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Analog Devices Inc./Maxim Integrated MAX6385XS43D5-T
- Part No.:
- MAX6385XS43D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS43D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,653
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Product details
Overview
MAX6385XS43D5-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.30V reset threshold, 280ms 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 MAX6385XS43D5-T datasheet, MAX6385XS43D5-T pinout, MAX6385XS43D5-T application, or MAX6385XS43D5-T equivalent, this page delivers verified electrical parameters, SC70-4 package layout, reset timing behavior under voltage transients, and direct alternatives for power-rail monitoring in battery-powered controllers and critical μP systems.
Technical Context
The MAX6385XS43D5-T implements a precision bandgap-based voltage comparator with ±2.5% reset threshold accuracy over –40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 280ms (min) reset assertion period after VCC recovers above 4.30V.
A debounced active-low manual reset input (MR) with 63kΩ internal pullup enables external reset initiation; MR-to-reset delay is 200ns, and MR pulse width requirement is ≥1μs. Reset output is push-pull active-high and remains valid down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.30V (nominal), ±2.5% over temperature - ensures reliable brownout detection at 4.3V rail |
| VCC Reset Timeout | 280ms (minimum) - holds μP in reset long enough for stable power-up sequencing |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion even during deep brownout recovery |
| Reset Output Type | Push-pull active-high - eliminates need for external pullup resistor on RESET line |
| Manual Reset Input | Active-low MR with 63kΩ internal pullup - allows momentary switch interface without external components |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX6385XS43D5-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 0.65mm pin pitch and thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - powers device and triggers reset when below 4.30V |
| 2 | RESET | Active-high push-pull output - drives high during normal operation; pulls low only during reset assertion |
| 3 | GND | Ground reference for all internal comparators and output stage - must be low-impedance return path |
| 4 | MR | Active-low manual reset input - forces reset when pulled ≤0.3×VCC; internal 63kΩ pullup to VCC |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.30V ±2.5% over full temperature range - eliminates external resistor network and calibration effort |
| Negative-going VCC transient immunity | Rejects glitches <35µs wide at 100mV overdrive - prevents spurious resets in noisy power environments |
| Valid reset down to VCC = 1V | Guaranteed logic state integrity through deep undervoltage - ensures deterministic μP startup even during slow ramp-up |
| Low quiescent current | 3μA at 1.8V - extends battery life in portable instrumentation and wearables beyond 10 years |
| MR debounce integrated | No external RC required - simplifies BOM and PCB layout for pushbutton-initiated system reset |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors 5V main supply and 3.3V I/O rail in programmable logic controller with dual-voltage architecture. IC Role / Device Role / Timing Role: Supervises VCC and asserts active-high RESET to ARM Cortex-M7 core during brownout. Use Value: 280ms timeout ensures firmware bootloader completes before peripheral initialization begins. |
Use Scenario: Embedded in door module ECU to supervise 12V-regulated 5V domain powering CAN transceiver and microcontroller. IC Role / Device Role / Timing Role: Provides AEC-Q100–qualified reset signal synchronized to ignition-on power ramp. Use Value: ±2.5% threshold tolerance maintains reset margin across automotive temperature extremes (–40°C to +125°C). |
| Portable Medical Sensor Hub | Battery-Powered Smart Meter |
|
Use Scenario: Powers clinical-grade pulse oximeter with coin-cell battery and low-dropout regulator. IC Role / Device Role / Timing Role: Detects 3.0V rail collapse and asserts RESET to prevent corrupted ADC sampling during low-battery shutdown. Use Value: 3μA supply current extends single-CR2032 battery life to >5 years in sleep mode. |
Use Scenario: Installed in utility meter with intermittent GSM transmission causing 500ms supply dips. IC Role / Device Role / Timing Role: Filters short transients using built-in glitch rejection while asserting reset on sustained undervoltage. Use Value: 35µs transient immunity prevents false resets during RF burst transmission events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR43D5+T | Same 4.30V threshold and 280ms timeout, but active-low open-drain output requiring external pullup | Suitable where system-level RESET bus is shared with other open-drain devices | Select when interoperability with legacy open-drain reset networks is required |
| TPS3808G33DBVR | 3.3V threshold (not 4.3V), 200ms timeout, 1.6V–6.0V operating range, 2.5μA typical ICC | Designed for 3.3V systems; lacks MR input in DBV package | Choose only if redesigning for lower-voltage rail and no manual reset needed |
Compared with MAX6385XS43D5-T, MAX6326XR43D5+T requires external pullup and shares identical timing/accuracy but differs in output polarity and drive type, while TPS3808G33DBVR targets 3.3V domains without MR support - neither is pin-compatible, and both demand schematic and layout review for integration.
Availability
MAX6385XS43D5-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensor hubs, and battery-powered smart meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS43D5-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 communications applications, with emphasis on low-power, high-reliability solutions.
MAX6385XS43D5-T belongs to the MAX6381–MAX6390 family of ultra-low-power μP supervisors, engineered specifically for robust power-rail monitoring in space-constrained, battery-sensitive, and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6385XS43D5-T?
The MAX6385XS43D5-T has a factory-set nominal reset threshold of 4.30V, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "43" corresponds to VTH(nom) = 4.30V, VTH(min) = 4.19V, and VTH(max) = 4.41V.
Does MAX6385XS43D5-T support manual reset functionality?
Yes, MAX6385XS43D5-T includes an active-low manual reset input (MR) with internal 63kΩ pullup resistor to VCC. Driving MR below 0.3×VCC for ≥1μs forces reset assertion; the device then holds RESET low for the full 280ms timeout after MR is released. This feature is explicitly documented in the Pin Description and Applications Information sections.
What package type and dimensions does MAX6385XS43D5-T use?
MAX6385XS43D5-T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm with 0.65mm pin pitch. The package is lead(Pb)-free and RoHS-compliant, as indicated by the "+T" suffix in the ordering code.
Can MAX6385XS43D5-T operate reliably at VCC = 1.0V?
Yes, MAX6385XS43D5-T guarantees correct RESET output logic state down to VCC = 1.0V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic behavior during deep brownout recovery and slow power-rail ramp-up sequences common in energy-harvesting and ultra-low-power systems.
Is MAX6385XS43D5-T qualified for automotive applications?
No, MAX6385XS43D5-T is not automotive-qualified. While it operates from –40°C to +125°C, the "/V" suffix denotes AEC-Q100 qualification - and MAX6385XS43D5-T lacks that suffix. Automotive variants such as MAX6385XS43D5/V+T exist but differ in screening, traceability, and documentation; MAX6385XS43D5-T is intended for industrial and commercial use.
MAX6385XS43D5-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:
- 4.3V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS43D5-T FAQ
1.How can I place an order for MAX6385XS43D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS43D5-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 MAX6385XS43D5-T reliable?
The price and inventory of MAX6385XS43D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS43D5-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS43D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS43D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS43D5-T?
MAX6385XS43D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS43D5-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 MAX6385XS43D5-T?
For technical support, including MAX6385XS43D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS43D5-T requirements.
6.How does Aetrix verify that MAX6385XS43D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS43D5-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 MAX6385XS43D5-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS43D5-T?
All MAX6385XS43D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS43D5-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 MAX6385XS43D5-T part is unused and in its original packaging.
Return procedure for MAX6385XS43D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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