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Analog Devices Inc./Maxim Integrated MAX6384LT44D1+T
- Part No.:
- MAX6384LT44D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6384LT44D1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,713
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Product details
Overview
MAX6384LT44D1+T from Maxim Integrated is a low-power microprocessor supervisory circuit with factory-set 4.38V reset threshold, 1ms minimum VCC reset timeout, active-low push-pull reset output, and debounced manual reset input (MR). It monitors +1.8V to +5.0V supply rails in battery-powered controllers and portable instrumentation, asserting reset during brownout or power-up until VCC exceeds threshold and timeout expires.
For engineers reviewing the MAX6384LT44D1+T datasheet, MAX6384LT44D1+T pinout, MAX6384LT44D1+T application, or MAX6384LT44D1+T equivalent, key selection criteria include its 4.38V ±2.5% threshold accuracy over –40°C to +125°C, 3μA supply current at +1.8V, guaranteed valid reset state down to VCC = 1V, and 4-pin SC70 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6384LT44D1+T integrates a precision voltage comparator with ±2.5% threshold accuracy across temperature, a monostable timer for fixed 1ms reset assertion after VCC recovery, and an internal 63kΩ MR pullup resistor enabling direct switch connection without external components. Its push-pull active-low RESET output drives logic inputs directly without external pullups.
It operates across 1.0V to 5.5V VCC, guarantees correct reset logic state down to VCC = 1V, and provides immunity to negative-going VCC transients up to 35µs at 100mV overdrive. The device supports manual reset initiation via MR pin, with reset remaining asserted for the full 1ms timeout after MR release.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal, ±2.5% over –40°C to +125°C - ensures reliable detection of 4.5V rail brownout before µP malfunction. |
| VCC Reset Timeout | 1ms minimum - guarantees sufficient reset hold time for slow-ramping 3.3V/5V supplies during power-up. |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable medical devices. |
| Reset Output Type | Active-low push-pull - eliminates need for external pullup resistor, simplifying BOM and PCB layout. |
| Manual Reset Input | Debounced MR with 63kΩ internal pullup - allows direct connection to momentary switch; no external RC required. |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout conditions down to 1V VCC. |
| Reset Propagation Delay | 35µs max (VCC falling) - ensures fast response to supply glitches without false triggering on noise. |
Pinout & Package
MAX6384LT44D1+T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm, suitable for high-density portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and sets reset threshold reference. |
| 2 | RESET | Active-low push-pull output; sinks current when asserted, sources current when deasserted - directly interfaces with µP reset pin. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC; driving low forces immediate reset independent of VCC level. |
| 4 | GND | Analog and digital ground reference; must be connected to system ground plane for stable threshold and timing performance. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.38V threshold | Eliminates external resistor divider, reducing component count and board area in 4.5V system monitoring. |
| 1ms minimum reset timeout | Meets JEDEC JESD78B requirements for µP reset hold time during 3.3V/5V supply ramp-up. |
| 3μA supply current at +1.8V | Enables >10-year battery life in always-on wearable health monitors using CR2032 cells. |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic µP initialization even during severe undervoltage events before complete power collapse. |
| Integrated MR pullup resistor | Removes need for discrete 63kΩ resistor, cutting BOM cost and eliminating solder joint reliability risk. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous ECG monitoring in wrist-worn devices powered by rechargeable Li-ion cells. IC Role / Device Role / Timing Role: Supervises 3.3V analog front-end and BLE SoC supply; asserts reset if battery drops below 3.4V during discharge. Use Value: Prevents corrupted sensor data capture and firmware lockup during low-battery brownout, extending usable runtime per charge. |
Use Scenario: Environmental data collection in remote field deployments using AA alkaline batteries. IC Role / Device Role / Timing Role: Monitors 3.0V regulator output feeding MCU and flash memory; holds reset until stable post-battery insertion. Use Value: Eliminates boot failures caused by slow 3.0V rail rise time, ensuring first-power reliability without host intervention. |
| Industrial Handheld Controllers | Smart Home Sensor Hubs |
Use Scenario: Ruggedized HVAC control units subjected to 12V automotive battery fluctuations. IC Role / Device Role / Timing Role: Tracks 5.0V system rail derived from DC-DC converter; triggers reset on transient dips below 4.38V. Use Value: Maintains deterministic state recovery after engine cranking noise, preventing spurious relay actuation. |
Use Scenario: Zigbee-enabled occupancy sensors operating on CR2032 coin cells for 5+ years. IC Role / Device Role / Timing Role: Provides reset supervision for ultra-low-power MCU and RF transceiver; activates on 1.8V LDO dropout. Use Value: Guarantees clean boot sequence after cold start or battery replacement, avoiding missed motion detection windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR43D1+T | Same 4.30V threshold and 1ms timeout, but 3-pin SC70 package - lacks MR input. | Suitable only for systems requiring automatic reset only; cannot support user-initiated reset. | Select when manual reset is unnecessary and board space is constrained to 3-pin footprint. |
| TPS3808G33DBVR | 3.3V fixed threshold, 20ms timeout, 1.5μA quiescent current - different threshold and longer timeout. | Designed for 3.3V-only systems; longer timeout may delay boot in time-critical applications. | Choose for lower-power 3.3V µP supervision where 4.38V threshold is not required. |
Compared with MAX6384LT44D1+T, MAX6326XR43D1+T saves board area but removes manual reset capability, while TPS3808G33DBVR reduces current consumption by 50% yet sacrifices threshold accuracy and flexibility for 4.5V rail monitoring.
