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Analog Devices Inc./Maxim Integrated MAX6354LSUK+T
- Part No.:
- MAX6354LSUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354LSUK+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,425
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Product details
Overview
MAX6354LSUK+T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC2, factory-set VCC1 threshold of 4.63V and VCC2 threshold of 2.93V, 100ms minimum reset timeout, 20µA supply current, and operation over –40°C to +85°C for multivoltage embedded power monitoring in portable instrumentation.
For engineers reviewing the MAX6354LSUK+T datasheet, MAX6354LSUK+T pinout, MAX6354LSUK+T application, or MAX6354LSUK+T equivalent, key selection criteria include dual-supply reset assertion logic, VCC2-referenced RST2 output compatibility, guaranteed RESET validity down to VCC2 = 1.0V, and SOT23-5 footprint constraints in space-constrained battery-powered systems.
Technical Context
The MAX6354LSUK+T monitors two independent supply rails (VCC1 and VCC2), asserting its single active-low push-pull RST2 output when either supply drops below its precision factory-trimmed threshold - 4.63V for VCC1 and 2.93V for VCC2 - with ±0.15V accuracy over temperature. Reset remains valid as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V.
It features a debounced TTL/CMOS-compatible manual-reset input (MR) that forces reset when pulled low, with 1µs minimum pulse width and 100ns glitch rejection. Unlike MAX6358–MAX6360 variants, it lacks watchdog timer functionality and third-voltage monitoring capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.15V at -40°C to +85°C - ensures reliable reset assertion on main system rail dropout |
| VCC2 Threshold | 2.93V ±0.15V at -40°C to +85°C - enables precise monitoring of secondary logic or I/O supply |
| Reset Timeout | 100ms min - guarantees sufficient processor initialization time after power stabilization |
| Supply Current | 20µA typical - supports ultra-low-power operation in battery-backed or energy-harvesting systems |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| RESET Output | Active-low push-pull referenced to VCC2 - eliminates external pull-up and simplifies interface to VCC2-domain logic |
| MR Input | Debounced, 1µs min pulse width - prevents spurious resets from mechanical switch bounce or noise |
Pinout & Package
MAX6354LSUK+T is housed in a lead(Pb)-free 5-pin SOT23 package (U5-1 outline), with 1.6mm × 2.9mm footprint and 0.95mm height, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST2 | Active-low reset output | Push-pull driver referenced to VCC2; sinks 1.2mA @ VCC2 ≥ 2.7V; valid down to VCC2 = 1.0V |
| 2 - GND | Ground reference | Common return path for internal comparators, MR input, and RST2 output stage |
| 3 - MR | Manual-reset input | Active-low, debounced; asserts RST2 when pulled ≤0.8V (for L/M suffixes); requires no external RC |
| 4 - VCC2 | Secondary supply input | Powers device and sets RST2 reference; monitored at 2.93V threshold; must be ≥1.0V for valid RESET |
| 5 - VCC1 | Primary supply input | Monitored at 4.63V threshold; powers internal circuitry when > VCC2; must be ≥1.0V for valid RESET |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage monitoring | Independent 4.63V (VCC1) and 2.93V (VCC2) thresholds with ±0.15V tolerance over full temperature range |
| VCC2-referenced RST2 | Eliminates need for level-shifting or external pull-up when interfacing to VCC2-domain processors or FPGAs |
| Low quiescent current | 20µA typical enables >10-year battery life in always-on supervisory applications |
| Guaranteed RESET down to 1.0V | Ensures deterministic reset behavior during brownout or controlled power-down sequences |
| No external components | Factory-trimmed thresholds and integrated debounce remove resistors, capacitors, and Schmitt triggers |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered handheld glucose meters requiring reliable power-on reset and supply fault detection across main 4.5V Li-ion rail and 3.0V sensor analog front-end. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting RST2 to microcontroller upon VCC2 (3.0V sensor rail) undervoltage, while maintaining reset validity during VCC1 decay. Use Value: Prevents corrupted ADC readings or EEPROM writes during partial power loss by guaranteeing reset until both supplies stabilize. | Use Scenario: DIN-rail mounted programmable logic controller with separate 5V logic and 24V field I/O supplies needing coordinated reset signaling. IC Role / Device Role / Timing Role: Monitors 4.63V VCC1 (5V logic rail) and 2.93V VCC2 (derived 3.0V I/O rail), asserting VCC2-referenced RST2 to isolate I/O domain reset timing. Use Value: Enables independent power sequencing - logic domain boots first, then I/O domain resets only after its dedicated supply reaches regulation. |
| Wireless Sensor Node Gateways | Automotive Body Control Modules |
