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Analog Devices Inc./Maxim Integrated MAX6353SYUK+T
- Part No.:
- MAX6353SYUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353SYUK+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:167
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Product details
Overview
MAX6353SYUK+T 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 operation over –40°C to +85°C - used in multivoltage embedded systems to ensure reliable power-on and brownout reset sequencing.
For engineers reviewing the MAX6353SYUK+T datasheet, MAX6353SYUK+T pinout, MAX6353SYUK+T application, or MAX6353SYUK+T equivalent, key selection factors include dual-supply threshold accuracy, guaranteed RESET validity down to VCC1 = 1V or VCC2 = 1V, manual-reset debouncing, and compatibility with 5-pin SOT23 PCB layouts.
Technical Context
The MAX6353SYUK+T monitors two independent supply rails (VCC1 and VCC2) and asserts its single active-low push-pull RST output when either falls below its respective factory-trimmed threshold (2.93V and 2.19V). Reset assertion is guaranteed as long as at least one supply remains ≥1.0V, enabling robust operation during asymmetric rail collapse.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), 100ms minimum power-on-reset pulse width, and no watchdog or third-voltage-monitor functionality - distinguishing it from MAX6359/MAX6356 (watchdog) or MAX6356/MAX6357 (RSTIN). The device uses BiCMOS process and operates without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; ensures precise reset initiation for 3.0V nominal rails |
| VCC2 Threshold | 2.19V ±0.03V at +25°C; supports monitoring of 2.5V or 2.2V auxiliary supplies |
| Supply Current | 20µA typical; enables ultra-low-power operation in battery-backed systems |
| Reset Pulse Width | 100–280ms; guarantees sufficient duration for μP initialization across temperature |
| Operating Temp | –40°C to +85°C; fully specified for industrial-grade embedded applications |
| RESET Validity | Guaranteed down to VCC1 = 1.0V or VCC2 = 1.0V; maintains reset integrity during deep brownout |
| Reset Output Type | Active-low push-pull referenced to VCC1; eliminates need for external pull-up resistor |
Pinout & Package
MAX6353SYUK+T is housed in a lead(Pb)-free 5-pin SOT23 package (U5-1 outline), with 1.6mm × 2.8mm footprint and 0.95mm height - compatible with standard high-density PCB assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; sinks 1.2mA @ 2.7V, drives valid logic low without external pull-up |
| 2 - GND | Ground reference | Common return path for both supply monitors and reset logic; must be low-impedance |
| 3 - MR | Manual-reset input | Debounced active-low input; forces reset while asserted and holds for timeout after release |
| 4 - VCC2 | Secondary supply input | Monitors second voltage rail (2.19V threshold); powers internal circuitry when VCC2 > VCC1 |
| 5 - VCC1 | Primary supply input | Monitors main voltage rail (2.93V threshold); powers device when VCC1 > VCC2 and references RST output |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage precision monitoring | Simultaneously tracks two independent rails with factory-trimmed 2.93V/2.19V thresholds - eliminates discrete resistor-divider design effort |
| Push-pull RST output | Single active-low output referenced to VCC1 removes dependency on external pull-up resistors and reduces BOM count |
| Low quiescent current | 20µA typical supply draw extends battery life in portable equipment and enables always-on supervision |
| Wide supply validity range | RESET remains valid even if VCC1 or VCC2 drops to 1.0V - critical for detecting partial rail collapse in multivoltage systems |
| Debounced manual reset | Internal filtering rejects <100ns glitches on MR pin, preventing spurious resets from mechanical switch bounce or noise |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Supervising dual-rail 3.3V/2.5V power domains in programmable logic controllers deployed in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Dual-voltage supervisor ensuring synchronized reset assertion during cold-start and brownout events across both rails. Use Value: Prevents firmware corruption by guaranteeing ≥100ms reset pulse width and maintaining reset validity down to 1.0V on either rail. | Use Scenario: Power management in handheld ECG or pulse oximeter units powered by single-cell Li-ion batteries with regulated 3.0V and LDO-derived 2.2V supplies. IC Role / Device Role / Timing Role: Low-current supervisor monitoring main and sensor-supply rails to trigger safe shutdown before battery depletion. Use Value: 20µA quiescent current extends operational runtime; 2.93V/2.19V thresholds match common medical LDO outputs. |
| Multivoltage IoT Edge Nodes | Intelligent Power Meters |
Use Scenario: Ensuring deterministic boot sequence in battery- or energy-harvesting-powered edge nodes with separate MCU core (2.8V) and RF transceiver (2.2V) supplies. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting unified reset signal to coordinate initialization of heterogeneous subsystems. Use Value: Eliminates need for two discrete supervisors or custom resistor networks - reduces board area and design validation effort. | Use Scenario: Monitoring primary 3.3V microcontroller supply and isolated 2.2V metrology ADC supply in ANSI C12.20-compliant smart meters operating at –25°C to +70°C. IC Role / Device Role / Timing Role: Industrial-grade voltage supervisor providing fail-safe reset under grid voltage sags and transformer tap changes. Use Value: Guaranteed operation over –40°C to +85°C and immunity to short VCC transients ensure compliance with utility-grade reliability 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 |
|---|---|---|---|
| MAX6353SYUK-T | Same electrical specs and pinout, but leaded (Pb-containing) packaging instead of lead-free (+T) | No difference in function or layout; differs only in RoHS compliance and soldering profile | Select +T for RoHS-compliant production; select -T only if legacy Pb-based assembly is required |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no VCC2 monitor or dual-threshold capability | Suitable only for single-rail systems; cannot replace MAX6353SYUK+T in dual-supply contexts without redesign | Use only if system has only one monitored rail; requires additional supervision circuitry for true dual-rail coverage |
Compared with MAX6353SYUK+T, the leaded MAX6353SYUK-T offers identical performance but lacks RoHS compliance, while TPS3808G33DBVR provides lower-cost single-rail supervision but cannot monitor two independent voltages - making MAX6353SYUK+T the only option for compact, accurate dual-threshold reset control in space-constrained industrial designs.
