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Analog Devices Inc./Maxim Integrated MAX6354LTUK+T
- Part No.:
- MAX6354LTUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354LTUK+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,633
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Product details
Overview
MAX6354LTUK+T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC2, precision factory-set thresholds of 4.63V (VCC1) and 3.08V (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.
For engineers reviewing the MAX6354LTUK+T datasheet, MAX6354LTUK+T pinout, MAX6354LTUK+T application, or MAX6354LTUK+T equivalent, key selection criteria include dual-supply monitoring capability, VCC2-referenced reset output, 100ms minimum reset pulse width, and compatibility with 5-pin SOT23 PCB layouts.
Technical Context
The MAX6354LTUK+T implements dual independent voltage comparators with hysteresis, each tied to a dedicated supply input (VCC1 and VCC2). Its reset generator guarantees valid output as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, enabling robust brownout detection during asymmetric supply sequencing.
It features a debounced TTL/CMOS-compatible manual-reset input (MR) with sub-microsecond response and glitch rejection. Unlike watchdog-equipped variants (e.g., MAX6359/MAX6360), the MAX6354LTUK+T lacks watchdog timer functionality - confirmed by device family mapping and pinout exclusion of WDI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.13V over -40°C to +85°C - ensures reliable reset assertion when primary 5V rail drops below safe operating level |
| VCC2 Threshold | 3.08V ±0.13V over -40°C to +85°C - precisely monitors secondary 3.3V rail for undervoltage conditions |
| Reset Pulse Width | 100–280ms - meets μP reset timing requirements without external RC networks |
| Supply Current | 20µA typical - enables use in battery-backed or low-power always-on monitoring circuits |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Reset Output Type | Active-low push-pull referenced to VCC2 - drives reset line directly without pull-up resistor |
| Reset Valid Down To | VCC2 = 1.0V - maintains correct reset state during deep brownout or controlled power-down sequences |
Pinout & Package
MAX6354LTUK+T is housed in a 5-pin SOT23 package (U5-1 outline), footprint-compatible with industry-standard 5-pin SOT-23 land patterns (90-0174). The compact 2.9mm × 1.6mm body supports high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC2 - sinks 1.2mA at VCC2 ≥ 2.7V; drives reset line directly |
| 2 | GND | Ground reference for all internal comparators and logic - must be connected to system ground plane |
| 3 | MR | Debounced manual-reset input - asserted low forces reset; internally pulled up ~63.5kΩ to VCC1 |
| 4 | VCC2 | Secondary supply input and monitoring rail - powers internal circuitry when VCC2 > VCC1; threshold = 3.08V |
| 5 | VCC1 | Primary supply input and monitoring rail - threshold = 4.63V; powers device when VCC1 > VCC2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks VCC1 (4.63V) and VCC2 (3.08V); reset asserted if either falls below threshold |
| VCC2-referenced push-pull RST | Eliminates need for external pull-up resistor on reset line - reduces BOM count and layout area |
| Guaranteed reset validity down to 1.0V | Ensures deterministic reset behavior during slow power ramp-down or brownout recovery |
| 20µA ultra-low quiescent current | Enables continuous supervision in energy-constrained systems such as portable instrumentation |
| 100ms minimum reset pulse width | Meets or exceeds reset timing requirements of most ARM Cortex-M, PIC, and legacy 8-bit microcontrollers |
Applications
| Industrial PLCs | Medical Diagnostic Equipment |
|---|---|
Use Scenario: Monitoring dual 5V/3.3V rails powering FPGA configuration, ADC interface, and real-time controller in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-supply supervisor ensuring synchronized reset across logic and analog subsystems during cold start or brownout. Use Value: Prevents partial initialization and metastability by asserting reset until both supplies stabilize above 4.63V and 3.08V respectively. | Use Scenario: Supervising power rails for patient-monitoring front-end (3.3V analog sensors) and digital processing core (5V MCU) in portable ECG devices. IC Role / Device Role / Timing Role: VCC2-referenced RST output directly drives MCU reset pin, eliminating external level-shifting components. Use Value: 20µA supply current extends battery life while maintaining fail-safe reset integrity during low-power sleep modes. |
| Automotive Infotainment Head Units | Network Edge Routers |
