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Analog Devices Inc./Maxim Integrated MAX6385XS32D2-T
- Part No.:
- MAX6385XS32D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS32D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,864
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Product details
Overview
MAX6385XS32D2-T from Maxim Integrated is a low-power, active-high push-pull μP supervisory circuit with factory-set 3.20V reset threshold, 20ms minimum reset timeout, and manual reset input (MR). It monitors VCC from +1.8V to +5.0V, consumes only 3μA at +1.8V, and guarantees valid reset output down to VCC = 1V. Used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6385XS32D2-T datasheet, MAX6385XS32D2-T pinout, MAX6385XS32D2-T application, or MAX6385XS32D2-T equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing behavior - all confirmed for the exact 4-pin SC70 variant with XS32D2 suffix.
Technical Context
The MAX6385XS32D2-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 20ms minimum reset timeout after VCC rises above 3.20V or after MR release.
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 with 63kΩ internal pullup. No auxiliary voltage monitor or open-drain option is present in this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.20V (factory-set, ±2.5% over –40°C to +125°C) - ensures reliable detection of 3.3V rail brownout before system instability. |
| Reset Timeout | 20ms minimum - holds μP in reset long enough for power rails and clocks to stabilize post-brownout. |
| Supply Current | 3μA at VCC = +1.8V - enables multi-year operation in coin-cell–powered IoT sensors. |
| Operating Voltage | +1.0V to +5.5V - supports valid reset assertion down to 1V, critical for ultra-low-voltage wake-up sequencing. |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor, simplifying PCB layout and reducing BOM count. |
| Manual Reset | MR input with 63kΩ internal pullup - allows momentary switch-to-GND reset without external components or debounce circuitry. |
| Temp Range | –40°C to +125°C - qualified for automotive under-hood and industrial control environments. |
Pinout & Package
MAX6385XS32D2-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. This compact footprint suits space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor - powers internal circuitry and triggers reset when falling below 3.20V. |
| 2 | RESET | Active-high push-pull output - drives high during normal operation; pulls low only during reset assertion (e.g., power-up or MR activation). |
| 3 | GND | Analog/digital ground reference - must be connected directly to system ground plane for stable threshold accuracy. |
| 4 | MR | Active-low manual reset input - forces reset when pulled low; internal 63kΩ pullup holds it high when unused. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.20V threshold | Eliminates external resistor divider, saving board space and eliminating drift from component tolerances. |
| 20ms guaranteed reset timeout | Ensures sufficient hold time for 3.3V LDOs and crystal oscillators to settle before μP execution resumes. |
| MR input with integrated pullup | Reduces bill-of-materials by one resistor and removes risk of floating input causing spurious resets. |
| Valid operation down to VCC = 1V | Prevents metastability during deep brownout recovery, enabling deterministic restart even as supply collapses. |
| –40°C to +125°C operation | Supports deployment in automotive engine control units and industrial motor drives without derating. |
Applications
| Portable Medical Sensors | Battery-Powered Telematics |
|---|---|
Use Scenario: Wearable ECG monitor powered by CR2032 coin cell, requiring fail-safe boot sequence after battery insertion or voltage sag. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to ARM Cortex-M0+ during VCC ramp and brownout events. Use Value: 3μA quiescent current extends battery life beyond 3 years; 20ms timeout ensures ADC reference and RF transceiver stabilize before data acquisition begins. |
Use Scenario: OBD-II tracker using Li-ion battery and GPS module, needing robust reset during vehicle ignition transients. IC Role / Device Role / Timing Role: Monitors 3.3V system rail and provides manual reset via CAN-triggered GPIO pulse. Use Value: MR input accepts direct logic-level pulses from microcontroller, enabling firmware-initiated safe reboot without hardware switch. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
Use Scenario: DIN-rail mounted sensor interface with isolated 5V/3.3V supplies, subject to 12V bus noise coupling. IC Role / Device Role / Timing Role: Primary VCC supervisor for 3.3V FPGA configuration logic, with immunity to <350ns negative VCC glitches. Use Value: ±2.5% threshold accuracy prevents false resets across temperature, while push-pull output drives FPGA PROG_B pin directly. |