Availability
MAX6353SYUK+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, multivoltage IoT edge nodes, intelligent power meters, and battery-powered instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX6353SYUK+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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.
The MAX6351–MAX6360 product line delivers precision dual- and triple-voltage microprocessor supervisors targeting multirail embedded systems where reliability, low power, and minimal external components are critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353SYUK+T?
The MAX6353SYUK+T has factory-trimmed reset thresholds of 2.93V for VCC1 and 2.19V for VCC2, each with ±0.05V tolerance at +25°C and tighter limits over –40°C to +85°C per the Electrical Characteristics table. These values are confirmed in the Voltage Threshold Levels table where "SY" maps to 2.93V/2.19V, and are guaranteed across temperature without external calibration. The MAX6353SYUK+T does not support user-adjustable thresholds.
Does the MAX6353SYUK+T include a watchdog timer or third-voltage monitor?
No, the MAX6353SYUK+T does not include a watchdog timer or third-voltage monitor. It is a dual-voltage supervisor only, with no WDI pin or RSTIN input. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360, and third-voltage monitoring is limited to MAX6355/MAX6356/MAX6357. The MAX6353SYUK+T pinout (5-pin SOT23) confirms absence of WDI or RSTIN terminals - only RST, GND, MR, VCC2, and VCC1 are present.
What is the output type and drive strength of the RST pin on the MAX6353SYUK+T?
The RST pin on the MAX6353SYUK+T is an active-low push-pull output referenced to VCC1, capable of sinking 1.2mA at VCC1 ≥ 2.7V (VOL ≤ 0.3V) and 3.2mA at VCC1 ≥ 4.5V (VOL ≤ 0.4V). This eliminates the need for an external pull-up resistor. The output remains valid as long as VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - a key reliability feature confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections of the datasheet.
Can the MAX6353SYUK+T operate with supply voltages below 2.0V?
Yes, the MAX6353SYUK+T guarantees functional operation with VCC1 or VCC2 as low as 1.2V over the full –40°C to +85°C range, and RESET remains valid down to 1.0V on either supply. However, the 2.93V/2.19V thresholds mean it will assert reset when VCC1 drops below ~2.88V or VCC2 below ~2.16V (min spec). So while it *operates* near 1.0V, it is intended for systems with nominal rails ≥2.2V - such as 2.5V/2.2V or 3.0V/2.2V combinations - not sub-2.0V logic domains.
Is the MAX6353SYUK+T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6353SYUK+T shares the same 5-pin SOT23 package and pinout (RST/GND/MR/VCC2/VCC1) with MAX6352, MAX6354, and all other 5-pin variants in the family. However, output behavior differs: MAX6352 has open-drain RST, MAX6354's RST is referenced to VCC2, and MAX6353SYUK+T's RST is push-pull referenced to VCC1. Thus, while physically pin-compatible, electrical interface and reset sourcing/sinking characteristics require verification before substitution.
MAX6353SYUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX6353SYUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353SYUK+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 MAX6353SYUK+T reliable?
The price and inventory of MAX6353SYUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353SYUK+T is usually 5 days.
3.What payment methods are accepted for MAX6353SYUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353SYUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353SYUK+T?
MAX6353SYUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353SYUK+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 MAX6353SYUK+T?
For technical support, including MAX6353SYUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353SYUK+T requirements.
6.How does Aetrix verify that MAX6353SYUK+T is sourced from the original manufacturer or authorized distributors?
All MAX6353SYUK+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 MAX6353SYUK+T meets industry standards.
7.What is the process for return or replacement of MAX6353SYUK+T?
All MAX6353SYUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353SYUK+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 MAX6353SYUK+T part is unused and in its original packaging.
Return procedure for MAX6353SYUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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