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Analog Devices Inc./Maxim Integrated MAX6385XS26D6-T
- Part No.:
- MAX6385XS26D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS26D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,352
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Product details
Overview
MAX6385XS26D6-T from Maxim Integrated is a precision active-high push-pull μP supervisory circuit designed for reliable power-on reset and brownout detection in low-voltage embedded systems. It features a factory-set 2.63V reset threshold (±2.5% over -40°C to +125°C), 560ms minimum VCC reset timeout, 3μA supply current at 1.8V, and operates down to VCC = 1.0V. It is used in battery-powered microcontroller applications requiring guaranteed reset assertion during voltage sag.
For engineers reviewing the MAX6385XS26D6-T datasheet, MAX6385XS26D6-T pinout, MAX6385XS26D6-T application, or MAX6385XS26D6-T equivalent, this page delivers verified electrical specifications, SC70-4 package layout, manual reset timing behavior, automotive-grade thermal performance, and direct alternatives for design-in validation and BOM optimization.
Technical Context
The MAX6385XS26D6-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C, paired with a temperature-stable monostable timer that guarantees ≥560ms reset assertion after VCC recovers above 2.63V. Its active-high push-pull output drives logic-high during reset, eliminating external pullup requirements.
It integrates a debounced manual reset input (MR) with internal 63kΩ pullup, supporting TTL/CMOS-compatible triggering and guaranteeing reset assertion for ≥560ms after MR release. The device is specified for operation from 1.0V to 5.5V VCC and maintains valid output state down to VCC = 1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal (2.56V min / 2.69V max), ±2.5% accuracy over full temperature range - ensures consistent brownout detection across industrial environments. |
| VCC Reset Timeout | 560ms minimum - holds microprocessor in reset long enough to stabilize power rails and clocks before code execution resumes. |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in portable and IoT edge nodes without compromising supervision reliability. |
| Operating Voltage Range | 1.0V to 5.5V - supports direct interface with core voltages as low as 1.0V while remaining compatible with 3.3V/5V legacy systems. |
| Output Type | Active-high push-pull - provides rail-to-rail logic levels without external components, reducing board space and BOM count. |
| Manual Reset Input | MR with 63kΩ internal pullup - allows momentary switch connection to GND; no external resistor or debounce circuit required. |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment embedded applications. |
Pinout & Package
MAX6385XS26D6-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 ultra-compact footprint supports high-density PCB layouts in space-constrained portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary power supply input and monitored voltage source; powers internal circuitry and sets reset threshold reference point. |
| 2 | RESET | Active-high push-pull reset output; drives high during reset condition and low when system is stable - directly interfaces with μP RESET pin. |
| 3 | GND | Analog and digital ground reference; must be connected to system ground plane for accurate threshold sensing and noise immunity. |
| 4 | MR | Active-low manual reset input; pulling low forces immediate reset assertion and initiates 560ms timeout upon release - supports field service and test mode entry. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±2.5% tolerance over -40°C to +125°C - eliminates need for external resistor dividers or calibration in production. |
| Guaranteed reset validity down to VCC = 1.0V | Ensures deterministic μP initialization even during deep brownout or ultra-low-power wake-up sequences. |
| Debounced manual reset input | Internal 63kΩ pullup and 1µs minimum pulse width rejection prevent false resets from switch bounce or EMI. |
| Negative-going VCC transient immunity | Withstands ≤100µs glitches up to 200mV below threshold - suppresses false resets caused by switching noise on shared power rails. |
| Low quiescent current | 3μA at 1.8V enables integration into always-on sensor nodes without impacting battery lifetime. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
|
Use Scenario: Power sequencing and fault recovery in distributed I/O nodes exposed to 24V rail fluctuations and EMI. IC Role / Device Role / Timing Role: Monitors local 3.3V LDO output; asserts active-high RESET to ARM Cortex-M4 until voltage stabilizes post-power-up or brownout. Use Value: Prevents firmware corruption during unstable supply conditions using guaranteed 560ms timeout and ±2.5% threshold accuracy across wide temperature range. |
Use Scenario: Supervision of microcontroller power in door module ECUs subject to load-dump transients and cold-crank voltage sags. IC Role / Device Role / Timing Role: Tracks 5V system rail; triggers reset via MR pin during diagnostic mode entry and holds reset for 560ms after key-off sequence. Use Value: Enables safe firmware update and fail-safe shutdown using integrated manual reset with internal pullup - no external components needed. |
| Portable Medical Sensors | Smart Energy Meters |
|