Use Scenario: LoRaWAN edge gateway powered by 4.2V LiPo and 3.3V RF transceiver supply, where brownout on either rail must halt MCU execution. IC Role / Device Role / Timing Role: Supervises both rails simultaneously; RST2 output tied directly to 3.3V-domain MCU reset pin without level translation. Use Value: Reduces BOM count by eliminating discrete voltage detectors and OR-gate reset combiners in dual-rail architectures. | Use Scenario: 12V automotive body control unit with internal 5V MCU supply and 3.3V CAN transceiver supply requiring fail-safe reset coordination. IC Role / Device Role / Timing Role: Tracks 4.63V (5V MCU rail) and 2.93V (3.3V CAN rail); asserts RST2 referenced to 3.3V to ensure CAN transceiver reset aligns with its own supply domain. Use Value: Avoids CAN bus lockup by guaranteeing transceiver reset occurs only when its local 3.3V supply meets specification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353LSUK+T | Same thresholds (4.63V/2.93V) but RST output referenced to VCC1 instead of VCC2 | Requires VCC1-domain reset interface; incompatible with VCC2-referenced MCU reset pins | Select when reset signal must be referenced to primary supply rail |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no dual-rail monitoring; 350ms reset timeout; 1.5µA IQ | Lacks VCC1/VCC2 independence; cannot assert reset on secondary rail failure alone | Choose only for single-rail systems where ultra-low IQ outweighs dual-monitoring need |
Compared with MAX6353LSUK+T, the MAX6354LSUK+T provides VCC2-referenced reset essential for isolating I/O domain faults; versus TPS3808G33DBVR, it delivers true dual-threshold supervision critical for multivoltage SoC power integrity - neither offers pin-to-pin compatibility.
Availability
MAX6354LSUK+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, wireless sensor node gateways, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6354LSUK+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 power management, sensing, and interface applications in industrial, automotive, and communications systems.
The MAX6351–MAX6360 family delivers dual- and triple-voltage µP supervisors optimized for reliability-critical embedded systems where simultaneous monitoring of multiple supply rails prevents silent data corruption during power transients.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354LSUK+T?
The MAX6354LSUK+T has a factory-set VCC1 threshold of 4.63V (±0.15V over –40°C to +85°C) and a VCC2 threshold of 2.93V (±0.15V over the same range), as defined by the "LS" suffix per Maxim's Voltage Threshold Levels table. These values are laser-trimmed during production and do not require external calibration.
Does the MAX6354LSUK+T include a watchdog timer function?
No, the MAX6354LSUK+T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6354LSUK+T provides only dual-voltage monitoring and manual reset, with no WDI pin or timeout circuitry.
Can the MAX6354LSUK+T operate with VCC2 below 2.93V while still providing a valid reset signal?
Yes - the MAX6354LSUK+T guarantees valid RST2 output state as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, even if both supplies fall below their respective threshold voltages. This ensures deterministic reset behavior during brownout conditions before complete power collapse.
What is the package type and RoHS status of the MAX6354LSUK+T?
The MAX6354LSUK+T uses a 5-pin SOT23 package (U5-1 outline) and is lead(Pb)-free, indicated by the "+T" suffix. It complies with RoHS Directive 2011/65/EU and is compatible with standard reflow soldering profiles for surface-mount assembly.
How does the manual reset (MR) input behave on the MAX6354LSUK+T?
The MR input on the MAX6354LSUK+T is active-low and internally debounced. Pulling MR ≤0.8V (for LS suffix) forces immediate RST2 assertion; release triggers a 100ms minimum reset pulse. Glitch rejection is 100ns, and no external components are required for reliable operation.
MAX6354LSUK+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:
- 2.93V, 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
MAX6354LSUK+T FAQ
1.How can I place an order for MAX6354LSUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354LSUK+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 MAX6354LSUK+T reliable?
The price and inventory of MAX6354LSUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354LSUK+T is usually 5 days.
3.What payment methods are accepted for MAX6354LSUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354LSUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354LSUK+T?
MAX6354LSUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354LSUK+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 MAX6354LSUK+T?
For technical support, including MAX6354LSUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354LSUK+T requirements.
6.How does Aetrix verify that MAX6354LSUK+T is sourced from the original manufacturer or authorized distributors?
All MAX6354LSUK+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 MAX6354LSUK+T meets industry standards.
7.What is the process for return or replacement of MAX6354LSUK+T?
All MAX6354LSUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354LSUK+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 MAX6354LSUK+T part is unused and in its original packaging.
Return procedure for MAX6354LSUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6354LSUK+T Tags
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MIC826SYMT-TR
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