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Analog Devices Inc./Maxim Integrated MAX6383XR31D1-T
- Part No.:
- MAX6383XR31D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR31D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,951
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Product details
Overview
MAX6383XR31D1-T 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), 1ms minimum reset timeout, and 3μA supply current at +1.8V. It monitors single-supply VCC in battery-powered embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383XR31D1-T datasheet, MAX6383XR31D1-T pinout, MAX6383XR31D1-T application, or MAX6383XR31D1-T equivalent, key selection criteria include its 3-pin SC70 open-drain configuration, guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy over temperature, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
The MAX6383XR31D1-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 3.08V threshold, with internal timer enforcing a 1ms minimum reset assertion after VCC recovery. Its open-drain RESET output requires an external pullup and remains valid for VCC ≥ 1V, enabling operation during deep brownout conditions.
No manual reset (MR) or auxiliary RESET IN inputs are integrated-this variant is optimized for minimal footprint and deterministic single-supply monitoring without user-triggered or dual-voltage supervision functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V nominal (±2.5% over -40°C to +125°C); ensures reliable detection of VCC drop below safe microprocessor operating voltage. |
| Reset Timeout | 1ms minimum; guarantees sufficient reset pulse width to initialize microcontrollers even under fast power-up conditions. |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered IoT sensors and portable devices. |
| Operating Voltage | 1.0V to 5.5V; supports valid reset assertion down to VCC = 1V, critical for ultra-low-voltage brownout recovery. |
| Output Type | Open-drain active-low RESET; allows wired-OR configuration with other system reset sources and flexible voltage-level translation via external pullup. |
| Transient Immunity | Rejects negative-going VCC glitches ≤35µs at 100mV overdrive; prevents spurious resets in electrically noisy environments. |
| Package | 3-pin SC70 (outline 21-0075); occupies <0.8 mm² PCB area, suitable for space-constrained wearables and medical patches. |
Pinout & Package
MAX6383XR31D1-T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with pin 1 = RESET (open-drain active-low), pin 2 = VCC, pin 3 = GND. No NC or auxiliary pins - minimal footprint optimized for single-rail monitoring.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; must be pulled up externally to define logic-high level and sink current during reset assertion. |
| 2 | VCC | Main supply input and monitored voltage rail; powers internal circuitry and serves as the sole reset trigger source. |
| 3 | GND | Analog and digital ground reference; required for accurate threshold comparison and stable reset timing. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.08V with ±2.5% tolerance across -40°C to +125°C eliminates need for external resistor dividers or calibration. |
| Ultra-low quiescent current | 3μA at +1.8V enables >10-year battery life in always-on monitoring applications such as remote sensors. |
| Valid reset down to VCC = 1V | Ensures deterministic microcontroller initialization during deep brownout, avoiding undefined state or lockup. |
| Open-drain output architecture | Supports mixed-voltage systems and shared reset buses without level-shifting components or contention risk. |
| Negative transient rejection | Immunity to sub-35µs VCC dips prevents false resets in automotive or industrial environments with switching noise. |
Applications
| Battery-Powered Wearables | Industrial Sensor Nodes |
|---|---|
Use Scenario: Continuous heart-rate monitoring in wrist-worn health trackers powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Supervises 1.8V core supply and asserts open-drain RESET to ARM Cortex-M0+ MCU during battery voltage sag below 3.08V. Use Value: 3μA supply current extends battery life beyond 2 years; 1ms timeout ensures full MCU register initialization before code execution. | Use Scenario: Wireless vibration sensor deployed on factory motors, operating unattended for 5+ years. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output feeding LoRa transceiver and MEMS accelerometer; triggers reset on brownout. Use Value: ±2.5% threshold accuracy over -40°C to +125°C guarantees consistent trip point across ambient extremes; SC70 footprint minimizes PCB area in sealed enclosures. |
