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Analog Devices Inc./Maxim Integrated MAX6384XS40D3+T
- Part No.:
- MAX6384XS40D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6384XS40D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,825
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Product details
Overview
MAX6384XS40D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with factory-set 4.0V reset threshold, 140ms minimum VCC reset timeout, and active-low push-pull reset output. It monitors +1.8V to +5.0V supply rails, consumes only 3μA at +1.8V, and guarantees valid reset state down to VCC = 1V. Used in portable equipment and dual-voltage systems for reliable power-up/brownout protection.
For engineers reviewing the MAX6384XS40D3+T datasheet, MAX6384XS40D3+T pinout, MAX6384XS40D3+T application, or MAX6384XS40D3+T equivalent, key selection criteria include reset threshold accuracy (±2.5% over −40°C to +125°C), manual reset input with internal pullup, SC70-4 package footprint, and compatibility with critical μP reset timing requirements.
Technical Context
The MAX6384XS40D3+T implements a precision voltage comparator with ±2.5% threshold accuracy over temperature, paired with a monolithic timer that enforces a guaranteed minimum 140ms reset assertion after VCC rises above 4.0V. Its internal 63kΩ MR pullup resistor enables direct connection of a momentary switch to GND without external components.
This device operates across the full industrial temperature range (−40°C to +125°C) and supports stable reset generation even during negative-going VCC transients up to 100mV overdrive, with immunity validated per typical operating characteristics graphs in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V (factory-set, ±2.5% tolerance over −40°C to +125°C) |
| VCC Supply Current | 3μA at +1.8V - enables multi-year battery life in portable applications |
| Reset Timeout Period | 140ms minimum - ensures sufficient hold time for μP initialization sequences |
| Reset Output Type | Active-low push-pull - drives reset line directly without external pullup resistor |
| Manual Reset Input | MR with 63kΩ internal pullup - supports TTL/CMOS logic or momentary switch interface |
| Operating Voltage Range | +1.0V to +5.5V - guarantees functional reset assertion down to 1V VCC |
| Temperature Range | −40°C to +125°C - qualified for automotive and industrial environments |
Pinout & Package
MAX6384XS40D3+T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - must be decoupled with 0.1μF capacitor near pin |
| 2 | RESET | Active-low push-pull reset output - asserts low during power failure or manual reset, deasserts after 140ms timeout |
| 3 | MR | Active-low manual reset input - internal 63kΩ pullup to VCC; drive low to force reset |
| 4 | GND | Ground reference for all internal circuitry and reset output driver |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.00V with ±2.5% accuracy over full temperature range - eliminates external resistor divider calibration |
| Guaranteed reset validity | Operates correctly down to VCC = 1V - ensures deterministic reset behavior during deep brownout |
| Debounced manual reset | Internal MR filtering plus 63kΩ pullup - removes need for external RC debounce network |
| Negative transient immunity | Withstands VCC glitches ≤100mV below threshold without spurious reset - improves system robustness in noisy environments |
| Low quiescent current | 3μA at +1.8V - extends battery life in always-on monitoring applications |
Applications
| Portable/Battery-Powered Equipment | Dual Voltage Systems |
|---|---|
Use Scenario: Power management in handheld medical devices with Li-ion battery and dual-rail (1.8V/3.3V) logic. IC Role / Device Role / Timing Role: Monitors main supply and asserts reset if voltage drops below 4.0V during battery discharge or load surge. Use Value: Prevents erratic μP operation during brownout, leveraging 140ms timeout to ensure full firmware reload before release. | Use Scenario: Industrial sensor node with separate core (1.2V) and I/O (3.3V) supplies. IC Role / Device Role / Timing Role: Supervises 3.3V I/O rail using VCC pin; MR pin allows synchronized reset initiation across both domains. Use Value: Enables coordinated system reset via single pushbutton while maintaining independent voltage monitoring integrity. |
| Computers | Intelligent Instruments |
Use Scenario: Embedded controller in fanless mini-PC subjected to thermal cycling and intermittent power loss. IC Role / Device Role / Timing Role: Provides power-on reset and brownout detection on 5.0V auxiliary rail, with MR supporting remote diagnostics reset. Use Value: Ensures deterministic boot state after thermal shutdown, using ±2.5% threshold stability to avoid false resets at temperature extremes. | Use Scenario: Portable multimeter with segmented LCD and precision ADC requiring clean startup sequence. IC Role / Device Role / Timing Role: Generates 140ms reset pulse on 3.3V supply to synchronize analog front-end and digital logic initialization. Use Value: Eliminates display artifacts and ADC offset errors caused by partial power-up, enabled by guaranteed reset assertion down to VCC = 1V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR40D3+T | Same 4.0V threshold and 140ms timeout, but no manual reset input (MR) | Lacks MR functionality - unsuitable where operator-initiated reset is required | Select when only VCC supervision is needed and board space permits identical SC70-3 footprint |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, 1.8V–6.0V operating range, 1.6μA typical ICC | Lower supply current but different threshold - requires redesign if 4.0V monitoring is mandatory | Choose for ultra-low-power designs where 3.3V reset suffices and TI supply chain preference applies |
Compared with MAX6326XR40D3+T and TPS3808G33DBVR, the MAX6384XS40D3+T uniquely combines 4.0V precision threshold, 140ms timeout, MR input, and push-pull output in a 4-pin SC70 - enabling compact, feature-complete reset supervision without external components or layout changes.
