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Analog Devices Inc./Maxim Integrated MAX6354SVUK-T
- Part No.:
- MAX6354SVUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354SVUK-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6354SVUK-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 2.93V (VCC1) and 1.58V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC2 = 1.0V. It monitors two independent power rails in multivoltage embedded systems such as portable instrumentation and industrial controllers.
For engineers reviewing the MAX6354SVUK-T datasheet, MAX6354SVUK-T pinout, MAX6354SVUK-T application, or MAX6354SVUK-T equivalent, key selection criteria include dual-supply threshold accuracy, VCC2-referenced reset assertion, manual-reset debouncing, temperature-stable hysteresis, and SOT23-5 footprint compatibility for space-constrained PCBs.
Technical Context
The MAX6354SVUK-T implements dual independent voltage comparators with precision bandgap references, each feeding a glitch-filtered reset generator. Its reset logic asserts RST low when either VCC1 drops below 2.93V or VCC2 drops below 1.58V, with hysteresis of VTH/500 to prevent chatter during slow supply ramps.
It features a debounced TTL/CMOS-compatible manual-reset input (MR) that forces reset for ≥1µs pulse width and maintains reset for the full timeout period after release. The device operates across -40°C to +85°C with no external components required for dual-rail monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; guarantees reliable reset assertion on 3.0V or 2.93V nominal supplies |
| VCC2 Threshold | 1.58V ±0.03V at +25°C; enables monitoring of low-voltage rails like 1.8V LDO outputs |
| Reset Timeout Period | 100–280ms; ensures sufficient hold time for processor initialization sequences |
| Supply Current | 20µA typical; supports battery-powered operation over full temperature range |
| RESET Output Type | Active-low push-pull referenced to VCC2; eliminates need for external pull-up resistor |
| Operating Temperature | -40°C to +85°C; qualified for industrial and extended-temperature embedded applications |
| Reset Validity Range | Valid down to VCC2 = 1.0V; maintains functional reset even during deep brownout conditions |
Pinout & Package
MAX6354SVUK-T is housed in a 5-pin SOT23 package (U5-1 outline), with 1.6mm × 2.8mm footprint and 0.95mm height. Pin 1 is RST (active-low push-pull output referenced to VCC2), Pin 2 is GND, Pin 3 is MR (manual-reset input), Pin 4 is VCC2, and Pin 5 is VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC2; sinks 1.2mA at VCC2 ≥ 2.7V, valid down to VCC2 = 1.0V |
| 2 - GND | Ground reference | Common return path for all internal comparators and logic; must be low-impedance |
| 3 - MR | Manual-reset input | Debounced TTL/CMOS-compatible input; pull low ≥1µs to force reset; internally pulled up ~63.5kΩ |
| 4 - VCC2 | Secondary supply input | Monitors second rail and powers internal circuitry when VCC2 > VCC1; threshold = 1.58V |
| 5 - VCC1 | Primary supply input | Monitors first rail; threshold = 2.93V; powers device when VCC1 > VCC2; max rating = +6V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks VCC1 (2.93V) and VCC2 (1.58V) with separate comparators and hysteresis |
| VCC2-referenced reset output | RST pin driven directly from VCC2 rail-ensures correct logic levels for peripherals powered by same supply |
| Guaranteed reset validity to 1.0V | Functional reset generation continues even if VCC2 sags to 1.0V, critical for brownout recovery |
| 20µA ultra-low quiescent current | Enables multi-year battery life in always-on monitoring applications without compromising response speed |
| 100ms minimum power-on reset pulse | Meets or exceeds most microcontroller POR requirements without external timing components |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered handheld glucose meters requiring reliable power sequencing and brownout detection across 3.3V MCU and 1.8V sensor rails. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset on either rail failure, with VCC2-referenced RST tied to 1.8V sensor domain. Use Value: Prevents corrupted sensor readings during partial power loss by holding MCU in reset until both rails stabilize above 2.93V and 1.58V. |
Use Scenario: DIN-rail mounted programmable logic controller modules with isolated 24V DC input converted to 5V and 3.3V system rails. IC Role / Device Role / Timing Role: Monitors 5V (VCC1) and 3.3V (VCC2) domains; RST output drives FPGA configuration reset line referenced to 3.3V domain. Use Value: Ensures deterministic FPGA reconfiguration only after both power domains are stable, eliminating metastability during cold start. |
| Smart Energy Meters | Automotive Body Control Units |
|
Use Scenario: ANSI C12.20-compliant electricity meters using dual-core SoC with separate 1.2V core and 3.3V interface voltages. IC Role / Device Role / Timing Role: Supervises 3.3V (VCC1) and 1.2V (VCC2) rails; RST output referenced to 1.2V domain controls SoC reset pin. Use Value: Guarantees reset remains asserted during 1.2V rail ramp-up-even if 3.3V stabilizes first-preventing premature core execution. |
