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Analog Devices Inc./Maxim Integrated MAX6354LSUK
- Part No.:
- MAX6354LSUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354LSUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,116
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Product details
Overview
MAX6354LSUK from Maxim Integrated is a dual-voltage microprocessor supervisory IC with active-low push-pull reset output referenced to VCC2, precision factory-set thresholds of 4.63V (VCC1) and 2.93V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC2 = 1.0V. It monitors two independent power rails in multivoltage embedded systems to ensure reliable µP reset during brownout or startup.
For engineers reviewing the MAX6354LSUK datasheet, MAX6354LSUK pinout, MAX6354LSUK application, or MAX6354LSUK equivalent, this device supports critical power sequencing validation, dual-rail fault detection in portable instrumentation, and low-quiescent-current supervision for battery-backed controllers.
Technical Context
The MAX6354LSUK implements dual independent voltage comparators with hysteresis, each monitoring one supply rail against its factory-trimmed threshold. Its reset generator asserts an active-low push-pull output tied to VCC2 when either VCC1 drops below 4.63V or VCC2 drops below 2.93V - with guaranteed operation as long as VCC2 ≥ 1.0V.
It includes a debounced TTL/CMOS-compatible manual reset input (MR), supports transient-immune operation against short negative-going VCC spikes, and delivers a minimum 100ms reset pulse width. No external components are required for basic dual-supply supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.13V over -40°C to +85°C - sets precise brownout detection point for primary supply |
| VCC2 Threshold | 2.93V ±0.08V over -40°C to +85°C - defines secondary supply fail-safe point referenced to reset output |
| Supply Current | 20µA typical at +25°C - enables ultra-low-power supervision in always-on battery systems |
| Reset Pulse Width | 100ms minimum - ensures sufficient duration for µP initialization and state clearing |
| RESET Validity Range | Valid down to VCC2 = 1.0V - guarantees functional reset assertion even during deep brownout |
| Reset Output Type | Active-low push-pull referenced to VCC2 - eliminates need for external pull-up and drives directly into µP reset pin |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
MAX6354LSUK is housed in a 5-pin SOT23 package (SOT23-5), with 1.6mm × 2.9mm footprint and 0.95mm height - compatible with standard high-density PCB assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low push-pull reset output | Referenced to VCC2; sinks 1.2mA at VCC2 ≥ 2.7V; valid down to VCC2 = 1.0V |
| 2 - GND | Ground reference | Common return path for both VCC1 and VCC2 monitoring circuits |
| 3 - MR | Debounced manual reset input | TTL/CMOS-compatible; active-low; internal 32–100kΩ pullup; 1µs minimum pulse width |
| 4 - VCC2 | Secondary supply input & reset reference | Powers internal circuitry when VCC2 > VCC1; monitored at 2.93V threshold; defines RST output rail |
| 5 - VCC1 | Primary supply input | Monitored at 4.63V threshold; powers internal circuitry when VCC1 > VCC2; must not exceed 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises two supplies with separate, factory-trimmed thresholds - eliminates discrete comparator + reference solutions |
| Push-pull reset referenced to VCC2 | Directly drives µP reset pin without external pull-up resistor - reduces BOM count and layout area |
| Guaranteed RESET validity to VCC2 = 1.0V | Ensures deterministic reset assertion during severe brownout - critical for nonvolatile memory write protection |
| 20µA ultra-low quiescent current | Enables multi-year battery life in always-on supervision applications such as smart sensors and RTUs |
| Power-supply transient immunity | Rejects sub-200ns negative transients on VCC1/VCC2 - prevents false resets in noisy industrial environments |
Applications
| Industrial PLC I/O Modules | Portable Medical Monitors |
|---|---|
Use Scenario: Monitoring 5V logic supply and 3.3V MCU core supply in DIN-rail mounted I/O modules subject to 24V field bus noise. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting reset to ARM Cortex-M4 when either rail falls outside tolerance - ensuring deterministic recovery after EFT bursts. Use Value: Prevents firmware corruption by guaranteeing 100ms minimum reset pulse while operating down to VCC2 = 1.0V during brownout events. | Use Scenario: Supervising lithium-ion battery-backed 3.3V system rail and 1.8V sensor interface rail in handheld ECG devices. IC Role / Device Role / Timing Role: Reset generator referenced to VCC2 (3.3V rail) that holds µP in reset until both supplies stabilize post-battery insertion. Use Value: Enables safe boot sequence with 20µA quiescent current - extending battery runtime between calibrations. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: Monitoring 5V infotainment domain supply and 3.3V microcontroller supply in junction box ECUs exposed to load-dump transients. IC Role / Device Role / Timing Role: Fault-tolerant supervisor providing VCC2-referenced reset to prevent erratic behavior during alternator ripple or cold-crank conditions. Use Value: Immunity to sub-200ns VCC transients avoids spurious resets - improving ASIL-B compliance confidence. | Use Scenario: Supervising isolated 3.3V metrology rail and 5V communication rail in ANSI C12.22-compliant meters with optical port and RF mesh. IC Role / Device Role / Timing Role: Dual-threshold supervisor ensuring secure boot before enabling secure element and HPLC modem initialization. Use Value: Factory-trimmed 4.63V/2.93V thresholds eliminate calibration overhead - reducing production test time and cost. |
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 | Reset output referenced to VCC1 instead of VCC2; same thresholds and package | Used where reset must track primary supply rail rather than secondary; incompatible if µP reset pin requires VCC2-referenced drive | Select MAX6353LSUK only when reset assertion timing must align with VCC1 stability, not VCC2 |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only); no VCC1/VCC2 dual monitoring; 350ms reset timeout vs. 100ms min | Requires external circuitry to supervise two rails; lacks dual-threshold architecture and VCC2-referenced output | Choose only for single-rail systems where dual monitoring is unnecessary and longer reset pulse is acceptable |
Compared with MAX6353LSUK, MAX6354LSUK provides VCC2-referenced reset essential for systems where the µP reset pin shares ground with the secondary supply domain; versus TPS3808G33DBVR, it delivers true dual-rail supervision without external components or timing compromises.
