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Analog Devices Inc./Maxim Integrated MAX6385XS24D5-T
- Part No.:
- MAX6385XS24D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS24D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,433
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Product details
Overview
MAX6385XS24D5-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 2.40V reset threshold, 280ms minimum VCC reset timeout, and manual reset input. It monitors single supply voltage (1.0V–5.5V), consumes only 3μA at 1.8V, guarantees valid reset output down to VCC = 1V, and operates across –40°C to +125°C for use in battery-powered industrial controllers.
For engineers reviewing the MAX6385XS24D5-T datasheet, MAX6385XS24D5-T pinout, MAX6385XS24D5-T application, or MAX6385XS24D5-T equivalent, key selection criteria include its active-high push-pull reset output, 2.40V ±2.5% threshold accuracy over temperature, 280ms reset timeout, MR debouncing capability, and 4-pin SC70 package compatibility with space-constrained embedded systems.
Technical Context
The MAX6385XS24D5-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 280ms reset assertion after VCC rises above 2.40V or after release of the active-low manual reset (MR) input.
It features an internal 63kΩ pullup on MR, supports TTL/CMOS-compatible MR drive, and ensures reset state validity down to VCC = 1V. The active-high push-pull RESET output drives high during reset assertion and low otherwise, eliminating need for external pullup resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.40V ±2.5% over –40°C to +125°C - ensures reliable brownout detection for 2.5V core supplies |
| VCC Reset Timeout | 280ms (min) - provides sufficient hold time for microprocessor initialization sequences |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage Range | 1.0V to 5.5V - supports direct monitoring of 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails |
| Reset Output Type | Active-high push-pull - eliminates external pullup, simplifies interface to μP reset inputs requiring high-asserted reset |
| Manual Reset Input | Active-low with 63kΩ internal pullup - allows momentary switch connection without external components |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX6385XS24D5-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 | Power supply input and primary voltage monitor rail - must be decoupled with 0.1μF capacitor near pin |
| 2 | RESET | Active-high push-pull reset output - drives high during reset assertion, low otherwise; sinks/source up to 1.2mA |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; logic low forces reset for full timeout period |
| 4 | GND | Ground reference for all internal circuitry and reset comparator - requires low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.40V threshold | Eliminates external resistor divider; reduces BOM count and layout area in 2.5V system designs |
| 280ms minimum reset timeout | Meets JEDEC JESD74A requirement for 200ms+ reset pulse width in microcontroller power-up sequencing |
| MR input with internal 63kΩ pullup | Enables direct connection of normally-open tactile switch to GND - no external resistor needed |
| Valid reset output down to VCC = 1V | Ensures deterministic reset behavior during deep brownout or battery depletion scenarios |
| –40°C to +125°C operation | Supports deployment in automotive engine control units and industrial motor drives without derating |
Applications
| Industrial PLC I/O Module | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Monitoring 2.5V I/O supply in programmable logic controller modules exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 MCU during undervoltage events on 2.5V rail. Use Value: 2.40V threshold matches 2.5V rail tolerance; 280ms timeout exceeds MCU boot ROM initialization window. | Use Scenario: Power management in LoRaWAN end-node using CR2032 battery and ultra-low-power MSP430 microcontroller. IC Role / Device Role / Timing Role: Single-supply supervisor ensuring clean reset during battery voltage sag below 2.4V during RF transmission bursts. Use Value: 3μA quiescent current extends battery life beyond 10 years; MR pin enables field firmware recovery via button press. |
| Automotive Body Control Module | Medical Handheld Diagnostic Device |
Use Scenario: Reset supervision for 3.3V microcontroller in interior lighting control unit operating under vehicle battery transients. IC Role / Device Role / Timing Role: Active-high push-pull reset generator immune to 100ns negative-going VCC glitches per spec. Use Value: Guaranteed operation to +125°C meets AEC-Q100 Grade 2 requirements; SC70 package fits tight board space. | Use Scenario: Ensuring safe startup of FPGA-based signal processing core powered from regulated 1.8V supply. IC Role / Device Role / Timing Role: Primary reset source for FPGA configuration controller, asserting reset until 1.8V rail stabilizes above 2.40V. Use Value: 2.40V threshold provides 600mV margin above 1.8V rail nominal - prevents spurious resets from ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2-T | 2.63V reset threshold, 240ms timeout, same 4-pin SC70 package, no MR input | Lacks manual reset functionality; suited for fixed-supply systems where operator-initiated reset is unnecessary | Select when MR is unused and 2.63V threshold better matches 2.8V or 3.0V rails |
| TPS3808G33DBVR | 3.3V threshold, 200ms timeout, SOT-23-5 package, includes watchdog timer | Requires 5-pin layout; adds watchdog capability but increases footprint and cost | Choose when system-level watchdog supervision is required alongside reset generation |
Compared with MAX809TRD2-T and TPS3808G33DBVR, the MAX6385XS24D5-T uniquely delivers 2.40V threshold with MR support in a 4-pin SC70, enabling compact, manually recoverable reset solutions for 2.5V systems without layout or BOM overhead.
