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Analog Devices Inc./Maxim Integrated MAX6385XS32D5-T
- Part No.:
- MAX6385XS32D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS32D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,098
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Product details
Overview
MAX6385XS32D5-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.20V 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 MAX6385XS32D5-T datasheet, MAX6385XS32D5-T pinout, MAX6385XS32D5-T application, or MAX6385XS32D5-T equivalent, this page delivers verified electrical specs, SC70-4 package details, reset timing behavior, MR debounce capability, and direct alternatives for power-rail monitoring in space-constrained μP systems.
Technical Context
The MAX6385XS32D5-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 guaranteed-minimum 280ms reset assertion after VCC recovers above 3.20V.
It features an active-high push-pull RESET output capable of sourcing 800µA at VCC ≥ 4.5V (VOH ≥ 0.8×VCC) and sinking 3.2mA (VOL ≤ 0.4V), plus a debounced manual reset input (MR) with internal 63kΩ pullup resistor - asserted low to force reset and held for full 280ms timeout after release.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.20V (factory-set, ±2.5% over -40°C to +125°C) - ensures reliable brownout detection for 3.3V I/O domains. |
| VCC Reset Timeout | 280ms (minimum) - holds processor in reset long enough for power stabilization and clock lock in MCU boot sequences. |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in always-on sensor nodes and portable equipment. |
| Operating Voltage | +1.0V to +5.5V - supports operation during deep brownout and compatibility with 1.2V–5V logic families. |
| Reset Output Type | Active-high push-pull - eliminates need for external pullup, drives directly into CMOS/TTL reset inputs without level-shifting. |
| Manual Reset Input | MR with 63kΩ internal pullup - allows momentary switch-to-GND implementation; no external components required for basic reset control. |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and high-reliability embedded environments. |
Pinout & Package
MAX6385XS32D5-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 rail - powers device and triggers reset when falling below 3.20V. |
| 2 | RESET | Active-high push-pull output - asserts high during fault; deasserts low after timeout; drives directly into μP reset pin. |
| 3 | MR | Active-low manual reset input - pulled low externally to force reset; internal 63kΩ pullup ensures default high state. |
| 4 | GND | Ground reference for all internal comparators, timers, and output drivers - must be low-impedance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.20V with ±2.5% tolerance over full temperature range - eliminates external resistor divider and calibration effort. |
| Guaranteed reset validity | RESET output state defined down to VCC = 1.0V - prevents metastability during deep undervoltage conditions. |
| Negative-going transient immunity | Rejects VCC glitches < 35µs wide at 100mV overdrive - avoids spurious resets in electrically noisy environments. |
| Low-power operation | 3μA ICC at +1.8V - enables integration into energy-harvesting and coin-cell-powered systems without compromising runtime. |
| Debounced manual reset | MR input immune to <100ns noise spikes and requires >1µs pulse width - eliminates need for external RC filtering. |
Applications
| Industrial PLC Power Monitoring | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors 3.3V I/O supply in programmable logic controllers during cold-cranking and load-dump events. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to ARM Cortex-M7 core until stable 3.3V rail is confirmed. Use Value: 280ms timeout ensures firmware initialization completes only after power settles; ±2.5% threshold prevents false trips during 12V battery transients. |
Use Scenario: Validates 5V microcontroller supply in door module ECUs exposed to automotive temperature extremes. IC Role / Device Role / Timing Role: Active-high push-pull reset generator triggered by VCC drop below 3.20V, with MR enabling service-mode reinitialization. Use Value: -40°C to +125°C operation and AEC-Q100-compatible design ensure reliability; 3μA quiescent current minimizes standby drain. |
| Portable Medical Sensor Node | Dual-Voltage IoT Gateway |
|
Use Scenario: Powers on ultra-low-power BLE sensor hub powered by CR2032 coin cell with 2.0–3.0V discharge profile. IC Role / Device Role / Timing Role: Resets nRF52840 SoC when supply falls below 3.20V; MR enables user-initiated firmware update reset. Use Value: 3μA supply current extends battery life beyond 5 years; active-high output interfaces directly with SoC's native reset polarity. |
Use Scenario: Manages power sequencing between 1.8V core and 3.3V I/O rails in edge AI gateway using dual-supply SoC. IC Role / Device Role / Timing Role: Primary VCC monitor for 3.3V rail; MR synchronizes reset across subsystems during firmware recovery. Use Value: Push-pull drive strength (800µA VOH) ensures clean reset edge into multiple loads; SC70-4 footprint saves board area in compact designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS32D3-T | Same 3.20V threshold and MR input, but 140ms reset timeout (vs. 280ms) | Suitable for faster-booting MCUs where shorter reset hold time is acceptable | Select when system boot sequence completes in <150ms and tighter timing margin is needed |
| TPS3808G33DBVR | 3.3V threshold (±0.5%), 200ms timeout, 2.5μA ICC at 3.3V, SOT-23-5 package | Lacks manual reset input; higher threshold accuracy but no MR functionality | Choose when absolute threshold precision is critical and manual reset is not required |
Compared with MAX6385XS32D5-T, MAX6385XS32D3-T reduces reset duration by half for rapid-recovery systems, while TPS3808G33DBVR trades MR capability for tighter 3.3V threshold tolerance and lower quiescent current - both require PCB layout changes due to different pin count and package.
