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Analog Devices Inc./Maxim Integrated MAX6385XS26D2-T
- Part No.:
- MAX6385XS26D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS26D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
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Product details
Overview
MAX6385XS26D2-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 2.63V reset threshold, 20ms minimum reset timeout, and manual reset input (MR), designed for low-power voltage monitoring in battery-powered embedded systems where supply current must remain below 6µA at 3.6V.
For engineers reviewing the MAX6385XS26D2-T datasheet, MAX6385XS26D2-T pinout, MAX6385XS26D2-T application, or MAX6385XS26D2-T equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy over –40°C to +125°C, MR internal pullup of 63kΩ, and compatibility with SC70-4 packaging for space-constrained PCB layouts.
Technical Context
The MAX6385XS26D2-T integrates a precision voltage comparator with a temperature-stable 2.63V reference and a monostable timer that guarantees minimum 20ms reset assertion after VCC recovery or MR release. Its active-high push-pull output drives directly into μP reset inputs without external pullups.
It features a debounced manual reset input (MR) with internal 63kΩ pullup to VCC, supporting TTL/CMOS logic levels and momentary switch interfaces; reset remains asserted during MR low condition and for the full 20ms timeout after MR returns high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (factory-set, ±2.5% over –40°C to +125°C) |
| Reset Timeout | 20ms min (guaranteed assertion duration after VCC rise or MR release) |
| Supply Current | 6µA at VCC = 3.6V (enables >10-year battery life in always-on monitoring) |
| Output Type | Active-high push-pull (no external pullup required; drives high during reset) |
| MR Input | Active-low with 63kΩ internal pullup (supports direct switch-to-GND interface) |
| Operating Voltage | 1.0V to 5.5V (ensures valid reset state even during deep brownout) |
| Reset Validity | Guaranteed correct logic state down to VCC = 1V (prevents spurious release) |
Pinout & Package
MAX6385XS26D2-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 portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary power supply input; monitored for reset threshold violation |
| 2 | RESET | Active-high push-pull output; asserts high during reset, deasserts low when stable |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC; initiates reset on logic low |
| 4 | GND | Analog/digital ground reference; must be low-impedance connection for accurate threshold sensing |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±2.5% tolerance across –40°C to +125°C enables single-supply system monitoring without calibration |
| Low quiescent current | 6µA at 3.6V allows integration into energy-harvesting and coin-cell–powered devices |
| Guaranteed reset validity | Correct logic state maintained down to VCC = 1V prevents premature μP release during slow power ramp-down |
| Debounced manual reset | MR input includes internal 63kΩ pullup and 100ns glitch rejection, eliminating need for external RC filtering |
| Negative transient immunity | Immune to VCC glitches ≤35µs at 100mV overdrive, reducing false resets in noisy power environments |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: Continuous environmental monitoring using coin-cell power with periodic wake-up and data transmission. IC Role / Device Role / Timing Role: Supervises 3.3V supply rail and provides clean, timed reset pulse to ARM Cortex-M0+ MCU upon power-up or brownout. Use Value: 6µA supply current extends battery life beyond 10 years; 20ms timeout ensures full MCU initialization before code execution. | Use Scenario: Modular I/O expansion card requiring reliable reset coordination between FPGA configuration and analog front-end ASIC. IC Role / Device Role / Timing Role: Generates synchronized active-high reset signal triggered by either 5V supply drop or operator-initiated MR button press. Use Value: Push-pull output eliminates external pullup, saving board area; ±2.5% threshold accuracy ensures consistent trip point across industrial temperature range. |
| Medical Wearable ECG Patch | Automotive Body Control Module (BCM) |
Use Scenario: Ultra-low-power wearable continuously monitoring heart rate with rechargeable Li-ion battery and sleep-mode operation. IC Role / Device Role / Timing Role: Monitors 1.8V core supply and asserts active-high reset to ultra-low-power RISC-V processor during undervoltage events. Use Value: Valid reset state guaranteed down to VCC = 1V prevents erratic behavior during battery discharge; SC70-4 footprint fits tight wearable form factor. | Use Scenario: Non-safety-critical BCM subsystem powered from vehicle's 12V-to-3.3V DC/DC converter with manual service reset capability. IC Role / Device Role / Timing Role: Provides fail-safe reset supervision for microcontroller and monitors VCC stability while supporting technician-triggered MR reset via diagnostic port. Use Value: MR input with 63kΩ pullup simplifies wiring to external switch; AEC-Q100 qualified versions available (though MAX6385XS26D2-T itself is commercial-grade). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR26D2+T | Same 2.63V threshold and 20ms timeout, but active-low push-pull output and no MR input | Suitable only where μP requires active-low reset and manual reset is unnecessary | Select if system design uses active-low reset signaling and omits physical reset buttons |
| TPS3123E18DBVR | 2.63V threshold, 200ms timeout (not 20ms), active-high push-pull, no MR input, higher 12µA ICC at 3.3V | Requires longer reset hold time; lacks manual reset functionality | Choose only if extended timeout is acceptable and MR is not needed; verify timing compatibility with target μP |
Compared with MAX6326XR26D2+T and TPS3123E18DBVR, the MAX6385XS26D2-T uniquely combines active-high push-pull output, 20ms precise timeout, and integrated MR-making it optimal for compact, manually serviceable embedded systems needing minimal external components.
