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Analog Devices Inc./Maxim Integrated MAX6352TWUK-T
- Part No.:
- MAX6352TWUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6352TWUK-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:16,411
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Product details
Overview
MAX6352TWUK-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 3.08V (VCC1) and 1.67V (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 MAX6352TWUK-T datasheet, MAX6352TWUK-T pinout, MAX6352TWUK-T application, or MAX6352TWUK-T equivalent, this page delivers verified threshold voltages, reset timing behavior, manual-reset debounce characteristics, open-drain drive capability, and temperature-stable operation across –40°C to +85°C.
Technical Context
The MAX6352TWUK-T monitors two independent supply rails (VCC1 and VCC2) with fixed, factory-trimmed thresholds - 3.08V ±0.08V for VCC1 and 1.67V ±0.05V for VCC2 - and asserts its open-drain RST output low when either supply falls below its respective trip point. Reset remains valid as long as at least one supply exceeds +1.0V, enabling robust brownout protection during asymmetric rail collapse.
It integrates a debounced TTL/CMOS-compatible manual-reset input (MR), supports 100ms minimum power-on-reset pulse width, and provides immunity to short VCC transients (<200ns at 0.5V overdrive). Unlike watchdog-equipped variants (e.g., MAX6359), MAX6352TWUK-T excludes watchdog timer functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.08V ±0.08V at +25°C; guarantees reset assertion when primary supply drops below nominal 3.3V rail by ~2.4%, stable over –40°C to +85°C |
| VCC2 Threshold | 1.67V ±0.05V at +25°C; enables monitoring of secondary low-voltage rails such as 1.8V or 1.5V logic domains |
| Supply Current | 20µA typical at VCC1=5.5V/VCC2=3.6V; ensures minimal loading on battery-backed or energy-constrained supplies |
| Reset Pulse Width | 100ms minimum; satisfies μP reset hold-time requirements for reliable initialization across industrial temperature range |
| RESET Validity Range | Guaranteed functional reset output while VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; supports graceful shutdown during deep brownout |
| MR Input Compatibility | TTL/CMOS-debounced; accepts standard logic-level manual reset signals without external filtering |
| Operating Temperature | –40°C to +85°C extended range; qualified for industrial and automotive under-hood auxiliary electronics |
Pinout & Package
MAX6352TWUK-T is housed in a 5-pin SOT23 package (package code U5-1), footprint-compatible with industry-standard 5-lead SOT-23 land pattern (land pattern no. 90-0174), RoHS-compliant, and rated for 571mW maximum power dissipation at +70°C.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output referenced to VCC1; requires external pullup for logic-high state; sinks ≥1.2mA at VCC1 ≥2.7V |
| 2 | GND | Analog/digital ground reference; common return path for both monitored supplies and internal comparators |
| 3 | MR | Debounced manual-reset input; pulling low forces RST assertion; internally pulled up ~63.5kΩ to VCC1 when unconnected |
| 4 | VCC2 | Secondary supply input and monitor rail; powers internal circuitry when VCC2 > VCC1; threshold = 1.67V |
| 5 | VCC1 | Primary supply input and monitor rail; powers internal circuitry when VCC1 > VCC2; threshold = 3.08V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks 3.08V and 1.67V rails with ±0.08V/±0.05V accuracy; eliminates need for discrete resistor-divider supervisors |
| Open-drain RST with wide VCC validity | Drives low while VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; compatible with mixed-voltage µP reset inputs and level-shifting interfaces |
| Ultra-low quiescent current | 20µA typical supply draw enables use in always-on battery-powered systems without compromising runtime |
| 100ms min POR pulse width | Ensures sufficient reset hold time for modern microcontrollers requiring ≥65ms minimum assertion per ARM/Intel specs |
| Transient-immune comparator design | Rejects VCC glitches <200ns duration at 0.5V overdrive; prevents spurious resets in noisy power environments |
Applications
| Industrial PLC Power Sequencing | Medical Sensor Node Supervision |
|---|---|
Use Scenario: Monitoring dual-rail power (3.3V I/O + 1.8V core) in programmable logic controllers during cold start and brownout events. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting open-drain RST to hold CPU in reset until both rails stabilize above 3.08V and 1.67V respectively. Use Value: Prevents firmware execution on marginal supplies; 100ms reset pulse ensures deterministic boot sequence across –40°C to +85°C operating range. |
Use Scenario: Ensuring safe startup and fault recovery in portable ECG sensor modules powered by Li-ion battery and LDO-regulated rails. IC Role / Device Role / Timing Role: Detecting collapse of 3.08V analog front-end supply or 1.67V digital subsystem supply, triggering system-wide reset via open-drain RST. Use Value: 20µA quiescent current extends battery life; guaranteed reset validity down to 1.0V allows controlled shutdown before deep discharge damage. |
| Automotive Body Control Module | Industrial IoT Edge Gateway |
Use Scenario: Supervising 3.3V CAN transceiver supply and 1.67V microcontroller core voltage in under-hood body control units exposed to load dump transients. IC Role / Device Role / Timing Role: Providing glitch-filtered, temperature-stable reset assertion using MR input for service-mode entry and VCC monitoring for supply fault detection. Use Value: Immunity to sub-200ns VCC transients avoids false resets during alternator switching; extended temperature rating supports AEC-Q100-relevant operation. |