Use Scenario: Monitoring main 5V domain and auxiliary 3.3V I/O rail in automotive-grade infotainment modules subjected to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Precision threshold detection (±0.13V) rejects short-duration transients while responding reliably to sustained undervoltage events. Use Value: Reset pulse width (100–280ms) accommodates variable boot times across different SoC families without firmware modification. | Use Scenario: Ensuring clean startup and fault recovery for dual-rail switch fabric (5V control logic, 3.3V SerDes PHY) in carrier-class edge routers. IC Role / Device Role / Timing Role: Guarantees RESET remains valid even if VCC2 drops to 1.0V - critical during hot-swap or partial power-loss scenarios. Use Value: Eliminates need for backup capacitors or auxiliary supervisors, reducing bill-of-materials and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353LTUK+T | VCC1-referenced RST output (not VCC2); identical thresholds (4.63V/3.08V) and package | Requires reset line referenced to primary 5V rail instead of secondary 3.3V rail | Select when system reset logic is powered from VCC1 and direct drive from that rail is preferred |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only); no VCC1/VCC2 dual monitoring; 350ms reset timeout | Lacks dual-rail coordination - cannot detect mismatched dropouts between 5V and 3.3V domains | Choose only for single-rail systems where cost and footprint are prioritized over multivoltage integrity |
Compared with MAX6353LTUK+T, the MAX6354LTUK+T provides VCC2-referenced reset drive essential for 3.3V-native processors; compared with TPS3808G33DBVR, it delivers coordinated dual-supply supervision with tighter threshold accuracy (±2.8% vs ±3.5%) and lower quiescent current (20µA vs 24µA).
Availability
MAX6354LTUK+T is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive infotainment systems requiring stable component supply, RoHS-compliant packaging, and extended temperature operation.
Supply support for MAX6354LTUK+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) designs precision analog and mixed-signal ICs for industrial, medical, and communications applications, with emphasis on reliability and integration.
The MAX6351–MAX6360 product line delivers dual- and triple-voltage microprocessor supervisors optimized for multirail embedded systems where coordinated power sequencing and brownout immunity are critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354LTUK+T?
The MAX6354LTUK+T has a factory-set VCC1 threshold of 4.63V (±0.13V over -40°C to +85°C) and a VCC2 threshold of 3.08V (±0.13V over the same temperature range). These values are laser-trimmed during production and documented in the Voltage-Threshold Levels table of the MAX6354LTUK+T datasheet.
Does the MAX6354LTUK+T include a watchdog timer function?
No, the MAX6354LTUK+T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants, which feature WDI pins and dual-mode timeout architecture. The MAX6354LTUK+T pinout omits WDI and contains only MR, RST, GND, VCC2, and VCC1 pins.
What is the reset output configuration of the MAX6354LTUK+T?
The MAX6354LTUK+T provides a single active-low push-pull reset output (RST) referenced to VCC2. This means the output stage is powered from and swings between GND and VCC2, eliminating the need for an external pull-up resistor and enabling direct interface with VCC2-domain logic.
Can the MAX6354LTUK+T operate if one supply rail is absent or at 0V?
Yes - the MAX6354LTUK+T guarantees valid reset output as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V. If VCC1 is absent but VCC2 is ≥ 1.0V, the device remains functional and will assert RST if VCC2 drops below 3.08V. This behavior is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics sections.
What package type and footprint does the MAX6354LTUK+T use?
The MAX6354LTUK+T uses a 5-pin SOT23 package (package code U5-1, outline 21-0057), with a standard land pattern (90-0174). Its dimensions are 2.9mm × 1.6mm × 1.1mm, and it is lead(Pb)-free, indicated by the "+T" suffix in the part number.
MAX6354LTUK+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:
- 3.08V, 4.63V
- 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
MAX6354LTUK+T FAQ
1.How can I place an order for MAX6354LTUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354LTUK+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 MAX6354LTUK+T reliable?
The price and inventory of MAX6354LTUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354LTUK+T is usually 5 days.
3.What payment methods are accepted for MAX6354LTUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354LTUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354LTUK+T?
MAX6354LTUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354LTUK+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 MAX6354LTUK+T?
For technical support, including MAX6354LTUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354LTUK+T requirements.
6.How does Aetrix verify that MAX6354LTUK+T is sourced from the original manufacturer or authorized distributors?
All MAX6354LTUK+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 MAX6354LTUK+T meets industry standards.
7.What is the process for return or replacement of MAX6354LTUK+T?
All MAX6354LTUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354LTUK+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 MAX6354LTUK+T part is unused and in its original packaging.
Return procedure for MAX6354LTUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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