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Analog Devices Inc./Maxim Integrated MAX6386XS23D3+
- Part No.:
- MAX6386XS23D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS23D3+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,498
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Product details
Overview
MAX6386XS23D3+ from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.31V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum VCC reset timeout, and debounced manual reset input. It monitors single supply voltage in battery-powered embedded systems where reliable power-up sequencing and brownout protection are critical.
For engineers reviewing the MAX6386XS23D3+ datasheet, MAX6386XS23D3+ pinout, MAX6386XS23D3+ application, or MAX6386XS23D3+ equivalent, key selection factors include its 3μA supply current at 1.8V, guaranteed reset validity down to VCC = 1V, open-drain output requiring external pullup, and 4-pin SC70 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6386XS23D3+ implements a precision bandgap-based reset comparator with ±2.5% threshold accuracy across -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 140ms minimum reset assertion period after VCC rises above 2.31V.
It features a debounced manual reset input (MR) with 63kΩ internal pullup, supporting TTL/CMOS logic levels and momentary switch interfaces without external RC networks. 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 | 2.31V nominal (suffix '23'), ±2.5% tolerance over full temperature range - ensures consistent brownout detection across industrial environments |
| Reset Timeout | 140ms minimum (suffix 'D3') - guarantees sufficient μP initialization time before release |
| 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 even during deep brownout conditions |
| Output Type | Open-drain active-low - allows wired-OR reset bus configuration with multiple supervisors |
| Manual Reset | Debounced MR input with 63kΩ internal pullup - eliminates need for external debounce circuitry |
| Temp Range | -40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
MAX6386XS23D3+ is housed in a RoHS-compliant 4-pin SC70 package (package code X4+1), measuring 1.2mm × 1.6mm × 0.75mm, suitable for high-density portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - 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 VCC or separate rail |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; drive to GND for system reset initiation |
| 4 | GND | Analog and digital ground reference - must connect to low-impedance system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.31V with ±2.5% accuracy over -40°C to +125°C - eliminates need for external resistor dividers or calibration |
| Low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications such as smoke detectors and wearables |
| Guaranteed reset validity | Operates correctly down to VCC = 1.0V - ensures deterministic reset behavior during severe undervoltage events |
| Integrated MR debounce | No external components required for pushbutton reset - simplifies BOM and reduces PCB area |
| Negative transient immunity | Rejects VCC glitches < 35µs duration at 100mV overdrive - prevents spurious resets in electrically noisy environments |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: Long-life environmental sensor node powered by CR2032 coin cell, transmitting data every 5 minutes via BLE. IC Role / Device Role / Timing Role: Supervises VCC rail during cold-start and battery depletion; asserts reset if voltage drops below 2.31V to prevent firmware corruption. Use Value: 3μA supply current extends operational life beyond 5 years; 140ms reset pulse ensures full μP initialization before radio wake-up. | Use Scenario: DIN-rail mounted programmable logic controller with isolated 24V DC input stage and 3.3V logic core. IC Role / Device Role / Timing Role: Monitors 3.3V logic supply and provides manual reset via front-panel button for field service recovery. Use Value: MR input with internal 63kΩ pullup eliminates external resistor; -40°C to +125°C rating ensures reliability in uncontrolled cabinet environments. |
| Automotive Body Control Module | Medical Portable Diagnostic Device |
Use Scenario: Low-voltage subsystem managing door locks, lighting, and window controls in 12V vehicle architecture. IC Role / Device Role / Timing Role: Detects brownout during engine cranking (VCC dip to ~6V) and holds μP in reset until stable 3.3V rail is restored. Use Value: Open-drain output enables shared reset bus with other modules; AEC-Q100 qualification confirmed via /V suffix variants in same family. | Use Scenario: Handheld ultrasound probe with rechargeable Li-ion battery and real-time signal processing ASIC. IC Role / Device Role / Timing Role: Ensures clean power-on reset of FPGA and ADC interface after battery insertion or charger disconnect. Use Value: 2.31V threshold matches typical LDO dropout voltage; 140ms timeout accommodates slow-ramping analog supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR23D3+ | Same 2.31V threshold and 140ms timeout, but push-pull active-low output and no MR input | Lacks manual reset capability; requires external pullup only if interfacing with open-drain buses | Select when manual reset is unnecessary and board layout favors simpler output drive |
| TPS3808G33DBVR | 2.33V threshold, 200ms timeout, 1.8μA ICC at 1.8V, push-pull active-low, no MR input | Lower current draw but no manual reset; different pinout (SOT-23-5 vs SC70-4) | Choose for ultra-low-power applications where MR is handled externally or omitted |
Compared with MAX6326XR23D3+ and TPS3808G33DBVR, the MAX6386XS23D3+ uniquely combines open-drain output flexibility with integrated debounced MR in the smallest 4-pin SC70 footprint - critical for space-constrained, field-serviceable designs requiring both autonomous and operator-initiated reset.
