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Analog Devices Inc./Maxim Integrated MAX6383XR31D1
- Part No.:
- MAX6383XR31D1
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR31D1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,307
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Product details
Overview
The MAX6383XR31D1 from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 3.08V reset threshold (±2.5% over -40°C to +125°C), and 140ms minimum reset timeout period. It monitors VCC from +1.8V to +5.0V while consuming only 3µA at +1.8V, and guarantees valid reset state down to VCC = 1.0V. It is used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383XR31D1 datasheet, MAX6383XR31D1 pinout, MAX6383XR31D1 application, or MAX6383XR31D1 equivalent, key selection considerations include its 3-pin SC70 package, open-drain output requiring external pull-up, ±2.5% threshold accuracy over temperature, 140ms reset timeout, and compatibility with systems requiring low quiescent current and guaranteed operation down to 1V supply.
Technical Context
The MAX6383XR31D1 implements a precision voltage comparator with internal 3.08V reference and an on-chip timer that asserts reset for ≥140ms after VCC rises above threshold. Its open-drain RESET output requires an external pull-up resistor and remains low during VCC undervoltage or transient events.
It features negative-going VCC transient immunity up to 35µs at 100mV overdrive, operates across -40°C to +125°C, and maintains reset assertion validity down to VCC = 1.0V - ensuring robust behavior during deep brownouts without external support circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V nominal, ±2.5% over -40°C to +125°C - ensures accurate brownout detection across industrial temperature range |
| Reset Timeout Period | 140ms minimum - provides sufficient hold time for µP initialization before release |
| Supply Current | 3µA at +1.8V - enables multi-year battery life in always-on portable devices |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion even during severe brownout down to 1V |
| Output Type | Open-drain active-low - allows wired-OR configuration and level translation via external pull-up |
| Reset Propagation Delay | 35µs max (VCC falling at 10mV/µs) - ensures fast response to supply collapse |
| Threshold Tempco | 60ppm/°C - minimizes drift-induced false resets over temperature |
Pinout & Package
MAX6383XR31D1 is housed in a 3-pin SC70 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with lead-free RoHS-compliant finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset output requiring external pull-up; sinks 80µA @ VCC ≥ 1.0V with VOL ≤ 0.3V |
| 2 | VCC | Main supply input and monitored voltage rail; accepts +1.0V to +5.5V |
| 3 | GND | Ground reference for internal comparator and timer; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.08V with ±2.5% tolerance over full temperature range eliminates need for external resistor divider calibration |
| Ultra-low supply current | 3µA at +1.8V enables integration into energy-harvesting and coin-cell-powered systems |
| Guaranteed reset validity down to VCC = 1.0V | Ensures deterministic reset assertion during deep brownout without external support components |
| Negative-going VCC transient immunity | Rejects glitches ≤35µs wide at 100mV overdrive - reduces false resets in noisy power environments |
| Open-drain output architecture | Supports mixed-voltage system interfacing and multi-source reset bus sharing |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG sensor operating from single Li-ion cell with dynamic load-induced voltage sag. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during <3.08V brownout to prevent firmware corruption during low-battery operation. Use Value: 3µA quiescent current extends battery life; 140ms timeout ensures reliable µC boot sequence completion before release. | Use Scenario: Remote analog input module powered by 24VDC supply with local 3.3V LDO feeding µC and ADC. IC Role / Device Role / Timing Role: Primary VCC monitor for 3.3V rail, asserting open-drain reset shared across multiple peripherals. Use Value: Open-drain output enables wired-OR reset bus; ±2.5% threshold accuracy prevents spurious resets under thermal stress. |
| Smart Meter Battery Backup | Automotive Body Control Module |
Use Scenario: Electricity meter retaining real-time clock and tamper log during AC mains failure using supercapacitor backup. IC Role / Device Role / Timing Role: Monitors backup 3.0V rail to initiate controlled shutdown and nonvolatile save before power loss. Use Value: Valid reset down to VCC = 1.0V ensures last-write integrity even as supercapacitor discharges below 2.0V. | Use Scenario: Low-power door module with CAN transceiver and wake-on-LIN capability. IC Role / Device Role / Timing Role: Resets microcontroller upon 5V supply dip during load dump or cold-crank conditions. Use Value: 60ppm/°C tempco and -40°C to +125°C rating ensure stable threshold across automotive under-hood temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1+T | 3.08V threshold, push-pull active-low output, 240ms timeout, SC70-3 package | Push-pull output eliminates need for external pull-up but cannot be wired-OR'd | Select when board layout lacks space for pull-up resistor or when driving high-capacitance reset lines directly |
| TPS3808G30DBVR | 3.0V threshold, open-drain active-low, 200ms timeout, SOT-23-3 package, 1.8µA ICC at 1.8V | Slightly lower supply current and different timeout; same open-drain interface | Select when ultra-low ICC (<2µA) is critical and 200ms timeout is acceptable for system boot timing |
Compared with MAX809TRD1+T and TPS3808G30DBVR, the MAX6383XR31D1 offers tighter threshold accuracy (±2.5% vs ±3.5% typical), shorter 140ms timeout for faster recovery, and proven transient immunity - making it optimal for compact, thermally demanding, or battery-constrained designs where precise brownout response is essential.
