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Analog Devices Inc./Maxim Integrated MAX6386XS29D2-T
- Part No.:
- MAX6386XS29D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS29D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,385
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Product details
Overview
MAX6386XS29D2-T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.93V reset threshold (±2.5% over −40°C to +125°C), 20ms minimum reset timeout, and debounced manual reset input (MR) featuring internal 63kΩ pullup. It operates from 1.0V to 5.5V supply and consumes only 3μA at 1.8V, enabling reliable power monitoring in battery-powered embedded controllers.
For engineers reviewing the MAX6386XS29D2-T datasheet, MAX6386XS29D2-T pinout, MAX6386XS29D2-T application, or MAX6386XS29D2-T equivalent, key selection criteria include its 2.93V VTH, 20ms tRP, MR input compatibility with TTL/CMOS logic, guaranteed reset validity down to VCC = 1V, and 4-pin SC70 package footprint for space-constrained designs.
Technical Context
The MAX6386XS29D2-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 2.93V threshold, with ±2.5% accuracy across −40°C to +125°C and 60ppm/°C tempco. Its internal monostable timer generates a precise 20ms minimum reset assertion period after VCC recovery.
This device integrates a debounced manual reset input (MR) with 1µs minimum pulse width support and 100ns glitch rejection, coupled with an open-drain RESET output requiring external pullup and capable of sinking 1.2mA at 2.5V while maintaining VOL ≤ 0.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V (nominal), ±2.5% tolerance over −40°C to +125°C - ensures consistent brownout detection across automotive and industrial temperature ranges |
| Reset Timeout | 20ms (minimum) - guarantees sufficient processor initialization time after power stabilization |
| 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 direct interface with 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic domains |
| MR Input Pullup | 63kΩ internal resistor - eliminates need for external biasing when MR is unused or driven by open-drain logic |
| RESET Output Type | Open-drain active-low - allows wired-OR configuration with multiple reset sources and flexible voltage-level translation |
| VCC Transient Immunity | Immune to negative-going VCC glitches < 35µs at 100mV overdrive - prevents spurious resets in noisy power environments |
Pinout & Package
MAX6386XS29D2-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 power supply input and monitored voltage source - must be decoupled with 0.1µF capacitor near pin for transient immunity |
| 2 | RESET | Open-drain active-low reset output - requires external pullup resistor (typically 10kΩ) to host logic rail; sinks up to 1.2mA at 2.5V |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC via 63kΩ; drives reset low when asserted, with 1µs minimum pulse width support |
| 4 | GND | Analog/digital ground reference - must be connected to system ground plane with low-inductance path to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±2.5% accuracy over full temperature range - eliminates need for external calibration in production |
| Guaranteed reset validity | Operates correctly down to VCC = 1.0V - ensures deterministic reset behavior during deep brownout conditions |
| Integrated MR debouncing | No external RC network required - internal 100ns glitch rejection and 1µs pulse width filter suppress switch bounce and EMI |
| Low quiescent current | 3μA at 1.8V - extends battery life in portable medical monitors and wireless sensor nodes |
| Open-drain RESET architecture | Enables multi-source reset bus sharing - supports system-level reset coordination across multiple ICs without contention |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
|
Use Scenario: Monitors 3.3V I/O supply and 1.2V core rail in programmable logic controller CPU module during cold start and line transients. IC Role / Device Role / Timing Role: Provides power-on reset assertion for ARM Cortex-M7 MCU and holds peripheral interfaces in reset until stable clock and supply conditions are confirmed. Use Value: Prevents firmware corruption during unstable 3.3V rail ramp-up using 20ms timeout aligned with FPGA configuration time. |
Use Scenario: Supervises lithium-thionyl chloride cell voltage in remote environmental sensor node operating at −40°C to +85°C. IC Role / Device Role / Timing Role: Detects end-of-life battery sag below 2.93V and triggers graceful shutdown sequence via MR-linked microcontroller interrupt. Use Value: Enables accurate low-voltage warning with ±2.5% threshold stability across extreme temperatures, extending field deployment life. |
| Automotive Body Control Module | Medical Point-of-Care Monitor |
|
Use Scenario: Validates 5V CAN transceiver supply and 1.8V microcontroller core voltage in AEC-Q100 qualified body control unit. IC Role / Device Role / Timing Role: Generates synchronized reset pulse for dual-rail SoC and asserts fault flag on VCC dropout exceeding 20ms duration. Use Value: Meets ISO 16750-2 pulse 4a/b requirements via 35µs transient immunity and −40°C to +125°C operation. |
Use Scenario: Ensures deterministic boot sequence in FDA-cleared handheld ECG analyzer powered by rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Monitors 3.0V analog front-end supply and provides MR-initiated recalibration reset via tactile button press. Use Value: Guarantees valid reset state down to 1.0V VCC, preventing partial initialization during battery depletion events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR29D2+T | Same 2.93V threshold and 20ms timeout, but push-pull active-low output - no external pullup required | Lacks MR input; not suitable for systems requiring manual reset capability | Select when board layout prohibits external pullup or MR functionality is unnecessary |
| TPS3808G18DBVR | 1.8V threshold (not 2.93V); 20ms timeout; push-pull active-low; 1.8V–6.0V operation | Designed for lower-voltage domains; no MR input; higher 8μA ICC at 1.8V | Choose only if system uses 1.8V supply monitoring and MR is not needed |
Compared with MAX6386XS29D2-T, MAX6326XR29D2+T simplifies BOM by eliminating the pullup resistor but removes manual reset flexibility, while TPS3808G18DBVR targets different voltage rails and lacks MR - making MAX6386XS29D2-T uniquely suited for 2.9V–3.3V systems requiring both precision threshold and user-initiated reset.