Availability
MAX6385XS26D2-T is available at Aetrix Electronics and suitable for battery-powered IoT sensor nodes, industrial PLC I/O modules, medical wearable ECG patches, and automotive body control modules requiring stable component supply with lead-free compliance and commercial-grade reliability.
Supply support for MAX6385XS26D2-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 power, sensing, and connectivity applications, with emphasis on low-power, high-reliability solutions for industrial and consumer markets.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits targeting space- and power-constrained embedded systems requiring guaranteed reset behavior across wide temperature ranges.
FAQ
What is the exact reset threshold voltage of the MAX6385XS26D2-T?
The MAX6385XS26D2-T has a factory-set reset threshold of 2.63V, specified with ±2.5% accuracy over the full operating temperature range of –40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet (suffix "26" corresponds to 2.63V nominal), and applies directly to the VCC supply monitoring function of the MAX6385XS26D2-T.
Does the MAX6385XS26D2-T require an external pullup resistor on its RESET pin?
No, the MAX6385XS26D2-T does not require an external pullup resistor because it features an active-high push-pull RESET output. The internal driver actively pulls the pin high during reset assertion and low during deassertion. This eliminates external components and reduces PCB footprint - a key advantage of the MAX6385XS26D2-T in space-constrained designs.
What is the function and electrical behavior of the MR pin on the MAX6385XS26D2-T?
The MR pin on the MAX6385XS26D2-T is an active-low manual reset input with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which persists for the full 20ms timeout after MR is released. The MAX6385XS26D2-T guarantees glitch rejection of 100ns and supports direct connection to a momentary switch to GND without external debounce circuitry.
Can the MAX6385XS26D2-T operate reliably at VCC = 1.2V?
Yes, the MAX6385XS26D2-T is fully specified to operate down to VCC = 1.0V, and its RESET output state is guaranteed valid across this entire range. At 1.2V, the device maintains correct logic levels on both RESET and MR pins, and continues to monitor VCC against the 2.63V threshold - ensuring robust brownout detection even during deep discharge conditions in the MAX6385XS26D2-T application.
Is the MAX6385XS26D2-T pin-compatible with older Maxim reset ICs like the MAX809?
Yes, the MAX6385XS26D2-T is pin-compatible with the MAX809 series in the same 4-pin SC70 package, sharing identical pinout (VCC, RESET, MR, GND). However, note that MAX809 variants typically offer only active-low outputs and lack MR functionality - so while physical layout is compatible, functional equivalence requires verification of reset polarity and feature requirements in the target MAX6385XS26D2-T design.
MAX6385XS26D2-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:
- 2.63V
- 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
MAX6385XS26D2-T FAQ
1.How can I place an order for MAX6385XS26D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS26D2-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 MAX6385XS26D2-T reliable?
The price and inventory of MAX6385XS26D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS26D2-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS26D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS26D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS26D2-T?
MAX6385XS26D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS26D2-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 MAX6385XS26D2-T?
For technical support, including MAX6385XS26D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS26D2-T requirements.
6.How does Aetrix verify that MAX6385XS26D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS26D2-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 MAX6385XS26D2-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS26D2-T?
All MAX6385XS26D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS26D2-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 MAX6385XS26D2-T part is unused and in its original packaging.
Return procedure for MAX6385XS26D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6385XS26D2-T Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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