Availability
MAX6384LT44D1+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial handheld controllers, and smart home sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6384LT44D1+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 demanding industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy µP reset supervision for battery-operated and thermally harsh environments, emphasizing factory-trimmed thresholds, guaranteed operation down to 1V, and compact packaging.
FAQ
What is the exact reset threshold voltage of MAX6384LT44D1+T?
The MAX6384LT44D1+T has a nominal reset threshold of 4.38V, with guaranteed tolerance of ±2.5% over the full –40°C to +125°C operating temperature range. This value is factory-trimmed and does not require external calibration, making it suitable for precise 4.5V rail monitoring in industrial controllers and portable instrumentation where consistent brownout detection is critical.
Does MAX6384LT44D1+T support manual reset functionality?
Yes, MAX6384LT44D1+T includes a dedicated MR (manual reset) input with an internal 63kΩ pullup resistor. Driving MR low forces an immediate reset regardless of VCC level, and reset remains asserted for the full 1ms timeout period after MR is released. This enables reliable operator-initiated reset in handheld equipment and test fixtures without adding external components.
What package type and dimensions does MAX6384LT44D1+T use?
MAX6384LT44D1+T is packaged in a lead-free, RoHS-compliant 4-pin SC70 (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. Its small footprint and thermal resistance of 322.6°C/W (θJA, multilayer board) make it ideal for space-constrained portable electronics such as wearables and wireless sensors where board real estate is at a premium.
How does MAX6384LT44D1+T behave during deep brownout conditions?
MAX6384LT44D1+T guarantees valid reset output state down to VCC = 1V, meaning the RESET pin maintains correct logic levels (low when asserted, high when deasserted) even as supply voltage collapses. This ensures deterministic µP initialization during severe undervoltage events, unlike many supervisors that lose output control below 1.8V, thereby preventing undefined firmware behavior in safety-critical applications.
Is MAX6384LT44D1+T compatible with standard 3.3V or 5V microcontrollers?
Yes, MAX6384LT44D1+T is fully compatible with both 3.3V and 5V microcontrollers. Its 4.38V reset threshold is optimized for 4.5V system rails, and its push-pull active-low RESET output meets standard TTL/CMOS logic thresholds across 1.0V–5.5V VCC. The device drives typical µP reset pins directly without level-shifting or external pullups, simplifying interface design in mixed-voltage systems.
MAX6384LT44D1+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (1.5x1)
MAX6384LT44D1+T FAQ
1.How can I place an order for MAX6384LT44D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6384LT44D1+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 MAX6384LT44D1+T reliable?
The price and inventory of MAX6384LT44D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6384LT44D1+T is usually 5 days.
3.What payment methods are accepted for MAX6384LT44D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6384LT44D1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6384LT44D1+T?
MAX6384LT44D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6384LT44D1+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 MAX6384LT44D1+T?
For technical support, including MAX6384LT44D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6384LT44D1+T requirements.
6.How does Aetrix verify that MAX6384LT44D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6384LT44D1+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 MAX6384LT44D1+T meets industry standards.
7.What is the process for return or replacement of MAX6384LT44D1+T?
All MAX6384LT44D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6384LT44D1+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 MAX6384LT44D1+T part is unused and in its original packaging.
Return procedure for MAX6384LT44D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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