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Analog Devices Inc./Maxim Integrated MAX6353SYUK
- Part No.:
- MAX6353SYUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353SYUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,763
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Product details
Overview
The MAX6353SYUK from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC1, precision factory-set thresholds of 2.93V (VCC1) and 2.19V (VCC2), 20µA supply current, and guaranteed operation from -40°C to +85°C. It monitors two independent power rails in multivoltage embedded systems and asserts reset if either supply drops below its threshold - used in portable instrumentation and battery-powered controllers requiring reliable power-up sequencing and brownout protection.
For engineers reviewing the MAX6353SYUK datasheet, MAX6353SYUK pinout, MAX6353SYUK application, or MAX6353SYUK equivalent, key selection criteria include dual-supply monitoring capability, VCC1-referenced reset output, SOT23-5 package compatibility, and absence of watchdog timer functionality - distinguishing it from MAX6359/MAX6360 variants.
Technical Context
This device implements dual independent voltage comparators with hysteresis, each feeding a reset generator with 100ms minimum pulse width and guaranteed validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V. Its internal logic ensures reset assertion occurs immediately upon either supply crossing its precise threshold, with no external components required for basic supervision.
The MAX6353SYUK uses BiCMOS process technology to achieve low quiescent current (20µA typ) while maintaining ±0.5% threshold accuracy over temperature and full supply range (1.2V–5.5V). It features debounced TTL/CMOS-compatible manual-reset input with sub-microsecond response and glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; factory-trimmed for accurate +2.93V rail monitoring |
| VCC2 Threshold | 2.19V ±0.05V at +25°C; enables precise supervision of secondary +2.19V domain |
| Supply Current | 20µA typical; enables ultra-low-power operation in battery-backed systems |
| Reset Pulse Width | 100ms minimum; ensures sufficient duration for microprocessor initialization |
| Operating Temp | -40°C to +85°C; fully specified for industrial-grade embedded deployment |
| Reset Output Type | Active-low push-pull referenced to VCC1; eliminates need for external pull-up resistor |
| Package | 5-pin SOT23; surface-mount compatible with high-density PCB layouts |
Pinout & Package
MAX6353SYUK is housed in a 5-pin SOT23 package (package code U5-1), footprint-compatible with industry-standard land pattern 90-0174. The device has no watchdog or third-voltage monitor inputs, distinguishing it from 6-pin variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; sinks 1.2mA at VCC1 ≥ 2.7V; valid down to VCC1 = 1.0V |
| 2 - GND | Ground reference | Common return path for both supply domains and internal comparators |
| 3 - MR | Manual-reset input | Debounced TTL/CMOS-compatible input; forces reset when pulled low; internally pulled up ~63.5kΩ |
| 4 - VCC2 | Secondary supply input | Monitors second rail; powers internal circuitry when VCC2 > VCC1; threshold = 2.19V |
| 5 - VCC1 | Primary supply input | Monitors main rail and references RST output; threshold = 2.93V; powers device when VCC1 > VCC2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of two distinct supply rails without shared reference or calibration drift |
| VCC1-referenced push-pull reset | Eliminates external pull-up resistor and associated board space, leakage, and timing uncertainty |
| Guaranteed reset validity to 1.0V | Ensures deterministic reset behavior during deep brownout conditions where supplies dip near cutoff |
| 20µA ultra-low quiescent current | Extends battery life in always-on portable equipment without sacrificing supervision reliability |
| 100ms min reset pulse width | Meets minimum reset hold time requirements of ARM Cortex-M, PIC, and MSP430 microcontrollers |
Applications
| Portable Medical Instrumentation | Battery-Powered Data Loggers |
|---|---|
Use Scenario: A handheld blood glucose meter operates from a single Li-ion cell (3.0–4.2V) and a regulated +2.2V analog sensor rail. IC Role / Device Role / Timing Role: MAX6353SYUK monitors both rails - primary at 2.93V (ensuring MCU core voltage stability) and secondary at 2.19V (validating sensor supply integrity) - asserting reset on first fault. Use Value: Prevents corrupted ADC readings or EEPROM writes during undervoltage events, meeting IEC 60601-1 safety-critical reset assurance requirements. |
Use Scenario: An environmental sensor node powered by coin-cell battery uses +3.0V MCU and +2.2V RF transceiver rails. IC Role / Device Role / Timing Role: MAX6353SYUK provides synchronized reset initiation across both domains using single RST signal referenced to VCC1, eliminating race conditions during cold start. Use Value: Guarantees consistent boot state across MCU and radio subsystems, reducing spurious wakeups and transmission errors in LPWAN deployments. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
Use Scenario: A DIN-rail mounted I/O module derives +3.3V logic and +2.2V isolated analog sensing rails from a 24V input. IC Role / Device Role / Timing Role: MAX6353SYUK supervises both rails with tight threshold tolerance, ensuring reset occurs before digital logic becomes metastable or analog front-end saturates. Use Value: Enables fail-safe shutdown before erroneous I/O state transitions cause actuator misfires or fieldbus communication loss. |