Availability
MAX6385XS24D5-T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, battery-powered sensor nodes, automotive body control units, and medical handheld diagnostic devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS24D5-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, communications, and computing applications.
The MAX6381–MAX6390 family was developed to deliver ultra-low-power, high-accuracy voltage supervision in miniature packages for space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6385XS24D5-T and how accurate is it over temperature?
The MAX6385XS24D5-T has a factory-set reset threshold of 2.40V (nominal), with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. This corresponds to a min/max threshold of 2.34V to 2.46V at +25°C and 2.31V to 2.49V across temperature extremes, as specified in the Electrical Characteristics table.
Does MAX6385XS24D5-T support manual reset, and what is the internal pullup value on the MR pin?
Yes, MAX6385XS24D5-T includes an active-low manual reset (MR) input with an internal 63kΩ pullup resistor to VCC. This allows direct connection of a normally open momentary switch between MR and GND, eliminating the need for external components while ensuring reliable reset initiation during field service or testing.
What is the reset timeout duration for MAX6385XS24D5-T, and is it guaranteed minimum or typical?
The MAX6385XS24D5-T provides a guaranteed minimum reset timeout of 280ms after VCC rises above the 2.40V threshold or after MR is released. This is not a typical value - the datasheet specifies "280ms (min)" in the Reset Timeout Period table for suffix D5, ensuring design margin for microprocessor boot sequence timing.
Can MAX6385XS24D5-T operate reliably at VCC = 1.0V, and what happens to the RESET output below that?
Yes, MAX6385XS24D5-T guarantees correct RESET output logic state down to VCC = 1.0V. Below 1.0V, the device ceases to function predictably; however, the datasheet confirms that the RESET output remains valid (i.e., actively driven high during reset, low otherwise) throughout the 1.0V–5.5V operating range - critical for brownout resilience.
What package type and dimensions does MAX6385XS24D5-T use, and is it RoHS-compliant?
MAX6385XS24D5-T uses a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. The "+T" suffix confirms it is lead(Pb)-free and RoHS-compliant. Land pattern 90-0187 is recommended, and thermal resistance θJA is 322.6°C/W on a multilayer board.
MAX6385XS24D5-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:
- 2.4V
- 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
MAX6385XS24D5-T FAQ
1.How can I place an order for MAX6385XS24D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS24D5-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 MAX6385XS24D5-T reliable?
The price and inventory of MAX6385XS24D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS24D5-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS24D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS24D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS24D5-T?
MAX6385XS24D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS24D5-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 MAX6385XS24D5-T?
For technical support, including MAX6385XS24D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS24D5-T requirements.
6.How does Aetrix verify that MAX6385XS24D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS24D5-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 MAX6385XS24D5-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS24D5-T?
All MAX6385XS24D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS24D5-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 MAX6385XS24D5-T part is unused and in its original packaging.
Return procedure for MAX6385XS24D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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