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Analog Devices Inc./Maxim Integrated MAX6352MSUK-T
- Part No.:
- MAX6352MSUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6352MSUK-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,264
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Product details
Overview
MAX6352MSUK-T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 5-pin SOT23 package, featuring active-low open-drain reset output referenced to VCC1, precision factory-set thresholds of 4.38V (VCC1) and 2.93V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V. It is used in multivoltage embedded systems requiring reliable power-on reset and manual reset assertion.
For engineers reviewing the MAX6352MSUK-T datasheet, MAX6352MSUK-T pinout, MAX6352MSUK-T application, or MAX6352MSUK-T equivalent, this page delivers verified functional identity, exact threshold values, open-drain output behavior, temperature-range compliance (-40°C to +85°C), and real-world substitution guidance - all confirmed against Maxim's official documentation.
Technical Context
The MAX6352MSUK-T monitors two independent supply rails (VCC1 and VCC2) and asserts its single open-drain RST output when either falls below its respective factory-trimmed threshold (4.38V and 2.93V). Its reset state remains valid as long as at least one supply exceeds +1.0V, enabling robust operation during brownout conditions.
No watchdog timer or third-voltage monitor is present - unlike MAX6358/MAX6359/MAX6360 or MAX6355/MAX6356/MAX6357 variants. The device implements debounced TTL/CMOS-compatible manual-reset input (MR) with 1µs minimum pulse width and 100ns glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.38V ±0.08V at +25°C; guarantees reset assertion when primary supply drops below nominal system rail (e.g., +4.5V logic) |
| VCC2 Threshold | 2.93V ±0.05V at +25°C; enables monitoring of secondary rail such as +3.3V I/O or +3.0V analog subsystem |
| Supply Current | 20µA typical; supports ultra-low-power battery-backed or energy-constrained applications |
| Reset Timeout Period | 100–280ms; ensures sufficient hold time for microprocessor initialization after power-up or fault recovery |
| Operating Temperature | -40°C to +85°C; qualified for industrial-grade embedded control and instrumentation environments |
| RESET Validity Range | Valid down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; maintains deterministic reset state during deep undervoltage events |
| MR Input Compatibility | TTL/CMOS-debounced; accepts standard logic-level manual reset signals without external filtering |
Pinout & Package
MAX6352MSUK-T is housed in a 5-pin SOT23 package (package code U5-1), with exposed pad not electrically connected. Pin 1 is RST (open-drain), Pin 2 is GND, Pin 3 is MR, Pin 4 is VCC2, and Pin 5 is VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low open-drain reset output | Requires external pullup; sinks up to 1.2mA at VCC1 ≥ 2.7V; compatible with mixed-voltage µP reset inputs |
| 2 - GND | Ground reference | Common return for both VCC1 and VCC2 supplies; must be low-impedance for noise immunity |
| 3 - MR | Manual-reset input | Pull low to force reset; internally debounced; valid over full temperature range; no external RC needed |
| 4 - VCC2 | Secondary supply input & monitor | Monitors second rail (2.93V threshold); powers internal circuitry when VCC2 > VCC1; max rating +6V |
| 5 - VCC1 | Primary supply input & monitor | Monitors main rail (4.38V threshold); powers internal circuitry when VCC1 > VCC2; max rating +6V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks two rails (e.g., +4.5V core and +3.3V I/O) with separate precision thresholds - eliminates need for discrete comparators and resistive dividers |
| Open-drain RST output | Enables wired-OR reset bus configuration across multiple supervisors or compatibility with µPs requiring external pullup and level translation |
| Guaranteed operation down to 1.0V supply | Ensures deterministic reset assertion even during severe brownout - critical for fail-safe shutdown in industrial controllers |
| 20µA ultra-low quiescent current | Extends battery life in portable equipment and enables always-on supervision in low-power sensor nodes |
| 100ms minimum power-on reset pulse | Meets or exceeds µP reset timing requirements for reliable boot sequence initiation without external timing components |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Supervises dual-rail power (5V analog front-end and 3.3V digital processor) in a battery-powered ECG unit with cold-start capability. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting open-drain RST to coordinate safe boot and brownout recovery across mixed-voltage subsystems. Use Value: Prevents corrupted firmware execution by guaranteeing 100ms+ reset pulse and maintaining valid RST state down to 1.0V on either rail during battery depletion. | Use Scenario: Ensures deterministic reset during hot-swap of rechargeable Li-ion packs in handheld diagnostic devices. IC Role / Device Role / Timing Role: Monitors both pack voltage (VCC2 = 2.93V threshold) and system regulator output (VCC1 = 4.38V threshold) to detect simultaneous undervoltage faults. Use Value: Eliminates need for external voltage dividers or discrete reset ICs - reduces BOM count while meeting IEC 62304 safety-critical reset timing requirements. