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Analog Devices Inc./Maxim Integrated MAX6354TYUK+
- Part No.:
- MAX6354TYUK+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6354TYUK+.pdf
- Description:
- MAX6354 DUAL-VOLTAGE MICROPROCES
- Quantity:
- Payment:
- Shipping:
Inventory:4,967
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Product details
Overview
MAX6354TYUK+ 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 3.08V (VCC1) and 2.19V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC2 = 1.0V. It monitors two independent power rails in multivoltage embedded systems such as industrial controllers and portable instrumentation.
For engineers reviewing the MAX6354TYUK+ datasheet, MAX6354TYUK+ pinout, MAX6354TYUK+ application, or MAX6354TYUK+ equivalent, key selection criteria include dual-supply threshold accuracy, reset timing integrity under brownout, manual reset debouncing, watchdog timer absence (this variant excludes WDI), and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6354TYUK+ implements independent voltage comparators for VCC1 and VCC2, asserting reset whenever either supply drops below its respective threshold. Its reset generator guarantees a minimum 100ms pulse width and maintains valid logic levels as long as VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - enabling robust operation during partial power loss.
No watchdog timer or third-voltage monitor is integrated; this variant belongs to the MAX6354 subgroup defined by single VCC2-referenced push-pull RST output, 5-pin SOT23 packaging, and absence of WDI/RSTIN pins. It shares the family's 20ppm/°C reset threshold tempco and 100ns MR glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.08V ±30mV over -40°C to +85°C - ensures reliable detection of +3.3V rail undervoltage |
| VCC2 Threshold | 2.19V ±30mV over -40°C to +85°C - matches common +2.5V or +2.2V auxiliary rail requirements |
| Supply Current | 20µA typical at +25°C - enables battery-backed operation for >10 years in low-power systems |
| Reset Pulse Width | 100ms minimum - satisfies µP reset hold-time requirements across all supported temperature ranges |
| RESET Output Type | Active-low push-pull referenced to VCC2 - eliminates external pull-up and supports direct interface to VCC2-domain logic |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Reset Validity | Guaranteed while VCC2 ≥ 1.0V - maintains reset assertion during deep brownout of monitored supply |
Pinout & Package
MAX6354TYUK+ is housed in a 5-pin SOT23 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 1.0mm height. Pin 1 is RST (active-low push-pull, referenced to VCC2), Pin 2 is GND, Pin 3 is MR (debounced manual reset input), Pin 4 is VCC2 (monitored and powered supply), and Pin 5 is VCC1 (monitored and powered supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (RST) | Active-low reset output | Push-pull driver referenced to VCC2; sinks 1.2mA at VCC2 ≥ 2.7V; no external pull-up required |
| Pin 2 (GND) | Ground reference | Common return for both supply monitors and reset logic; must be low-impedance connection |
| Pin 3 (MR) | Manual reset input | Debounced TTL/CMOS-compatible input; asserted low forces reset; internal 32–100kΩ pullup |
| Pin 4 (VCC2) | Primary monitored supply | Power source and voltage monitor input; reset asserted if VCC2 falls below 2.19V; powers RST output stage |
| Pin 5 (VCC1) | Secondary monitored supply | Power source and voltage monitor input; reset asserted if VCC1 falls below 3.08V; enables reset validity down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous 3.08V and 2.19V thresholds with ±30mV tolerance over full temperature range |
| VCC2-referenced push-pull RST | Eliminates need for external pull-up resistor and ensures clean, rail-to-rail reset signaling in VCC2 domain |
| Low quiescent current | 20µA typical enables integration into always-on subsystems without compromising battery life |
| Guaranteed reset validity to 1.0V | Ensures deterministic reset behavior even during severe VCC2 brownout conditions |
| Debounced manual reset input | 1µs minimum MR pulse width and 100ns glitch rejection prevent spurious resets from noisy switch inputs |
Applications
| Industrial PLC I/O Modules | Portable Medical Sensors |
|---|---|
|
Use Scenario: Monitoring +3.3V microcontroller core supply and +2.2V analog front-end supply in battery-powered diagnostic equipment. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting active-low reset to MCU and ADC when either rail sags below specification during battery discharge. Use Value: Prevents corrupted sensor readings and firmware crashes by enforcing clean power-on and brownout recovery sequences. |
Use Scenario: Ensuring safe startup and fault response in handheld ECG monitors with separate digital and analog voltage domains. IC Role / Device Role / Timing Role: Generating 100ms minimum reset pulse synchronized to VCC2 (analog supply) to guarantee stable biasing before signal acquisition begins. Use Value: Eliminates false triggers and data corruption during low-battery operation where VCC2 may dip transiently below nominal. |
| Automotive Body Control Units | Smart Energy Meters |
|
Use Scenario: Supervising +3.3V infotainment SoC supply and +2.2V CAN transceiver supply in harsh automotive environments. IC Role / Device Role / Timing Role: Providing VCC2-referenced reset to ensure CAN PHY remains held in reset until analog supply stabilizes post-ignition. Use Value: Avoids bus contention and protocol errors caused by premature CAN initialization during cold-crank voltage sag. |