Availability
MAX6354LSUK is available at Aetrix Electronics and suitable for industrial control, portable medical instrumentation, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6354LSUK 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, automotive, communications, and computing applications.
The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor supervision - delivering factory-trimmed dual thresholds, ultra-low quiescent current, and robust reset generation in minimal SOT23 footprints.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354LSUK?
The MAX6354LSUK has a factory-set VCC1 threshold of 4.63V (±0.13V over -40°C to +85°C) and a VCC2 threshold of 2.93V (±0.08V over the same range). These values are defined by the "LS" suffix per Maxim's Voltage Threshold Levels table and are laser-trimmed during production - no external adjustment is needed. The MAX6354LSUK uses these precise points to assert its VCC2-referenced reset output when either supply violates its respective limit.
Does the MAX6354LSUK include a watchdog timer function?
No, the MAX6354LSUK does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the family. The MAX6354LSUK provides only dual-voltage monitoring with manual reset input and a single active-low push-pull reset output referenced to VCC2 - making it ideal for simpler supervision tasks where processor activity monitoring is handled separately.
Can the MAX6354LSUK operate with VCC1 and VCC2 supplied from different sources?
Yes, the MAX6354LSUK is explicitly designed for independent dual-supply operation: VCC1 and VCC2 may be derived from separate regulators or power domains. Its internal architecture guarantees reset assertion if either rail drops below its threshold, and the reset output remains valid as long as VCC2 ≥ 1.0V - regardless of VCC1 status. This makes the MAX6354LSUK suitable for systems with asymmetric power sequencing, such as FPGA+MCU platforms with staggered rail ramp-up.
What is the maximum supply voltage rating for the MAX6354LSUK?
The MAX6354LSUK has an absolute maximum supply rating of +6V for both VCC1 and VCC2 relative to GND, but its specified operational range is +1.2V to +5.5V. Operation above +5.5V risks exceeding internal comparator headroom and invalidating threshold accuracy. The MAX6354LSUK must not be used with supplies exceeding +5.5V under normal conditions - doing so voids parametric guarantees and may cause permanent damage per the Absolute Maximum Ratings table.
Is the MAX6354LSUK pin-compatible with other parts in the MAX6351–MAX6360 family?
The MAX6354LSUK uses the 5-pin SOT23-5 package and shares identical pinout with MAX6352/MAX6353/MAX6354 variants. However, pin compatibility does not imply functional equivalence: MAX6352 offers open-drain reset, MAX6353 provides VCC1-referenced push-pull reset, and only MAX6354LSUK delivers VCC2-referenced push-pull reset. Swapping without verifying reset reference rail and output type may cause system failure - always validate against the specific MAX6354LSUK pin configuration diagram.
MAX6354LSUK 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:
- 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 FAQ
1.How can I place an order for MAX6354LSUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354LSUK 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 reliable?
The price and inventory of MAX6354LSUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354LSUK is usually 5 days.
3.What payment methods are accepted for MAX6354LSUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354LSUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354LSUK?
MAX6354LSUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354LSUK 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?
For technical support, including MAX6354LSUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354LSUK requirements.
6.How does Aetrix verify that MAX6354LSUK is sourced from the original manufacturer or authorized distributors?
All MAX6354LSUK 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 meets industry standards.
7.What is the process for return or replacement of MAX6354LSUK?
All MAX6354LSUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354LSUK, 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 part is unused and in its original packaging.
Return procedure for MAX6354LSUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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