and long-term lifecycle support.
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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6316–MAX6322 family delivers compact, factory-trimmed supervisory circuits with configurable reset thresholds, watchdog timers, and multiple reset output types-targeting space-constrained embedded systems needing high-reliability power monitoring.
FAQ
What is the exact reset threshold voltage of MAX6320PUK46CY+T?
The MAX6320PUK46CY+T has a factory-trimmed nominal reset threshold of 4.63V, with tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in Table 1 and Table 2 of the official datasheet, and corresponds to the "46" suffix in the part number.
Does MAX6320PUK46CY+T support manual reset functionality?
Yes, MAX6320PUK46CY+T includes a dedicated MR (manual reset) input (Pin 3) that asserts reset when pulled low. The MR pin features an internal 52kΩ pullup resistor, 100ns glitch rejection, and a 230ns MR-to-reset propagation delay at VCC = 5V-enabling reliable hardware-initiated reset without external components.
What is the watchdog timeout period for MAX6320PUK46CY+T?
The MAX6320PUK46CY+T has a typical watchdog timeout period of 1.6 seconds, corresponding to the "Y" suffix in its ordering code. This value is specified in Table 2 and Electrical Characteristics section, and remains stable across temperature with ±20% variation over -40°C to +125°C.
Can MAX6320PUK46CY+T operate down to 1V supply voltage?
Yes, MAX6320PUK46CY+T guarantees valid reset output operation down to VCC = 1V, as stated in the Absolute Maximum Ratings and Detailed Description sections. This ensures deterministic reset assertion during deep brownout events before complete power loss.
Is MAX6320PUK46CY+T qualified for automotive applications?
Yes, MAX6320PUK46CY+T is AEC-Q100 qualified (Grade 1, -40°C to +125°C), meeting automotive reliability standards for temperature cycling, humidity, and mechanical stress. Its SOT23 package and 4.63V threshold are specifically aligned with 5V automotive rail monitoring requirements.
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:
- Active
- 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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