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Analog Devices Inc./Maxim Integrated MAX6352LTUK+T
- Part No.:
- MAX6352LTUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6352LTUK+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
MAX6352LTUK+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 4.63V (VCC1) and 3.08V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V. It is used in multivoltage embedded systems to ensure reliable power-on reset and fault detection during supply brownouts.
For engineers reviewing the MAX6352LTUK+T datasheet, MAX6352LTUK+T pinout, MAX6352LTUK+T application, or MAX6352LTUK+T equivalent, key selection factors include its dual-threshold monitoring capability, open-drain RST output with 0.3V VOL at 1.2mA, 100ms minimum reset timeout, debounced manual-reset input, and operation across -40°C to +85°C.
Technical Context
The MAX6352LTUK+T 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). Its reset state remains valid as long as at least one supply exceeds +1.0V, enabling robust operation during asymmetric rail collapse.
It integrates a debounced TTL/CMOS-compatible manual-reset input (MR) with 1µs minimum pulse width and 100ns glitch rejection, and supports system-level reliability via power-supply transient immunity up to 250µs for 100mV overdrive - verified by the Maximum VCC Transient Duration vs. Reset Threshold Overdrive curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.09V (min/max over -40°C to +85°C); precise trip point for primary supply monitoring |
| VCC2 Threshold | 3.08V ±0.08V (min/max over -40°C to +85°C); accurate secondary rail supervision |
| Reset Timeout Period | 100–280ms; ensures sufficient processor initialization time after power-up or fault recovery |
| Supply Current | 20µA typical; ultra-low quiescent draw for battery-backed or energy-sensitive systems |
| RST Output Type | Active-low open-drain; allows wired-OR configuration and flexible pull-up voltage selection |
| VOL (RST Low) | 0.3V max at ISINK = 1.2mA (VCC1/VCC2 ≥ 2.7V); guarantees strong logic-low drive under load |
| Operating Temp | -40°C to +85°C; fully specified for industrial-grade embedded applications |
Pinout & Package
MAX6352LTUK+T is housed in a RoHS-compliant 5-pin SOT23 package (U5-1 outline, land pattern 90-0174), with 1.6mm × 2.9mm footprint and 0.95mm height. Pin 1 is RST (open-drain reset output), 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 | Asserted low when VCC1 < 4.63V or VCC2 < 3.08V; requires external pull-up for logic-high state |
| 2 - GND | Ground reference | Common return path for internal comparators, MR input, and RST driver |
| 3 - MR | Debounced manual-reset input | Pull low to force reset; 1µs minimum pulse width ensures noise immunity |
| 4 - VCC2 | Secondary supply input & monitor | Provides power and is monitored at 3.08V threshold; must not exceed +6V |
| 5 - VCC1 | Primary supply input & monitor | Provides power and is monitored at 4.63V threshold; powers internal circuitry when > VCC2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC1 (4.63V) and VCC2 (3.08V) with no external components required |
| Open-drain RST with guaranteed low drive | 0.3V max VOL at 1.2mA sink current enables direct interface to diverse logic families |
| Reset validity down to 1.0V supply | Ensures functional reset assertion even during deep brownout conditions on either rail |
| Debounced manual-reset input | 100ns glitch rejection and 1µs minimum pulse width prevent spurious resets from switch bounce |
| Power-supply transient immunity | Withstands negative transients up to 250µs duration for 100mV overdrive without false triggering |
Applications
| Computers | Controllers |
|---|---|
Use Scenario: Desktop motherboard with +5V and +3.3V rails requiring coordinated power-on reset and brownout detection. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting open-drain RST to CPU reset controller upon any rail failure. Use Value: Eliminates need for discrete comparators and RC timing networks, reducing BOM count and layout area. | Use Scenario: Industrial PLC mainboard with separate 5V logic and 3.3V I/O supplies subject to field-induced transients. IC Role / Device Role / Timing Role: Fault-detection IC generating clean reset pulse with 100ms minimum width to hold controller in reset until stable. Use Value: 250µs transient immunity prevents nuisance resets during EFT bursts, improving system uptime. |
| Portable/Battery-Powered Equipment | Multivoltage Systems |
Use Scenario: Handheld medical device powered by Li-ion battery with buck-boost regulators delivering 4.6V and 3.1V to analog/digital sections. IC Role / Device Role / Timing Role: Low-power (20µA) supervisor ensuring safe shutdown when either regulated rail falls below spec. Use Value: Ultra-low ICC extends battery life while maintaining guaranteed reset down to 1.0V on either rail. | Use Scenario: FPGA-based test instrument with multiple voltage domains (5V, 3.3V, 2.5V) requiring synchronized reset sequencing. IC Role / Device Role / Timing Role: Dual-threshold monitor providing single-point reset assertion when any monitored rail fails. Use Value: Simplifies reset architecture by replacing three discrete supervisors with one compact 5-pin SOT23 device. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6352MTUK+T | VCC1 threshold = 4.38V (vs. 4.63V); same VCC2 = 3.08V, package, and features | Suitable where primary supply nominal is 4.5V instead of 5V; tighter margin for 5V rail tolerance | Select when system VCC1 nominal is 4.5V and requires lower trip point than MAX6352LTUK+T |
| TPS3808G33DBVR | Single-supply (3.3V only), push-pull RST, 3% threshold accuracy (vs. MAX6352's 2%); no VCC2 monitoring | Lacks dual-rail capability; requires separate supervisor for second rail or external divider | Choose only if monitoring only one rail is sufficient and higher accuracy is prioritized over dual-voltage function |
Compared with MAX6352MTUK+T, the MAX6352LTUK+T provides a higher VCC1 trip point ideal for 5V systems, while TPS3808G33DBVR offers better threshold accuracy but sacrifices dual-supply monitoring - making MAX6352LTUK+T optimal for cost-sensitive, space-constrained multivoltage designs needing guaranteed 1V reset validity.
