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Analog Devices Inc./Maxim Integrated MAX6354TZUK-T
- Part No.:
- MAX6354TZUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354TZUK-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6354TZUK-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 3.08V (VCC1) and 2.32V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC1 or VCC2 ≥ 1.0V - used in multivoltage embedded systems requiring reliable power-on reset and supply monitoring.
For engineers reviewing the MAX6354TZUK-T datasheet, MAX6354TZUK-T pinout, MAX6354TZUK-T application, or MAX6354TZUK-T equivalent, key selection criteria include dual-supply threshold accuracy, reset timing integrity across temperature, manual-reset debouncing, and compatibility with 5-pin SOT23 layout constraints in space-constrained industrial controllers.
Technical Context
The MAX6354TZUK-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 (3.08V for VCC1, 2.32V for VCC2). Reset remains valid as long as at least one supply exceeds +1.0V, enabling robust operation during brownout transitions.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), supports supply transient immunity up to 100µs at 100mV overdrive, and guarantees 100ms minimum reset pulse width. Unlike watchdog-equipped variants (e.g., MAX6359/MAX6360), MAX6354TZUK-T lacks WDI functionality - confirmed by device family mapping and pin configuration data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.08V ±0.08V (–40°C to +85°C); ensures precise reset assertion for +3.3V rail monitoring |
| VCC2 Threshold | 2.32V ±0.07V (–40°C to +85°C); enables accurate supervision of +2.5V or +2.3V auxiliary supplies |
| Supply Current | 20µA typical (VCC1=5.5V, VCC2=3.6V); minimizes quiescent load in battery-backed systems |
| Reset Pulse Width | 100–280ms; meets μP reset hold-time requirements across full temperature range |
| Operating Temp | –40°C to +85°C; qualified for industrial-grade embedded control environments |
| Package | 5-pin SOT23; footprint-compatible with standard high-density PCB layouts |
| RESET Validity | Guaranteed down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; maintains system safety during deep brownouts |
Pinout & Package
MAX6354TZUK-T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5-1), with 1.3mm × 2.1mm footprint and 0.95mm height - optimized for compact industrial and portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low push-pull reset output referenced to VCC2 | Drives low without external pull-up; directly interfaces with μP reset pins requiring VCC2-referenced logic levels |
| 2 - GND | Ground reference | Common return path for both monitored supplies and internal circuitry; must be low-impedance |
| 3 - MR | Debounced manual-reset input | Pull low to force reset; internally debounced to reject <100ns glitches; requires no external RC network |
| 4 - VCC2 | Secondary supply input and monitor rail | Power source and voltage threshold reference point (2.32V); powers internal comparators when VCC2 > VCC1 |
| 5 - VCC1 | Primary supply input and monitor rail | Power source and voltage threshold reference point (3.08V); powers internal circuitry when VCC1 > VCC2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC1 (3.08V) and VCC2 (2.32V) with separate trip points - eliminates need for discrete comparators in dual-rail systems |
| Push-pull RST referenced to VCC2 | Provides rail-consistent reset signaling for peripherals powered by VCC2, avoiding level-shifter requirements |
| 20µA ultra-low supply current | Enables use in always-on subsystems (e.g., real-time clocks, backup controllers) without compromising battery life |
| 100ms min reset pulse width | Guarantees sufficient hold time for all common microprocessors, including ARM Cortex-M and legacy 8051 derivatives |
| Valid RESET down to 1.0V supply | Maintains deterministic reset state during severe brownout conditions where supplies dip near cutoff |
Applications
| Industrial PLC I/O Modules | Medical Diagnostic Handhelds |
|---|---|
Use Scenario: Monitoring +3.3V main logic rail and +2.3V sensor interface rail in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops below specification, ensuring deterministic firmware boot after power recovery. Use Value: Prevents partial initialization and memory corruption during unstable AC line conditions - validated over –40°C to +85°C operating range. | Use Scenario: Supervising battery-backed +3.08V MCU core supply and +2.32V analog front-end supply in portable ultrasound devices. IC Role / Device Role / Timing Role: Generating clean, rail-referenced reset signal to guarantee synchronized startup of digital and analog subsystems upon battery insertion. Use Value: Eliminates need for external voltage dividers or discrete reset ICs - reduces BOM count and improves field reliability. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: Monitoring +3.3V infotainment domain controller supply and +2.3V CAN transceiver supply in non-safety-critical vehicle modules. IC Role / Device Role / Timing Role: Providing fail-safe reset coordination between domains during cold-cranking voltage sag (down to 6V battery). Use Value: Ensures consistent reset behavior across supply transients - critical for ECU interoperability and diagnostic readiness. | Use Scenario: Supervising +3.08V metering SoC supply and +2.32V RTC/backup SRAM supply in ANSI C12.20-certified electricity meters. IC Role / Device Role / Timing Role: Enabling reliable power-on reset and brownout detection without external components - meeting long-term storage and rapid wake-up requirements. Use Value: Supports 10-year field lifetime with <20µA quiescent current and guaranteed performance at +85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353TZUK-T | Same package and thresholds, but RST output referenced to VCC1 instead of VCC2 | Suitable when reset must track primary supply rail rather than secondary rail | Select MAX6353TZUK-T only if system reset logic requires VCC1-referenced signaling |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no VCC2 monitoring or dual-threshold capability | Limited to single-rail systems; lacks multivoltage coordination | Use TPS3808G33DBVR only when monitoring one supply and board area permits separate supervisors per rail |
Compared with MAX6353TZUK-T, MAX6354TZUK-T provides VCC2-referenced reset essential for peripherals powered by the secondary rail; versus TPS3808G33DBVR, it delivers true dual-supply coordination in a single IC - reducing component count and inter-rail timing uncertainty.