Use Scenario: Managing power integrity in fanless edge gateways with dual 3.3V (SoC I/O) and 1.67V (memory interface) rails subject to thermal cycling. IC Role / Device Role / Timing Role: Generating synchronized reset signal to SoC and peripheral FPGAs upon any rail undervoltage event, with manual override via MR. Use Value: Single-chip dual-monitoring reduces BOM count vs. discrete solutions; SOT23-5 footprint enables compact layout in space-constrained gateway PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353TWUK-T | Replaces open-drain RST with push-pull RST referenced to VCC1; same thresholds and pinout | Eliminates need for external pullup resistor; not compatible with wired-OR reset buses | Select when driving single-load µP reset pin directly without bus sharing |
| TPS3808G30DBVR | Single-supply supervisor (3.0V threshold only); no VCC2 monitoring; 1.6ms reset delay vs. 100ms min pulse width | Cannot replace dual-rail monitoring function; requires separate IC for second rail | Choose only if system uses single regulated rail and prioritizes ultra-low 1.5µA IQ over dual monitoring |
Compared with MAX6352TWUK-T, MAX6353TWUK-T offers simplified interface via push-pull output but loses bus-sharing flexibility, while TPS3808G30DBVR reduces cost and current draw at the expense of losing independent VCC2 supervision - making MAX6352TWUK-T uniquely suited for compact dual-rail integrity assurance.
Availability
MAX6352TWUK-T is available at Aetrix Electronics and suitable for industrial PLC power sequencing, medical sensor node supervision, automotive body control modules, and industrial IoT edge gateways requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6352TWUK-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 ICs for power, sensing, and interface applications, with emphasis on reliability and integration for demanding environments.
The MAX6351–MAX6360 family delivers precision dual/triple-voltage supervision with factory-trimmed thresholds, targeting multirail embedded systems where board space, power budget, and supply robustness are critical constraints.
FAQ
What is the exact VCC1 and VCC2 threshold voltage for MAX6352TWUK-T?
The MAX6352TWUK-T has a factory-set VCC1 threshold of 3.08V ±0.08V (at +25°C) and VCC2 threshold of 1.67V ±0.05V (at +25°C), with guaranteed performance over –40°C to +85°C. These values are confirmed in the Voltage Threshold Levels table and Electrical Characteristics section of the official MAX6351–MAX6360 datasheet revision 7.
Does MAX6352TWUK-T include a watchdog timer function?
No, MAX6352TWUK-T does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants. The MAX6352TWUK-T provides only dual-voltage monitoring, manual reset input, and open-drain reset output - as confirmed by the Selector Guide and Pin Configurations table in the datasheet.
What is the reset output type and drive capability of MAX6352TWUK-T?
MAX6352TWUK-T features an active-low open-drain RST output referenced to VCC1. It sinks ≥1.2mA when VCC1 ≥ 2.7V and VOL ≤ 0.3V, requiring an external pullup resistor. This configuration supports wired-OR reset buses and mixed-voltage interfacing - distinct from push-pull variants like MAX6353TWUK-T.
Can MAX6352TWUK-T operate with supply voltages below 1.8V?
Yes, MAX6352TWUK-T guarantees functional reset output as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, and operates with VCC1/VCC2 ranging from +1.2V to +5.5V over –40°C to +85°C. Its 1.67V VCC2 threshold makes it suitable for monitoring 1.8V or 1.5V rails, with full specification compliance down to 1.2V supply.
Is MAX6352TWUK-T pin-compatible with other devices in the MAX6351–MAX6360 family?
MAX6352TWUK-T shares the same 5-pin SOT23 package and pinout (RST, GND, MR, VCC2, VCC1) with MAX6353TWUK-T and MAX6354TWUK-T, but differs functionally: MAX6353 outputs push-pull RST referenced to VCC1, while MAX6354 outputs push-pull RST referenced to VCC2. No pin-compatible drop-in replacement exists for the open-drain RST function within the 5-pin variants.
MAX6352TWUK-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:
- 1.67V, 3.08V
- 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
MAX6352TWUK-T FAQ
1.How can I place an order for MAX6352TWUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6352TWUK-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 MAX6352TWUK-T reliable?
The price and inventory of MAX6352TWUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6352TWUK-T is usually 5 days.
3.What payment methods are accepted for MAX6352TWUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6352TWUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6352TWUK-T?
MAX6352TWUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6352TWUK-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 MAX6352TWUK-T?
For technical support, including MAX6352TWUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6352TWUK-T requirements.
6.How does Aetrix verify that MAX6352TWUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6352TWUK-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 MAX6352TWUK-T meets industry standards.
7.What is the process for return or replacement of MAX6352TWUK-T?
All MAX6352TWUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6352TWUK-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 MAX6352TWUK-T part is unused and in its original packaging.
Return procedure for MAX6352TWUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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