Availability
MAX6385XS32D5-T is available at Aetrix Electronics and suitable for industrial PLCs, automotive body electronics, portable medical sensors, and dual-voltage IoT gateways requiring stable component supply with automotive-grade temperature performance and long-term lifecycle support.
Supply support for MAX6385XS32D5-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 demanding industrial, automotive, and communications applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single/dual low-voltage μP supervisory circuits targeting space-constrained, battery-sensitive, and thermally harsh environments - specifically engineered for deterministic reset behavior without external components.
FAQ
What is the exact reset threshold voltage of MAX6385XS32D5-T?
The MAX6385XS32D5-T has a factory-set reset threshold of 3.20V, specified with ±2.5% accuracy over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during production and does not require external calibration. The "32" suffix in the part number explicitly denotes the 3.20V threshold per Maxim's ordering guide.
Does MAX6385XS32D5-T support manual reset functionality?
Yes, MAX6385XS32D5-T includes a debounced manual reset input (MR) pin with an internal 63kΩ pullup resistor. Driving MR low forces an immediate active-high reset assertion, which remains active for the full 280ms timeout period after MR is released. No external pullup or debounce circuitry is required.
What package type and dimensions does MAX6385XS32D5-T use?
MAX6385XS32D5-T is supplied in a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. It is RoHS-compliant ("+T" suffix), rated for -40°C to +125°C operation, and features a land pattern compatible with standard reflow soldering processes per JEDEC JESD51-7.
How does the reset output behave during brownout conditions?
During brownout, MAX6385XS32D5-T asserts its active-high RESET output when VCC falls below 3.20V and maintains it for a minimum of 280ms after VCC rises back above threshold. The output remains valid down to VCC = 1.0V, ensuring deterministic logic levels even during severe undervoltage - critical for preventing partial execution in microcontrollers.
Is MAX6385XS32D5-T qualified for automotive applications?
MAX6385XS32D5-T is AEC-Q100 qualified for automotive use, as confirmed in the datasheet Features section and Ordering Information table. While the "/V" suffix denotes specific automotive-trimmed versions, the base MAX6385XS32D5-T meets AEC-Q100 Grade 1 requirements (-40°C to +125°C) and is widely deployed in body control modules and infotainment power supervisors.
MAX6385XS32D5-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:
- 3.2V
- 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
MAX6385XS32D5-T FAQ
1.How can I place an order for MAX6385XS32D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS32D5-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 MAX6385XS32D5-T reliable?
The price and inventory of MAX6385XS32D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS32D5-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS32D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS32D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS32D5-T?
MAX6385XS32D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS32D5-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 MAX6385XS32D5-T?
For technical support, including MAX6385XS32D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS32D5-T requirements.
6.How does Aetrix verify that MAX6385XS32D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS32D5-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 MAX6385XS32D5-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS32D5-T?
All MAX6385XS32D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS32D5-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 MAX6385XS32D5-T part is unused and in its original packaging.
Return procedure for MAX6385XS32D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6385XS32D5-T Tags
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MIC826SYMT-TR
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APX803S-31SA-7
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APX803L20-29SA-7
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