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Analog Devices Inc./Maxim Integrated MAX6354UWUK-T
- Part No.:
- MAX6354UWUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354UWUK-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6354UWUK-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 2.78V (VCC1) and 1.67V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC1 ≥ 1V or VCC2 ≥ 1V - used in multivoltage embedded systems to ensure reliable power-on and brownout reset sequencing.
For engineers reviewing the MAX6354UWUK-T datasheet, MAX6354UWUK-T pinout, MAX6354UWUK-T application, or MAX6354UWUK-T equivalent, key selection considerations include dual-supply threshold accuracy, reset timeout period (100–280ms), manual-reset debouncing, SOT23-5 package compatibility, and absence of watchdog timer functionality in this variant.
Technical Context
The MAX6354UWUK-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 (2.78V for VCC1, 1.67V for VCC2). Reset assertion persists as long as at least one supply remains ≥1.0V, enabling robust operation during asymmetric supply decay.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), 100ms minimum power-on-reset pulse width, and operates across –40°C to +85°C. Unlike MAX6358/MAX6359/MAX6360 variants, it lacks watchdog timer circuitry and third-voltage monitoring capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.78V ±0.08V (–40°C to +85°C); precise trip point for primary supply monitoring |
| VCC2 Threshold | 1.67V ±0.05V (–40°C to +85°C); accurate low-voltage rail supervision |
| Supply Current | 20µA typical; enables ultra-low-power system monitoring without burdening supply |
| Reset Timeout | 100–280ms; ensures sufficient processor initialization time after power stabilization |
| RESET Validity | Guaranteed down to VCC1 ≥ 1V or VCC2 ≥ 1V; supports deep brownout detection |
| Operating Temp | –40°C to +85°C; qualified for industrial and extended-temperature embedded use |
| Package | 5-pin SOT23; compact footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6354UWUK-T is housed in a 5-pin SOT23 package (package code U5-1), with exposed pad not electrically connected. 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 CMOS driver referenced to VCC2; drives low during fault or MR assertion |
| 2 (GND) | Ground reference | Common return path for internal comparators and output stage |
| 3 (MR) | Manual-reset input | Debounced TTL/CMOS-compatible input; pull low to force reset for ≥1µs |
| 4 (VCC2) | Secondary supply input | Power source and monitored rail; sets RST reference voltage and defines VTH2 = 1.67V |
| 5 (VCC1) | Primary supply input | Power source and monitored rail; defines VTH1 = 2.78V; powers internal logic when > VCC2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage precision monitoring | Factory-trimmed 2.78V/1.67V thresholds with ±0.08V max deviation over temperature |
| Low-quiescent-current operation | 20µA typical ICC enables battery-backed or energy-constrained applications |
| Robust reset timing | 100ms min POR pulse width ensures reliable µP initialization before release |
| Supply-transient immunity | Immune to short negative-going transients on VCC1/VCC2 per published characterization curves |
| No external components required | Self-contained dual-rail supervision eliminates need for discrete resistors or capacitors |
Applications
| Industrial PLC Power Sequencing | Portable Medical Sensor Node |
|---|---|
Use Scenario: A programmable logic controller uses separate 3.3V I/O and 1.8V core supplies requiring coordinated reset assertion during brownout. IC Role / Device Role / Timing Role: MAX6354UWUK-T monitors both rails and asserts RST referenced to VCC2 (1.8V domain) to synchronize reset across voltage domains. Use Value: Ensures deterministic state recovery by guaranteeing RST remains valid until both supplies fall below 1.0V, preventing partial initialization. | Use Scenario: A handheld glucose meter employs a 2.8V display supply and 1.65V MCU supply, where low-battery shutdown must trigger clean reset before voltage collapse. IC Role / Device Role / Timing Role: MAX6354UWUK-T provides early warning via 2.78V/1.67V thresholds, asserting RST before critical brownout thresholds are crossed. Use Value: 20µA quiescent current extends battery life; 100ms reset pulse ensures full MCU shutdown before supply depletion. |
| Automotive Body Control Module | Industrial IoT Gateway |
Use Scenario: A BCM uses 5V sensor interface and 2.5V microcontroller supply, subject to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: MAX6354UWUK-T supervises both rails independently and maintains valid RST output even if one supply dips momentarily below 1.0V. Use Value: Immunity to short VCC transients prevents spurious resets during automotive electrical events. | Use Scenario: An edge gateway integrates 3.3V Ethernet PHY and 1.2V FPGA core, requiring fail-safe reset coordination during thermal throttling or power cycling. IC Role / Device Role / Timing Role: MAX6354UWUK-T detects undervoltage on either rail and asserts RST referenced to the lower-voltage domain (VCC2 = 1.67V threshold) for safe FPGA state capture. Use Value: Push-pull RST eliminates need for external pull-up, reducing BOM count and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353UWUK-T | Same thresholds (2.78V/1.67V) but RST referenced to VCC1 instead of VCC2; identical pinout and package | Used when reset signal must be level-shifted to primary supply domain rather than secondary | Select MAX6353UWUK-T if system reset logic requires VCC1-referenced drive; otherwise MAX6354UWUK-T is optimal for VCC2-domain control |
