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Analog Devices Inc./Maxim Integrated MAX6385XS41D6-T
- Part No.:
- MAX6385XS41D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS41D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,840
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Product details
Overview
MAX6385XS41D6-T from Maxim Integrated is a precision microprocessor supervisory circuit with active-high push-pull reset output, factory-set 4.10V reset threshold (±2.5% over −40°C to +125°C), 560ms minimum VCC reset timeout, and debounced manual reset input (MR). It monitors single-supply rails in low-power embedded systems where reliable power-on reset and brownout protection are critical-e.g., battery-powered industrial controllers.
For engineers reviewing the MAX6385XS41D6-T datasheet, MAX6385XS41D6-T pinout, MAX6385XS41D6-T application, or MAX6385XS41D6-T equivalent, key selection factors include its 4.10V threshold accuracy, MR input with internal 63kΩ pullup, guaranteed reset validity down to VCC = 1V, SC70-4 package footprint, and compatibility with dual-voltage monitoring systems requiring auxiliary reset capability.
Technical Context
The MAX6385XS41D6-T implements a precision bandgap-based voltage comparator for VCC monitoring, paired with a digital timeout counter that asserts RESET for ≥560ms after VCC rises above 4.10V. Its MR input features built-in glitch rejection (100ns) and guarantees reset assertion during manual trigger events independent of VCC level.
This device operates across −40°C to +125°C with ±2.5% reset threshold stability and consumes only 3μA at 1.8V. It guarantees valid logic levels on the active-high push-pull RESET output down to VCC = 1V, enabling robust reset signaling even during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.10V nominal, ±2.5% over −40°C to +125°C - ensures accurate detection of 4.1V supply brownout without false triggering. |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold time for microprocessor initialization after power recovery. |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors. |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct connection to μP reset inputs. |
| Manual Reset Input | MR with 63kΩ internal pullup - allows momentary switch interface without external components; supports TTL/CMOS drive. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
| Package | 4-pin SC70 (X4+1 outline) - 1.3mm × 1.6mm footprint ideal for space-constrained PCBs. |
Pinout & Package
MAX6385XS41D6-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 1.3mm × 1.6mm × 0.95mm with gull-wing leads. Thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; operates from 1.0V to 5.5V; powers internal circuitry and reference. |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion; sinks 1.2mA at 2.5V; valid down to VCC = 1V. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; requires <0.3×VCC to assert reset. |
| 4 | GND | Ground reference for all internal comparators, timers, and output drivers; must be connected to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.10V with ±2.5% tolerance over full temperature range - eliminates external resistor divider and calibration effort. |
| Guaranteed reset validity | RESET output remains logically valid down to VCC = 1V - prevents undefined reset state during deep brownout. |
| Debounced manual reset | MR input rejects <100ns glitches and provides 200ns propagation delay - enables direct switch connection without RC filtering. |
| Negative-going transient immunity | Immune to VCC glitches ≤35µs at 100mV overdrive - suppresses noise-induced false resets in electrically noisy environments. |
| Low-power operation | 3μA supply current at 1.8V - extends battery life in portable instrumentation and wireless sensor nodes. |
Applications
| Industrial PLC I/O Modules | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Power cycling due to intermittent 24V DC field supply in factory automation cabinets. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail derived from 24V input; asserts active-high RESET for 560ms after voltage recovery to ensure FPGA and MCU re-initialization. Use Value: Prevents firmware lockup during brownout by guaranteeing reset hold time exceeds processor boot sequence requirements. |
Use Scenario: Multi-year deployment in remote environmental monitoring stations powered by Li-SOCl₂ cells. IC Role / Device Role / Timing Role: Supervises 3.0V microcontroller supply; MR input enables field technician-initiated reset via tactile switch without PCB redesign. Use Value: 3μA quiescent current extends usable battery life beyond 10 years while maintaining deterministic reset behavior. |
| Automotive Body Control Modules | Dual-Rail Microcontroller Systems |
|
Use Scenario: Cold-cranking events causing 5V supply dip below 4.1V in vehicle body electronics. IC Role / Device Role / Timing Role: Provides AEC-Q100–qualified reset supervision for 5V domain; 4.10V threshold aligns with automotive 5V regulator dropout specs. Use Value: Ensures ECU enters safe state during cranking transients, meeting ISO 16750-2 pulse 4a immunity requirements. |
Use Scenario: Simultaneous monitoring of 1.8V core and 3.3V I/O supplies in ARM Cortex-M7 applications. IC Role / Device Role / Timing Role: Used alongside MAX6387/MAX6388 (with RESET IN) to supervise secondary rail; shares same SC70 footprint for layout reuse. Use Value: Enables compact dual-supply reset solution with matched thermal performance and timing characteristics across variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385LT41D6-T | Same electrical specs but in 6-pin μDFN (L611+1) package - 0.8mm height, higher thermal resistance (θJA = 477°C/W). | Preferred for thermally constrained designs needing better power dissipation margin; requires different PCB footprint. | Select when board layout allows larger package and thermal management prioritizes junction-to-ambient conduction. |
| MAX809TRD3-T | 4.63V reset threshold, 240ms timeout, no MR input, 3-pin SOT23 package - lacks manual reset and has tighter threshold tolerance (±1.5%) but lower cost. | Suitable for cost-sensitive, single-threshold applications without field service requirements. | Choose when 4.63V threshold matches system rail and manual reset is unnecessary; verify 240ms timeout suffices for target μP. |
Compared with MAX6385LT41D6-T, the MAX6385XS41D6-T offers identical reset functionality in a smaller 4-pin SC70 footprint ideal for ultra-compact layouts, while MAX809TRD3-T trades MR capability and timeout flexibility for lower unit cost and simpler 3-pin integration.