Availability
MAX6386XS29D2-T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, automotive body control modules, and medical point-of-care monitors requiring stable component supply with AEC-Q100-aligned reliability and long-term production continuity.
Supply support for MAX6386XS29D2-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 medical applications, emphasizing low power, high accuracy, and robust operation.
The MAX6381–MAX6390 family delivers single-supply microprocessor supervisory circuits optimized for ultra-low-power, wide-temperature, and space-constrained embedded systems requiring guaranteed reset behavior under brownout and transient conditions.
FAQ
What is the exact reset threshold voltage of the MAX6386XS29D2-T?
The MAX6386XS29D2-T has a factory-set nominal reset threshold of 2.93V, with guaranteed tolerance of ±2.5% 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 MAX6386XS29D2-T datasheet specifies min/max limits of 2.85V and 3.00V at +25°C, tightening to 2.85V–3.00V across temperature.
Does the MAX6386XS29D2-T support manual reset functionality?
Yes, the MAX6386XS29D2-T includes a dedicated MR (manual reset) input with internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 20ms timeout period after MR is released. The MAX6386XS29D2-T supports TTL/CMOS-compatible logic levels and rejects glitches shorter than 100ns, eliminating need for external debounce circuitry.
What package type and dimensions does the MAX6386XS29D2-T use?
The MAX6386XS29D2-T is supplied in a lead-free, RoHS-compliant 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern (90-0187) is optimized for reflow soldering on multilayer PCBs, with thermal resistance θJA = 322.6°C/W. This compact footprint enables high-density placement in portable and automotive electronics where board space is constrained.
Can the MAX6386XS29D2-T operate reliably at low supply voltages?
Yes, the MAX6386XS29D2-T guarantees correct reset output logic state down to VCC = 1.0V, with full functionality specified from 1.0V to 5.5V. At 1.8V, it draws only 3μA supply current, and its open-drain RESET output maintains VOL ≤ 0.3V while sinking 80µA - ensuring interoperability with 1.2V and 1.8V logic families even during brownout conditions.
How does the MAX6386XS29D2-T handle power supply transients?
The MAX6386XS29D2-T provides built-in immunity to short-duration negative-going VCC transients, rejecting glitches up to 35µs wide when the overdrive (VTH − VCC) is 100mV. This is achieved through internal comparator hysteresis and filtering. For enhanced protection, the MAX6386XS29D2-T datasheet recommends placing a 0.1µF ceramic capacitor between VCC and GND as close as possible to the device pins.
MAX6386XS29D2-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:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6386XS29D2-T FAQ
1.How can I place an order for MAX6386XS29D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS29D2-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 MAX6386XS29D2-T reliable?
The price and inventory of MAX6386XS29D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS29D2-T is usually 5 days.
3.What payment methods are accepted for MAX6386XS29D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS29D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS29D2-T?
MAX6386XS29D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS29D2-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 MAX6386XS29D2-T?
For technical support, including MAX6386XS29D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS29D2-T requirements.
6.How does Aetrix verify that MAX6386XS29D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6386XS29D2-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 MAX6386XS29D2-T meets industry standards.
7.What is the process for return or replacement of MAX6386XS29D2-T?
All MAX6386XS29D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS29D2-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 MAX6386XS29D2-T part is unused and in its original packaging.
Return procedure for MAX6386XS29D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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