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Analog Devices Inc./Maxim Integrated MAX6385XS36D5+T
- Part No.:
- MAX6385XS36D5+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS36D5+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,074
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Product details
Overview
MAX6385XS36D5+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.60V reset threshold, 280ms minimum VCC reset timeout, and manual reset input. It monitors +1.8V to +5.0V supply rails while consuming only 3μA at +1.8V, and guarantees valid reset output down to VCC = 1V. It is used in battery-powered controllers and portable instrumentation requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6385XS36D5+T datasheet, MAX6385XS36D5+T pinout, MAX6385XS36D5+T application, or MAX6385XS36D5+T equivalent, this page delivers verified electrical parameters, SC70-4 package layout, reset timing behavior under temperature variation, MR debounce capability, and direct alternatives for industrial embedded systems design.
Technical Context
The MAX6385XS36D5+T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 280ms (min) reset assertion period after VCC recovers above 3.60V or after release of the active-low manual reset (MR) signal.
It features an internal 63kΩ pullup on MR, supports TTL/CMOS-compatible logic levels, and provides glitch rejection (100ns) and negative-going VCC transient immunity up to 35µs at 100mV overdrive. The push-pull active-high RESET output drives high during fault conditions and deasserts cleanly after timeout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.60V (factory-set, ±2.5% over −40°C to +125°C) - ensures reliable detection of 3.3V rail brownout before µP execution errors occur |
| VCC Reset Timeout | 280ms (minimum) - guarantees sufficient hold time for processor initialization and memory stabilization |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable medical devices |
| MR Input Pullup | 63kΩ internal resistor - eliminates need for external pullup and supports momentary switch interface without debounce circuitry |
| Operating Voltage Range | +1.0V to +5.5V - allows valid reset assertion even during deep brownout, supporting fail-safe shutdown sequencing |
| Reset Output Type | Active-high push-pull - directly interfaces with µP RESET# inputs without external pullup, reducing BOM count |
| Temperature Range | −40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
MAX6385XS36D5+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. This compact footprint supports high-density PCB layouts in space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary monitored voltage rail; powers internal circuitry and enables reset detection |
| 2 | RESET | Active-high push-pull output; asserts high during VCC undervoltage or MR activation, remains high for 280ms post-recovery |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; initiates reset when pulled low |
| 4 | GND | Reference ground for all internal comparators, timers, and output drivers; must be low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.60V with ±2.5% tolerance across full temperature range - eliminates external resistor divider and calibration effort |
| Guaranteed reset validity down to VCC = 1V | Ensures deterministic state entry even during severe brownout - critical for safe firmware recovery in safety-critical systems |
| Integrated MR pullup resistor | 63kΩ internal pullup - removes need for discrete component and simplifies board layout for pushbutton reset implementation |
| Negative-going VCC transient immunity | Rejects glitches ≤35µs wide at 100mV overdrive - prevents spurious resets in electrically noisy industrial environments |
| Low-power operation | 3μA supply current at +1.8V - extends battery life in always-on monitoring applications such as wearable health sensors |
Applications
| Portable Power Management | Battery-Powered Instrumentation |
|---|---|
Use Scenario: A handheld multimeter powered by two AA alkaline cells experiences gradual voltage decay during extended use, dropping below 3.3V nominal. IC Role / Device Role / Timing Role: MAX6385XS36D5+T monitors VCC and asserts active-high RESET to halt measurement processing and preserve memory integrity until voltage recovers or user replaces batteries. Use Value: Prevents corrupted ADC readings and flash write errors during brownout, ensuring measurement traceability and data reliability. |
Use Scenario: An environmental sensor node uses a low-power MCU and transmits data over LoRaWAN; its 3.3V LDO output sags during RF transmission bursts. IC Role / Device Role / Timing Role: MAX6385XS36D5+T detects sag below 3.60V and holds RESET high for 280ms, allowing the MCU to complete transmission and enter safe sleep mode before power collapse. Use Value: Eliminates packet loss and memory corruption caused by premature MCU wake-up or incomplete radio handshakes. |
| Industrial Controller Supervision | Medical Diagnostic Handheld |
Use Scenario: A PLC I/O module operates in a factory environment where 24V DC supply ripple causes brief dips on its internal 3.3V rail. IC Role / Device Role / Timing Role: MAX6385XS36D5+T provides immunity to sub-100µs transients and asserts RESET only on sustained undervoltage, avoiding nuisance resets during normal operation. Use Value: Maintains deterministic system uptime and avoids uncontrolled reboots that could interrupt real-time control loops. |
