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Analog Devices Inc./Maxim Integrated MAX6385XS17D2-T
- Part No.:
- MAX6385XS17D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS17D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,963
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Product details
Overview
MAX6385XS17D2-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 1.67V reset threshold (±2.5% over -40°C to +125°C), 20ms minimum reset timeout, and manual reset input (MR) with internal 63kΩ pullup. It monitors VCC from +1.8V to +5.0V while consuming only 3μA at +1.8V and guarantees valid reset state down to VCC = 1V - used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6385XS17D2-T datasheet, MAX6385XS17D2-T pinout, MAX6385XS17D2-T application, or MAX6385XS17D2-T equivalent, key selection considerations include its 4-pin SC70 package, active-high reset logic, 1.67V threshold tolerance, MR debounce capability, and compatibility with dual-voltage systems requiring stable low-current supervision.
Technical Context
The MAX6385XS17D2-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C and integrates a monostable timer for fixed 20ms reset assertion after VCC recovery. Its MR input features internal 63kΩ pullup and 1µs minimum pulse width support, enabling direct connection to momentary switches without external components.
This device uses BiCMOS process technology to achieve ultra-low quiescent current (3μA at 1.8V) while maintaining robust negative-going VCC transient immunity up to 35µs at 100mV overdrive. Reset output remains valid down to VCC = 1V, ensuring deterministic behavior during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.67V nominal, ±2.5% over temperature - ensures accurate detection of 1.8V rail brownout without false triggers. |
| Reset Timeout | 20ms minimum - provides sufficient hold time for microprocessor initialization after power recovery. |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| Operating Voltage | 1.0V to 5.5V - supports supervision of core, I/O, and auxiliary rails in modern low-voltage SoC designs. |
| Reset Output Type | Active-high push-pull - eliminates need for external pullup resistor and drives standard CMOS inputs directly. |
| MR Input Pullup | 63kΩ internal - allows direct switch-to-GND interface with no external components for manual reset function. |
| Temperature Range | -40°C to +125°C - qualified for automotive under-hood and industrial control applications. |
Pinout & Package
MAX6385XS17D2-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 and monitored voltage rail - must be decoupled with 0.1µF capacitor near pin for transient immunity. |
| 2 | RESET | Active-high push-pull reset output - asserts high during fault; deasserts low after timeout; drives loads up to 1.2mA at 2.5V. |
| 3 | MR | Active-low manual reset input - internal 63kΩ pullup to VCC; requires <1µs pulse width; immune to >100ns glitches. |
| 4 | GND | Analog/digital ground reference - must be connected to system ground plane with low-inductance path for noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 1.67V with ±2.5% accuracy over full temperature range - eliminates external resistor divider and calibration effort. |
| Ultra-low supply current | 3μA at 1.8V - extends battery life in always-on monitoring nodes without sacrificing supervision reliability. |
| Guaranteed reset validity | Operates correctly down to VCC = 1V - ensures deterministic reset assertion even during severe brownout events. |
| Integrated MR pullup | 63kΩ internal resistor - enables single-switch manual reset implementation with no BOM additions or layout area. |
| Negative transient immunity | Withstands 35µs VCC glitches at 100mV overdrive - prevents spurious resets in electrically noisy environments like motor drives. |
Applications
| Portable Medical Sensors | Battery-Powered IoT Nodes |
|---|---|
|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring guaranteed reset during cold-start and battery depletion. IC Role / Device Role / Timing Role: Supervises 1.8V LDO output and asserts active-high RESET to ARM Cortex-M0+ MCU on power-up and brownout. Use Value: 3μA quiescent current extends operational life beyond 3 years; 1.67V threshold matches typical 1.8V rail dropout point. |
Use Scenario: LoRaWAN end-node in smart agriculture sensor network, operating intermittently on Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Monitors main 3.3V supply and provides 20ms active-high reset pulse to ESP32-WROOM-32 upon wake-up from deep sleep. Use Value: Push-pull output eliminates pullup resistor, reducing BOM count and PCB area; 4-pin SC70 fits 2.5mm² footprint constraint. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
|
Use Scenario: DIN-rail mounted remote I/O module with isolated 5V and 24V supplies, needing fail-safe startup sequence. IC Role / Device Role / Timing Role: Supervises 5V logic rail and generates active-high reset to FPGA configuration controller during power ramp. Use Value: -40°C to +125°C rating ensures operation in uncontrolled cabinet environments; MR input enables field-service reset via front-panel button. |
Use Scenario: LED headlight control module exposed to under-hood thermal cycling and load-dump transients. IC Role / Device Role / Timing Role: Monitors 5V microcontroller supply and delivers glitch-immune active-high reset to Infineon AURIX TC3xx during ignition cycles. Use Value: AEC-Q100 qualified variant available; 35µs transient immunity prevents false resets during alternator load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS17D3-T | Same 1.67V threshold and 4-pin SC70 package, but 140ms reset timeout instead of 20ms. | Suitable for systems requiring longer reset hold time, e.g., FPGAs with extended configuration sequences. | Select when longer timeout is needed; otherwise, MAX6385XS17D2-T provides optimal balance for fast-boot MCUs. |
| TLV803EA16DBZR | 1.6V threshold (±1%), 200ms timeout, SOT-23-3 package, no MR input, 0.5μA supply current. | Lacks manual reset functionality and uses smaller 3-pin package - appropriate for cost-sensitive, space-limited designs without MR requirement. | Choose if MR is unnecessary and lowest possible current (<0.5μA) is critical; MAX6385XS17D2-T adds MR and tighter thermal stability. |
Compared with MAX6385XS17D3-T and TLV803EA16DBZR, the MAX6385XS17D2-T uniquely combines 20ms timing, integrated MR, and ±2.5% threshold accuracy over automotive temperature range - making it optimal for battery-powered embedded controllers requiring both responsiveness and field serviceability.
