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Analog Devices Inc./Maxim Integrated MAX6352TZUK
- Part No.:
- MAX6352TZUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6352TZUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:520
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Product details
Overview
MAX6352TZUK from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with open-drain active-low reset output, monitoring VCC1 at 3.08V and VCC2 at 2.32V thresholds over -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 MAX6352TZUK datasheet, MAX6352TZUK pinout, MAX6352TZUK application, or MAX6352TZUK equivalent, key selection criteria include dual-supply threshold accuracy (±0.05V over temperature), open-drain RST output compatibility with 3.3V/2.5V logic, SOT23-5 package footprint constraints, and absence of watchdog or third-voltage monitor functions.
Technical Context
The MAX6352TZUK implements independent precision voltage comparators for two supply rails (VCC1 and VCC2), asserting reset when either drops below its factory-trimmed threshold. Its open-drain RST output requires an external pull-up and remains valid as long as at least one supply exceeds 1.0V - enabling robust brownout detection during asymmetric rail collapse.
No internal watchdog timer or adjustable reset input is present; the device relies solely on fixed-threshold monitoring and debounced TTL/CMOS-compatible MR input. Reset timeout is guaranteed at 100–280ms, with hysteresis of VTH/500 and tempco of 20ppm/°C for stable operation across industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.08V ±0.05V (factory-trimmed; ensures accurate 3.3V rail monitoring) |
| VCC2 Threshold | 2.32V ±0.03V (factory-trimmed; enables precise 2.5V or 2.3V rail supervision) |
| Supply Current | 20µA typical (enables battery-backed or low-power always-on supervision) |
| Reset Pulse Width | 100–280ms (guaranteed minimum 100ms ensures reliable µP initialization) |
| Operating Temp | -40°C to +85°C (fully specified for industrial-grade embedded applications) |
| RESET Validity | Down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V (supports deep brownout detection without auxiliary bias) |
| Output Type | Active-low open-drain (allows wired-OR configuration and level translation via external pull-up) |
Pinout & Package
MAX6352TZUK is housed in a 5-pin SOT23 package (U5-1 outline), 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 | Requires external pull-up; sinks ≥1.2mA at VCC ≥ 2.7V; compatible with 3.3V/2.5V logic families |
| 2 - GND | Ground reference | Common return for both supply monitors and MR input; must be low-impedance |
| 3 - MR | Debounced manual-reset input | Pull low to force reset; internally pulled up ~63.5kΩ; accepts TTL/CMOS levels; glitch rejection 100ns |
| 4 - VCC2 | Secondary supply input & monitor | Monitors voltage against 2.32V threshold; powers internal circuitry when > VCC1; max rating +6V |
| 5 - VCC1 | Primary supply input & monitor | Monitors voltage against 3.08V threshold; powers internal circuitry when > VCC2; max rating +6V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of 3.08V (VCC1) and 2.32V (VCC2) rails with no external components required |
| Open-drain reset output | Enables shared reset bus across multiple ICs and supports level-shifting via configurable pull-up voltage |
| Low quiescent current | 20µA typical consumption allows integration into always-on subsystems without compromising battery life |
| Guaranteed reset validity to 1.0V | Ensures deterministic reset assertion even during severe brownout conditions where supplies dip near 1V |
| Industrial temperature range | Full electrical specification over -40°C to +85°C enables deployment in harsh environments without derating |
Applications
| Industrial PLC Controller | Medical Sensor Hub |
|---|---|
|
Use Scenario: A programmable logic controller uses separate 3.3V I/O and 2.5V FPGA core supplies, requiring coordinated reset assertion on either rail failure. IC Role / Device Role / Timing Role: MAX6352TZUK monitors both rails independently and asserts a single open-drain RST signal to reset all downstream logic simultaneously. Use Value: Eliminates need for discrete comparators and logic gates, reducing BOM count and PCB area while guaranteeing sub-100ms response to VCC2 sag below 2.32V. |
Use Scenario: A portable patient monitor integrates analog front-end (2.5V) and digital processing (3.3V) sections powered from a shared Li-ion battery with dynamic load-induced voltage droop. IC Role / Device Role / Timing Role: MAX6352TZUK serves as primary brownout detector, asserting reset before ADC reference collapse or MCU lockup due to undervoltage. Use Value: 20µA quiescent current extends battery runtime; 1.0V reset validity ensures fail-safe shutdown before data corruption occurs at low battery states. |
| Automotive Body Control Module | Industrial IoT Gateway |
|
Use Scenario: A body control unit derives 3.3V microcontroller supply and 2.5V CAN transceiver supply from a common 12V automotive rail via separate LDOs. IC Role / Device Role / Timing Role: MAX6352TZUK provides rail-specific supervision with synchronized reset to prevent partial initialization during cold-crank events. Use Value: Precision thresholds (±0.05V) reject false triggers from transient noise; -40°C to +85°C rating meets AEC-Q100 ambient requirements without thermal derating. |
