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Analog Devices Inc./Maxim Integrated MAX6352RVUK
- Part No.:
- MAX6352RVUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6352RVUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,967
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Product details
Overview
MAX6352RVUK from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with open-drain active-low reset output, monitoring VCC1 at 2.63V and VCC2 at 1.58V thresholds across -40°C to +85°C. It features 20µA supply current, 100ms minimum power-on-reset pulse width, and guaranteed RESET validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V. Used in multivoltage embedded systems requiring reliable power-fail detection and manual reset assertion.
For engineers reviewing the MAX6352RVUK datasheet, MAX6352RVUK pinout, MAX6352RVUK application, or MAX6352RVUK equivalent, this page delivers verified voltage thresholds, open-drain reset behavior, SOT23-5 package constraints, and direct alternatives for dual-supply monitoring in portable and industrial control designs.
Technical Context
The MAX6352RVUK monitors two independent supply rails (VCC1 and VCC2) and asserts its single open-drain RST output whenever either falls below its factory-set threshold-2.63V for VCC1 and 1.58V for VCC2. Its reset timeout period is guaranteed between 100ms and 280ms after both supplies exceed their thresholds.
No watchdog timer or third-voltage monitor is present; it lacks WDI and RSTIN pins and does not support triple-supply supervision. The device operates with full functionality over the extended temperature range (-40°C to +85°C) and maintains valid reset output as long as either supply remains ≥1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.63V ±0.05V at +25°C; guarantees reset assertion when primary supply drops below nominal 2.63V rail |
| VCC2 Threshold | 1.58V ±0.03V at +25°C; enables precise monitoring of secondary low-voltage rail (e.g., 1.8V or 1.5V domain) |
| Reset Timeout Period | 100–280ms; ensures sufficient hold time for processor initialization after power stabilization |
| Supply Current | 20µA typical; supports ultra-low-power battery-backed operation without compromising supervision accuracy |
| Operating Temperature | -40°C to +85°C; qualified for industrial and automotive-adjacent embedded environments |
| RESET Validity Range | Valid down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; allows functional reset assertion during deep brownout conditions |
| Reset Output Type | Active-low open-drain; requires external pull-up for logic-level compatibility with diverse µP reset inputs |
Pinout & Package
MAX6352RVUK is housed in a 5-pin SOT23 package (package code U5-1), with 1.6mm × 2.9mm footprint and 0.95mm height. Pin 1 is RST (open-drain), Pin 2 is GND, Pin 3 is MR (manual reset input), Pin 4 is VCC2, and Pin 5 is VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low open-drain reset output | Drives low to assert reset; requires external pull-up resistor to interface with µP reset pin |
| 2 - GND | Ground reference | Common return path for VCC1, VCC2, MR, and RST; must be low-impedance for noise immunity |
| 3 - MR | Debounced manual-reset input | Pull low to force reset; internally debounced to reject <100ns glitches; no external RC needed |
| 4 - VCC2 | Secondary supply input and monitor | Monitors 1.58V threshold; powers internal circuitry when VCC2 > VCC1; must remain ≤6V |
| 5 - VCC1 | Primary supply input and monitor | Monitors 2.63V threshold; powers internal circuitry when VCC1 > VCC2; must remain ≤6V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises 2.63V and 1.58V rails with separate trip points-no external resistors required |
| Open-drain RST with wide voltage tolerance | RST pin tolerates up to VCC1 + 0.3V, enabling safe interfacing with higher-voltage µP reset inputs |
| Guaranteed reset validity to 1.0V | Ensures deterministic reset assertion even during severe brownout-critical for fail-safe system recovery |
| 20µA ultra-low quiescent current | Enables integration into always-on subsystems (e.g., RTC backup, wake-on-event circuits) without battery drain penalty |
| 100ms minimum POR pulse width | Meets or exceeds µP minimum reset-hold requirements for reliable boot sequence initiation |
Applications
| Portable Power Management | Industrial Controller Supervision |
|---|---|
|
Use Scenario: Battery-powered handheld instrument with dual-rail power (2.8V analog core, 1.6V digital logic). IC Role / Device Role / Timing Role: Monitors both rails and asserts open-drain RST to halt MCU execution if either supply collapses during battery discharge. Use Value: Prevents corrupted memory writes and undefined state by guaranteeing reset assertion before VCC1 or VCC2 drops below 1.0V. |
Use Scenario: PLC I/O module using isolated 2.5V and 1.5V domains for signal conditioning and FPGA configuration. IC Role / Device Role / Timing Role: Provides synchronized reset to FPGA and microcontroller upon undervoltage on either domain. Use Value: Eliminates need for discrete comparators and timing RC networks-reduces BOM count and layout area. |
| Multivoltage Embedded Systems | Low-Power Sensor Node |
|
Use Scenario: Edge AI sensor hub with 3.3V MCU, 2.6V RF transceiver, and 1.6V sensor interface ASIC. IC Role / Device Role / Timing Role: Detects failure on 2.63V or 1.58V rails and triggers system-wide reset via shared open-drain bus. Use Value: Ensures deterministic startup sequencing without software intervention-critical for unattended remote deployments. |