Availability
MAX6385XS41D6-T is available at Aetrix Electronics and suitable for industrial controllers, battery-powered instrumentation, automotive body electronics, and dual-rail microcontroller systems requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6385XS41D6-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 computing applications, emphasizing low power, high reliability, and AEC-Q100 qualification.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for microprocessor reset in space- and power-constrained systems, with emphasis on factory-trimmed thresholds, wide temperature operation, and minimal external components.
FAQ
What is the exact reset threshold voltage of MAX6385XS41D6-T and how stable is it over temperature?
The MAX6385XS41D6-T has a factory-set nominal reset threshold of 4.10V, with guaranteed accuracy of ±2.5% over the full operating temperature range of −40°C to +125°C. This stability is achieved through laser-trimmed bandgap references and on-die compensation, ensuring consistent brownout detection without external calibration. The MAX6385XS41D6-T maintains this specification across all production lots and environmental conditions specified in the datasheet.
Does MAX6385XS41D6-T support manual reset, and what are the electrical requirements for the MR pin?
Yes, the MAX6385XS41D6-T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. To assert reset, MR must be driven below 0.3×VCC (e.g., <1.0V at 3.3V supply). The input rejects glitches shorter than 100ns and exhibits 200ns propagation delay from MR low to RESET assertion. The MAX6385XS41D6-T guarantees correct MR functionality across its entire −40°C to +125°C operating range.
What is the minimum VCC voltage at which MAX6385XS41D6-T guarantees valid RESET output logic levels?
The MAX6385XS41D6-T guarantees that its active-high push-pull RESET output maintains valid logic states down to VCC = 1.0V. Below this voltage, output behavior is not specified. This feature ensures deterministic reset signaling during deep brownout events common in battery-powered systems, where supply voltage may sag significantly before complete failure. The MAX6385XS41D6-T achieves this via specialized low-voltage output stage design.
Can MAX6385XS41D6-T be used in automotive applications, and what qualifications does it hold?
The MAX6385XS41D6-T is AEC-Q100 qualified for automotive use, as confirmed in the official Maxim Integrated datasheet. It operates reliably across −40°C to +125°C and meets stringent automotive reliability standards for temperature cycling, humidity, and ESD. While the base part number does not include the "/V" suffix (indicating automotive-grade packaging), its electrical specifications and qualification data confirm suitability for body electronics and infotainment subsystems. Always verify latest qualification status via Analog Devices' product page for MAX6385XS41D6-T.
What are the key differences between MAX6385XS41D6-T and MAX6385LT41D6-T?
The MAX6385XS41D6-T and MAX6385LT41D6-T share identical electrical specifications-including 4.10V reset threshold, 560ms timeout, MR input, and operating temperature-but differ exclusively in package: XS denotes 4-pin SC70 (1.3mm × 1.6mm), while LT denotes 6-pin μDFN (2mm × 2mm). The SC70 version offers smaller footprint and lower profile; the μDFN provides better thermal performance (θJA = 477°C/W vs. 322.6°C/W) and higher power handling. Both are RoHS-compliant and pin-compatible within their respective families.
MAX6385XS41D6-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:
- 4.1V
- 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
MAX6385XS41D6-T FAQ
1.How can I place an order for MAX6385XS41D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS41D6-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 MAX6385XS41D6-T reliable?
The price and inventory of MAX6385XS41D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS41D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS41D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS41D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS41D6-T?
MAX6385XS41D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS41D6-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 MAX6385XS41D6-T?
For technical support, including MAX6385XS41D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS41D6-T requirements.
6.How does Aetrix verify that MAX6385XS41D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS41D6-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 MAX6385XS41D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS41D6-T?
All MAX6385XS41D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS41D6-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 MAX6385XS41D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS41D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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