| TPS3808G16DBVR | Single-supply supervisor (1.6V threshold only); no dual-rail monitoring; 350ms reset timeout; SOT23-5 package | Suitable only for single-rail systems; lacks VCC1/VCC2 cross-monitoring and supply-fallback validity | Choose TPS3808G16DBVR only for cost-sensitive single-voltage designs; MAX6354UWUK-T is required for true dual-rail coordination |
Compared with MAX6353UWUK-T, MAX6354UWUK-T delivers reset signaling referenced to the lower-voltage rail (VCC2), enabling direct interfacing with 1.67V logic domains without level translation; versus TPS3808G16DBVR, it provides essential dual-supply correlation and guaranteed operation down to 1V on either rail - critical for multivoltage reliability.
Availability
MAX6354UWUK-T is available at Aetrix Electronics and suitable for industrial PLC power sequencing, portable medical sensor nodes, automotive body control modules, and industrial IoT gateways requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6354UWUK-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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX6351–MAX6360 product line was designed specifically for multivoltage embedded systems requiring precise, low-power, dual-rail supervision with guaranteed reset validity across wide supply and temperature ranges.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354UWUK-T?
The MAX6354UWUK-T has a factory-set VCC1 threshold of 2.78V (±0.08V over –40°C to +85°C) and a VCC2 threshold of 1.67V (±0.05V over the same range), as defined by the "UW" suffix in the Voltage Threshold Levels table. These values are precision-trimmed during production and do not require external calibration.
Does the MAX6354UWUK-T include a watchdog timer function?
No, the MAX6354UWUK-T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the family. The MAX6354UWUK-T provides only dual-voltage monitoring, manual reset, and reset timing - confirmed by its pin configuration (no WDI pin) and functional description in the datasheet.
What is the reset output type and voltage reference for the MAX6354UWUK-T?
The MAX6354UWUK-T features a single active-low push-pull reset output (RST) referenced to VCC2, meaning its high-level output voltage is approximately VCC2 and its low-level output is <0.3V at 50µA sink current. This differs from MAX6353 variants, which reference RST to VCC1.
Can the MAX6354UWUK-T operate with supply voltages below 2.0V?
Yes - the MAX6354UWUK-T guarantees valid reset operation as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, and its specified operating range is VCC1/VCC2 = +1.2V to +5.5V (–40°C to +85°C). Its 1.67V VCC2 threshold and 1.0V validity floor make it suitable for modern low-voltage systems including 1.8V and 1.2V domains.
Is the MAX6354UWUK-T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6354UWUK-T uses the 5-pin SOT23 package and shares identical pinout with MAX6352/MAX6353/MAX6354 variants (RST, GND, MR, VCC2, VCC1). However, it is not functionally interchangeable with 6-pin variants (e.g., MAX6355–MAX6360) due to missing pins (RSTIN, WDI) and different internal feature sets - always verify pin mapping and functionality before substitution.
MAX6354UWUK-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:
- 1.67V, 2.78V
- 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
MAX6354UWUK-T FAQ
1.How can I place an order for MAX6354UWUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354UWUK-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 MAX6354UWUK-T reliable?
The price and inventory of MAX6354UWUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354UWUK-T is usually 5 days.
3.What payment methods are accepted for MAX6354UWUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354UWUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354UWUK-T?
MAX6354UWUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354UWUK-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 MAX6354UWUK-T?
For technical support, including MAX6354UWUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354UWUK-T requirements.
6.How does Aetrix verify that MAX6354UWUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6354UWUK-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 MAX6354UWUK-T meets industry standards.
7.What is the process for return or replacement of MAX6354UWUK-T?
All MAX6354UWUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354UWUK-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 MAX6354UWUK-T part is unused and in its original packaging.
Return procedure for MAX6354UWUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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