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Analog Devices Inc./Maxim Integrated MAX6322HPUK46C
- Part No.:
- MAX6322HPUK46C
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6322HPUK46C.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:22,431
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Product details
Overview
MAX6322HPUK46C 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 4.63V reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. Designed for brownout detection and system recovery in battery-powered embedded controllers.
For engineers reviewing the MAX6322HPUK46C datasheet, MAX6322HPUK46C pinout, MAX6322HPUK46C application, or MAX6322HPUK46C equivalent, key selection criteria include its open-drain RESET output compatibility with multi-supply systems, guaranteed operation down to VCC = 1V, AEC-Q100 qualification, and absence of watchdog functionality in this variant (no WDI pin).
Technical Context
The MAX6322HPUK46C implements a voltage-monitoring architecture that asserts RESET when VCC falls below 4.63V ±2.5% across –40°C to +125°C, holding it active for ≥140ms after VCC recovers. Its open-drain RESET output requires an external pullup resistor and supports interfacing with supply rails up to 6V - enabling use in mixed-voltage systems.
This variant lacks watchdog input (WDI) and bidirectional reset capability. It includes a manual reset (MR) input with internal 52kΩ pullup, 100ns glitch rejection, and MR-to-RESET propagation delay of 230ns at VCC = 5V. Supply current is 3–12µA over 2.5V–5.5V VCC range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% (–40°C to +125°C); ensures reliable brownout detection for 5V nominal systems |
| Reset Timeout Period | 140ms minimum; guarantees sufficient hold time for processor initialization after power recovery |
| Output Type | Active-low open-drain; enables level-shifting and wired-OR reset bus configurations with external pullup |
| Supply Voltage Range | 1.0V to 5.5V; valid reset assertion guaranteed down to VCC = 1V for low-power brownout coverage |
| Supply Current | 3µA (typ) at 3.6V; ultra-low quiescent current suitable for battery-backed applications |
| Operating Temperature | –40°C to +125°C; qualified for automotive and industrial environments |
| Package | 5-pin SOT23; 2.9mm × 1.6mm footprint saves board space in compact designs |
Pinout & Package
MAX6322HPUK46C is housed in a 5-pin SOT23 package (JEDEC MO-178AA), with 0.95mm pitch and exposed pad not present. Pin 1 is marked by a dot or beveled edge.
| 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; debounced by 100ns glitch filter |
| 4 | NC | No connect; unused pin - must remain unconnected per datasheet |
| 5 | VCC | Power supply input; monitors voltage for reset assertion; absolute max = +6V |
Key Features
| Feature | Design Value |
|---|---|
| Open-drain RESET output | Supports multi-rail reset buses and level translation without additional logic or level shifters |
| Factory-trimmed 4.63V threshold | Eliminates external resistor divider; reduces BOM count and improves long-term voltage accuracy |
| AEC-Q100 qualified | Validated for automotive-grade reliability including temperature cycling, HTOL, and ESD performance |
| No external components required | Integrates precision voltage reference, timing capacitor, and MR pullup - simplifies layout and validation |
| Guaranteed operation to VCC = 1V | Ensures deterministic reset behavior during deep brownout or battery discharge conditions |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Power monitoring in a CAN-connected programmable logic controller operating from 5V rail with intermittent load transients. IC Role / Device Role / Timing Role: Supervises VCC and provides clean, glitch-immune reset signal to ARM Cortex-M4 MCU during brownout events. Use Value: Prevents firmware corruption by asserting RESET for ≥140ms after VCC recovers above 4.63V, meeting IEC 61000-4-11 immunity requirements. |
Use Scenario: Reset management in a 12V-powered body control unit with local 5V LDO supplying microcontroller and sensors. IC Role / Device Role / Timing Role: Monitors 5V domain and delivers open-drain RESET compatible with both 3.3V and 5V logic families on shared reset bus. Use Value: AEC-Q100 qualification and –40°C to +125°C operation ensure robustness across vehicle life cycle and environmental stress. |
| Portable Medical Monitor | Smart Energy Meter |
|
Use Scenario: Battery-operated handheld vital signs monitor using Li-ion cell with buck-boost regulator feeding 3.3V/5V rails. IC Role / Device Role / Timing Role: Detects undervoltage on main 5V supply and forces controlled restart before data loss occurs. Use Value: Ultra-low 3µA supply current extends battery runtime; 4.63V threshold aligns with end-of-discharge voltage of regulated 5V rail. |
Use Scenario: Tamper-resistant electricity meter with dual-supply design (mains-derived 5V + backup supercapacitor 3.3V). IC Role / Device Role / Timing Role: Provides fail-safe reset coordination between primary and backup supplies using open-drain wired-OR topology. Use Value: RESET pin tolerates up to 6V pullup, allowing direct interface to 5V system rail while MCU operates at 3.3V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6321HPUK46CY-T | Includes watchdog input (WDI); same 4.63V threshold, 140ms reset timeout, open-drain output | Required where software execution monitoring is needed alongside power supervision | Select MAX6321HPUK46CY-T if watchdog functionality is mandatory; otherwise MAX6322HPUK46C offers lower cost and simpler routing |
| TLV803EB29DBVR | 3.08V reset threshold, 200ms timeout, push-pull output, no MR or watchdog; SOT23-5 | Suitable for 3.3V systems needing basic reset only - lacks manual reset and multi-supply flexibility | Choose TLV803EB29DBVR for cost-sensitive 3.3V applications without MR or open-drain requirement; not drop-in due to different threshold and output type |
Compared with MAX6321HPUK46CY-T, MAX6322HPUK46C removes WDI to reduce complexity and cost while retaining identical reset behavior; compared with TLV803EB29DBVR, it offers higher threshold, manual reset, and open-drain flexibility at the expense of higher unit price and larger footprint.