Availability
MAX6352LTUK+T is available at Aetrix Electronics and suitable for computers, controllers, and portable/battery-powered equipment requiring stable component supply, industrial temperature operation, and dual-rail supervision with minimal board space.
Supply support for MAX6352LTUK+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, computing, and communications markets.
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 fail-safe reset generation are essential.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6352LTUK+T?
The MAX6352LTUK+T has a factory-set VCC1 threshold of 4.63V (±0.09V over -40°C to +85°C) and a VCC2 threshold of 3.08V (±0.08V over the same temperature range). These values are precision-trimmed during production and documented in the Voltage-Threshold Levels table of the MAX6351–MAX6360 datasheet. The "LT" suffix explicitly denotes this 4.63V/3.08V combination.
Does the MAX6352LTUK+T include a watchdog timer function?
No, the MAX6352LTUK+T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the family. The MAX6352LTUK+T is a dual-voltage supervisor with open-drain reset, manual reset input, and precision thresholds - but no WDI pin or timeout circuitry.
What is the maximum supply voltage the MAX6352LTUK+T can tolerate on VCC1 and VCC2 pins?
The MAX6352LTUK+T supports VCC1 and VCC2 voltages from -0.3V to +6V absolute maximum, per the Absolute Maximum Ratings table. However, functional operation is guaranteed only between +1.2V and +5.5V for both supplies over the full -40°C to +85°C temperature range. Operation below +1.2V may occur but is not production-tested.
Can the MAX6352LTUK+T generate a valid reset signal when one supply rail drops to 0V?
No - the MAX6352LTUK+T guarantees RESET validity only while at least one supply (VCC1 or VCC2) remains ≥ +1.0V. If both rails fall below 1.0V, the internal circuitry cannot sustain correct reset state. For true 0V reset assurance, Maxim recommends external capacitor-based hold-up circuits (as shown in Figure 4 of the datasheet), though these do not work with the open-drain RST output of the MAX6352LTUK+T.
What package type and RoHS status does the MAX6352LTUK+T use?
The MAX6352LTUK+T uses a 5-pin SOT23 package (outline U5-1, land pattern 90-0174) and is RoHS-compliant. The "+T" suffix confirms lead(Pb)-free packaging, per Maxim's ordering convention where "+T" replaces "-T" to indicate RoHS compliance. The device is supplied in tape-and-reel format with a 2500-piece minimum order quantity.
MAX6352LTUK+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:
- 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+T FAQ
1.How can I place an order for MAX6352LTUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6352LTUK+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 MAX6352LTUK+T reliable?
The price and inventory of MAX6352LTUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6352LTUK+T is usually 5 days.
3.What payment methods are accepted for MAX6352LTUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6352LTUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6352LTUK+T?
MAX6352LTUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6352LTUK+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 MAX6352LTUK+T?
For technical support, including MAX6352LTUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6352LTUK+T requirements.
6.How does Aetrix verify that MAX6352LTUK+T is sourced from the original manufacturer or authorized distributors?
All MAX6352LTUK+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 MAX6352LTUK+T meets industry standards.
7.What is the process for return or replacement of MAX6352LTUK+T?
All MAX6352LTUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6352LTUK+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 MAX6352LTUK+T part is unused and in its original packaging.
Return procedure for MAX6352LTUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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