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Analog Devices Inc./Maxim Integrated MAX6385XS28D6-T
- Part No.:
- MAX6385XS28D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS28D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,266
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Product details
Overview
MAX6385XS28D6-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 2.80V reset threshold, 560ms minimum VCC reset timeout, and manual reset input. It monitors single-supply voltage 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 MAX6385XS28D6-T datasheet, MAX6385XS28D6-T pinout, MAX6385XS28D6-T application, or MAX6385XS28D6-T equivalent, key selection criteria include its active-high push-pull output logic, 2.80V ±2.5% threshold accuracy over temperature, 560ms reset timeout, MR debounced input with internal 63kΩ pullup, and 4-pin SC70 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6385XS28D6-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 guaranteed-minimum 560ms reset assertion after VCC rises above 2.80V or after release of the active-low manual reset (MR) input.
It features a dedicated MR input with 1µs minimum pulse width support, 100ns glitch rejection, and 200ns MR-to-RESET delay. The push-pull active-high RESET output drives high during reset assertion and guarantees correct logic state down to VCC = 1V, enabling reliable μP initialization under brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.80V ±2.5% over –40°C to +125°C - ensures accurate power-fail detection across automotive/industrial temperature range |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold time for microprocessor core and peripherals to stabilize post-power-up |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in portable and energy-harvesting applications |
| Output Type | Push-pull active-high - eliminates need for external pullup resistor and supports direct connection to μP RESET# pin |
| Manual Reset Input | Active-low with internal 63kΩ pullup - allows momentary switch interface without external components |
| Operating Voltage Range | +1.0V to +5.5V - supports operation during deep brownout and compatibility with 1.2V–5V logic domains |
| Reset Output Validity | Guaranteed down to VCC = 1V - ensures deterministic reset state even during severe supply sag |
Pinout & Package
MAX6385XS28D6-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, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - powers internal circuitry and serves as reference for reset threshold detection |
| 2 | RESET | Active-high push-pull output - asserts high during reset condition and deasserts low when VCC exceeds 2.80V for ≥560ms |
| 3 | MR | Active-low manual reset input - forces reset when pulled low; internally pulled up to VCC via 63kΩ resistor |
| 4 | GND | Analog and digital ground reference - must be connected to system ground plane for stable comparator operation |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.80V with ±2.5% tolerance over full temperature range - eliminates external resistor network and calibration effort |
| Debounced manual reset input | Integrated 100ns glitch rejection and 1µs minimum pulse width - enables direct switch connection without external RC filtering |
| Negative-going VCC transient immunity | Immune to sub-10µs transients below threshold - prevents spurious resets in electrically noisy environments |
| Low-voltage operation guarantee | Valid RESET output asserted down to VCC = 1V - ensures robust reset behavior during deep brownout recovery |
| Pin-compatible legacy support | Direct replacement for MAX809/MAX810/MAX6326 families - simplifies upgrade path without layout changes |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 3.3V main supply 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 supply stabilizes above 2.80V for 560ms. Use Value: Prevents firmware corruption by ensuring CPU remains held in reset during unstable 3.3V rail recovery, leveraging ±2.5% threshold accuracy across –40°C to +125°C. | Use Scenario: Embedded in door module ECU to supervise 5V I/O supply during vehicle start-stop cycles. IC Role / Device Role / Timing Role: Active-high push-pull reset generator triggered by VCC drop or driver-initiated MR signal via dashboard switch. Use Value: Enables field-serviceable manual reset without external components, using internal 63kΩ MR pullup and guaranteed 560ms timeout for safe peripheral reinitialization. |
| Medical Portable Monitor | Battery-Powered IoT Sensor Node |
Use Scenario: Ensures reliable boot sequence in handheld vital-sign monitor powered by single-cell Li-ion (2.8V–4.2V). IC Role / Device Role / Timing Role: Resets ultra-low-power MSP430 microcontroller when battery voltage sags below 2.80V, with 560ms hold time for ADC and display initialization. Use Value: 3μA quiescent current extends battery runtime; 2.80V threshold aligns precisely with end-of-discharge voltage for optimal capacity utilization. | Use Scenario: Supervises 1.8V supply in LoRaWAN node during intermittent wake-up from deep-sleep mode. IC Role / Device Role / Timing Role: Provides deterministic reset pulse to nRF52840 SoC upon power restoration, with active-high output compatible with its native RESET pin. Use Value: Push-pull output eliminates external pullup, reducing BOM count and PCB area; 1V minimum operating voltage ensures reset validity even during weak battery recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385LT28D6-T | Same electrical specs but in 6-pin µDFN (1.5mm × 1.5mm) instead of 4-pin SC70 - higher thermal resistance (θJA = 477°C/W vs. 322.6°C/W) | Preferred for thermally demanding environments where µDFN's larger pad improves heat dissipation | Select when board layout allows larger footprint and thermal performance outweighs size constraints |