Use Scenario: Door module with LIN transceiver and EEPROM, operating in cabin ambient up to +85°C. IC Role / Device Role / Timing Role: Resets microcontroller on 3.3V rail undervoltage during battery jump-start or alternator load dump. Use Value: AEC-Q100 qualified variant ensures reliability; 3.20V threshold aligns precisely with automotive 3.3V LDO dropout specification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS32D3-T | Same 3.20V threshold but 140ms reset timeout (vs. 20ms) | Suitable for systems with slower power supplies or longer oscillator start-up times | Select when extended reset hold time is required for legacy 8-bit MCUs or discrete clock generators. |
| TLV803EB32DBZR | 3.2V threshold, 240ms timeout, SOT-23-3 package, no MR input | Lacks manual reset capability; smaller footprint but less flexible for field service | Choose for cost-sensitive, space-constrained designs where manual reset is unnecessary and longer timeout is acceptable. |
Compared with MAX6385XS32D2-T, the MAX6385XS32D3-T extends reset assertion for slower power domains, while TLV803EB32DBZR trades MR functionality and SC70 compatibility for lower unit cost and smaller SOT-23 footprint - neither is pin-compatible, requiring PCB revision.
Availability
MAX6385XS32D2-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered telematics, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS32D2-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 computing applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single-supply μP supervisory circuits optimized for battery longevity and robustness in noisy, thermally variable environments - specifically targeting portable, automotive, and industrial edge devices.
FAQ
What is the exact reset threshold voltage of MAX6385XS32D2-T?
The MAX6385XS32D2-T has a factory-set reset threshold of 3.20V, with guaranteed accuracy of ±2.5% over the full operating temperature range (–40°C to +125°C). This value is fixed and non-adjustable, matching the "32" suffix in the part number per Maxim's Reset Threshold table.
Does MAX6385XS32D2-T support manual reset functionality?
Yes, MAX6385XS32D2-T includes a dedicated MR (manual reset) input on pin 4. Driving MR low forces an immediate reset; the device holds RESET low for the full 20ms timeout after MR is released. An internal 63kΩ pullup resistor keeps MR high when unconnected.
What package type and dimensions does MAX6385XS32D2-T use?
MAX6385XS32D2-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) and compatible with standard reflow soldering profiles up to +260°C.
Can MAX6385XS32D2-T operate reliably at VCC = 1.8V?
Yes, MAX6385XS32D2-T is fully specified to operate at VCC = 1.8V, drawing only 3μA typical supply current. Its reset output remains valid and logic-correct down to VCC = 1.0V, making it suitable for ultra-low-voltage battery-backed systems.
Is MAX6385XS32D2-T qualified for automotive applications?
MAX6385XS32D2-T is not explicitly marked with the /V automotive qualification suffix. For AEC-Q100 compliance, the /V variant (e.g., MAX6385XS32D2/V+T) must be selected - this version undergoes additional stress testing and is screened for automotive temperature and reliability requirements.
MAX6385XS32D2-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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS32D2-T FAQ
1.How can I place an order for MAX6385XS32D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS32D2-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 MAX6385XS32D2-T reliable?
The price and inventory of MAX6385XS32D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS32D2-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS32D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS32D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS32D2-T?
MAX6385XS32D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS32D2-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 MAX6385XS32D2-T?
For technical support, including MAX6385XS32D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS32D2-T requirements.
6.How does Aetrix verify that MAX6385XS32D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS32D2-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 MAX6385XS32D2-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS32D2-T?
All MAX6385XS32D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS32D2-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 MAX6385XS32D2-T part is unused and in its original packaging.
Return procedure for MAX6385XS32D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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