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Analog Devices Inc./Maxim Integrated MAX6385XS36D2-T
- Part No.:
- MAX6385XS36D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS36D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,700
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Product details
Overview
MAX6385XS36D2-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.60V reset threshold, 20ms minimum reset timeout, and manual reset input (MR), operating from 1.0V to 5.5V supply while consuming only 3μA at 1.8V - used in battery-powered controllers and portable instrumentation for reliable power-up/brownout reset assertion.
For engineers reviewing the MAX6385XS36D2-T datasheet, MAX6385XS36D2-T pinout, MAX6385XS36D2-T application, or MAX6385XS36D2-T equivalent, key selection criteria include its active-high push-pull RESET output, guaranteed valid operation down to VCC = 1V, ±2.5% reset threshold accuracy over –40°C to +125°C, and MR input with internal 63kΩ pullup resistor.
Technical Context
The MAX6385XS36D2-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 3.60V threshold, with hysteresis and negative-going transient immunity up to 35µs at 100mV overdrive. Its internal timer generates a precise 20ms minimum reset timeout after VCC recovery or MR release.
It features a debounced manual reset input (MR) with 1µs minimum pulse width support and 100ns glitch rejection, and guarantees correct RESET logic state (high during reset assertion) for VCC ≥ 1V - enabling robust reset signaling even during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.60V (±2.5% over –40°C to +125°C); ensures deterministic reset initiation when main supply drops below safe MCU operating voltage. |
| Reset Timeout | 20ms (minimum); guarantees sufficient hold time for processor initialization before release of reset signal. |
| Supply Current | 3μA at +1.8V; enables multi-year battery life in always-on portable systems without compromising supervision integrity. |
| Operating Voltage | 1.0V to 5.5V; supports direct interface with low-voltage cores (1.2V/1.8V) and legacy 3.3V/5V domains. |
| RESET Output Type | Active-high push-pull; eliminates need for external pullup resistor and drives high-impedance loads directly. |
| MR Input | Active-low with 63kΩ internal pullup; allows momentary switch-to-GND implementation without external components. |
| Temp Range | –40°C to +125°C; qualified for industrial and automotive under-hood applications requiring extended thermal reliability. |
Pinout & Package
MAX6385XS36D2-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, with thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and monitored voltage source; accepts 1.0V–5.5V; powers internal circuitry and reference. |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion (VCC < 3.60V or MR low); sinks/source current per spec. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC (63kΩ); asserts reset when pulled ≤0.3×VCC. |
| 4 | GND | Analog/digital ground reference; must be connected to system ground plane for stable comparator operation. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.60V with ±2.5% tolerance across –40°C to +125°C - eliminates external resistor divider and calibration effort. |
| Guaranteed RESET validity | Operates correctly down to VCC = 1V - ensures deterministic reset state during deep brownout, critical for fail-safe embedded control. |
| Debounced MR input | 100ns glitch rejection and 1µs minimum pulse width - tolerates mechanical switch bounce and EMI without external RC filtering. |
| Negative-going VCC transient immunity | Withstands transients up to 35µs duration at 100mV overdrive - prevents spurious resets from power rail noise or coupling. |
| Low-power supervision | 3μA supply current at 1.8V - extends battery life in IoT sensors and wearables where quiescent current dominates energy budget. |
Applications
| Portable Power Management | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Supervising Li-ion powered handheld multimeters and data loggers during cold-start and discharge cycles. IC Role / Device Role / Timing Role: Monitors core supply (3.3V or 1.8V) and asserts active-high RESET to halt MCU execution until stable voltage is restored. Use Value: Prevents corrupted memory writes and erratic firmware behavior during battery sag, leveraging 20ms timeout and 3.60V threshold aligned with MCU minimum operating voltage. | Use Scenario: Ensuring clean boot sequence in portable gas analyzers with dual-rail supplies (core + sensor bias). IC Role / Device Role / Timing Role: Provides primary VCC supervision and accepts manual reset via front-panel button (MR pin) for field recalibration. Use Value: Internal 63kΩ MR pullup eliminates BOM cost and layout area; ±2.5% threshold accuracy maintains specification compliance across temperature extremes. |
| Industrial Controller Reset | Automotive Body Control Module |
Use Scenario: Reset coordination in PLC I/O modules exposed to 12V rail fluctuations and ESD events. IC Role / Device Role / Timing Role: Acts as primary supervisor for ARM Cortex-M based controller, asserting RESET on VCC drop or operator-initiated MR event. Use Value: Active-high push-pull output interfaces directly with MCU's active-high reset pin; 1.0V–5.5V operation accommodates wide-input DC-DC outputs. | Use Scenario: Power sequencing and fault recovery in automotive door module ECUs operating at ambient –40°C to +125°C. IC Role / Device Role / Timing Role: Monitors 5V system rail and provides reset assertion with guaranteed timing margin for ASIL-B compliant boot verification. Use Value: AEC-Q100 qualified variant available; 20ms timeout satisfies automotive power-up stabilization requirements; 322.6°C/W θJA supports compact thermal design. |
