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Analog Devices Inc./Maxim Integrated MAX6354LTUK+
- Part No.:
- MAX6354LTUK+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354LTUK+.pdf
- Description:
- MAX6354 DUAL-VOLTAGE MICROPROCES
- Quantity:
- Payment:
- Shipping:
Inventory:4,032
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Product details
Overview
MAX6354LTUK+ 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 3.08V (VCC2), 20µA supply current, 100ms minimum power-on reset pulse width, and guaranteed operation from -40°C to +85°C in SOT23-5 package. It monitors two independent supply rails in multivoltage systems such as embedded controllers and portable instrumentation.
For engineers reviewing the MAX6354LTUK+ datasheet, MAX6354LTUK+ pinout, MAX6354LTUK+ application, or MAX6354LTUK+ equivalent, key selection criteria include dual-supply threshold accuracy, VCC2-referenced reset assertion, low quiescent current, transient-immune reset timing, and compatibility with battery-backed or industrial-grade power sequencing requirements.
Technical Context
The MAX6354LTUK+ implements dual independent voltage comparators with hysteresis, each monitoring one supply rail (VCC1 and VCC2) against its factory-trimmed threshold. Reset assertion occurs if either supply drops below its respective trip point, and the active-low reset output remains valid as long as at least one supply exceeds +1.0V.
It features debounced TTL/CMOS-compatible manual reset input (MR), no external components required for dual-rail supervision, and power-supply transient immunity validated up to 250µs at 0.5V overdrive. Unlike watchdog-equipped variants (e.g., MAX6359/MAX6360), the MAX6354LTUK+ omits WDI functionality and third-voltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.13V (guaranteed over -40°C to +85°C); sets primary supply fault detection level |
| VCC2 Threshold | 3.08V ±0.15V (guaranteed over -40°C to +85°C); defines secondary supply fault detection level |
| Reset Pulse Width | 100ms minimum; ensures reliable µP initialization across all operating conditions |
| Supply Current | 20µA typical at +25°C; enables long battery life in portable equipment |
| Operating Temp | -40°C to +85°C; supports industrial and extended-temperature embedded deployments |
| Reset Output Type | Active-low push-pull referenced to VCC2; eliminates need for external pull-up resistor |
| MR Input Compatibility | TTL/CMOS-debounced; accepts standard logic-level manual reset signals without external filtering |
Pinout & Package
MAX6354LTUK+ is housed in a 5-pin SOT23-5 package with exposed pad (not electrically connected), footprint compatible with JEDEC MO-178AA, and rated for surface-mount reflow assembly.
| 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, outputs valid down to VCC2 = 1.0V |
| 2 - GND | Ground reference | Common return path for internal comparators, MR input, and reset driver |
| 3 - MR | Manual reset input | Debounced active-low input; forces reset when pulled ≤0.8V (for LT suffix), valid as long as MR is low |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when VCC2 > VCC1; monitored at 3.08V threshold |
| 5 - VCC1 | Primary supply input | Monitored at 4.63V threshold; powers device when VCC1 > VCC2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of two distinct supply rails (e.g., +5V and +3.3V) with separate, factory-trimmed thresholds |
| VCC2-referenced reset output | Eliminates level-shifting requirements when interfacing with peripherals powered by VCC2 |
| Guaranteed reset validity to 1.0V | Ensures clean reset assertion even during brownout or deep discharge conditions on either supply |
| No external components needed | Enables compact, low-BOM-cost supervision in space-constrained multivoltage systems |
| Power-supply transient immunity | Immune to transients ≤250µs duration at 0.5V overdrive, preventing false resets in noisy environments |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Supervising dual-rail power domains (e.g., +5V analog front-end and +3.3V digital core) in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting active-low reset to both microcontroller and FPGA upon any supply droop, with timing guaranteed over full industrial temperature range. Use Value: Prevents firmware corruption and state machine lockup during line transients or hot-swap events by enforcing synchronized reset across heterogeneous voltage domains. | Use Scenario: Power sequencing and fault detection in handheld ECG or pulse oximeter units powered by single-cell Li-ion batteries with DC-DC converters generating +3.3V and +5V rails. IC Role / Device Role / Timing Role: Monitoring battery-derived VCC1 (5V) and regulated VCC2 (3.3V) to trigger system-wide reset before critical brownout thresholds are crossed. Use Value: Extends usable battery runtime by enabling operation down to 1.0V on either rail while maintaining deterministic reset behavior under dynamic load changes. |
| Network Edge Routers | Automotive Infotainment Modules |
Use Scenario: Ensuring reliable boot integrity in multi-core networking SoCs where separate I/O and core voltages must be validated prior to execution. IC Role / Device Role / Timing Role: Providing 100ms minimum reset pulse width referenced to the I/O supply (VCC2), guaranteeing sufficient time for PLL lock and memory initialization. Use Value: Eliminates boot failures caused by marginal supply ramp rates or cross-coupling between adjacent voltage domains during cold start. | Use Scenario: Supervising dual supplies in automotive-grade infotainment head units subjected to wide ambient temperature swings and load-dump transients. IC Role / Device Role / Timing Role: Detecting undervoltage on main 5V domain (VCC1) and 3.3V MCU domain (VCC2), asserting reset referenced to VCC2 to match processor reset input requirements. Use Value: Meets AEC-Q100 stress test requirements for reset reliability under thermal cycling and electrical fast transients (EFT). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353LTUK+ | Reset output referenced to VCC1 (not VCC2); same thresholds (4.63V/3.08V), same package and temp range | Suitable when reset signal must track primary supply (VCC1) rather than secondary (VCC2) | Select MAX6353LTUK+ only if system reset logic is powered by VCC1 and requires VCC1-referenced assertion |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no dual-threshold capability; 1.8–6V supply range; 350nA quiescent current | Lacks dual-rail monitoring; requires external circuitry to supervise two supplies | Use TPS3808G33DBVR only for single-rail systems or when paired with a second supervisor for full dual-voltage coverage |
Compared with MAX6354LTUK+, MAX6353LTUK+ provides identical threshold accuracy and timing but references reset to VCC1-making it unsuitable where VCC2-powered peripherals require reset coordination. TPS3808G33DBVR offers ultra-low power but cannot replace dual-monitoring functionality without added components and design complexity.
