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Analog Devices Inc./Maxim Integrated MAX6385XS35D6-T
- Part No.:
- MAX6385XS35D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS35D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,760
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Product details
Overview
MAX6385XS35D6-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.50V reset threshold, 560ms minimum VCC reset timeout, and manual reset input. It monitors +1.8V to +5.0V supply rails in low-power embedded systems, consumes only 3μA at +1.8V, guarantees valid reset output down to VCC = 1V, and operates across –40°C to +125°C for industrial and automotive applications.
For engineers reviewing the MAX6385XS35D6-T datasheet, MAX6385XS35D6-T pinout, MAX6385XS35D6-T application, or MAX6385XS35D6-T equivalent, key selection considerations include its 4-pin SC70 package, active-high push-pull RESET output, ±2.5% reset threshold accuracy over temperature, debounced MR input with internal 63kΩ pullup, and immunity to negative-going VCC transients.
Technical Context
The MAX6385XS35D6-T implements a precision voltage comparator with internal 3.50V reference and a monostable timer that asserts RESET high for ≥560ms after VCC rises above 3.50V or after MR release. Its reset logic guarantees correct output state even as VCC drops to 1V, enabling reliable brownout detection in battery-backed systems.
It features a debounced manual reset input (MR) with internal 63kΩ pullup resistor, supporting TTL/CMOS-compatible triggering and eliminating external debounce circuitry. The active-high push-pull output drives directly into μP reset inputs without requiring external pullup resistors, simplifying board layout versus open-drain alternatives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.50V nominal, ±2.5% over –40°C to +125°C - ensures stable reset assertion across wide temperature range without calibration |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold time for μP initialization and peripheral stabilization |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable devices |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset behavior during deep brownout and compatibility with 1.2V–5V logic domains |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and reduces BOM count vs. open-drain variants |
| Manual Reset Input | MR with 63kΩ internal pullup - allows direct connection of momentary switch to GND; no external components required |
| Reset Output Validity | Guaranteed down to VCC = 1V - ensures deterministic reset state during power collapse, critical for data retention |
Pinout & Package
MAX6385XS35D6-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm, suitable for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and serves as reset threshold reference point |
| 2 | RESET | Active-high push-pull output; drives high during reset condition and low otherwise; compatible with standard μP reset inputs |
| 3 | GND | Analog and digital ground reference; must be connected to system ground plane for accurate threshold sensing |
| 4 | MR | Active-low manual reset input; internally pulled up to VCC; pulling low forces immediate reset assertion for system recovery or test |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.50V threshold | Eliminates external resistor networks and calibration steps; reduces design cycle time and component count |
| 560ms VCC reset timeout | Ensures μP completes power-on self-test and initializes peripherals before releasing reset |
| Debounced MR input | Rejects mechanical switch bounce and EMI-induced glitches without external RC filtering |
| 3μA supply current at +1.8V | Extends battery life in always-on monitoring nodes and extends shelf life of backup power systems |
| –40°C to +125°C operation | Validates performance in under-hood automotive, industrial control cabinets, and outdoor edge devices |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 3.3V I/O supply and 5V core rail in programmable logic controllers exposed to wide ambient temperature swings and electrical noise. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset, brownout protection, and manual reset via front-panel button. Use Value: Prevents spurious code execution during line transients; 560ms timeout ensures FPGA configuration completes before CPU release. | Use Scenario: Embedded in door module controlling window lift, mirror fold, and interior lighting, operating from vehicle battery (9V–16V) with local LDO regulation. IC Role / Device Role / Timing Role: Resets microcontroller on ignition cycle and responds to service technician's diagnostic reset command. Use Value: MR input enables field-service recovery without reprogramming; ±2.5% threshold accuracy prevents false resets during cold cranking. |
| Portable Medical Sensor Hub | Battery-Powered Smart Meter |
