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Analog Devices Inc./Maxim Integrated MAX6386XS29D5-T
- Part No.:
- MAX6386XS29D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS29D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,464
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Product details
Overview
MAX6386XS29D5-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), 280ms minimum VCC reset timeout, and debounced manual reset input (MR) with internal 63kΩ pullup. It monitors single-supply systems in battery-powered controllers and portable instrumentation where reliable power-on reset and brownout protection are critical.
For engineers reviewing the MAX6386XS29D5-T datasheet, MAX6386XS29D5-T pinout, MAX6386XS29D5-T application, or MAX6386XS29D5-T equivalent, key selection criteria include its 2.93V threshold accuracy, 280ms reset timeout, MR debounce capability, open-drain output requiring external pullup, and guaranteed valid reset state down to VCC = 1V - all in a space-constrained 4-pin SC70 package.
Technical Context
The MAX6386XS29D5-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 minimum 280ms reset assertion after VCC rises above threshold or after MR release.
It features an active-low manual reset input (MR) with internal 63kΩ pullup, supporting TTL/CMOS logic levels and momentary switch interfaces without external debounce. The open-drain RESET output requires an external pullup resistor and sinks up to 3.2mA at VCC ≥ 4.5V while maintaining VOL ≤ 0.4V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V (nominal), ±2.5% over −40°C to +125°C - ensures accurate brownout detection across automotive and industrial temperature ranges |
| VCC Reset Timeout | 280ms (minimum) - guarantees sufficient processor initialization time after power stabilization |
| Supply Current | 3μA at +1.8V, 6μA at +3.6V - enables multi-year operation in coin-cell–powered IoT sensors |
| Output Type | Open-drain active-low RESET - allows wired-OR configuration and level translation with external pullup |
| Manual Reset Input | MR with 63kΩ internal pullup - supports direct connection of momentary switch to GND; no external components required |
| Operating Voltage Range | 1.0V to 5.5V - ensures valid reset assertion even during deep brownout conditions down to 1V |
| Reset Output Validity | Guaranteed correct logic state for VCC ≥ 1V - prevents spurious resets during power ramp-down |
Pinout & Package
MAX6386XS29D5-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 in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and sets reset detection reference |
| 2 | RESET | Open-drain active-low reset output; must be pulled up externally to assert reset on connected μP or logic |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC; drives reset when pulled to GND |
| 4 | GND | Analog and digital ground reference; must be connected to system ground plane for stable threshold accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 2.93V threshold | Eliminates external resistor divider; reduces BOM count and layout area in space-constrained designs |
| 280ms minimum reset timeout | Meets typical μP power-up timing requirements without need for external RC timing components |
| Debounced MR input with 63kΩ pullup | Enables direct integration of mechanical pushbutton without external RC filter or Schmitt trigger |
| Open-drain RESET output | Supports multi-drop reset bus architecture and voltage-level translation between disparate logic families |
| Valid operation down to VCC = 1V | Prevents false deassertion during slow power-down sequences common in battery-depleted states |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG monitor powered by CR2032 coin cell with intermittent Bluetooth transmission. IC Role / Device Role / Timing Role: Supervises VCC during battery voltage sag and initiates controlled μP reset before data corruption occurs. Use Value: 3μA quiescent current extends battery life beyond 3 years; 280ms timeout ensures full ADC calibration completes before firmware execution. |
Use Scenario: DIN-rail mounted I/O module operating in factory environments with 24VDC supply and transient noise. IC Role / Device Role / Timing Role: Monitors local 3.3V logic rail derived from switching regulator; asserts reset during line dips or EFT events. Use Value: ±2.5% threshold accuracy over −40°C to +125°C maintains reliability across uncontrolled ambient temperatures; MR enables field-service reset without power cycling. |
| Automotive Body Control Units | Smart Home Hub Power Management |
Use Scenario: Low-voltage subsystem (e.g., door module) powered from vehicle battery with cold-crank voltage drops. IC Role / Device Role / Timing Role: Detects VCC falling below 2.93V during cranking and holds μP in reset until stable 3.3V is restored. Use Value: Negative-going transient immunity prevents false resets during 100µs/2V glitches; AEC-Q100 qualified variant available (suffix /V). |
Use Scenario: Wi-Fi-enabled home automation hub with dual-rail power (5V USB + 3.3V LDO) and OTA update capability. IC Role / Device Role / Timing Role: Ensures clean boot sequence after power interruption or watchdog-triggered recovery. Use Value: Open-drain RESET allows shared reset line across multiple ICs (Wi-Fi SoC, audio codec, sensor hub); MR supports user-initiated factory reset via button. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR29D5+T | Same 2.93V threshold and 280ms timeout, but push-pull active-low output; no MR input | Lacks manual reset capability; requires external pullup only if interfacing with open-drain buses | Select when MR is unnecessary and board space permits simpler output drive without external resistor |
| TPS3808G33DBVR | 2.93V threshold (±0.5% initial), 280ms timeout, push-pull active-low, no MR; higher ICC (12μA at 3.6V) | Superior threshold accuracy but higher supply current; not AEC-Q100 qualified in standard grade | Choose for precision-critical applications where 0.5% tolerance outweighs 4× higher current draw and lack of MR |
Compared with MAX6386XS29D5-T, MAX6326XR29D5+T removes MR functionality and changes output drive to push-pull, simplifying interface but eliminating field-service reset; TPS3808G33DBVR trades MR and ultra-low power for tighter threshold tolerance and higher drive strength, better suited for high-reliability non-automotive systems.