Availability
MAX6385XS17D2-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT nodes, industrial PLC I/O modules, and automotive body control units requiring stable component supply with long-term lifecycle support.
Supply support for MAX6385XS17D2-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 small form factor.
The MAX6381–MAX6390 family delivers ultra-low-power microprocessor supervisory circuits optimized for battery longevity and robust operation in harsh thermal and electrical environments - targeting portable, automotive, and industrial edge devices.
FAQ
What is the exact reset threshold voltage of MAX6385XS17D2-T and how stable is it over temperature?
The MAX6385XS17D2-T has a factory-set nominal reset threshold of 1.67V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This stability is achieved using a precision bandgap reference and laser-trimmed resistors, ensuring consistent brownout detection across automotive and industrial environments without external calibration.
Does MAX6385XS17D2-T support manual reset, and what are the electrical requirements for the MR pin?
Yes, MAX6385XS17D2-T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. The MR pin accepts TTL/CMOS logic levels: it asserts reset when pulled below 0.3×VCC (for VTH < 4V) and requires a minimum pulse width of 1µs. No external components are needed - a normally open switch from MR to GND suffices for field reset functionality.
What package type and dimensions does MAX6385XS17D2-T use, and is it RoHS-compliant?
MAX6385XS17D2-T is supplied in a lead(Pb)-free, RoHS-compliant 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with a standard 0.65mm pitch. The "+T" suffix confirms tape-and-reel packaging with RoHS compliance, and land pattern 90-0187 is recommended for reliable reflow soldering on multilayer PCBs.
How does the reset output behave during deep brownout, and what is the minimum VCC for valid operation?
The MAX6385XS17D2-T guarantees correct reset output logic state down to VCC = 1.0V - meaning the active-high RESET pin remains low (deasserted) until VCC drops below 1.67V, then goes high (asserted) and stays high for the full 20ms timeout even if VCC collapses further. This ensures deterministic behavior during severe undervoltage events where other supervisors may enter undefined states.
Is MAX6385XS17D2-T pin-compatible with legacy Maxim reset ICs like MAX809 or MAX6326?
No, MAX6385XS17D2-T is not pin-compatible with MAX809 (SOT-23-3) or MAX6326 (SOT-23-5). It uses a 4-pin SC70 footprint distinct from those packages. However, it is functionally compatible and listed as a pin-compatible alternative within the MAX6381–MAX6390 family - e.g., MAX6385XS17D2-T shares pinout with MAX6384XS17D2-T and MAX6386XS17D2-T.
MAX6385XS17D2-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:
- 1.67V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS17D2-T FAQ
1.How can I place an order for MAX6385XS17D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS17D2-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 MAX6385XS17D2-T reliable?
The price and inventory of MAX6385XS17D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS17D2-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS17D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS17D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS17D2-T?
MAX6385XS17D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS17D2-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 MAX6385XS17D2-T?
For technical support, including MAX6385XS17D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS17D2-T requirements.
6.How does Aetrix verify that MAX6385XS17D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS17D2-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 MAX6385XS17D2-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS17D2-T?
All MAX6385XS17D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS17D2-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 MAX6385XS17D2-T part is unused and in its original packaging.
Return procedure for MAX6385XS17D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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