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Analog Devices Inc./Maxim Integrated MAX6354SWUK
- Part No.:
- MAX6354SWUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354SWUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,979
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Product details
Overview
MAX6354SWUK 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 1.67V (VCC2), 20µA supply current, and operation over –40°C to +85°C - used in multivoltage systems to ensure reliable power-on reset and supply monitoring.
For engineers reviewing the MAX6354SWUK datasheet, MAX6354SWUK pinout, MAX6354SWUK application, or MAX6354SWUK equivalent, key selection criteria include its VCC2-referenced RST output, dual-threshold monitoring capability, manual-reset debouncing, low quiescent current, and SOT23-5 package compatibility for space-constrained embedded designs.
Technical Context
The MAX6354SWUK monitors two independent supply rails (VCC1 and VCC2), asserting reset whenever either drops below its respective factory-trimmed threshold (2.93V and 1.67V). Its reset output is push-pull and referenced to VCC2, ensuring valid logic levels even when VCC1 falls as low as 1.0V - provided VCC2 remains ≥1.0V.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), guarantees RESET validity down to VCC2 = 1.0V, and provides 100ms minimum power-on-reset pulse width. No watchdog timer or third-voltage monitor is included - confirmed by device family mapping and pin configuration data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; ensures precise detection of +2.93V rail undervoltage |
| VCC2 Threshold | 1.67V ±0.03V at +25°C; enables reliable monitoring of low-voltage logic or I/O supplies |
| Supply Current | 20µA typical; supports ultra-low-power battery-backed or always-on monitoring |
| Reset Pulse Width | 100–280ms; meets μP reset timing requirements across temperature and voltage |
| Operating Temp | –40°C to +85°C; qualified for industrial and extended-temperature embedded use |
| Reset Output Type | Active-low push-pull referenced to VCC2; eliminates external pull-up and simplifies interface |
| MR Input Compatibility | TTL/CMOS-debounced; accepts standard logic-level manual reset signals without external RC |
Pinout & Package
MAX6354SWUK is housed in a 5-pin SOT23 package (U5-1 outline), surface-mount, RoHS-compliant, with 0.95mm pitch and 2.9mm × 1.6mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC2; sinks 1.2mA @ VCC2 ≥ 2.7V; no external pull-up needed |
| 2 - GND | Ground reference | Common return for both supply rails and internal comparators |
| 3 - MR | Manual-reset input | Debounced, TTL/CMOS-compatible; pulling low forces reset; unconnected = high via internal pullup |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when active; monitored at 1.67V threshold; defines RST logic levels |
| 5 - VCC1 | Primary supply input | Monitored at 2.93V threshold; must remain ≥1.0V or VCC2 ≥1.0V for valid RESET assertion |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks +2.93V (VCC1) and +1.67V (VCC2) rails with separate trip points |
| VCC2-referenced push-pull RST | Eliminates need for external pull-up resistor and ensures robust drive into μP reset pin |
| Guaranteed RESET validity to 1.0V | Output remains functional even if VCC2 drops to 1.0V - critical for brownout resilience |
| 20µA ultra-low supply current | Enables permanent system supervision without impacting battery life in portable equipment |
| 100ms min POR pulse width | Meets or exceeds reset timing requirements of most microcontrollers and FPGAs |
Applications
| Battery-Powered IoT Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: A wireless sensor node powered by a single Li-ion cell (3.0–4.2V) and a 1.8V LDO supplying MCU core logic. IC Role / Device Role / Timing Role: MAX6354SWUK monitors both the main battery rail (VCC1 = 2.93V threshold) and the 1.8V logic rail (VCC2 = 1.67V threshold), asserting RST if either sags during deep discharge or load transients. Use Value: Prevents MCU lockup or corrupted memory writes during brownout by guaranteeing reset assertion while VCC2 ≥ 1.0V - extending operational margin beyond typical 1.8V LDO dropout. | Use Scenario: An isolated digital I/O module in a programmable logic controller, powered by 24V DC converted to +5V and +3.3V rails. IC Role / Device Role / Timing Role: MAX6354SWUK supervises the +3.3V FPGA I/O bank (VCC1 = 2.93V threshold) and +1.8V auxiliary logic (VCC2 = 1.67V threshold), generating a unified reset signal referenced to the lower rail. Use Value: Ensures deterministic startup sequencing and fault recovery across mixed-voltage domains without requiring multiple discrete supervisors or level-shifting circuitry. |
| Medical Diagnostic Handheld | Automotive Body Control Module (BCM) |