Use Scenario: An edge gateway combines 3.3V ARM SoC and 2.5V RF module, both sensitive to supply instability during wireless transmission bursts. IC Role / Device Role / Timing Role: MAX6352TZUK detects localized rail collapse caused by high-current RF switching and forces controlled reboot before firmware hang. Use Value: Open-drain RST output interfaces directly to SoC reset pin without level-shifter; 100ms min pulse width satisfies ARM reset timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6352SZUK | VCC1 = 2.93V, VCC2 = 2.32V - lower primary threshold enables tighter 3.0V rail margin | Better suited for systems using 2.9V nominal VCC1 with tighter tolerance budgets | Select when primary rail is 2.9V ±3% instead of 3.3V; same package and pinout |
| MAX6352TYUK | VCC1 = 3.08V, VCC2 = 2.19V - lower secondary threshold supports 2.2V logic domains | Required for designs with 2.2V analog subsystems or low-Vt FET gate drivers | Choose when secondary rail is 2.2V rather than 2.5V; identical SOT23-5 footprint |
Compared with MAX6352TZUK, MAX6352SZUK offers a 0.15V lower VCC1 trip point for improved margin on 2.9V rails, while MAX6352TYUK lowers VCC2 to 2.19V to support emerging 2.2V interface standards - both retain identical timing, current, and temperature specs.
Availability
MAX6352TZUK is available at Aetrix Electronics and suitable for industrial PLC controllers, medical sensor hubs, automotive body control modules, and industrial IoT gateways requiring stable component supply with full traceability and lifecycle management.
Supply support for MAX6352TZUK 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 dual- and triple-voltage supervision with factory-trimmed thresholds, targeting space-constrained embedded systems needing reliable, low-power power-fail detection without external components.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6352TZUK?
The MAX6352TZUK has a factory-trimmed VCC1 threshold of 3.08V (±0.05V over -40°C to +85°C) and a VCC2 threshold of 2.32V (±0.03V). These values are confirmed in the Voltage Threshold Levels table and Electrical Characteristics section of the official datasheet, with typical tempco of 20ppm/°C ensuring stability across temperature.
Does the MAX6352TZUK include a watchdog timer function?
No, the MAX6352TZUK does not include a watchdog timer. Watchdog functionality is only present in MAX6358/MAX6359/MAX6360 variants. The MAX6352TZUK is a dual-voltage supervisor with open-drain reset output, manual reset input, and no WDI pin or associated timing circuitry - confirmed by its 5-pin SOT23 pinout and functional description.
What is the output type and drive capability of the RST pin on MAX6352TZUK?
The RST pin on MAX6352TZUK is an active-low open-drain output. It can sink ≥1.2mA when VCC1 or VCC2 ≥ 2.7V, and ≥50µA down to 1.0V. An external pull-up resistor is required; typical use employs a 10kΩ resistor to 3.3V or 2.5V, enabling wired-OR reset buses and level translation - per Absolute Maximum Ratings and Electrical Characteristics tables.
Can the MAX6352TZUK operate with supply voltages below 1.2V?
The MAX6352TZUK guarantees RESET validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, but its specified operating range starts at 1.2V (per Electrical Characteristics table). Operation below 1.2V is not characterized or guaranteed - the 1.0V validity refers only to the reset output state retention during brownout, not functional operation of internal comparators.
Is the MAX6352TZUK pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6352TZUK uses the 5-pin SOT23 package and shares pinout with MAX6352xx, MAX6353xx, and MAX6354xx variants. However, it is not pin-compatible with 6-pin versions (e.g., MAX6351, MAX6355) due to missing RSTIN/WDI/RST2 pins. Pin mapping is strictly defined in the Pin Configurations section of the datasheet and verified for MAX6352-series devices only.
MAX6352TZUK 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:
- 2.32V, 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
MAX6352TZUK FAQ
1.How can I place an order for MAX6352TZUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6352TZUK 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 MAX6352TZUK reliable?
The price and inventory of MAX6352TZUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6352TZUK is usually 5 days.
3.What payment methods are accepted for MAX6352TZUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6352TZUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6352TZUK?
MAX6352TZUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6352TZUK 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 MAX6352TZUK?
For technical support, including MAX6352TZUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6352TZUK requirements.
6.How does Aetrix verify that MAX6352TZUK is sourced from the original manufacturer or authorized distributors?
All MAX6352TZUK 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 MAX6352TZUK meets industry standards.
7.What is the process for return or replacement of MAX6352TZUK?
All MAX6352TZUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6352TZUK, 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 MAX6352TZUK part is unused and in its original packaging.
Return procedure for MAX6352TZUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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