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Analog Devices Inc./Maxim Integrated MAX6384XS44D3
- Part No.:
- MAX6384XS44D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6384XS44D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,545
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Product details
Overview
MAX6384XS44D3 from Maxim Integrated is a low-power microprocessor supervisory circuit with factory-set 4.38V reset threshold, 140ms 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 embedded controllers and ensures reliable power-on reset sequencing for critical µP systems.
For engineers reviewing the MAX6384XS44D3 datasheet, MAX6384XS44D3 pinout, MAX6384XS44D3 application, or MAX6384XS44D3 equivalent, key selection criteria include its ±2.5% reset threshold accuracy over -40°C to +125°C, guaranteed valid reset output down to VCC = 1V, 3µA supply current at +1.8V, and SC70-4 package compatibility with space-constrained portable designs.
Technical Context
This device implements a precision voltage comparator with internal 1.27V reference for threshold detection, paired with a temperature-stable monostable timer for reset assertion timing. Its MR input features an internal 63kΩ pullup resistor and 1µs minimum pulse width requirement, enabling direct connection to momentary switches without external debounce components.
The push-pull active-low RESET output drives logic-compatible loads with VOL ≤ 0.3V at ISINK = 80µA (VCC ≥ 1.0V), while maintaining guaranteed state validity across the full 1.0V–5.5V operating range - critical for brownout resilience in low-voltage microcontroller applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal (±2.5% over -40°C to +125°C) - sets precise power-fail detection point for +4.5V system rails |
| VCC Reset Timeout | 140ms minimum - ensures µP remains held in reset long enough for stable clock and supply settling |
| Supply Current | 3µA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion during deep brownout conditions down to near-zero VCC |
| MR Pullup Resistor | 63kΩ internal - eliminates need for external pullup, simplifying BOM and PCB layout |
| Reset Output Type | Active-low push-pull - provides rail-to-rail drive capability without external pullup resistor |
| Package | SC70-4 (1.3mm × 1.1mm × 0.95mm) - fits high-density portable electronics with minimal board area |
Pinout & Package
MAX6384XS44D3 uses the 4-pin SC70 package (X4-1 code), measuring 1.3mm × 1.1mm × 0.95mm with gull-wing leads. Pin 1 is RESET (active-low push-pull), Pin 2 is VCC, Pin 3 is MR (manual reset input), and Pin 4 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output - asserts low during power failure or MR activation; deasserts after timeout |
| 2 | VCC | Main supply input and monitored voltage rail - powers internal circuitry and serves as primary reset trigger source |
| 3 | MR | Active-low manual reset input - initiates reset when pulled low; internally pulled up to VCC via 63kΩ resistor |
| 4 | GND | Ground reference - provides return path for all internal currents and establishes voltage reference for comparator |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.38V with ±2.5% tolerance over full industrial temperature range - eliminates external resistor divider calibration |
| Debounced manual reset input | Internal 1µs glitch rejection and 63kΩ pullup - enables direct switch interface without RC network or firmware debounce |
| Low-voltage reset guarantee | Valid RESET output state maintained down to VCC = 1.0V - prevents spurious release during brownout recovery |
| Negative-going transient immunity | Rejects VCC glitches < 35µs duration at 100mV overdrive - improves robustness in electrically noisy environments |
| Ultra-low quiescent current | 3µA at +1.8V - extends battery life in always-on monitoring applications by >10× versus legacy reset ICs |
Applications
| Industrial PLC I/O Modules | Medical Wearable Sensors |
|---|---|
Use Scenario: Power management in DIN-rail mounted programmable logic controller modules with dual 24V/5V rails. IC Role / Device Role / Timing Role: Monitors 5V logic supply and asserts reset if voltage drops below 4.38V during line transients or load switching. Use Value: Prevents firmware corruption during 140ms power interruption windows common in factory floor EMI environments. | Use Scenario: Continuous glucose monitor with CR2032 coin cell powering ultra-low-power MCU and analog front-end. IC Role / Device Role / Timing Role: Provides power-on reset and manual reset via tactile button, using internal MR pullup to minimize component count. Use Value: Enables 3µA standby current draw and guarantees reset hold until 5V rail stabilizes post-battery insertion. |
| Automotive Body Control Units | Smart Home Hub Gateways |