Availability
MAX6383XR31D1 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart meter battery backup systems, and automotive body control modules requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6383XR31D1 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 was engineered specifically for low-voltage, low-power microprocessor supervision in space-constrained and battery-sensitive systems - emphasizing ultra-low ICC, guaranteed operation down to 1V, and high-accuracy reset thresholds.
FAQ
What is the exact reset threshold voltage of the MAX6383XR31D1?
The MAX6383XR31D1 has a factory-set nominal reset threshold of 3.08V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "31" corresponds to VTH(min) = 3.00V, VTH(nom) = 3.08V, and VTH(max) = 3.15V.
Does the MAX6383XR31D1 require an external pull-up resistor on the RESET pin?
Yes, the MAX6383XR31D1 features an open-drain active-low RESET output and requires an external pull-up resistor to the appropriate logic rail (e.g., 3.3V or 5V). The datasheet specifies that the output sinks 80µA with VOL ≤ 0.3V at VCC ≥ 1.0V, so a standard 10kΩ–100kΩ pull-up is typically sufficient for most applications.
What is the minimum VCC voltage at which the MAX6383XR31D1 guarantees correct RESET logic state?
The MAX6383XR31D1 guarantees valid RESET output state down to VCC = 1.0V. This is explicitly stated in the Electrical Characteristics table and Detailed Description section, ensuring deterministic reset assertion during deep brownout conditions - a key differentiator from many competing supervisors that fail below 1.5V.
Can the MAX6383XR31D1 be used in automotive under-hood applications?
Yes, the MAX6383XR31D1 is rated for operation from -40°C to +125°C and features 60ppm/°C threshold tempco, making it suitable for automotive body control modules and other under-hood applications. Its negative-going VCC transient immunity and guaranteed 1.0V operation further support robustness in harsh electrical environments.
What package options are available for the MAX6383XR31D1?
The MAX6383XR31D1 is offered exclusively in the 3-pin SC70 package (package code X3-2), with dimensions of 2.0mm × 2.1mm × 0.95mm and RoHS/lead-free compliance. It is not available in µDFN or 4-pin SC70 variants - those are reserved for other members of the MAX6381–MAX6390 family such as MAX6384 or MAX6390.
MAX6383XR31D1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR31D1 FAQ
1.How can I place an order for MAX6383XR31D1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR31D1 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 MAX6383XR31D1 reliable?
The price and inventory of MAX6383XR31D1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR31D1 is usually 5 days.
3.What payment methods are accepted for MAX6383XR31D1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR31D1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR31D1?
MAX6383XR31D1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR31D1 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 MAX6383XR31D1?
For technical support, including MAX6383XR31D1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR31D1 requirements.
6.How does Aetrix verify that MAX6383XR31D1 is sourced from the original manufacturer or authorized distributors?
All MAX6383XR31D1 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 MAX6383XR31D1 meets industry standards.
7.What is the process for return or replacement of MAX6383XR31D1?
All MAX6383XR31D1 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR31D1, 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 MAX6383XR31D1 part is unused and in its original packaging.
Return procedure for MAX6383XR31D1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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