Use Scenario: Powers clinical-grade pulse oximeter and temperature sensor array using single Li-ion cell (2.7V–4.2V) with buck-boost regulator. IC Role / Device Role / Timing Role: Detects undervoltage on regulated 3.0V rail and asserts reset to preserve EEPROM integrity during discharge. Use Value: 3μA quiescent current minimizes standby drain; guaranteed reset validity down to 1V prevents data corruption during final battery depletion. | Use Scenario: Installed in utility meter with supercapacitor backup, monitoring 3.3V MCU supply during grid outage and capacitor discharge. IC Role / Device Role / Timing Role: Triggers controlled shutdown and nonvolatile memory save when main supply falls below 3.50V. Use Value: Factory-set 3.50V threshold matches LDO dropout specification; 560ms timeout allows full register save before power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS35D3-T | Same 3.50V threshold and MR input, but 140ms VCC reset timeout | Suitable for faster-booting MCUs where shorter reset hold time is acceptable | Select when system initialization completes in <200ms and tighter timing margin is needed |
| TPS3808G33DBVR | 3.3V threshold, 200ms timeout, 1.6μA ICC at 3.3V, SOT-23-5 package | Lacks MR input; requires external pullup for active-high reset; lower quiescent current | Choose for ultra-low-power designs without manual reset requirement and where SOT-23 footprint is preferred |
Compared with MAX6385XS35D3-T and TPS3808G33DBVR, the MAX6385XS35D6-T offers longer reset hold time for complex boot sequences and integrated MR functionality-reducing external component count-while maintaining identical threshold accuracy and temperature range.
Availability
MAX6385XS35D6-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensor hubs, and battery-powered smart meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS35D6-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, communications, and computing markets.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP supervisory circuits optimized for reliable reset generation in harsh environments with wide supply and temperature variations.
FAQ
What is the exact reset threshold voltage of the MAX6385XS35D6-T?
The MAX6385XS35D6-T has a factory-set nominal reset threshold of 3.50V, with tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This means the actual threshold remains between 3.41V and 3.59V under all specified conditions, ensuring consistent brownout detection without external trimming.
Does the MAX6385XS35D6-T require an external pullup resistor on its RESET pin?
No, the MAX6385XS35D6-T does not require an external pullup resistor because it features an active-high push-pull RESET output. The internal driver actively pulls the pin high during reset assertion and low otherwise, eliminating reliance on external components and reducing board area and BOM cost compared to open-drain alternatives.
What is the function of the MR pin on the MAX6385XS35D6-T?
The MR (Manual Reset) pin on the MAX6385XS35D6-T is an active-low input with an internal 63kΩ pullup resistor to VCC. Driving MR low forces immediate reset assertion, and the device holds RESET high for the full 560ms timeout after MR is released. This enables hardware-initiated recovery without software intervention.
Can the MAX6385XS35D6-T operate reliably at VCC = 1.2V?
Yes, the MAX6385XS35D6-T guarantees correct RESET output logic state down to VCC = 1.0V, including at 1.2V. Its internal circuitry remains functional and the reset comparator maintains accuracy, making it suitable for ultra-low-voltage applications such as energy-harvesting systems and deeply discharged battery scenarios.
Is the MAX6385XS35D6-T qualified for automotive applications?
The MAX6385XS35D6-T is not explicitly automotive-qualified (i.e., lacks /V suffix per ordering guide); however, it operates across –40°C to +125°C and meets AEC-Q100 requirements for the /V trim versions in the same family. For automotive use, select MAX6385XS35D6/V+T or confirm qualification status with Analog Devices' automotive product line.
MAX6385XS35D6-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:
- 3.5V
- 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
MAX6385XS35D6-T FAQ
1.How can I place an order for MAX6385XS35D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS35D6-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 MAX6385XS35D6-T reliable?
The price and inventory of MAX6385XS35D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS35D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS35D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS35D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS35D6-T?
MAX6385XS35D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS35D6-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 MAX6385XS35D6-T?
For technical support, including MAX6385XS35D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS35D6-T requirements.
6.How does Aetrix verify that MAX6385XS35D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS35D6-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 MAX6385XS35D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS35D6-T?
All MAX6385XS35D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS35D6-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 MAX6385XS35D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS35D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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