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Analog Devices Inc./Maxim Integrated MAX6385XS42D6-T
- Part No.:
- MAX6385XS42D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS42D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,597
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Product details
Overview
MAX6385XS42D6-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.20V 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 MAX6385XS42D6-T datasheet, MAX6385XS42D6-T pinout, MAX6385XS42D6-T application, or MAX6385XS42D6-T equivalent, key selection criteria include its active-high push-pull reset output, 4.20V ±2.5% threshold accuracy over temperature, 560ms VCC reset timeout, integrated MR pullup resistor (63kΩ), and 4-pin SC70 package compatibility with space-constrained designs.
Technical Context
The MAX6385XS42D6-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over –40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 560ms minimum reset assertion period after VCC rises above 4.20V, independent of supply ramp rate.
It features a debounced manual reset input (MR) with 63kΩ internal pullup, supporting TTL/CMOS-compatible logic levels and requiring no external debounce circuitry. The active-high push-pull RESET output drives high during reset assertion and guarantees correct logic state down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.20V nominal, ±2.5% over –40°C to +125°C - ensures reliable brownout detection across full industrial temperature range |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold time for μP initialization before release |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in portable equipment |
| Operating Voltage Range | +1.0V to +5.5V - supports operation during deep brownout and compatibility with 1.2V–5V logic domains |
| Reset Output Type | Active-high push-pull - eliminates need for external pullup resistor and simplifies interface to μP reset input |
| MR Input Pullup | 63kΩ internal - allows direct connection of momentary switch to GND without external components |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX6385XS42D6-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 high during reset assertion; sinks current when deasserted |
| 3 | GND | Ground reference for all internal circuitry and reset comparator - requires low-impedance connection to system ground plane |
| 4 | MR | Active-low manual reset input - internally pulled up to VCC; pulling low forces immediate reset assertion for duration of timeout |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.20V with ±2.5% tolerance over full temperature range - eliminates need for external resistor divider calibration |
| Guaranteed reset validity | RESET output remains logically valid down to VCC = 1V - prevents spurious resets during deep undervoltage conditions |
| Integrated MR pullup | 63kΩ internal resistor - enables single-switch manual reset implementation without BOM additions |
| Negative-going transient immunity | Immune to VCC glitches ≤100µs at 100mV overdrive - reduces false triggers in noisy power environments |
| Low-power operation | 3μA supply current at +1.8V - extends battery life in always-on monitoring applications |
Applications
| Industrial PLC Power Monitoring | Automotive Body Control Module |
|---|---|
Use Scenario: Continuous monitoring of 5V system rail in programmable logic controller during cold cranking and load dump events. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 MCU until 5V rail stabilizes above 4.20V for ≥560ms. Use Value: Prevents firmware corruption by ensuring MCU remains held in reset during unstable supply conditions common in factory automation environments. | Use Scenario: Reset supervision for infotainment SoC in vehicle door module powered from 3.3V LDO fed by 12V battery. IC Role / Device Role / Timing Role: Active-high push-pull reset generator triggered by 3.3V rail drop below 4.20V (monitored via resistive divider) or manual switch press. Use Value: Enables deterministic recovery from brownout without external pullup, meeting AEC-Q100 requirements for automotive electronics reliability. |
| Medical Portable Diagnostic Device | Smart Energy Meter |
Use Scenario: Battery-powered handheld ultrasound unit with dual-rail (1.8V core, 3.3V I/O) power architecture. IC Role / Device Role / Timing Role: Primary supervisor for 3.3V rail; MR pin connected to service button to force controlled reboot during field firmware updates. Use Value: 3μA quiescent current extends single-charge operating time; 560ms timeout ensures complete DSP initialization before runtime execution. | Use Scenario: Tamper-resistant electricity meter requiring guaranteed reset during AC line dropout and local button-initiated recalibration. IC Role / Device Role / Timing Role: Resets计量SoC on 3.3V rail failure or physical button press; operates across –40°C to +85°C ambient with ±2.5% threshold stability. Use Value: Factory-trimmed 4.20V threshold eliminates calibration labor; SC70 footprint saves space on compact meter PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS42D3-T | Same 4.20V threshold and active-high push-pull output, but 140ms VCC reset timeout instead of 560ms | Suitable for faster-booting MCUs where shorter reset hold time is acceptable | Select when system boot sequence completes in <200ms and longer timeout risks unnecessary delay |
| TLV803EA42DBZR | 4.20V threshold, active-high open-drain output, 200ms timeout, 0.5μA supply current at 1.8V | Requires external pullup resistor; lower current draw but less drive strength than push-pull | Choose for ultra-low-power applications where board space allows pullup and MCU accepts open-drain reset input |
Compared with MAX6385XS42D3-T and TLV803EA42DBZR, the MAX6385XS42D6-T provides longer 560ms reset hold time for robust initialization of complex processors, maintains push-pull drive without external components, and balances ultra-low quiescent current with industrial-grade temperature performance.
Availability
MAX6385XS42D6-T is available at Aetrix Electronics and suitable for industrial PLC power monitoring, automotive body control modules, medical portable diagnostic devices, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX6385XS42D6-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 consumer applications.
The MAX6381–MAX6390 family delivers low-power, factory-trimmed μP supervisory circuits optimized for reliable reset generation in space-constrained, thermally demanding systems with strict power budgets.
FAQ
What is the exact reset threshold voltage of the MAX6385XS42D6-T?
The MAX6385XS42D6-T has a factory-set nominal reset threshold of 4.20V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This value is confirmed in the Reset Thresholds table of the official datasheet and applies specifically to the "42" suffix in the MAX6385XS42D6-T part number.
Does the MAX6385XS42D6-T require an external pullup resistor on the RESET pin?
No, the MAX6385XS42D6-T does not require an external pullup resistor on the RESET pin because it features an active-high push-pull output configuration. The internal driver actively pulls the RESET line high during assertion and low during deassertion, eliminating dependency on external passive components for proper logic-level generation.
What is the function of the MR pin on the MAX6385XS42D6-T?
The MR (Manual Reset) pin on the MAX6385XS42D6-T is an active-low input that forces a reset when pulled to GND. It includes a 63kΩ internal pullup resistor to VCC, allowing direct connection of a momentary switch between MR and GND. When asserted, the MAX6385XS42D6-T holds RESET high for the full 560ms timeout period after MR is released.
Is the MAX6385XS42D6-T qualified for automotive applications?
The MAX6385XS42D6-T itself is not explicitly marked with the /V automotive qualification suffix in its ordering code. However, it operates across –40°C to +125°C and meets AEC-Q100 stress test requirements when ordered in /V-trim versions (e.g., MAX6385XS42D6/V+T). For automotive use, specify the /V variant and confirm qualification status with the manufacturer's latest ordering information.
What package type and dimensions does the MAX6385XS42D6-T use?
The MAX6385XS42D6-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, lead-free package is optimized for high-density PCB layouts and supports reflow soldering per JEDEC J-STD-020 standards.
MAX6385XS42D6-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:
- 4.2V
- 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
MAX6385XS42D6-T FAQ
1.How can I place an order for MAX6385XS42D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS42D6-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 MAX6385XS42D6-T reliable?
The price and inventory of MAX6385XS42D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS42D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS42D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS42D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS42D6-T?
MAX6385XS42D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS42D6-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 MAX6385XS42D6-T?
For technical support, including MAX6385XS42D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS42D6-T requirements.
6.How does Aetrix verify that MAX6385XS42D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS42D6-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 MAX6385XS42D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS42D6-T?
All MAX6385XS42D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS42D6-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 MAX6385XS42D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS42D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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