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 | Same 3.60V threshold and active-high push-pull output, but 140ms reset timeout instead of 20ms. | Suitable for systems requiring longer reset hold time (e.g., FPGA configuration or EEPROM write completion). | Select when longer timeout is needed; otherwise, MAX6385XS36D2-T provides optimal balance for fast-boot MCUs. |
| TLV809K36DBZR | 3.6V threshold, active-low open-drain output, no MR input, 200ms timeout, 1.5μA typical ICC at 1.8V. | Lacks manual reset capability and uses open-drain output requiring external pullup; lower quiescent current but less flexible interface. | Choose for ultra-low-power, simple reset-only use cases where MR and push-pull drive are unnecessary. |
Compared with MAX6385XS36D2-T, MAX6385XS36D3-T offers extended reset hold time for complex initialization, while TLV809K36DBZR trades MR functionality and push-pull drive for lower ICC - making MAX6385XS36D2-T the optimal choice for battery-powered controllers needing both fast reset and user-triggered recovery.
Availability
MAX6385XS36D2-T is available at Aetrix Electronics and suitable for portable instrumentation, industrial controllers, and automotive body electronics requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for MAX6385XS36D2-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 high-reliability industrial and automotive markets.
The MAX6381–MAX6390 family delivers low-power, factory-trimmed μP supervisors targeting space-constrained, battery-sensitive systems where guaranteed reset timing and voltage accuracy are critical.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6385XS36D2-T?
The MAX6385XS36D2-T has a factory-set reset threshold of 3.60V, with ±2.5% tolerance over the full operating temperature range of –40°C to +125°C. This value is specified in the Reset Thresholds table of the datasheet and confirmed by electrical characterization at temperature extremes. The MAX6385XS36D2-T uses internal laser trimming to achieve this accuracy without external components.
Does MAX6385XS36D2-T support manual reset, and how is it implemented?
Yes, MAX6385XS36D2-T includes an active-low manual reset input (MR) on Pin 3, featuring an internal 63kΩ pullup resistor to VCC. Driving MR low for ≥1µs asserts RESET; the device holds RESET active for the full 20ms timeout after MR is released. No external components are required, and the input rejects glitches as short as 100ns - making it ideal for pushbutton or logic-controlled reset in portable equipment.
What package type and dimensions does MAX6385XS36D2-T use?
MAX6385XS36D2-T is supplied in a 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with gull-wing leads. It is RoHS-compliant (+ suffix), has a thermal resistance θJA of 322.6°C/W on a multilayer PCB, and uses land pattern 90-0187. This compact footprint supports high-density layouts in handheld and automotive modules.
Can MAX6385XS36D2-T operate reliably at very low supply voltages?
Yes, MAX6385XS36D2-T guarantees correct RESET output logic state down to VCC = 1.0V, and operates across 1.0V to 5.5V. Its internal comparator and timer remain functional throughout this range, enabling fail-safe reset assertion during deep brownout. At 1.8V, supply current is only 3μA - confirming robust low-voltage supervision without performance compromise.
Is MAX6385XS36D2-T qualified for automotive applications?
MAX6385XS36D2-T itself is not automotive-qualified; however, the MAX6385XS36D2/V+T variant (with /V suffix) is AEC-Q100 qualified for automotive use. The standard MAX6385XS36D2-T is rated for –40°C to +125°C operation and meets industrial reliability standards, but automotive programs require explicit /V ordering codes to ensure qualification testing and traceability.
MAX6385XS36D2-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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS36D2-T FAQ
1.How can I place an order for MAX6385XS36D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS36D2-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 MAX6385XS36D2-T reliable?
The price and inventory of MAX6385XS36D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS36D2-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS36D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS36D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS36D2-T?
MAX6385XS36D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS36D2-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 MAX6385XS36D2-T?
For technical support, including MAX6385XS36D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS36D2-T requirements.
6.How does Aetrix verify that MAX6385XS36D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS36D2-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 MAX6385XS36D2-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS36D2-T?
All MAX6385XS36D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS36D2-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 MAX6385XS36D2-T part is unused and in its original packaging.
Return procedure for MAX6385XS36D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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