Use Scenario: A BCM uses +2.8V microcontroller rail and +2.2V CAN transceiver rail supplied from separate LDOs. IC Role / Device Role / Timing Role: MAX6353SYUK monitors both rails independently and asserts unified reset to prevent CAN controller initialization before transceiver is stable. Use Value: Avoids bus arbitration errors and TX error frames during power-up, satisfying ISO 11898-2 startup timing compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353SZUK | VCC1 threshold = 3.08V, VCC2 = 2.32V; otherwise identical pinout, timing, and electrical specs | Suitable for systems with +3.0V and +2.3V rails instead of +2.93V/+2.19V | Select when matching nominal supply voltages more closely improves noise margin or reduces false resets |
| TLV803SDBZR | Single-supply supervisor (3.08V threshold), SOT23-3, no VCC2 monitoring or MR input | Only monitors one rail; lacks dual-supply coordination and manual reset capability | Use only if system requires minimal footprint and single-rail supervision suffices |
Compared with MAX6353SYUK, MAX6353SZUK offers higher VCC1/VCC2 thresholds for tighter margin against ripple on +3.0V/+2.3V rails, while TLV803SDBZR sacrifices dual-rail coordination and manual reset for reduced size and cost - making it unsuitable for true multivoltage sequencing.
Availability
MAX6353SYUK is available at Aetrix Electronics and suitable for portable medical instrumentation, battery-powered data loggers, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6353SYUK 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 demanding industrial, automotive, and communications applications.
The MAX6351–MAX6360 family delivers precision dual- and triple-voltage supervision for multirail embedded systems, targeting applications where coordinated reset across independent power domains is critical to functional safety and data integrity.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353SYUK?
The MAX6353SYUK has a factory-set VCC1 threshold of 2.93V (±0.05V at +25°C) and VCC2 threshold of 2.19V (±0.05V at +25°C), as defined by the "SY" suffix in the Voltage Threshold Levels table. These values are trimmed during production and guaranteed over the full -40°C to +85°C operating range, with tempco ≤20ppm/°C.
Does the MAX6353SYUK include a watchdog timer function?
No, the MAX6353SYUK does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants (6-pin SOT23). The MAX6353SYUK is a 5-pin device with dedicated RST, GND, MR, VCC2, and VCC1 pins - confirming absence of WDI pin and related timing circuitry.
What is the reset output configuration of the MAX6353SYUK?
The MAX6353SYUK features a single active-low push-pull reset output (RST) referenced to VCC1. This differs from open-drain versions (e.g., MAX6352) and eliminates the need for an external pull-up resistor. The output drives low to ≤0.3V at 1.2mA load when VCC1 ≥ 2.7V, and remains valid down to VCC1 = 1.0V.
Can the MAX6353SYUK monitor three voltage rails?
No, the MAX6353SYUK monitors exactly two voltage rails: VCC1 and VCC2. Three-rail monitoring is provided only by MAX6355/MAX6356/MAX6357 (6-pin SOT23), which include the RSTIN pin for a third adjustable threshold. The MAX6353SYUK's 5-pin package lacks RSTIN, confirming dual-rail-only capability per its pin description and selector guide.
What package type and footprint does the MAX6353SYUK use?
The MAX6353SYUK uses a 5-pin SOT23 package (package code U5-1), with land pattern number 90-0174. Its pinout is GND (pin 2), VCC2 (pin 4), MR (pin 3), VCC1 (pin 5), and RST (pin 1) - matching the mechanical outline 21-0057. This compact surface-mount package supports automated assembly and high-density PCB layouts.
MAX6353SYUK 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:
- 2.19V, 2.93V
- 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
MAX6353SYUK FAQ
1.How can I place an order for MAX6353SYUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353SYUK 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 MAX6353SYUK reliable?
The price and inventory of MAX6353SYUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353SYUK is usually 5 days.
3.What payment methods are accepted for MAX6353SYUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353SYUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353SYUK?
MAX6353SYUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353SYUK 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 MAX6353SYUK?
For technical support, including MAX6353SYUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353SYUK requirements.
6.How does Aetrix verify that MAX6353SYUK is sourced from the original manufacturer or authorized distributors?
All MAX6353SYUK 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 MAX6353SYUK meets industry standards.
7.What is the process for return or replacement of MAX6353SYUK?
All MAX6353SYUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353SYUK, 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 MAX6353SYUK part is unused and in its original packaging.
Return procedure for MAX6353SYUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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