Use Scenario: Long-life battery-powered glucose monitor requiring deterministic startup and low-power supervision. IC Role / Device Role / Timing Role: Supervises 1.8V MCU core supply; asserts RESET during cold start and maintains assertion until regulated rail exceeds 2.63V for ≥560ms. Use Value: Achieves >5-year shelf life with 3μA supply current while ensuring robust reset behavior down to VCC = 1.0V during battery depletion. |
Use Scenario: Dual-supply monitoring in revenue-grade meters with separate 3.3V logic and 1.8V RTC rails. IC Role / Device Role / Timing Role: Primary supervisor for 3.3V domain; coordinated with secondary supervisor (e.g., MAX6387) for auxiliary rail monitoring. Use Value: Supports AEC-Q100-compliant designs with validated thermal resistance (θJA = 322.6°C/W) and automotive-grade qualification traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385LT26D6-T | Same electrical specs but in 6-pin μDFN (L611+1) instead of 4-pin SC70 - larger footprint, higher thermal resistance (θJA = 477°C/W). | Better suited for high-power-density boards where μDFN thermal performance is prioritized over size. | Select when board layout allows larger package and improved heat dissipation is required over minimal area. |
| TPS3808G33DBVR | TI part with 3.3V threshold, 200ms timeout, 1.6μA ICC at 3.3V - different threshold/timing binning and no MR input. | Limited to fixed 3.3V systems without manual reset capability; requires external pullup for open-drain variant. | Choose only if 3.3V threshold and shorter timeout are acceptable and MR functionality is unnecessary. |
Compared with MAX6385XS26D6-T, the LT26D6-T offers identical supervision functionality in a thermally superior but physically larger package, while the TPS3808G33DBVR trades threshold flexibility and manual reset for lower quiescent current and vendor diversification - neither is pin-compatible, requiring layout revision.
Availability
MAX6385XS26D6-T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and portable medical sensors requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX6385XS26D6-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 communications applications, emphasizing low power, high accuracy, and rugged reliability.
The MAX6381–MAX6390 family delivers single/dual low-voltage μP reset circuits optimized for battery-powered and automotive systems where guaranteed reset timing, sub-μA quiescent current, and extended temperature operation are critical.
FAQ
What is the exact reset threshold voltage of MAX6385XS26D6-T?
The MAX6385XS26D6-T has a factory-set nominal reset threshold of 2.63V, with guaranteed limits of 2.56V (min) and 2.69V (max) at +25°C, and ±2.5% accuracy maintained over the full -40°C to +125°C operating temperature range - confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6385XS26D6-T support manual reset functionality?
Yes, MAX6385XS26D6-T includes a dedicated MR (manual reset) pin with an internal 63kΩ pullup resistor. Driving MR low forces immediate reset assertion, and the device maintains reset for the full 560ms timeout period after MR is released - no external components are required for basic operation.
What package type and dimensions does MAX6385XS26D6-T use?
MAX6385XS26D6-T is packaged in a lead-free, RoHS-compliant 4-pin SC70 (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern is documented as 90-0187, and it features a thermal resistance of θJA = 322.6°C/W on a multilayer board.
Can MAX6385XS26D6-T operate reliably below 1.8V supply?
Yes, MAX6385XS26D6-T is fully specified from VCC = 1.0V to 5.5V. Its reset output remains valid down to VCC = 1.0V, and supply current is characterized at 1.8V (3μA), 2.5V (4μA), and 3.6V (6μA), enabling use in ultra-low-voltage microcontroller domains.
Is MAX6385XS26D6-T qualified for automotive applications?
MAX6385XS26D6-T carries the "+T" suffix indicating lead-free/RoHS compliance and is rated for -40°C to +125°C operation. While not explicitly marked "/V" (AEC-Q100 automotive grade), its temperature range, thermal specs, and qualification history align with automotive subsystem requirements - confirm /V variants (e.g., MAX6385XS26D6/V+T) for formal AEC-Q100 compliance.
MAX6385XS26D6-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:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS26D6-T FAQ
1.How can I place an order for MAX6385XS26D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS26D6-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 MAX6385XS26D6-T reliable?
The price and inventory of MAX6385XS26D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS26D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS26D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS26D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS26D6-T?
MAX6385XS26D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS26D6-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 MAX6385XS26D6-T?
For technical support, including MAX6385XS26D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS26D6-T requirements.
6.How does Aetrix verify that MAX6385XS26D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS26D6-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 MAX6385XS26D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS26D6-T?
All MAX6385XS26D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS26D6-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 MAX6385XS26D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS26D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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