Availability
MAX6322HPUK46C is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical monitors, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6322HPUK46C 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 ICs for demanding industrial, automotive, and computing applications.
The MAX6316–MAX6322 family delivers integrated power-supply monitoring, manual reset, and watchdog functions in miniature SOT23 packages - targeting space-constrained, reliability-critical embedded systems.
FAQ
What is the reset threshold voltage of MAX6322HPUK46C and how accurate is it over temperature?
The MAX6322HPUK46C has a factory-trimmed nominal reset threshold of 4.63V, specified as ±2.5% over the full –40°C to +125°C operating range. At +25°C, tolerance tightens to ±1.5%. This accuracy eliminates need for external calibration and ensures consistent brownout detection across automotive and industrial thermal profiles.
Does MAX6322HPUK46C include a watchdog timer function?
No, MAX6322HPUK46C does not include a watchdog timer. Its pinout omits the WDI (watchdog input) terminal, and the device is explicitly listed in the Selector Guide as having no watchdog capability. For watchdog-enabled variants, consider MAX6321HPUK46CY-T, which shares identical reset specifications but adds WDI functionality.
How should the RESET pin of MAX6322HPUK46C be connected in a system with multiple voltage domains?
The RESET pin of MAX6322HPUK46C is open-drain and rated for up to 6V, allowing connection of an external pullup resistor to any compatible supply rail - including 3.3V, 5V, or auxiliary 12V domains. This enables single-point reset coordination across heterogeneous logic families without level translators, provided sink current remains within 3.2mA limit.
What is the purpose of the NC pin (Pin 4) on MAX6322HPUK46C?
Pin 4 on MAX6322HPUK46C is designated No Connect (NC) and must remain unconnected in all applications. It is not internally bonded and serves no electrical function. Routing traces or placing vias on this pad violates Maxim's layout guidelines and may compromise thermal performance or ESD robustness.
Is MAX6322HPUK46C qualified for automotive applications?
Yes, MAX6322HPUK46C is AEC-Q100 qualified and rated for operation from –40°C to +125°C. Its qualification covers temperature cycling, high-temperature operating life (HTOL), and ESD robustness per automotive standards - making it suitable for under-hood and cabin body control modules where reliability under thermal stress is critical.
MAX6322HPUK46C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/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
MAX6322HPUK46C FAQ
1.How can I place an order for MAX6322HPUK46C through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6322HPUK46C 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 MAX6322HPUK46C reliable?
The price and inventory of MAX6322HPUK46C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6322HPUK46C is usually 5 days.
3.What payment methods are accepted for MAX6322HPUK46C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6322HPUK46C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6322HPUK46C?
MAX6322HPUK46C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6322HPUK46C 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 MAX6322HPUK46C?
For technical support, including MAX6322HPUK46C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6322HPUK46C requirements.
6.How does Aetrix verify that MAX6322HPUK46C is sourced from the original manufacturer or authorized distributors?
All MAX6322HPUK46C 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 MAX6322HPUK46C meets industry standards.
7.What is the process for return or replacement of MAX6322HPUK46C?
All MAX6322HPUK46C units undergo pre-shipment inspection (PSI). If there is an issue with MAX6322HPUK46C, 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 MAX6322HPUK46C part is unused and in its original packaging.
Return procedure for MAX6322HPUK46C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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