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Analog Devices Inc./Maxim Integrated MAX6386XS29D3-T
- Part No.:
- MAX6386XS29D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS29D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,808
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Product details
Overview
MAX6386XS29D3-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), 140ms minimum VCC reset timeout, and debounced manual reset input (MR) with internal 63kΩ pullup. It monitors single supply voltage in battery-powered embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6386XS29D3-T datasheet, MAX6386XS29D3-T pinout, MAX6386XS29D3-T application, or MAX6386XS29D3-T equivalent, key selection factors include its 2.93V threshold accuracy, 140ms reset hold time, MR debounce capability, guaranteed valid reset down to VCC = 1V, and compatibility with 4-pin SC70 layout constraints.
Technical Context
The MAX6386XS29D3-T implements a precision bandgap-based reset comparator with ±2.5% threshold tolerance across temperature, paired with a digital timeout counter that guarantees minimum 140ms assertion after VCC recovery. Its open-drain RESET output requires an external pullup and remains valid down to VCC = 1V.
It integrates a debounced manual reset input (MR) with internal 63kΩ pullup resistor, supporting TTL/CMOS logic drive and eliminating need for external RC filtering. The device operates from 1.0V to 5.5V supply and consumes only 3μA at 1.8V, enabling use in ultra-low-power portable applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal, ±2.5% over -40°C to +125°C - ensures consistent brownout detection across automotive/industrial temperature range |
| VCC Reset Timeout | 140ms minimum - guarantees sufficient μP initialization time after power stabilization |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered devices |
| Operating Voltage Range | 1.0V to 5.5V - supports wide input rail including Li-ion, 3.3V, and 5V systems |
| RESET Output Type | Open-drain active-low - allows wired-OR configuration and level translation with external pullup |
| Manual Reset Input | MR with internal 63kΩ pullup - simplifies board design by eliminating external resistor for pushbutton interface |
| Reset Valid Down To | VCC = 1V - maintains correct logic state during deep brownout, preventing spurious release |
Pinout & Package
MAX6386XS29D3-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 space-constrained portable designs.
| 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 |
| 2 | RESET | Open-drain active-low reset output - requires external pullup resistor (typically 10kΩ–100kΩ) to host supply rail |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; drive low via momentary switch to GND for system reset |
| 4 | GND | Analog/digital ground reference - must connect to low-impedance system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±2.5% accuracy over full industrial temperature range - eliminates need for external calibration |
| Debounced manual reset input | MR pin includes internal 63kΩ pullup and inherent noise immunity - removes requirement for external RC filter or Schmitt trigger |
| Guaranteed reset validity | RESET output remains logically valid down to VCC = 1V - prevents premature deassertion during slow power ramp-down |
| Negative-going transient immunity | Immune to VCC glitches ≤100µs duration when overdrive < 200mV - improves robustness in electrically noisy environments |
| Ultra-low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications such as IoT sensors and wearables |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous ECG or glucose monitoring using coin-cell power with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during cold start and brownout events to ensure clean μC boot sequence. Use Value: 3μA supply current extends operational life beyond 5 years; 140ms timeout accommodates slow LDO startup in ultra-low-power rails. | Use Scenario: Remote environmental sensor node logging temperature/humidity every 10 minutes using alkaline AA batteries. IC Role / Device Role / Timing Role: Power supervisor validating VCC before μC wake-up and holding reset until stable supply is confirmed. Use Value: 2.93V threshold matches typical 3.0V nominal battery discharge curve; MR pin enables field firmware recovery via physical button press. |
| Industrial Handheld Terminals | Automotive Body Control Modules |
Use Scenario: Ruggedized barcode scanner operating across -20°C to +70°C ambient with Li-Po battery backup. IC Role / Device Role / Timing Role: Single-supply monitor ensuring deterministic reset on power-up, power-loss, and manual service reset. Use Value: ±2.5% threshold accuracy over temperature prevents false resets during thermal cycling; open-drain output interfaces cleanly with 3.3V I/O domain. | Use Scenario: Low-voltage subsystem (e.g., door module) powered from 12V-to-3.3V DC-DC converter with load-dump transients. IC Role / Device Role / Timing Role: Primary reset generator asserting active-low signal to MCU upon undervoltage or manual diagnostic reset. Use Value: Negative-going transient immunity suppresses false triggers during alternator load dump; AEC-Q100 qualified variant available (suffix /V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR29D3+T | Same 2.93V threshold and 140ms timeout, but push-pull active-low output and no MR input | Lacks manual reset capability; requires external pullup not needed for push-pull | Select when board layout prohibits open-drain wiring or MR functionality is unnecessary |
| TPS3123E18DBVR | 2.93V threshold, 200ms timeout, push-pull active-low, no MR, 1.8V–5.5V operation | Higher timeout and no manual reset; tighter 1.5% threshold accuracy but narrower temp range (-40°C to +85°C) | Choose for cost-sensitive consumer applications where extended temperature range is not required |
Compared with MAX6386XS29D3-T, MAX6326XR29D3+T offers simpler output drive but sacrifices field-serviceability, while TPS3123E18DBVR trades MR functionality and industrial temperature support for higher threshold precision and lower unit cost in commercial-grade designs.