Availability
MAX6354TZUK-T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical handheld diagnostics, automotive body control units, smart energy meters, and multivoltage embedded systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6354TZUK-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 precision analog and mixed-signal ICs for industrial, automotive, and computing applications - with emphasis on reliability, low power, and integration.
The MAX6351–MAX6360 product line delivers dual- and triple-voltage microprocessor supervisors targeting multirail embedded systems where coordinated power sequencing and brownout resilience are critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354TZUK-T?
The MAX6354TZUK-T has a factory-trimmed VCC1 threshold of 3.08V (±0.08V over –40°C to +85°C) and a VCC2 threshold of 2.32V (±0.07V over the same range). These values are confirmed in the Voltage Threshold Levels table and Electrical Characteristics section of the official datasheet, and correspond to the "TZ" suffix in the ordering guide.
Does the MAX6354TZUK-T include a watchdog timer function?
No, the MAX6354TZUK-T does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants, as explicitly stated in the General Description and Selector Guide. The MAX6354TZUK-T provides only dual-voltage monitoring and manual reset - verified by pin configuration (no WDI pin) and functional block diagram.
What is the output type and drive capability of the RST pin on the MAX6354TZUK-T?
The RST pin on the MAX6354TZUK-T is an active-low push-pull output referenced to VCC2. It sinks 1.2mA at ≤0.3V when VCC2 ≥ 2.7V, and sources 350µA at ≥0.8×VCC2 when VCC2 > VTH2(MAX), per Electrical Characteristics. This eliminates need for external pull-up resistors in most designs.
Can the MAX6354TZUK-T operate with supply voltages below 1.2V?
The MAX6354TZUK-T guarantees operation only down to VCC1 or VCC2 = 1.2V over the full temperature range (–40°C to +85°C), though RESET output remains valid as low as 1.0V. Operation below 1.2V is not characterized or guaranteed - confirmed by Absolute Maximum Ratings and Electrical Characteristics tables specifying 1.2V minimum under temperature conditions.
Is the MAX6354TZUK-T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6354TZUK-T uses the 5-pin SOT23 package shared with MAX6352/MAX6353/MAX6354 variants, and shares identical pinout (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 reset referencing - confirmed by Pin Configurations and Selector Guide.
MAX6354TZUK-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:
- 2.32V, 3.08V
- 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
MAX6354TZUK-T FAQ
1.How can I place an order for MAX6354TZUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354TZUK-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 MAX6354TZUK-T reliable?
The price and inventory of MAX6354TZUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354TZUK-T is usually 5 days.
3.What payment methods are accepted for MAX6354TZUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354TZUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354TZUK-T?
MAX6354TZUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354TZUK-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 MAX6354TZUK-T?
For technical support, including MAX6354TZUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354TZUK-T requirements.
6.How does Aetrix verify that MAX6354TZUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6354TZUK-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 MAX6354TZUK-T meets industry standards.
7.What is the process for return or replacement of MAX6354TZUK-T?
All MAX6354TZUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354TZUK-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 MAX6354TZUK-T part is unused and in its original packaging.
Return procedure for MAX6354TZUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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