Availability
MAX6354LTUK+ is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, network edge routers, and automotive infotainment modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6354LTUK+ 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 semiconductor solutions for industrial, communications, computing, and consumer applications.
The MAX6351–MAX6360 family delivers precision dual- and triple-voltage supervision for multirail embedded systems, emphasizing threshold accuracy, low power, and robust reset timing under real-world supply disturbances.
FAQ
What is the reset output configuration of the MAX6354LTUK+?
The MAX6354LTUK+ features a single active-low push-pull reset output (RST) referenced to VCC2. This means the output drives low relative to the VCC2 supply rail and does not require an external pull-up resistor. The output remains valid as long as VCC2 ≥ 1.0V, and it sinks ≥1.2mA when VCC2 ≥ 2.7V. This configuration ensures direct compatibility with VCC2-powered microcontrollers and peripherals without level-shifting circuitry.
Does the MAX6354LTUK+ include a watchdog timer function?
No, the MAX6354LTUK+ does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6354LTUK+ is a dedicated dual-voltage supervisor with manual reset (MR) input and no WDI pin. Its pinout (SOT23-5) lacks the sixth pin required for WDI, confirming absence of watchdog capability in this specific variant.
What are the exact voltage thresholds for the MAX6354LTUK+?
The MAX6354LTUK+ has factory-set voltage thresholds of 4.63V (VCC1) and 3.08V (VCC2), as indicated by the "LT" suffix per Maxim's Voltage Threshold Levels table. These values are guaranteed over the full -40°C to +85°C operating range, with tolerances of ±0.13V for VCC1 and ±0.15V for VCC2. The thresholds are trimmed during production and do not require external resistors or calibration.
Can the MAX6354LTUK+ monitor three voltage rails?
No, the MAX6354LTUK+ monitors exactly two voltage rails: VCC1 and VCC2. Third-rail monitoring (via RSTIN pin) is only available in the MAX6355/MAX6356/MAX6357 variants, which use a 6-pin SOT23-6 package and feature an adjustable comparator input. The MAX6354LTUK+ uses a 5-pin SOT23-5 package and has no RSTIN pin-its functionality is strictly dual-supply supervision without expandability.
Is the MAX6354LTUK+ pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6354LTUK+ shares the 5-pin SOT23-5 package with MAX6352, MAX6353, and MAX6354 variants, but pin functions differ across subtypes. Specifically, MAX6352 offers open-drain RST, MAX6353 provides VCC1-referenced push-pull RST, and MAX6354LTUK+ delivers VCC2-referenced push-pull RST. While physical footprint matches, electrical interface and reset referencing are not interchangeable-direct substitution requires verification of reset rail alignment and drive strength requirements in the target design.
MAX6354LTUK+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 3.08V, 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
MAX6354LTUK+ FAQ
1.How can I place an order for MAX6354LTUK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354LTUK+ 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 MAX6354LTUK+ reliable?
The price and inventory of MAX6354LTUK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354LTUK+ is usually 5 days.
3.What payment methods are accepted for MAX6354LTUK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354LTUK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354LTUK+?
MAX6354LTUK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354LTUK+ 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 MAX6354LTUK+?
For technical support, including MAX6354LTUK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354LTUK+ requirements.
6.How does Aetrix verify that MAX6354LTUK+ is sourced from the original manufacturer or authorized distributors?
All MAX6354LTUK+ 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 MAX6354LTUK+ meets industry standards.
7.What is the process for return or replacement of MAX6354LTUK+?
All MAX6354LTUK+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354LTUK+, 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 MAX6354LTUK+ part is unused and in its original packaging.
Return procedure for MAX6354LTUK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6354LTUK+ Tags
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MIC826SYMT-TR
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