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Analog Devices Inc./Maxim Integrated MAX6385XS37D6-T
- Part No.:
- MAX6385XS37D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS37D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,465
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Product details
Overview
MAX6385XS37D6-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.70V reset threshold, 560ms minimum VCC reset timeout, and manual reset input. It monitors +1.8V to +5.0V supply rails while consuming only 3μA at +1.8V, and guarantees valid reset output down to VCC = 1V. Used in battery-powered controllers and critical μP systems requiring precise brownout detection.
For engineers reviewing the MAX6385XS37D6-T datasheet, MAX6385XS37D6-T pinout, MAX6385XS37D6-T application, or MAX6385XS37D6-T equivalent, key selection criteria include its active-high push-pull reset output, 3.70V ±2.5% threshold accuracy over –40°C to +125°C, 560ms reset timeout, integrated MR pullup (63kΩ), and 4-pin SC70 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6385XS37D6-T implements a precision voltage comparator with internal 3.70V reference and a monostable timer for reset assertion. Its MR input features debounced logic-level detection with internal 63kΩ pullup, enabling direct switch connection without external components.
Reset assertion occurs when VCC falls below 3.70V (±2.5% over temperature) or MR is pulled low; the active-high RESET output remains asserted for ≥560ms after VCC recovers or MR is released. The device operates reliably from VCC = 1.0V to 5.5V and maintains reset state integrity during negative-going transients up to 100mV/µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.70V ±2.5% over –40°C to +125°C - ensures accurate brownout detection across automotive and industrial temperature ranges |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold time for μP initialization before release |
| 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 μP reset input |
| Manual Reset Input | MR with 63kΩ internal pullup - allows momentary switch interface without discrete components |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion even during deep brownout conditions |
| Reset Propagation Delay | 35µs (VCC falling) - ensures fast response to supply glitches |
Pinout & Package
MAX6385XS37D6-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 high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary power supply input and monitored rail - must be decoupled with 0.1µF capacitor near pin |
| 2 | RESET | Active-high push-pull reset output - drives μP reset pin directly; sinks/source current per spec |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; assert by grounding via switch or logic |
| 4 | GND | Analog/digital ground reference - requires low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.70V threshold | Eliminates external resistor divider and calibration effort for fixed-voltage monitoring |
| 560ms guaranteed reset timeout | Meets JEDEC JESD78 requirements for μP reset duration in industrial control applications |
| MR debounce and internal pullup | Removes need for external RC filter or pullup resistor - reduces BOM count and layout area |
| Valid reset down to VCC = 1V | Ensures deterministic μP reset state during deep undervoltage events before complete power collapse |
| Negative transient immunity | Withstands ≤100mV VCC glitches lasting <1µs without spurious reset assertion |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Monitors 3.3V I/O rail in programmable logic controller during mains interruption and backup battery switchover. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 core upon 3.3V drop below 3.70V. Use Value: Prevents corrupted firmware execution during brownout; 560ms timeout ensures full register save before reset release. | Use Scenario: Powers cycle management in remote environmental sensor node using CR2032 coin cell. IC Role / Device Role / Timing Role: Active-high reset generator triggered by declining 3.0V supply from aging battery. Use Value: 3μA quiescent current extends operational life beyond 5 years; MR pin enables field firmware recovery via button press. |
| Automotive Body Control Module | Medical Point-of-Care Monitor |
Use Scenario: Validates 5.0V supply stability during vehicle ignition sequence and load-dump transients. IC Role / Device Role / Timing Role: Push-pull reset supervisor interfacing with Infineon AURIX TC3xx microcontroller reset pin. Use Value: ±2.5% threshold accuracy over –40°C to +125°C ensures reliable startup across ambient extremes; SC70 package fits tight ECU cavity. | Use Scenario: Ensures deterministic boot sequence in portable ECG analyzer powered from Li-ion pack. IC Role / Device Role / Timing Role: Critical μP reset circuit asserting active-high signal to NXP i.MX RT1064 during power-up and brownout. Use Value: Valid reset output down to VCC = 1V prevents undefined state during rapid battery depletion; RoHS-compliant package meets IEC 60601-1 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS37D3-T | 140ms VCC reset timeout (vs. 560ms) | Suitable for faster-booting μPs where shorter reset hold time is acceptable | Select when system initialization completes in <200ms and reduced timeout improves responsiveness |
| TPS3808G33DBVR | 3.3V reset threshold, 200ms timeout, SOT-23-5 package | Lacks manual reset input; requires external pullup for active-high output | Choose for cost-sensitive designs where MR functionality is unnecessary and 3.3V threshold suffices |
Compared with MAX6385XS37D3-T and TPS3808G33DBVR, the MAX6385XS37D6-T delivers longer reset hold time for robust μP initialization and integrated MR support for field serviceability - making it optimal for industrial controllers and medical devices requiring deterministic power sequencing.