Use Scenario: CAN-connected body control module with 5V microcontroller and 1.5V transceiver supply derived from local LDO. IC Role / Device Role / Timing Role: Monitors main 5V rail (VCC1) and transceiver 1.5V rail (VCC2); RST output referenced to 1.5V ensures clean CAN PHY reset. Use Value: Eliminates bus arbitration errors caused by transceiver powering up before MCU reset completes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353SVUK-T | Reset output referenced to VCC1 (not VCC2); identical thresholds and package | Requires reset load referenced to primary supply; unsuitable where reset must track secondary rail | Select when RST must interface with VCC1-domain logic (e.g., 3.3V MCU reset pin) |
| TPS3808G15DBVR | Single-supply monitor (1.5V threshold only); no VCC1/VCC2 dual-input architecture | Lacks dual-rail coordination; requires separate ICs or external logic for multivoltage systems | Choose only for single-rail applications where cost-per-rail is prioritized over integration |
Compared with MAX6354SVUK-T, MAX6353SVUK-T provides identical monitoring capability but ties RST to VCC1-making it incompatible when the reset load shares VCC2. TPS3808G15DBVR offers lower cost per threshold but increases BOM count and PCB area for dual-rail designs.
Availability
MAX6354SVUK-T 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 MAX6354SVUK-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 high-performance analog and mixed-signal ICs for industrial, communications, and consumer applications, with emphasis on power efficiency and reliability.
The MAX6351–MAX6360 family delivers integrated dual- and triple-voltage supervision for multirail embedded systems, targeting applications where discrete solutions increase board area, cost, and failure risk.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354SVUK-T?
The MAX6354SVUK-T has a factory-set VCC1 threshold of 2.93V (±0.05V at +25°C) and VCC2 threshold of 1.58V (±0.03V at +25°C), as defined by the "SV" suffix in the Voltage Threshold Levels table. These values are guaranteed over -40°C to +85°C with 20ppm/°C tempco and VTH/500 hysteresis.
Does the MAX6354SVUK-T provide watchdog timer functionality?
No, the MAX6354SVUK-T does not include a watchdog timer. Watchdog capability is exclusive to the MAX6358/MAX6359/MAX6360 variants in the family. The MAX6354SVUK-T provides only dual-voltage monitoring, manual reset, and reset timeout-no WDI pin or associated timing circuitry.
How is the reset output referenced, and why does that matter for my design?
The MAX6354SVUK-T's RST output is an active-low push-pull driver referenced to VCC2. This means its logic low level is near 0V and its logic high level equals VCC2-not VCC1. It matters because connecting RST to a load powered by VCC2 avoids level-shifting issues and ensures noise margin compliance within that domain.
Can the MAX6354SVUK-T operate if one supply falls below 1.0V?
Yes-the MAX6354SVUK-T guarantees valid reset output as long as either VCC1 or VCC2 remains above +1.0V. Specifically, RST remains functional down to VCC2 = 1.0V, enabling robust brownout handling in systems where secondary rails may sag deeper than primary rails.
What package type and footprint does the MAX6354SVUK-T use?
The MAX6354SVUK-T uses a 5-pin SOT23 package (outline U5-1, land pattern 90-0174), measuring 1.6mm × 2.8mm with 0.95mm height. Pin 1 is RST, Pin 2 is GND, Pin 3 is MR, Pin 4 is VCC2, and Pin 5 is VCC1-matching standard SOT23-5 assembly processes.
MAX6354SVUK-T 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, 2.93V
- 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
MAX6354SVUK-T FAQ
1.How can I place an order for MAX6354SVUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354SVUK-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 MAX6354SVUK-T reliable?
The price and inventory of MAX6354SVUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354SVUK-T is usually 5 days.
3.What payment methods are accepted for MAX6354SVUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354SVUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354SVUK-T?
MAX6354SVUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354SVUK-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 MAX6354SVUK-T?
For technical support, including MAX6354SVUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354SVUK-T requirements.
6.How does Aetrix verify that MAX6354SVUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6354SVUK-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 MAX6354SVUK-T meets industry standards.
7.What is the process for return or replacement of MAX6354SVUK-T?
All MAX6354SVUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354SVUK-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 MAX6354SVUK-T part is unused and in its original packaging.
Return procedure for MAX6354SVUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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