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Analog Devices Inc./Maxim Integrated MAX6353UVUK
- Part No.:
- MAX6353UVUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353UVUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,427
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Product details
Overview
MAX6353UVUK from Maxim Integrated is a dual-voltage microprocessor supervisory IC with precision reset monitoring for VCC1 and VCC2, featuring factory-set thresholds of 2.78V (VTH1) and 1.58V (VTH2), active-low push-pull RST output referenced to VCC1, 100ms minimum reset pulse width, and 20µA supply current - deployed in multivoltage embedded systems requiring reliable power-on and brownout detection.
For engineers reviewing the MAX6353UVUK datasheet, MAX6353UVUK pinout, MAX6353UVUK application, or MAX6353UVUK equivalent, this device serves as a compact, low-power solution for validating dual-rail integrity in portable instrumentation, industrial controllers, and battery-powered equipment where guaranteed RESET validity down to VCC1 = 1.0V or VCC2 = 1.0V is critical.
Technical Context
The MAX6353UVUK implements independent voltage comparators for VCC1 and VCC2, asserting reset when either supply drops below its respective threshold (2.78V/1.58V). Its internal logic guarantees RST remains valid as long as at least one supply exceeds +1.0V, enabling robust operation during asymmetric rail collapse.
It includes a debounced TTL/CMOS-compatible manual reset input (MR) and supports no external components in dual-voltage configurations. Unlike MAX6358–MAX6360 variants, it lacks watchdog timer functionality, confirming its role as a dedicated dual-threshold supervisor without timing supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.78V ±0.08V over -40°C to +85°C - sets precise brownout detection point for primary supply rail |
| VCC2 Threshold | 1.58V ±0.09V over -40°C to +85°C - enables monitoring of low-voltage auxiliary or I/O rail |
| Reset Pulse Width | 100ms minimum - ensures sufficient duration for µP initialization and state recovery |
| Supply Current | 20µA typical at +25°C - supports ultra-low-power operation in battery-backed systems |
| RST Output Type | Active-low push-pull referenced to VCC1 - eliminates need for external pull-up and drives directly into µP reset pin |
| Operating Temp | -40°C to +85°C extended range - qualified for industrial and automotive-adjacent environments |
| RESET Validity | Guaranteed while VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - maintains deterministic reset assertion during deep undervoltage |
Pinout & Package
MAX6353UVUK is housed in a 5-pin SOT23-5 package with gull-wing leads, 1.6mm × 2.8mm footprint, and 0.95mm height - optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low push-pull reset output | Referenced to VCC1; sinks 1.2mA at VCC1 ≥ 2.7V; asserts when VCC1 < 2.78V or VCC2 < 1.58V |
| 2 - GND | Ground reference | Common return path for all internal circuitry and reset output stage |
| 3 - MR | Debounced manual reset input | Active-low; internally pulled up to VCC1; forces RST active for timeout period after release |
| 4 - VCC2 | Secondary supply input | Powers internal comparator for VCC2 monitoring; must be ≥1.2V for full functionality |
| 5 - VCC1 | Primary supply input | Powers entire IC and defines RST output voltage swing; supplies MR pullup and reset driver |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks VCC1 and VCC2 with separate, factory-trimmed thresholds - eliminates need for discrete comparators and resistive dividers |
| No external components required | Self-contained dual-rail supervision with integrated hysteresis, glitch filtering, and debounced MR - reduces BOM count and layout area |
| Low quiescent current | 20µA typical supply draw - extends battery life in always-on monitoring applications such as smart sensors and wearables |
| Guaranteed reset validity to 1.0V | RST remains functional even if VCC1 or VCC2 sags to 1.0V - ensures fail-safe behavior during severe brownouts |
| Power-supply transient immunity | Rejects short negative-going transients on VCC1/VCC2 per published transient duration vs. overdrive curve - prevents false resets from noise |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meter with dual rails: 3.3V MCU core and 1.8V sensor interface. IC Role / Device Role / Timing Role: MAX6353UVUK monitors both rails and asserts RST if either drops below threshold - ensuring clean boot before sensor calibration begins. Use Value: Prevents corrupted measurements by guaranteeing µP reset occurs before firmware executes, leveraging 100ms pulse width and 1.0V validity floor. |
Use Scenario: DIN-rail mounted I/O module with isolated 5V field power and 3.3V logic supply. IC Role / Device Role / Timing Role: MAX6353UVUK supervises 5V (VCC1) and 3.3V (VCC2) rails, triggering system-wide reset upon undervoltage - maintaining deterministic state across digital isolators and ADCs. Use Value: Enables safe shutdown and restart under brownout conditions without external supervision logic, using only its push-pull RST to drive FPGA configuration reset. |
| Smart Energy Meters | Automotive Body Control Units |
Use Scenario: Revenue-grade meter with backup supercapacitor supplying 2.5V real-time clock and 1.2V memory during AC loss. IC Role / Device Role / Timing Role: MAX6353UVUK configured with 2.78V/1.58V thresholds monitors main 3.3V rail and supercap backup - initiating graceful data save before power collapse. Use Value: Ensures EEPROM write completion via guaranteed RST assertion down to VCC1 = 1.0V, preventing partial writes during capacitor discharge. |