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Provides fail-safe reset for MCU and CAN transceiver powered from separate 5V and 3.3V rails in under-hood electronics. IC Role / Device Role / Timing Role: Dual-supply supervisor with industrial temperature range (-40°C to +85°C) ensuring reset integrity during thermal cycling and load dump transients. Use Value: Open-drain RST output interfaces directly to automotive MCU reset pins requiring external pullup; 20µA current minimizes parasitic drain on standby battery. | Use Scenario: Monitors isolated DC-DC outputs powering metrology ADC and communication SoC in utility-grade meters with long-term field deployment. IC Role / Device Role / Timing Role: Precision dual-threshold supervisor validating stable 4.38V (digital core) and 2.93V (analog sensing) rails before enabling meter firmware execution. Use Value: Factory-trimmed thresholds eliminate calibration drift over 10+ year service life; guaranteed -40°C to +85°C operation ensures reliability in outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353MSUK-T | Same thresholds (4.38V/2.93V), but push-pull RST output referenced to VCC1 instead of open-drain | Requires no external pullup; incompatible with wired-OR reset buses or level-shifted µP inputs | Select when direct drive into µP reset pin is preferred and shared reset bus is not required |
| TPS3808G33DBVR | Single-supply (3.3V only), fixed 3.08V threshold, 1.6µA quiescent current, no VCC2 monitoring | Only monitors one rail; lacks dual-threshold capability and MR debounce integration | Select only for single-rail systems where ultra-low current dominates over dual-monitoring functionality |
Compared with MAX6352MSUK-T, MAX6353MSUK-T offers simpler interface but loses open-drain flexibility, while TPS3808G33DBVR reduces current draw significantly but abandons dual-supply supervision entirely - making MAX6352MSUK-T the only choice for validated, precision dual-threshold reset with industrial temperature support and MR integration.
Availability
MAX6352MSUK-T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6352MSUK-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 industrial, communications, computing, and consumer applications.
The MAX6351–MAX6360 product line delivers precision dual- and triple-voltage microprocessor supervisors optimized for reliability-critical embedded systems where simultaneous multi-rail monitoring and deterministic reset behavior are mandatory.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6352MSUK-T?
The MAX6352MSUK-T has factory-trimmed reset thresholds of 4.38V for VCC1 and 2.93V for VCC2, each with ±0.08V tolerance at +25°C and ±0.13V over the full -40°C to +85°C operating range. These values are confirmed in Maxim's Electrical Characteristics table and correspond to the "MS" suffix in the Voltage Threshold Levels table.
Does the MAX6352MSUK-T include a watchdog timer function?
No, the MAX6352MSUK-T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6352MSUK-T provides only dual-voltage monitoring, manual reset input, and open-drain reset output - as confirmed by its pin configuration (no WDI pin) and Selector Guide.
Can the MAX6352MSUK-T operate with supply voltages below 2.0V?
Yes - the MAX6352MSUK-T guarantees valid reset output as long as either VCC1 or VCC2 remains ≥ 1.0V, and its absolute minimum operating voltage is 1.2V over the full temperature range. This allows use in brownout scenarios where one rail collapses while the other sustains minimal operation, a key feature confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections.
What is the function of Pin 1 on the MAX6352MSUK-T?
Pin 1 of the MAX6352MSUK-T is the RST terminal: an active-low, open-drain reset output referenced to VCC1. It requires an external pullup resistor to the appropriate logic rail and can sink up to 1.2mA when VCC1 ≥ 2.7V. This configuration enables flexible interfacing with µPs having different reset voltage requirements or shared reset buses.
Is the MAX6352MSUK-T RoHS-compliant and lead-free?
Yes, the MAX6352MSUK-T is RoHS-compliant and lead(Pb)-free. Per Maxim's Ordering Information, the "-T" suffix denotes lead-free packaging; leaded versions require explicit ordering with "-UT" or similar non-"+"/"-" suffixes. The device meets JEDEC standards for green packaging and is suitable for environmentally regulated industrial and medical applications.
MAX6352MSUK-T 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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.93V, 4.38V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6352MSUK-T FAQ
1.How can I place an order for MAX6352MSUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6352MSUK-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 MAX6352MSUK-T reliable?
The price and inventory of MAX6352MSUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6352MSUK-T is usually 5 days.
3.What payment methods are accepted for MAX6352MSUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6352MSUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6352MSUK-T?
MAX6352MSUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6352MSUK-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 MAX6352MSUK-T?
For technical support, including MAX6352MSUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6352MSUK-T requirements.
6.How does Aetrix verify that MAX6352MSUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6352MSUK-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 MAX6352MSUK-T meets industry standards.
7.What is the process for return or replacement of MAX6352MSUK-T?
All MAX6352MSUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6352MSUK-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 MAX6352MSUK-T part is unused and in its original packaging.
Return procedure for MAX6352MSUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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