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Analog Devices Inc./Maxim Integrated MAX6352LTUK
- Part No.:
- MAX6352LTUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6352LTUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:805
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Product details
Overview
MAX6352LTUK 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 4.63V (VCC1) and 3.08V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - used for reliable power-on reset and undervoltage detection in multivoltage embedded systems.
For engineers reviewing the MAX6352LTUK datasheet, MAX6352LTUK pinout, MAX6352LTUK application, or MAX6352LTUK equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in portable equipment and controllers, and two validated alternative parts with documented functional differences.
Technical Context
The MAX6352LTUK monitors two independent supply rails (VCC1 and VCC2) and asserts its open-drain RST output low when either drops below its respective threshold (4.63V/3.08V). It includes a debounced TTL/CMOS-compatible manual-reset input (MR) that forces reset on pull-low and holds reset for timeout after release.
No watchdog timer or third-voltage monitor is present - confirmed by device family mapping (MAX6352 is excluded from MAX6358–MAX6360 watchdog group and MAX6355–MAX6357 RSTIN group). Reset timeout is fixed at 100–280ms, and output remains valid as long as either supply exceeds +1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.09V (25°C), 4.50V to 4.75V (-40°C to +85°C) - sets precise power-fail detection point for primary supply |
| VCC2 Threshold | 3.08V ±0.05V (25°C), 3.00V to 3.15V (-40°C to +85°C) - enables accurate monitoring of secondary 3.3V rail |
| Supply Current | 20µA typical (VCC1=5.5V, VCC2=3.6V) - supports ultra-low-power battery-backed operation |
| Reset Timeout | 100ms minimum pulse width - ensures sufficient duration for µP initialization sequences |
| RESET Validity Range | Valid down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - guarantees reset assertion during brownout conditions |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Package | 5-pin SOT23 - surface-mount footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6352LTUK is housed in a 5-pin SOT23 package (package code U5-1), with 1.6mm × 2.8mm body size, 0.95mm height, and 0.95mm pitch. 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 ≥1.2mA at VCC1 ≥ 2.7V; asserted when VCC1 < 4.63V or VCC2 < 3.08V |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external pullup networks |
| 3 - MR | Debounced manual-reset input | Pull low to force reset; internally pulled up (~63.5kΩ); glitch rejection ≥100ns |
| 4 - VCC2 | Secondary supply input & monitor | Monitors 3.08V rail; powers device if > VCC1; must stay ≤ +6V and ≥ -0.3V |
| 5 - VCC1 | Primary supply input & monitor | Monitors 4.63V rail; powers device if > VCC2; supports operation down to +1.2V over full temp range |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks 4.63V and 3.08V rails with ±2% threshold accuracy over temperature |
| Open-drain RST with wide voltage tolerance | RST pin tolerates up to VCC1 + 0.3V, enabling safe interfacing with higher-voltage logic domains |
| Low-quiescent-current operation | 20µA typical ICC ensures minimal impact on battery life in portable systems |
| Guaranteed reset validity at low VCC | RESET remains functional even as VCC1 or VCC2 decays to 1.0V - critical for brownout recovery |
| Integrated MR debounce | Hardware-filtered manual-reset input eliminates need for external RC network or firmware debouncing |
Applications
| Portable/Battery-Powered Equipment | Industrial Controllers |
|---|---|
|
Use Scenario: Power management in handheld test instruments with dual 4.5V Li-ion and 3.3V LDO rails. IC Role / Device Role / Timing Role: Supervisory IC asserting open-drain reset to ARM Cortex-M MCU during VBAT sag or LDO dropout. Use Value: Prevents MCU lockup by guaranteeing reset pulse ≥100ms while maintaining validity down to 1.0V on either rail. |
Use Scenario: Reliable boot sequencing in programmable logic controllers with separate 5V I/O and 3.3V core supplies. IC Role / Device Role / Timing Role: Dual-threshold supervisor ensuring both rails stabilize before releasing reset to FPGA configuration logic. Use Value: Eliminates need for discrete comparators and timing RC networks - reduces BOM count and layout area. |
| Computers (Embedded) | Intelligent Instruments |
|
Use Scenario: Reset coordination in fanless edge-computing modules where 5V DC-DC and 3.3V regulator outputs must be validated pre-boot. IC Role / Device Role / Timing Role: Voltage supervisor providing single open-drain RST signal tied to multiple downstream devices via shared pullup. Use Value: Open-drain output allows wired-OR reset bus implementation across heterogeneous voltage domains. |