Use Scenario: BCM managing door locks, lighting, and CAN transceivers powered by 5V main and 3.3V domain supplies. IC Role / Device Role / Timing Role: MAX6353UVUK supervises both domains and forces coordinated reset - avoiding race conditions between microcontroller and peripheral drivers during cold crank. Use Value: Delivers deterministic startup sequence across voltage domains using single RST signal referenced to VCC1, eliminating need for level-shifted reset distribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353UTUK | VTH1 = 4.38V, VTH2 = 3.08V - higher thresholds for 5V/3.3V systems | Suitable for legacy industrial controllers with standard rail voltages, not low-voltage battery systems | Select when monitoring 5V and 3.3V rails instead of 2.78V/1.58V; same pinout and function |
| TLV803EC27DBVR | Single-supply supervisor (2.7V threshold only), SOT-23-5, no VCC2 monitoring | Lacks dual-rail capability - requires additional IC or discrete circuitry to monitor second voltage | Choose only if system has only one critical rail; MAX6353UVUK provides integrated dual monitoring with no added components |
Compared with MAX6353UTUK and TLV803EC27DBVR, the MAX6353UVUK uniquely delivers matched low-voltage thresholds (2.78V/1.58V) in a single 5-pin package with guaranteed 1.0V reset validity - making it optimal for modern battery-powered systems where rail headroom is constrained and component count must be minimized.
Availability
MAX6353UVUK is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart energy meters, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6353UVUK 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 industrial, communications, and consumer applications - emphasizing precision, integration, and reliability.
The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor supervision, delivering factory-trimmed dual-threshold monitoring with minimal external components in ultra-small packages.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353UVUK?
The MAX6353UVUK has a factory-set VCC1 threshold of 2.78V (±0.08V over -40°C to +85°C) and VCC2 threshold of 1.58V (±0.09V over the same range), as defined by the "UV" suffix in the Voltage Threshold Levels table - these values are laser-trimmed during production and do not require external calibration.
Does the MAX6353UVUK include a watchdog timer function?
No, the MAX6353UVUK does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants; the MAX6353UVUK is a dedicated dual-voltage supervisor with manual reset input and push-pull RST output only - confirmed by its absence in the Ordering Information and Pin Description tables.
What is the RST output type and drive capability of the MAX6353UVUK?
The MAX6353UVUK features an active-low push-pull RST output referenced to VCC1, capable of sinking 1.2mA at VCC1 ≥ 2.7V (VOL ≤ 0.3V) and sourcing 350µA at VCC1 ≥ 1.2V (VOH ≥ 0.8 × VCC1) - enabling direct connection to most µP reset inputs without external pull-up resistors.
Can the MAX6353UVUK operate with VCC1 and VCC2 at different voltage levels?
Yes, the MAX6353UVUK is explicitly designed for asymmetric dual-rail systems: VCC1 and VCC2 may differ (e.g., 3.3V and 1.8V), and the device guarantees RST validity as long as either supply remains ≥1.0V - a key feature validated in the Absolute Maximum Ratings and Electrical Characteristics sections.
Is the MAX6353UVUK pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6353UVUK uses the 5-pin SOT23-5 package and shares identical pinout with MAX6352/53/54 variants (RST, GND, MR, VCC2, VCC1), but differs from 6-pin versions (e.g., MAX6355/56/57/58/59/60) which add RSTIN or WDI pins - mechanical compatibility is limited to same-package variants only.
MAX6353UVUK 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:
- 1.58V, 2.78V
- Output:
- Push-Pull, Totem Pole
- 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
MAX6353UVUK FAQ
1.How can I place an order for MAX6353UVUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353UVUK 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 MAX6353UVUK reliable?
The price and inventory of MAX6353UVUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353UVUK is usually 5 days.
3.What payment methods are accepted for MAX6353UVUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353UVUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353UVUK?
MAX6353UVUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353UVUK 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 MAX6353UVUK?
For technical support, including MAX6353UVUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353UVUK requirements.
6.How does Aetrix verify that MAX6353UVUK is sourced from the original manufacturer or authorized distributors?
All MAX6353UVUK 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 MAX6353UVUK meets industry standards.
7.What is the process for return or replacement of MAX6353UVUK?
All MAX6353UVUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353UVUK, 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 MAX6353UVUK part is unused and in its original packaging.
Return procedure for MAX6353UVUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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