Availability
MAX6386XS29D5-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart home hub power management requiring stable component supply with long-term lifecycle support.
Supply support for MAX6386XS29D5-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 automotive markets.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits targeting battery-powered and thermally demanding systems where guaranteed reset behavior under brownout, cold-crank, and transient conditions is mandatory.
FAQ
What is the exact reset threshold voltage of the MAX6386XS29D5-T?
The MAX6386XS29D5-T has a factory-set nominal reset threshold of 2.93V, with guaranteed accuracy of ±2.5% 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 "29" corresponds to min/nom/max values of 2.85V/2.93V/3.00V). The MAX6386XS29D5-T uses this fixed threshold to detect VCC brownout without external components.
Does the MAX6386XS29D5-T support manual reset, and how is it implemented?
Yes, the MAX6386XS29D5-T includes a debounced manual reset input (MR) on Pin 3, featuring an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 280ms timeout after MR is released. No external debounce circuitry is needed, making the MAX6386XS29D5-T ideal for designs using simple momentary switches directly tied to GND.
What package type and dimensions does the MAX6386XS29D5-T use?
The MAX6386XS29D5-T is supplied in a lead-free, RoHS-compliant 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. This compact footprint enables high-density placement in portable and wearable electronics where board space is constrained, and is distinct from the 3-pin SC70 used by earlier MAX6381 variants.
How does the open-drain RESET output of the MAX6386XS29D5-T function in system design?
The MAX6386XS29D5-T's RESET pin is an open-drain active-low output requiring an external pullup resistor to the target logic rail (e.g., 3.3V). This configuration allows multiple devices to share a common reset bus (wired-OR), supports level translation across different voltage domains, and avoids contention during power sequencing. The MAX6386XS29D5-T sinks up to 3.2mA while maintaining VOL ≤ 0.4V at VCC ≥ 4.5V.
Is the MAX6386XS29D5-T suitable for automotive applications?
The base MAX6386XS29D5-T is rated for −40°C to +125°C operation and meets industrial reliability standards. An automotive-qualified version - MAX6386XS29D5/V+T - is available and AEC-Q100 qualified. While the MAX6386XS29D5-T itself is not certified, its thermal performance, transient immunity, and wide voltage range make it suitable for non-safety-critical automotive subsystems when validated per customer requirements.
MAX6386XS29D5-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:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6386XS29D5-T FAQ
1.How can I place an order for MAX6386XS29D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS29D5-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 MAX6386XS29D5-T reliable?
The price and inventory of MAX6386XS29D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS29D5-T is usually 5 days.
3.What payment methods are accepted for MAX6386XS29D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS29D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS29D5-T?
MAX6386XS29D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS29D5-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 MAX6386XS29D5-T?
For technical support, including MAX6386XS29D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS29D5-T requirements.
6.How does Aetrix verify that MAX6386XS29D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6386XS29D5-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 MAX6386XS29D5-T meets industry standards.
7.What is the process for return or replacement of MAX6386XS29D5-T?
All MAX6386XS29D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS29D5-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 MAX6386XS29D5-T part is unused and in its original packaging.
Return procedure for MAX6386XS29D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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