Use Scenario: Power integrity assurance in digital multimeters with segmented LCD, microcontroller, and analog front-end powered from separate rails. IC Role / Device Role / Timing Role: Fault detector triggering hard reset when main 4.63V supply or auxiliary 3.08V reference rail falls out of spec. Use Value: Factory-trimmed thresholds eliminate calibration overhead; 20µA quiescent current extends battery runtime between calibrations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353LTUK | Push-pull RST output referenced to VCC1 (vs. open-drain in MAX6352LTUK); identical thresholds and pinout | Eliminates need for external pullup resistor but requires VCC1-referenced reset domain | Select MAX6353LTUK only if system reset logic is strictly VCC1-synchronous and no wired-OR bus is needed |
| TPS3808G33DBVR | Single-supply 3.3V supervisor (no VCC2 monitor); 3.08V threshold, 200ms reset timeout, 1.6µA IQ | Lacks dual-rail monitoring - suitable only when only one rail requires supervision | Choose TPS3808G33DBVR for cost-sensitive single-rail designs where 200ms timeout and ultra-low IQ outweigh dual-monitoring need |
Compared with MAX6352LTUK, MAX6353LTUK offers push-pull drive for simpler interface but loses wired-OR capability, while TPS3808G33DBVR trades dual monitoring for lower power and cost - making each viable only in narrowly defined system architectures.
Availability
MAX6352LTUK is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial controllers, and embedded computers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6352LTUK 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, computing, and communications applications, with emphasis on reliability, low power, and integration.
The MAX6351–MAX6360 family was engineered specifically for multivoltage system supervision - delivering factory-trimmed dual-threshold detection, minimal external components, and guaranteed operation across extended temperature ranges.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 in MAX6352LTUK?
The MAX6352LTUK has a factory-set VCC1 threshold of 4.63V (±0.09V at +25°C, 4.50V to 4.75V over -40°C to +85°C) and VCC2 threshold of 3.08V (±0.05V at +25°C, 3.00V to 3.15V over temperature). These values are confirmed in the Voltage-Threshold Levels table and Electrical Characteristics section of the official datasheet.
Does MAX6352LTUK include a watchdog timer function?
No, MAX6352LTUK does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants per the Selector Guide and Pin Description tables. MAX6352LTUK provides only dual-voltage monitoring and manual reset, with no WDI pin or associated timeout circuitry.
What is the output type and drive capability of the RST pin on MAX6352LTUK?
The RST pin on MAX6352LTUK is an active-low open-drain output. It can sink at least 1.2mA when VCC1 ≥ 2.7V (VOL ≤ 0.3V), and remains valid as long as either VCC1 or VCC2 stays ≥ 1.0V. An external pullup resistor is required for proper logic-level translation.
Can MAX6352LTUK monitor a third voltage rail?
No, MAX6352LTUK cannot monitor a third voltage. The RSTIN input for external voltage monitoring is only present on MAX6355/MAX6356/MAX6357 variants. MAX6352LTUK is strictly a dual-supply supervisor with dedicated VCC1 and VCC2 inputs and no provision for additional voltage sensing.
What package and pin count does MAX6352LTUK use, and are there alternate packaging options?
MAX6352LTUK uses a 5-pin SOT23 package (U5-1 outline). Lead-free versions are available by replacing "-T" with "+T" in the order code (e.g., MAX6352LTUK+T). Tape-and-reel packaging is standard, with a 2500-piece minimum order quantity.
MAX6352LTUK 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:
- 3.08V, 4.63V
- 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
MAX6352LTUK FAQ
1.How can I place an order for MAX6352LTUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6352LTUK 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 MAX6352LTUK reliable?
The price and inventory of MAX6352LTUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6352LTUK is usually 5 days.
3.What payment methods are accepted for MAX6352LTUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6352LTUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6352LTUK?
MAX6352LTUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6352LTUK 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 MAX6352LTUK?
For technical support, including MAX6352LTUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6352LTUK requirements.
6.How does Aetrix verify that MAX6352LTUK is sourced from the original manufacturer or authorized distributors?
All MAX6352LTUK 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 MAX6352LTUK meets industry standards.
7.What is the process for return or replacement of MAX6352LTUK?
All MAX6352LTUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6352LTUK, 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 MAX6352LTUK part is unused and in its original packaging.
Return procedure for MAX6352LTUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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