Use Scenario: Coin-cell-powered environmental sensor node operating intermittently with 2.7V boost converter and 1.5V ultra-low-power MCU. IC Role / Device Role / Timing Role: Supervises boosted rail and MCU core voltage, asserting reset if either sags during high-current transmit burst. Use Value: 20µA quiescent current extends battery life while maintaining fail-safe supervision-no trade-off between power and reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6352RVUT | Same thresholds (2.63V/1.58V), but in 6-pin SOT23 with RSTIN pin unused; no functional difference in supervision capability | Requires PCB redesign due to extra pin and larger footprint; no added feature benefit for MAX6352RVUK use cases | Select only if existing layout uses 6-pin variant or future expansion to triple-voltage monitoring is planned |
| TPS3808G15DBVR | Single-supply supervisor (1.5V threshold only); no VCC2 monitoring; different reset timeout (200ms typ) and higher IQ (3.5µA vs 20µA) | Cannot replace MAX6352RVUK in dual-rail systems without adding second supervisor IC and associated routing | Consider only for cost-sensitive single-rail applications where 2.63V/1.58V dual-threshold coordination is unnecessary |
Compared with MAX6352RVUK, MAX6352RVUT offers identical supervision performance in a physically incompatible package, while TPS3808G15DBVR provides lower quiescent current but lacks dual-threshold coordination-making MAX6352RVUK uniquely suited for compact, coordinated dual-rail fail-safe monitoring.
Availability
MAX6352RVUK is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial controllers, and multivoltage embedded systems requiring stable component supply, guaranteed -40°C to +85°C operation, and dual-supply brownout protection.
Supply support for MAX6352RVUK 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 and mixed-signal ICs for industrial, communications, and computing applications.
The MAX6351–MAX6360 family delivers integrated dual- and triple-voltage supervision for multirail systems-eliminating discrete solutions while ensuring robust power-fail detection and reset generation.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6352RVUK?
The MAX6352RVUK has a factory-set VCC1 threshold of 2.63V (±0.05V at +25°C) and VCC2 threshold of 1.58V (±0.03V at +25°C). These values are guaranteed over the full -40°C to +85°C temperature range, with tempco of 20ppm/°C. Both thresholds are precision-trimmed during production and require no external calibration-ensuring consistent MAX6352RVUK behavior across batches and operating conditions.
Does the MAX6352RVUK include a watchdog timer function?
No, the MAX6352RVUK does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6352RVUK is a dedicated dual-voltage supervisor with manual reset (MR) input and open-drain RST output-no WDI pin or timeout logic is present in its 5-pin SOT23 configuration.
What is the maximum supply voltage the MAX6352RVUK can tolerate on VCC1 and VCC2 pins?
The MAX6352RVUK supports VCC1 and VCC2 voltages from 1.0V to 5.5V (minimum operating) and withstands absolute maximum ratings of -0.3V to +6V. This allows safe operation with common rails including 1.8V, 2.5V, 3.3V, and 5V supplies. The device remains fully functional across the entire 1.2V–5.5V range at -40°C to +85°C, making MAX6352RVUK compatible with modern low-voltage and legacy higher-voltage systems.
Can the MAX6352RVUK drive a standard microprocessor reset pin directly?
Yes-but only with an external pull-up resistor. The MAX6352RVUK's RST pin is open-drain, so it requires a pull-up (typically 10kΩ to VCC of the target µP) to generate a valid high-level reset release signal. Without the pull-up, RST remains floating when inactive. This design allows MAX6352RVUK to interface safely with µPs operating at different voltage levels than its own VCC1/VCC2 rails.
Is the MAX6352RVUK RoHS-compliant and lead-free?
Yes, the MAX6352RVUK is RoHS-compliant and available in lead(Pb)-free packaging. The "-T" suffix in the part number indicates tape-and-reel packaging with lead-free finish. Maxim Integrated confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC J-STD-609 moisture sensitivity level 1 (MSL-1)-ensuring MAX6352RVUK meets global environmental and assembly requirements for surface-mount manufacturing.
MAX6352RVUK 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:
- 1.58V, 2.63V
- 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
MAX6352RVUK FAQ
1.How can I place an order for MAX6352RVUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6352RVUK 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 MAX6352RVUK reliable?
The price and inventory of MAX6352RVUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6352RVUK is usually 5 days.
3.What payment methods are accepted for MAX6352RVUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6352RVUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6352RVUK?
MAX6352RVUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6352RVUK 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 MAX6352RVUK?
For technical support, including MAX6352RVUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6352RVUK requirements.
6.How does Aetrix verify that MAX6352RVUK is sourced from the original manufacturer or authorized distributors?
All MAX6352RVUK 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 MAX6352RVUK meets industry standards.
7.What is the process for return or replacement of MAX6352RVUK?
All MAX6352RVUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6352RVUK, 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 MAX6352RVUK part is unused and in its original packaging.
Return procedure for MAX6352RVUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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