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Analog Devices Inc./Maxim Integrated MAX6385XS24D3-T
- Part No.:
- MAX6385XS24D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS24D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
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Product details
Overview
MAX6385XS24D3-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.40V ±2.5% reset threshold, and 140ms minimum VCC reset timeout. It monitors single supply voltage (1.0V to 5.5V), consumes only 3μA at 1.8V, and guarantees valid reset state down to VCC = 1V. Used in portable battery-powered equipment for reliable power-up/brownout protection.
For engineers reviewing the MAX6385XS24D3-T datasheet, MAX6385XS24D3-T pinout, MAX6385XS24D3-T application, or MAX6385XS24D3-T equivalent, key selection criteria include reset threshold accuracy over -40°C to +125°C, manual reset input with internal pullup, SC70-4 package footprint, and compatibility with dual-voltage system monitoring requirements.
Technical Context
The MAX6385XS24D3-T implements a precision bandgap-based reset comparator with ±2.5% threshold accuracy across -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 140ms reset assertion after VCC rises above 2.40V.
It features a debounced active-low manual reset input (MR) with 63kΩ internal pullup resistor, enabling external reset initiation without external components. The active-high push-pull RESET output drives high during fault conditions and guarantees logic validity down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.40V ±2.5% (factory-trimmed; ensures reliable detection of 2.4V supply brownout) |
| Reset Timeout | 140ms min (guarantees μP remains held in reset long enough for stable power rail recovery) |
| Supply Current | 3μA at +1.8V (enables multi-year operation in coin-cell–powered IoT sensors) |
| Operating Voltage | 1.0V to 5.5V (supports direct interface with 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic domains) |
| Reset Output Type | Active-high push-pull (drives high during reset; no external pullup required) |
| Manual Reset Input | Active-low MR with 63kΩ internal pullup (simplifies PCB layout; supports momentary switch or logic-level assertion) |
| Temp Range | -40°C to +125°C (qualified for automotive under-hood and industrial control environments) |
Pinout & Package
MAX6385XS24D3-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, suitable for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input; powers internal circuitry and serves as monitored voltage source |
| 2 | RESET | Active-high push-pull output; asserts high during VCC undervoltage or MR activation |
| 3 | GND | Analog/digital ground reference; must be connected to system ground plane |
| 4 | MR | Active-low manual reset input; internally pulled up to VCC; initiates reset when pulled low |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.40V with ±2.5% tolerance over full temperature range eliminates need for external calibration |
| Low quiescent current | 3μA at 1.8V enables >10-year battery life in always-on monitoring applications |
| Valid reset output down to VCC = 1V | Ensures deterministic μP reset state even during deep brownout or fast power collapse |
| Integrated MR pullup resistor | 63kΩ internal pullup removes requirement for external component and reduces BOM count |
| Negative-going transient immunity | Rejects sub-10µs VCC glitches up to 100mV below threshold, improving noise robustness |
Applications
| Portable Power Management | Industrial Controller Monitoring |
|---|---|
Use Scenario: Battery-powered handheld meter with Li-ion supply and ultra-low-power MCU. IC Role / Device Role / Timing Role: Supervises 3.3V system rail and asserts reset if voltage drops below 2.40V during discharge or cold start. Use Value: Prevents corrupted firmware execution during marginal battery conditions using only 3μA quiescent current. | Use Scenario: PLC I/O module operating in harsh factory environment with wide ambient temperature swings. IC Role / Device Role / Timing Role: Monitors 2.5V core supply and provides 140ms reset hold time to ensure FPGA configuration stability after power recovery. Use Value: Guarantees ±2.5% threshold accuracy from -40°C to +125°C, eliminating thermal drift-related resets. |
| Automotive Body Control Unit | Dual-Voltage Embedded System |
Use Scenario: Automotive door module powered by 5V rail derived from vehicle battery. IC Role / Device Role / Timing Role: Provides AEC-Q100–compliant reset supervision with manual reset capability for service diagnostics. Use Value: MR input enables technician-initiated reset via CAN diagnostic command without hardware modification. | Use Scenario: FPGA-based data acquisition board with separate 1.2V core and 3.3V I/O supplies. IC Role / Device Role / Timing Role: Resets processor only when primary 3.3V rail falls below 2.40V; MR allows synchronized reset of both voltage domains. Use Value: Active-high push-pull output interfaces directly with FPGA's active-high PROG_B pin without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR24D3+T | Same 2.40V threshold and 140ms timeout, but active-low open-drain output requiring external pullup | Lacks MR input; not suitable where manual reset is required | Select when system uses active-low reset architecture and board space permits pullup resistor |
| TPS3808G33DBVR | 2.33V threshold (±0.5%), 200ms timeout, 1.4μA typical ICC at 3.3V; SOT-23-5 package | Includes watchdog timer; no MR input; higher accuracy but different timing and pinout | Choose when tighter threshold tolerance and watchdog functionality are needed, accepting SOT-23-5 footprint change |
Compared with MAX6326XR24D3+T and TPS3808G33DBVR, the MAX6385XS24D3-T uniquely combines active-high push-pull output, integrated MR input, and SC70-4 footprint-enabling simplified layout and direct compatibility with systems requiring manual reset without external components.
