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Analog Devices Inc./Maxim Integrated MAX6352SYUK+
- Part No.:
- MAX6352SYUK+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6352SYUK+.pdf
- Description:
- IC SUPERVISOR MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,832
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Product details
Overview
MAX6352SYUK+ 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 2.93V (VCC1) and 2.19V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - used for reliable power-on reset and supply monitoring in multivoltage embedded systems.
For engineers reviewing the MAX6352SYUK+ datasheet, MAX6352SYUK+ pinout, MAX6352SYUK+ application, or MAX6352SYUK+ equivalent, key selection considerations include its dual-threshold monitoring capability, open-drain RST output with 100ms min timeout, manual-reset debouncing, and operation across –40°C to +85°C industrial temperature range.
Technical Context
The MAX6352SYUK+ monitors two independent supply rails (VCC1 and VCC2) and asserts its open-drain RST output when either drops below its respective threshold (2.93V/2.19V). Reset remains valid as long as at least one supply exceeds +1.0V, enabling robust brownout detection in partial-fail scenarios.
It integrates a debounced TTL/CMOS-compatible manual-reset input (MR) and supports no external components for dual-rail supervision. Unlike watchdog-equipped variants (e.g., MAX6359), MAX6352SYUK+ lacks WDI functionality - confirmed by pinout (no WDI pin) and selector guide classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; ensures precise reset assertion for +3.0V nominal rail |
| VCC2 Threshold | 2.19V ±0.03V at +25°C; enables accurate monitoring of +2.2V or +2.5V auxiliary rail |
| Supply Current | 20µA typical; minimizes quiescent load on battery- or energy-constrained supplies |
| Reset Timeout | 100–280ms; guarantees sufficient processor initialization time after power-up |
| RESET Validity | Guaranteed while VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; supports deep brownout recovery |
| Operating Temp | –40°C to +85°C; qualified for industrial and extended-temperature embedded use |
| Package | 5-pin SOT23; surface-mount footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6352SYUK+ is housed in a 5-pin SOT23 package (package code U5-1), with 1.6mm × 2.8mm body size 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 up to 1.2mA at VCC1 ≥ 2.7V; referenced to VCC1 |
| 2 - GND | Ground reference | Common return 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 second rail (2.19V threshold); powers device if > VCC1; max 6V rating |
| 5 - VCC1 | Primary supply input & monitor | Monitors main rail (2.93V threshold); powers device if > VCC2; max 6V rating |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks VCC1 (2.93V) and VCC2 (2.19V) with separate trip points - eliminates need for two discrete supervisors |
| Open-drain RST with wide validity range | RST remains functional even when VCC1 or VCC2 drops to 1.0V - critical for graceful shutdown in brownout conditions |
| Low-quiescent-current operation | 20µA typical ICC - extends battery life in portable equipment without sacrificing supervision accuracy |
| Debounced manual-reset input | Internal filtering rejects <100ns glitches; eliminates need for external RC network on MR line |
| Industrial temperature qualification | Full electrical performance guaranteed from –40°C to +85°C - suitable for automotive under-hood and industrial control environments |
Applications
| Computers | Portable/Battery-Powered Equipment |
|---|---|
Use Scenario: Desktop motherboard with +3.3V and +2.5V core/logic rails. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting system-wide reset if either rail sags during power sequencing or transient events. Use Value: Prevents CPU lockup or memory corruption by ensuring both supplies meet minimum operating voltage before release from reset. |
Use Scenario: Handheld medical monitor powered by single-cell Li-ion with buck-boost regulator generating +3.0V and +2.2V outputs. IC Role / Device Role / Timing Role: Monitors regulated rails for undervoltage; triggers controlled shutdown before data loss or sensor error. Use Value: Enables safe low-battery cutoff using precise 2.93V/2.19V thresholds - avoids premature shutdown while preventing brownout-induced firmware faults. |
| Controllers | Multivoltage Systems |
Use Scenario: PLC I/O module with isolated +5V, +3.3V, and +2.4V domains. IC Role / Device Role / Timing Role: Supervises primary +3.3V logic rail and secondary +2.4V analog rail; asserts common reset to microcontroller and ADC. Use Value: Ensures synchronized reset across mixed-signal subsystems - eliminates timing skew between digital control and analog acquisition paths. |
Use Scenario: FPGA-based communication gateway with +1.2V core, +2.5V I/O, and +3.3V peripheral rails. IC Role / Device Role / Timing Role: Monitors +2.5V and +3.3V rails (via MAX6352SYUK+) to validate power integrity before FPGA configuration begins. Use Value: Guarantees configuration bitstream loading only after stable I/O and peripheral voltages are established - prevents configuration failure or JTAG lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353SYUK+ | Same thresholds (2.93V/2.19V), but push-pull RST referenced to VCC1 instead of open-drain | Requires no external pullup; incompatible with wired-OR reset buses or level-shifting interfaces | Select MAX6353SYUK+ only if push-pull drive strength and absence of external resistor are design priorities |
| TPS3808G33DBVR | Single-supply monitor (3.3V threshold only); no VCC2 input; 350ms reset timeout; 2.5µA IQ | Cannot monitor dual rails simultaneously; requires additional supervisor or discrete solution for second rail | Choose TPS3808G33DBVR only for cost-sensitive single-rail applications where ultra-low IQ outweighs dual-monitoring capability |
Compared with MAX6352SYUK+, MAX6353SYUK+ offers higher drive capability but forfeits bus-sharing flexibility, while TPS3808G33DBVR reduces quiescent current by 90% but eliminates dual-voltage supervision entirely - making MAX6352SYUK+ the only option meeting both dual-threshold and open-drain requirements in this form factor.