Use Scenario: Reset supervision for 3.3V microcontroller in door module exposed to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Detects brownout on 3.3V domain and holds µP in reset for 140ms after voltage recovers above 4.38V threshold. Use Value: Eliminates need for external voltage divider while meeting AEC-Q100 Grade 2 temperature requirements (-40°C to +105°C). | Use Scenario: Wi-Fi/BLE gateway with dual-core application processor and real-time co-processor requiring synchronized reset. IC Role / Device Role / Timing Role: Generates clean, glitch-free active-low reset signal with 140ms timeout to coordinate boot sequence across multiple voltage domains. Use Value: Push-pull output drives both processors directly without level-shifting, reducing BOM cost and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR44D3+ | Same 4.38V threshold and 140ms timeout, but no MR input and SC70-3 package | Lacks manual reset functionality; requires external switch circuit if user-initiated reset needed | Select when board space is constrained and manual reset is unnecessary |
| TPS3808G33DBVR | 3.3V threshold (not 4.38V), 200ms timeout, 1.8V–6.0V operation, SOT-23-5 package | Requires external pullup on MR pin; different threshold invalidates direct replacement in +4.5V systems | Choose only after recalculating system reset margin and modifying PCB layout for 5-pin footprint |
Compared with MAX6384XS44D3, MAX6326XR44D3+ saves board area but removes MR functionality, while TPS3808G33DBVR offers wider voltage range but mismatches the required 4.38V threshold and demands layout changes - making MAX6384XS44D3 optimal for compact, manually resettable +4.5V systems.
Availability
MAX6384XS44D3 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical wearable sensors, automotive body control units, and smart home hub gateways requiring stable component supply and long-term production continuity.
Supply support for MAX6384XS44D3 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, medical, and communications applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy µP supervisory circuits optimized for battery-operated and space-constrained embedded systems requiring guaranteed reset behavior across wide temperature and voltage ranges.
FAQ
What is the exact reset threshold voltage of MAX6384XS44D3?
The MAX6384XS44D3 has a factory-set nominal reset threshold of 4.38V, with ±2.5% accuracy guaranteed over the full -40°C to +125°C operating temperature range. This value corresponds to the "44" suffix in the part number and is verified per Maxim's Electrical Characteristics table under VTH specifications.
Does MAX6384XS44D3 require an external pullup resistor on the MR pin?
No, MAX6384XS44D3 includes an internal 63kΩ pullup resistor on the MR pin, allowing direct connection to a momentary switch tied to GND without external components. This feature is confirmed in the Pin Description section and Electrical Characteristics table for MR internal pullup resistance.
What is the minimum reset timeout period for MAX6384XS44D3?
The MAX6384XS44D3 provides a minimum VCC reset timeout period of 140ms, denoted by the "D3" suffix. This value is specified in the Reset Timeout Delay table and applies to the primary VCC-supply reset assertion duration after voltage recovery.
Can MAX6384XS44D3 operate reliably at VCC = 1.2V?
Yes, MAX6384XS44D3 guarantees correct RESET output logic state down to VCC = 1.0V, as stated in the Absolute Maximum Ratings and Detailed Description sections. At 1.2V, the device fully meets its reset assertion/deassertion timing and voltage threshold specifications.
Which package type does MAX6384XS44D3 use?
MAX6384XS44D3 uses the 4-pin SC70 package (package code X4-1), measuring 1.3mm × 1.1mm × 0.95mm. This is explicitly listed in the Ordering Information table and confirmed in the Pin Configurations diagrams for MAX6384 variants.
MAX6384XS44D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6384XS44D3 FAQ
1.How can I place an order for MAX6384XS44D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6384XS44D3 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 MAX6384XS44D3 reliable?
The price and inventory of MAX6384XS44D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6384XS44D3 is usually 5 days.
3.What payment methods are accepted for MAX6384XS44D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6384XS44D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6384XS44D3?
MAX6384XS44D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6384XS44D3 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 MAX6384XS44D3?
For technical support, including MAX6384XS44D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6384XS44D3 requirements.
6.How does Aetrix verify that MAX6384XS44D3 is sourced from the original manufacturer or authorized distributors?
All MAX6384XS44D3 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 MAX6384XS44D3 meets industry standards.
7.What is the process for return or replacement of MAX6384XS44D3?
All MAX6384XS44D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6384XS44D3, 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 MAX6384XS44D3 part is unused and in its original packaging.
Return procedure for MAX6384XS44D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6384XS44D3 Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
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