Availability
MAX6385XS24D3-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial controllers, automotive body electronics, and dual-voltage embedded systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6385XS24D3-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 power, sensing, and connectivity applications, with emphasis on reliability and low-power operation.
The MAX6381–MAX6390 family delivers single/dual low-voltage, low-power μP reset circuits optimized for space-constrained, battery-sensitive, and thermally demanding applications across automotive, industrial, and portable markets.
FAQ
What is the exact reset threshold voltage of the MAX6385XS24D3-T?
The MAX6385XS24D3-T has a factory-set reset threshold of 2.40V, specified with ±2.5% accuracy over the full operating temperature range of -40°C to +125°C. This value is trimmed during production and documented in the Reset Thresholds table of the MAX6381–MAX6390 datasheet. The "24" suffix in MAX6385XS24D3-T explicitly denotes the 2.40V nominal threshold.
Does the MAX6385XS24D3-T include a manual reset input?
Yes, the MAX6385XS24D3-T includes an active-low manual reset input (MR) on pin 4. It features a 63kΩ internal pullup resistor to VCC, allowing direct connection of a momentary switch to GND without external components. MR assertion forces reset for the full 140ms timeout period, making it suitable for field service and test-mode entry.
What package type and dimensions does the MAX6385XS24D3-T use?
The MAX6385XS24D3-T is packaged in a lead(Pb)-free, RoHS-compliant 4-pin SC70 package (outline number 21-0098). Its footprint measures 2.0mm × 2.1mm with a maximum height of 0.95mm, and it uses land pattern 90-0187. This compact size supports high-density PCB layouts in portable and wearable electronics.
How does the MAX6385XS24D3-T behave when VCC drops below 1.0V?
The MAX6385XS24D3-T guarantees correct reset output logic state only down to VCC = 1.0V. Below this voltage, the internal circuitry cannot maintain defined operation. For applications requiring valid reset signaling all the way to 0V, an external pullup resistor on the RESET pin is recommended-but note that this applies only to push-pull variants like the MAX6385XS24D3-T, not open-drain versions.
Is the MAX6385XS24D3-T qualified for automotive applications?
The MAX6385XS24D3-T itself is not explicitly marked with the /V automotive qualification suffix in its ordering code. However, the MAX6381–MAX6390 family includes /V-qualified variants (e.g., MAX6385XS24D3/V+T), and the base device meets AEC-Q100 stress test requirements. For production automotive use, specify the /V version; the MAX6385XS24D3-T is suitable for industrial and commercial applications with identical -40°C to +125°C operation.
MAX6385XS24D3-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:
- 2.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS24D3-T FAQ
1.How can I place an order for MAX6385XS24D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS24D3-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 MAX6385XS24D3-T reliable?
The price and inventory of MAX6385XS24D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS24D3-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS24D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS24D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS24D3-T?
MAX6385XS24D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS24D3-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 MAX6385XS24D3-T?
For technical support, including MAX6385XS24D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS24D3-T requirements.
6.How does Aetrix verify that MAX6385XS24D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS24D3-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 MAX6385XS24D3-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS24D3-T?
All MAX6385XS24D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS24D3-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 MAX6385XS24D3-T part is unused and in its original packaging.
Return procedure for MAX6385XS24D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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