Availability
MAX6352SYUK+ is available at Aetrix Electronics and suitable for computers, controllers, and portable/battery-powered equipment requiring stable component supply, long-term industrial temperature support, and RoHS-compliant packaging.
Supply support for MAX6352SYUK+ 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, with emphasis on reliability, low power, and integration.
The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor systems requiring simultaneous, independent monitoring of two or three supply rails with minimal board space and zero external components.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6352SYUK+?
The MAX6352SYUK+ has a factory-set VCC1 threshold of 2.93V (±0.05V at +25°C) and VCC2 threshold of 2.19V (±0.03V at +25°C), as defined by the "SY" suffix per the Voltage Threshold Levels table. These values are precision-trimmed and guaranteed over –40°C to +85°C, with tempco of 20ppm/°C. The MAX6352SYUK+ asserts reset whenever either supply falls below its respective threshold.
Does the MAX6352SYUK+ include a watchdog timer function?
No, the MAX6352SYUK+ does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants, which feature WDI pins and dual-mode timeout architecture. The MAX6352SYUK+ pinout (5-pin SOT23) contains only RST, GND, MR, VCC2, and VCC1 - confirming absence of WDI. Its function is strictly dual-voltage monitoring and reset generation.
What is the output type and drive capability of the RST pin on the MAX6352SYUK+?
The RST pin on the MAX6352SYUK+ is an active-low open-drain output referenced to VCC1. It sinks up to 1.2mA when VCC1 ≥ 2.7V (VOL ≤ 0.3V), and up to 3.2mA when VCC1 ≥ 4.5V (VOL ≤ 0.4V). An external pullup resistor is required; typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
Can the MAX6352SYUK+ operate with supply voltages below 2.0V?
Yes - the MAX6352SYUK+ guarantees RESET validity as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, and operates with supply ranges from 1.2V to 5.5V over temperature. Its 2.93V/2.19V thresholds remain accurate down to 1.2V supplies, enabling use in low-voltage systems such as single-cell battery-powered devices where rail voltages may dip near 2.0V during discharge.
Is the MAX6352SYUK+ pin-compatible with other members of the MAX6351–MAX6360 family?
No - the MAX6352SYUK+ uses a 5-pin SOT23 package, while most family members (e.g., MAX6351, MAX6355, MAX6359) use 6-pin SOT23. Even among 5-pin variants (MAX6352/MAX6353/MAX6354), pin functions differ: MAX6352 has open-drain RST on Pin 1, whereas MAX6353 provides push-pull RST on Pin 1 and MAX6354 provides push-pull RST referenced to VCC2. Direct replacement requires matching both package and functional pinout.
MAX6352SYUK+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.19V, 2.93V
- 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
MAX6352SYUK+ FAQ
1.How can I place an order for MAX6352SYUK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6352SYUK+ 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 MAX6352SYUK+ reliable?
The price and inventory of MAX6352SYUK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6352SYUK+ is usually 5 days.
3.What payment methods are accepted for MAX6352SYUK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6352SYUK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6352SYUK+?
MAX6352SYUK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6352SYUK+ 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 MAX6352SYUK+?
For technical support, including MAX6352SYUK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6352SYUK+ requirements.
6.How does Aetrix verify that MAX6352SYUK+ is sourced from the original manufacturer or authorized distributors?
All MAX6352SYUK+ 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 MAX6352SYUK+ meets industry standards.
7.What is the process for return or replacement of MAX6352SYUK+?
All MAX6352SYUK+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6352SYUK+, 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 MAX6352SYUK+ part is unused and in its original packaging.
Return procedure for MAX6352SYUK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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