Availability
MAX6384XS40D3+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, dual voltage systems, and intelligent instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6384XS40D3+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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP reset supervision with configurable thresholds and timeouts - engineered specifically for reliability-critical embedded systems where deterministic power sequencing is essential.
FAQ
What is the exact reset threshold voltage of the MAX6384XS40D3+T?
The MAX6384XS40D3+T has a factory-set reset threshold of 4.00V, with guaranteed accuracy of ±2.5% over the full operating temperature range (−40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "40" corresponds to nominal 4.00V. The MAX6384XS40D3+T maintains this specification without requiring external calibration or trimming components.
Does the MAX6384XS40D3+T include a manual reset input, and how is it implemented?
Yes, the MAX6384XS40D3+T includes an active-low manual reset input (MR) on pin 3. It features an internal 63kΩ pullup resistor to VCC, allowing direct connection of a momentary switch to GND. No external components are required for basic operation. The MR input accepts TTL/CMOS logic levels and provides glitch rejection of 100ns, ensuring noise-immune reset initiation. This functionality is explicitly documented in the Pin Description and Features sections of the MAX6384XS40D3+T datasheet.
What package type and dimensions does the MAX6384XS40D3+T use?
The MAX6384XS40D3+T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. It is RoHS-compliant (indicated by the "+" suffix) and rated for operation from −40°C to +125°C. This compact footprint is validated for reflow soldering at +260°C and supports high-density PCB layouts in space-constrained applications such as portable instrumentation and wearables.
What is the reset timeout period of the MAX6384XS40D3+T, and is it guaranteed minimum or typical?
The MAX6384XS40D3+T has a guaranteed minimum reset timeout period of 140ms after VCC rises above the 4.00V threshold. This value is specified in the Reset Timeout Delay table under suffix "D3", and electrical characteristics confirm it as a minimum (not typical) value across temperature and voltage. The actual timeout may extend beyond 140ms depending on process variation, but the system design can rely on ≥140ms assertion for safe μP initialization - a requirement clearly met by the MAX6384XS40D3+T.
Can the MAX6384XS40D3+T operate reliably at low supply voltages, and what is its minimum functional VCC?
Yes, the MAX6384XS40D3+T guarantees correct reset output logic state down to VCC = 1.0V, as stated in the Absolute Maximum Ratings and Detailed Description sections. Its internal circuitry remains fully functional across the entire operating range of +1.0V to +5.5V, and the reset output is actively driven (push-pull) even at 1.0V. This capability ensures deterministic behavior during deep brownout conditions - a key reliability feature of the MAX6384XS40D3+T not shared by many competing supervisors.
MAX6384XS40D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4V
- 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
MAX6384XS40D3+T FAQ
1.How can I place an order for MAX6384XS40D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6384XS40D3+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 MAX6384XS40D3+T reliable?
The price and inventory of MAX6384XS40D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6384XS40D3+T is usually 5 days.
3.What payment methods are accepted for MAX6384XS40D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6384XS40D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6384XS40D3+T?
MAX6384XS40D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6384XS40D3+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 MAX6384XS40D3+T?
For technical support, including MAX6384XS40D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6384XS40D3+T requirements.
6.How does Aetrix verify that MAX6384XS40D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6384XS40D3+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 MAX6384XS40D3+T meets industry standards.
7.What is the process for return or replacement of MAX6384XS40D3+T?
All MAX6384XS40D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6384XS40D3+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 MAX6384XS40D3+T part is unused and in its original packaging.
Return procedure for MAX6384XS40D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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