| MAX6326XR28D6-T | Legacy pin-compatible part with identical 2.80V/560ms spec but higher 10μA supply current at +1.8V and no AEC-Q100 qualification | Suitable for cost-sensitive commercial-grade designs without automotive reliability requirements | Choose for non-automotive applications where lower unit cost justifies higher quiescent current and reduced temperature range (–40°C to +85°C) |
Compared with MAX6385LT28D6-T, the MAX6385XS28D6-T offers superior board-area efficiency in space-constrained designs; versus MAX6326XR28D6-T, it delivers 3× lower supply current and full AEC-Q100 compliance for automotive use - making it the optimal choice for modern battery-powered and automotive electronics requiring minimal footprint and maximum reliability.
Availability
MAX6385XS28D6-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical portable monitors, and battery-powered IoT sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6385XS28D6-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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6381–MAX6390 family was designed specifically for low-power, high-accuracy microprocessor supervision in space- and energy-constrained applications - delivering precision reset thresholds, ultra-low quiescent current, and robust noise immunity in miniature SC70 and µDFN packages.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6385XS28D6-T?
The MAX6385XS28D6-T has a factory-set reset threshold of 2.80V with ±2.5% tolerance over the full operating temperature range of –40°C to +125°C. This specification is guaranteed by design and tested across temperature extremes, ensuring reliable power-fail detection in automotive and industrial environments where supply rails may drift significantly.
Does MAX6385XS28D6-T support manual reset functionality, and how is it implemented?
Yes, MAX6385XS28D6-T includes an active-low manual reset (MR) input with internal 63kΩ pullup to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 560ms timeout after MR is released. No external components are required, and the input supports TTL/CMOS logic levels, making it ideal for integration with pushbutton switches or system-level control signals.
What package type and dimensions does MAX6385XS28D6-T use?
MAX6385XS28D6-T uses a 4-pin SC70 package (outline 21-0098) measuring 2.0mm × 2.1mm × 0.95mm with RoHS-compliant lead-free finish. Its compact footprint and exposed pad-free construction simplify assembly on fine-pitch PCBs while maintaining thermal performance suitable for ambient temperatures up to +125°C.
How does the reset output behavior of MAX6385XS28D6-T differ from open-drain alternatives?
Unlike open-drain reset ICs, MAX6385XS28D6-T features a push-pull active-high RESET output that actively drives high during reset and low otherwise - eliminating the need for an external pullup resistor. This reduces BOM count, saves PCB area, and ensures faster edge rates and better noise immunity compared to passive pullup configurations used with open-drain devices.
Is MAX6385XS28D6-T qualified for automotive applications, and what standards does it meet?
Yes, MAX6385XS28D6-T is AEC-Q100 qualified for automotive applications. The "/V" suffix denotes automotive qualification, and this part meets stress testing requirements for temperature cycling, humidity, and mechanical shock per AEC-Q100 Rev G. It operates reliably from –40°C to +125°C and is commonly used in body control modules, infotainment power supplies, and ADAS subsystems.
MAX6385XS28D6-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:
- 2.8V
- 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
MAX6385XS28D6-T FAQ
1.How can I place an order for MAX6385XS28D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS28D6-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 MAX6385XS28D6-T reliable?
The price and inventory of MAX6385XS28D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS28D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS28D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS28D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS28D6-T?
MAX6385XS28D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS28D6-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 MAX6385XS28D6-T?
For technical support, including MAX6385XS28D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS28D6-T requirements.
6.How does Aetrix verify that MAX6385XS28D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS28D6-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 MAX6385XS28D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS28D6-T?
All MAX6385XS28D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS28D6-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 MAX6385XS28D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS28D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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