Use Scenario: Monitoring +3.3V metering ASIC supply and +2.2V RTC backup supply in utility-grade electricity meters with long-term reliability requirements. IC Role / Device Role / Timing Role: Asserting reset to metering controller only when both supplies exceed their precise thresholds, preventing partial initialization. Use Value: Guarantees EEPROM write integrity and timekeeping continuity by enforcing strict dual-rail power validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353TYUK+ | Identical thresholds (3.08V/2.19V) but RST output referenced to VCC1 instead of VCC2; same SOT23-5 package | Requires reset load connected to VCC1 domain; unsuitable when reset must track VCC2 rail stability | Select MAX6353TYUK+ only if system reset logic resides in VCC1 voltage domain |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no dual-threshold capability; 6-pin SOT23 package | Cannot monitor two independent rails simultaneously; requires additional circuitry for dual-voltage supervision | Choose TPS3808G33DBVR only for single-rail systems where cost or footprint permits adding discrete monitoring |
Compared with MAX6354TYUK+, MAX6353TYUK+ offers identical voltage thresholds but shifts reset referencing to VCC1 - limiting use in VCC2-critical applications - while TPS3808G33DBVR reduces functionality to single-rail monitoring, increasing BOM count and layout complexity for dual-supply designs.
Availability
MAX6354TYUK+ is available at Aetrix Electronics and suitable for industrial control systems, portable medical devices, automotive body electronics, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6354TYUK+ 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 markets.
The MAX6351–MAX6360 family delivers precision dual- and triple-voltage supervision for multirail embedded systems, emphasizing low power, guaranteed reset validity, and robust noise immunity in harsh operating environments.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6354TYUK+?
The MAX6354TYUK+ has a factory-set VCC1 threshold of 3.08V (±30mV over -40°C to +85°C) and a VCC2 threshold of 2.19V (±30mV over the same range). These values are confirmed in the Voltage Threshold Levels table and Electrical Characteristics section of the official datasheet, and they define the precise trip points at which the device asserts its active-low RST output.
Does the MAX6354TYUK+ include a watchdog timer function?
No, the MAX6354TYUK+ does not include a watchdog timer. It belongs to the MAX6354 subgroup, which is explicitly defined in the datasheet as lacking WDI functionality. Watchdog capability is only present in MAX6358/MAX6359/MAX6360 variants - the MAX6354TYUK+ provides pure dual-voltage supervision with manual reset only.
What is the output configuration of the RST pin on the MAX6354TYUK+?
The RST pin on the MAX6354TYUK+ is an active-low push-pull output referenced to VCC2. This means it actively drives low (to GND) and actively drives high (to VCC2), eliminating the need for an external pull-up resistor and ensuring full rail-to-rail signaling compatible with VCC2-domain logic interfaces.
Can the MAX6354TYUK+ operate with supply voltages below 2.0V?
Yes, the MAX6354TYUK+ guarantees valid reset operation as long as VCC2 ≥ 1.0V or VCC1 ≥ 1.0V. Its reset output remains functional down to 1.0V on either supply rail, and its supply current remains stable at 20µA typical even at VCC1 = VCC2 = 1.2V - making it suitable for brownout detection in low-voltage systems.
Which package type and pin count does the MAX6354TYUK+ use?
The MAX6354TYUK+ uses a 5-pin SOT23 package (JEDEC MO-178AA), with pinout: Pin 1 = RST (VCC2-referenced), Pin 2 = GND, Pin 3 = MR, Pin 4 = VCC2, Pin 5 = VCC1. This compact 1.3mm × 2.9mm footprint is optimized for space-constrained PCB layouts in portable and industrial electronics.
MAX6354TYUK+ 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:
- 2.19V, 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
MAX6354TYUK+ FAQ
1.How can I place an order for MAX6354TYUK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6354TYUK+ 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 MAX6354TYUK+ reliable?
The price and inventory of MAX6354TYUK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6354TYUK+ is usually 5 days.
3.What payment methods are accepted for MAX6354TYUK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6354TYUK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6354TYUK+?
MAX6354TYUK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6354TYUK+ 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 MAX6354TYUK+?
For technical support, including MAX6354TYUK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6354TYUK+ requirements.
6.How does Aetrix verify that MAX6354TYUK+ is sourced from the original manufacturer or authorized distributors?
All MAX6354TYUK+ 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 MAX6354TYUK+ meets industry standards.
7.What is the process for return or replacement of MAX6354TYUK+?
All MAX6354TYUK+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6354TYUK+, 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 MAX6354TYUK+ part is unused and in its original packaging.
Return procedure for MAX6354TYUK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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