Use Scenario: A portable ultrasound device using dual-supply analog front-end (AVDD = 3.3V) and digital subsystem (DVDD = 1.8V). IC Role / Device Role / Timing Role: MAX6354SWUK monitors AVDD (VCC1 = 2.93V) and DVDD (VCC2 = 1.67V), asserting RST on either rail collapse - with RST referenced to DVDD to match processor reset input voltage domain. Use Value: Maintains safe shutdown behavior under partial power loss, preventing analog/digital synchronization faults that could cause erroneous readings or safety-critical timing violations. | Use Scenario: A BCM subassembly with +5V microcontroller supply and +1.2V CAN transceiver I/O rail. IC Role / Device Role / Timing Role: MAX6354SWUK monitors +5V MCU rail (VCC1 = 2.93V threshold) and +1.2V CAN I/O rail (VCC2 = 1.67V threshold), asserting RST referenced to the CAN rail to ensure transceiver readiness before MCU boot. Use Value: Guarantees CAN communication integrity at power-up by synchronizing MCU reset release with stable transceiver supply - avoiding bus arbitration errors or false dominant states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353SWUK | Same thresholds (2.93V/1.67V), but RST output referenced to VCC1 instead of VCC2 | Requires VCC1 ≥ 2.7V for full RST drive strength; unsuitable when VCC1 is noisy or unstable relative to VCC2 | Select MAX6353SWUK only if reset must be referenced to the higher-voltage rail and VCC1 remains stable during fault conditions. |
| TPS3808G16DBVR | Single-supply supervisor (1.6V threshold), no dual-rail monitoring; 360ms reset timeout; 2.5µA IQ | Lacks VCC1/VCC2 independence; cannot assert reset based on two distinct supply faults simultaneously | Use TPS3808G16DBVR only for single-rail systems where ultra-low IQ outweighs need for dual monitoring. |
Compared with MAX6353SWUK, MAX6354SWUK provides superior immunity to VCC1 transients by referencing RST to VCC2 - making it preferred when the lower rail is more stable. Versus TPS3808G16DBVR, MAX6354SWUK delivers true dual-threshold supervision essential for multivoltage SoC or FPGA power sequencing, despite higher quiescent current.
Availability
MAX6354SWUK is available at Aetrix Electronics and suitable for battery-powered IoT nodes, industrial PLC I/O modules, medical handheld diagnostics, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6354SWUK 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, mixed-signal, and power-management ICs for industrial, computing, communications, and consumer applications.
The MAX6351–MAX6360 family delivers dual- and triple-voltage microprocessor supervisors optimized for reliability-critical embedded systems requiring accurate, low-power, multi-rail power monitoring with guaranteed operation down to 1.0V.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354SWUK?
The MAX6354SWUK has a factory-set VCC1 threshold of 2.93V (±0.05V at +25°C) and a VCC2 threshold of 1.67V (±0.03V at +25°C), as defined by the "SW" suffix per Maxim's Voltage Threshold Levels table. These values are precision-trimmed and guaranteed over –40°C to +85°C, with tempco ≤20ppm/°C.
Is the reset output of the MAX6354SWUK open-drain or push-pull, and which supply does it reference?
The MAX6354SWUK features an active-low push-pull reset output (RST) referenced to VCC2 - not open-drain and not referenced to VCC1. This allows direct connection to microcontroller reset inputs without external pull-up resistors and ensures valid logic levels as long as VCC2 ≥ 1.0V.
Does the MAX6354SWUK include a watchdog timer function?
No, the MAX6354SWUK does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants (6-pin SOT23). The MAX6354SWUK is a 5-pin device with dual-voltage monitoring and manual reset only - confirmed by its pin configuration, ordering information, and family selector guide.
What is the minimum supply voltage required for the MAX6354SWUK to maintain a valid reset output?
The MAX6354SWUK guarantees valid reset output (RST) as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - per Absolute Maximum Ratings and Electrical Characteristics. Specifically, RST remains asserted or deasserted correctly down to VCC2 = 1.0V, enabling operation during deep brownout conditions where VCC2 is the more stable rail.
Can the MAX6354SWUK monitor three voltage rails?
No, the MAX6354SWUK monitors exactly two voltage rails: VCC1 and VCC2. Monitoring of a third voltage (e.g., via RSTIN pin) is only supported by MAX6355/MAX6356/MAX6357 (6-pin variants). The MAX6354SWUK lacks the RSTIN pin and associated internal comparator - confirmed by its 5-pin SOT23 package and pin description table.
MAX6354SWUK 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:
- 1.67V, 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
MAX6354SWUK FAQ
1.How can I place an order for MAX6354SWUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354SWUK 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 MAX6354SWUK reliable?
The price and inventory of MAX6354SWUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354SWUK is usually 5 days.
3.What payment methods are accepted for MAX6354SWUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354SWUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354SWUK?
MAX6354SWUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354SWUK 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 MAX6354SWUK?
For technical support, including MAX6354SWUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354SWUK requirements.
6.How does Aetrix verify that MAX6354SWUK is sourced from the original manufacturer or authorized distributors?
All MAX6354SWUK 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 MAX6354SWUK meets industry standards.
7.What is the process for return or replacement of MAX6354SWUK?
All MAX6354SWUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354SWUK, 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 MAX6354SWUK part is unused and in its original packaging.
Return procedure for MAX6354SWUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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