Use Scenario: A portable ultrasound probe draws high peak current during image capture, causing temporary 3.3V rail droop below 3.6V. IC Role / Device Role / Timing Role: MAX6385XS36D5+T triggers active-high RESET to freeze imaging pipeline and preserve last valid frame buffer before voltage collapse. Use Value: Ensures clinical-grade image continuity and prevents diagnostic artifacts caused by partial frame writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS36D3+T | 140ms (min) VCC reset timeout vs. 280ms - shorter assertion period | Suitable for faster-booting MCUs with minimal initialization overhead | Select when system boot sequence completes in <150ms and longer timeout risks unnecessary delay |
| MAX6385XS36D6+T | 560ms (min) VCC reset timeout vs. 280ms - longer assertion period | Required for complex SoCs with multi-stage boot ROM, PLL lock, and DDR training | Select when firmware requires >300ms of guaranteed reset hold time before first instruction fetch |
Compared with MAX6385XS36D5+T, the D3 variant reduces reset duration for speed-critical applications, while the D6 variant extends it for robustness in complex boot sequences - both retain identical 3.60V threshold, MR functionality, and SC70-4 packaging.
Availability
MAX6385XS36D5+T is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered controllers, and industrial embedded systems requiring stable component supply, long-term lifecycle support, and AEC-Q100–compatible qualification.
Supply support for MAX6385XS36D5+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 interface applications, with emphasis on low-power, high-reliability solutions for industrial and automotive markets.
MAX6385XS36D5+T belongs to the MAX6381–MAX6390 family of ultra-low-power µP supervisory circuits, engineered specifically for reliable power-monitoring in space- and energy-constrained embedded systems operating across extended temperature ranges.
FAQ
What is the exact reset threshold voltage of MAX6385XS36D5+T?
The MAX6385XS36D5+T has a factory-set reset threshold of 3.60V, with guaranteed tolerance of ±2.5% over the full operating temperature range (−40°C to +125°C). This value is laser-trimmed during production and does not require external calibration. The "36" suffix in MAX6385XS36D5+T explicitly denotes the 3.60V threshold per Maxim's ordering guide.
Does MAX6385XS36D5+T support manual reset functionality?
Yes, MAX6385XS36D5+T includes a dedicated active-low manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 280ms timeout after MR is released. No external components are required for basic pushbutton implementation.
What package type and dimensions does MAX6385XS36D5+T use?
MAX6385XS36D5+T is supplied in a lead-free, RoHS-compliant 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern (90-0187) is optimized for standard reflow soldering and supports high-density routing in portable electronics PCBs.
How does MAX6385XS36D5+T behave during deep brownout conditions?
MAX6385XS36D5+T guarantees correct reset output logic state down to VCC = 1.0V. Below this level, internal circuitry may cease operation, but the push-pull output remains latched in its last valid state. For operation down to 0V, external pullup/pulldown resistors are required - though this is not needed for MAX6385XS36D5+T's intended use cases.
Is MAX6385XS36D5+T qualified for automotive applications?
No, MAX6385XS36D5+T is not automotive-qualified. It carries the "+T" RoHS suffix but lacks the "/V" automotive grade designation. For AEC-Q100 compliance, select variants such as MAX6385XS36D5/V+T - which share identical electrical specs but include extended reliability testing and automotive-grade screening.
MAX6385XS36D5+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:
- 3.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS36D5+T FAQ
1.How can I place an order for MAX6385XS36D5+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS36D5+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 MAX6385XS36D5+T reliable?
The price and inventory of MAX6385XS36D5+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS36D5+T is usually 5 days.
3.What payment methods are accepted for MAX6385XS36D5+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS36D5+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS36D5+T?
MAX6385XS36D5+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS36D5+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 MAX6385XS36D5+T?
For technical support, including MAX6385XS36D5+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS36D5+T requirements.
6.How does Aetrix verify that MAX6385XS36D5+T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS36D5+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 MAX6385XS36D5+T meets industry standards.
7.What is the process for return or replacement of MAX6385XS36D5+T?
All MAX6385XS36D5+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS36D5+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 MAX6385XS36D5+T part is unused and in its original packaging.
Return procedure for MAX6385XS36D5+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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