Availability
MAX6386XS23D3+ is available at Aetrix Electronics and suitable for battery-powered IoT sensors, 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 MAX6386XS23D3+ 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 industrial, automotive, communications, and computing markets.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for ultra-low-power, high-reliability reset generation in space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6386XS23D3+ and how tightly is it specified?
The MAX6386XS23D3+ has a factory-set nominal reset threshold of 2.31V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This corresponds to a minimum threshold of 2.25V and maximum of 2.37V at +25°C, tightening to 2.25V–2.37V across temperature per the datasheet's electrical characteristics table.
Does MAX6386XS23D3+ require an external pullup resistor on the RESET pin, and why?
Yes, MAX6386XS23D3+ requires an external pullup resistor on the RESET pin because it features an open-drain active-low output. Without a pullup, the RESET line remains floating when deasserted. A typical value is 10kΩ to 100kΩ connected to the host logic rail (e.g., 3.3V), ensuring proper logic-high level and compatible wired-OR bus operation with other open-drain reset sources.
What is the function and electrical behavior of the MR pin on MAX6386XS23D3+?
The MR pin on MAX6386XS23D3+ is an active-low manual reset input with an internal 63kΩ pullup resistor to VCC. Driving MR to GND forces the RESET output low for the full 140ms timeout period, even if VCC remains above threshold. When released, MR returns high via the internal pullup, and reset remains asserted for the remainder of the timeout - enabling robust, debounced reset initiation without external components.
Can MAX6386XS23D3+ operate reliably when VCC drops below 1.8V, and down to what voltage?
Yes, MAX6386XS23D3+ is fully specified to operate down to VCC = 1.0V, with guaranteed correct reset assertion and deassertion behavior. Its reset output state remains valid and predictable even at 1.0V, unlike many competitors that lose functionality below 1.6V. This ensures fail-safe operation during deep brownout conditions common in battery-depleted or poorly regulated systems.
What package type and dimensions does MAX6386XS23D3+ use, and is it RoHS-compliant?
MAX6386XS23D3+ uses a 4-pin SC70 package (package code X4+1), measuring 1.2mm × 1.6mm × 0.75mm with 0.65mm pin pitch. The '+' suffix in the part number explicitly denotes lead(Pb)-free and RoHS-compliant construction, verified per Maxim Integrated's ordering information and package documentation.
MAX6386XS23D3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.31V
- 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
MAX6386XS23D3+ FAQ
1.How can I place an order for MAX6386XS23D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS23D3+ 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 MAX6386XS23D3+ reliable?
The price and inventory of MAX6386XS23D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS23D3+ is usually 5 days.
3.What payment methods are accepted for MAX6386XS23D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS23D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS23D3+?
MAX6386XS23D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS23D3+ 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 MAX6386XS23D3+?
For technical support, including MAX6386XS23D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS23D3+ requirements.
6.How does Aetrix verify that MAX6386XS23D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6386XS23D3+ 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 MAX6386XS23D3+ meets industry standards.
7.What is the process for return or replacement of MAX6386XS23D3+?
All MAX6386XS23D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS23D3+, 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 MAX6386XS23D3+ part is unused and in its original packaging.
Return procedure for MAX6386XS23D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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