Availability
MAX6385XS37D6-T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, automotive body control modules, and medical point-of-care monitors requiring stable component supply and long-term lifecycle assurance.
Supply support for MAX6385XS37D6-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 industrial, automotive, and computing applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single-supply microprocessor supervisory circuits optimized for ultra-low-power embedded systems requiring accurate voltage monitoring and deterministic reset timing across extended temperature ranges.
FAQ
What is the exact reset threshold voltage of the MAX6385XS37D6-T?
The MAX6385XS37D6-T has a factory-set nominal reset threshold of 3.70V, with ±2.5% tolerance over the full operating temperature range of –40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet and applies specifically to the "37" suffix variant. The MAX6385XS37D6-T guarantees this threshold accuracy without requiring external calibration or trimming components.
Does the MAX6385XS37D6-T support manual reset functionality?
Yes, the MAX6385XS37D6-T includes a dedicated MR (manual reset) input with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an active-high reset assertion, which remains active for the full 560ms timeout after MR is released. This feature is explicitly documented for MAX6385 in the Pin Description and Applications Information sections, and no external pullup is required.
What package type and dimensions does the MAX6385XS37D6-T use?
The MAX6385XS37D6-T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant surface-mount package is confirmed in the Ordering Information table and Package Information section of the datasheet, and is distinct from the 3-pin SC70 used by MAX6381–MAX6383 variants.
Can the MAX6385XS37D6-T operate reliably at low supply voltages?
Yes, the MAX6385XS37D6-T guarantees correct reset output logic state down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Detailed Description sections. Its supply current remains at 3μA at +1.8V, and the device functions across the full 1.0V to 5.5V operating range - enabling use in deep-brownout scenarios where other supervisors fail.
Is the MAX6385XS37D6-T pin-compatible with older Maxim reset ICs?
The MAX6385XS37D6-T shares pinout compatibility with other 4-pin SC70 variants in the MAX6384–MAX6390 family, including MAX6384XSxxDx-T and MAX6386XSxxDx-T. It is not pin-compatible with 3-pin SC70 (e.g., MAX6381XRxxDx-T) or 6-pin μDFN packages. Compatibility is confirmed in the Pin Configurations and Selector Guide sections of the datasheet.
MAX6385XS37D6-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:
- 3.7V
- 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
MAX6385XS37D6-T FAQ
1.How can I place an order for MAX6385XS37D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS37D6-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 MAX6385XS37D6-T reliable?
The price and inventory of MAX6385XS37D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS37D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS37D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS37D6-T transactions.
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4.How is shipping managed for MAX6385XS37D6-T?
MAX6385XS37D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS37D6-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 MAX6385XS37D6-T?
For technical support, including MAX6385XS37D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS37D6-T requirements.
6.How does Aetrix verify that MAX6385XS37D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS37D6-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 MAX6385XS37D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS37D6-T?
All MAX6385XS37D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS37D6-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 MAX6385XS37D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS37D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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