Availability
MAX6386XS29D3-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial handheld terminals, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for MAX6386XS29D3-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 in industrial, automotive, and computing markets.
The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed supervisory circuits optimized for reliable reset generation in space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6386XS29D3-T?
The MAX6386XS29D3-T has a factory-set nominal reset threshold of 2.93V, with guaranteed tolerance of ±2.5% over the full operating temperature range of -40°C to +125°C. This value is laser-trimmed during production and does not require external adjustment. The "29" suffix in MAX6386XS29D3-T directly corresponds to the 2.93V threshold per Maxim's ordering guide.
Does the MAX6386XS29D3-T support manual reset functionality?
Yes, the MAX6386XS29D3-T includes a dedicated MR (manual reset) input pin with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 140ms timeout period after MR is released. This feature enables hardware-initiated system recovery without software intervention.
What package type and dimensions does the MAX6386XS29D3-T use?
The MAX6386XS29D3-T is supplied in a 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. It is RoHS-compliant ("+T" suffix) and features gull-wing leads compatible with standard reflow soldering processes. Land pattern 90-0187 is recommended for PCB layout.
Can the MAX6386XS29D3-T operate reliably at very low supply voltages?
Yes, the MAX6386XS29D3-T guarantees correct reset output logic state down to VCC = 1.0V, ensuring deterministic behavior during deep brownout conditions. Its 3μA supply current at 1.8V and operation down to 1.0V make it suitable for applications with weak or fading battery sources where other supervisors may fail to assert reset correctly.
Is the MAX6386XS29D3-T pin-compatible with older Maxim reset ICs like the MAX809?
Yes, the MAX6386XS29D3-T is explicitly listed as pin-compatible with MAX809/MAX810/MAX803 and other legacy Maxim supervisors in the datasheet Features section. Its 4-pin SC70 footprint matches these predecessors, enabling drop-in replacement in existing designs without PCB modification - provided the open-drain output and MR functionality align with system requirements.
MAX6386XS29D3-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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6386XS29D3-T FAQ
1.How can I place an order for MAX6386XS29D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS29D3-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 MAX6386XS29D3-T reliable?
The price and inventory of MAX6386XS29D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS29D3-T is usually 5 days.
3.What payment methods are accepted for MAX6386XS29D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS29D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS29D3-T?
MAX6386XS29D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS29D3-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 MAX6386XS29D3-T?
For technical support, including MAX6386XS29D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS29D3-T requirements.
6.How does Aetrix verify that MAX6386XS29D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6386XS29D3-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 MAX6386XS29D3-T meets industry standards.
7.What is the process for return or replacement of MAX6386XS29D3-T?
All MAX6386XS29D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS29D3-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 MAX6386XS29D3-T part is unused and in its original packaging.
Return procedure for MAX6386XS29D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6386XS29D3-T Tags
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