| Medical Diagnostic Patches | Smart Metering Modules |
Use Scenario: Disposable ECG patch with Bluetooth LE connectivity, requiring FDA-grade power reliability. IC Role / Device Role / Timing Role: Provides fail-safe reset to ultra-low-power MCU upon electrode contact loss or battery depletion. Use Value: Valid RESET assertion down to VCC = 1V ensures controlled shutdown even during final battery discharge phase; RoHS-compliant SC70 package meets medical material requirements. | Use Scenario: Municipal water meter with 10-year lithium-thionyl chloride battery and cold-temperature operation. IC Role / Device Role / Timing Role: Supervises 3.6V backup supply feeding real-time clock and metrology ASIC during main power failure. Use Value: Negative transient immunity prevents false resets from pump motor switching noise; AEC-Q100 qualified variants available for enhanced reliability. |
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 | Same 3-pin SC70, 3.08V threshold, but push-pull active-low output; higher ICC (15μA typical at +3.6V). | Lacks open-drain flexibility; cannot share reset bus or interface with higher-voltage logic without level shifters. | Select when board already uses push-pull reset topology and lowest possible BOM count is prioritized over current savings. |
| TPS3808G30DBVR | 3-pin SOT-23, 3.0V threshold (±0.5%), 20ms min timeout, 1.1μA ICC at +1.8V; no VCC = 1V guarantee. | Higher accuracy but longer timeout limits use in fast-boot systems; lower current benefits ultra-long-life designs where 1ms timeout is not required. | Select when tighter threshold tolerance (±0.5%) and sub-2μA current outweigh need for 1ms timeout and VCC = 1V operation. |
Compared with MAX809TRD1-T and TPS3808G30DBVR, MAX6383XR31D1-T uniquely balances ultra-low ICC (3μA), 1ms timeout, open-drain flexibility, and guaranteed operation down to VCC = 1V - making it optimal for space- and energy-constrained systems demanding rapid, robust reset behavior.
Availability
MAX6383XR31D1-T is available at Aetrix Electronics and suitable for battery-powered wearables, industrial sensor nodes, medical diagnostic patches, and smart metering modules requiring stable component supply and long-term lifecycle support.
Supply support for MAX6383XR31D1-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 interface applications in industrial, automotive, and computing markets.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP reset supervision in miniature SC70/μDFN packages - engineered specifically for space-constrained, battery-operated systems needing guaranteed reset integrity across wide temperature and voltage ranges.
FAQ
What is the exact reset threshold voltage of MAX6383XR31D1-T and how stable is it over temperature?
The MAX6383XR31D1-T has a factory-set nominal reset threshold of 3.08V, with guaranteed accuracy of ±2.5% over the full operating range of -40°C to +125°C. This stability is achieved through laser-trimmed bandgap references and low-drift comparator design, ensuring consistent trip points in automotive under-hood or industrial outdoor deployments without external calibration.
Does MAX6383XR31D1-T support manual reset functionality or auxiliary voltage monitoring?
No, MAX6383XR31D1-T does not include manual reset (MR) or auxiliary RESET IN inputs. It is a dedicated single-supply supervisor with only VCC monitoring and open-drain RESET output. For designs requiring MR or dual-rail supervision, consider MAX6384XR31D1-T (MR-enabled) or MAX6387XR31D1-T (RESET IN capable), both in the same family.
What external components are required for proper operation of MAX6383XR31D1-T?
MAX6383XR31D1-T requires only an external pullup resistor on the RESET pin (typically 10kΩ to VCC or host logic rail) due to its open-drain output. A 0.1μF ceramic decoupling capacitor between VCC and GND, placed near the device, is mandatory for noise immunity and transient rejection - no resistors, diodes, or additional ICs are needed for basic reset supervision.
Can MAX6383XR31D1-T be used in automotive applications?
Yes - the /V automotive-qualified version (e.g., MAX6383XR31D1/V+T) is AEC-Q100 Grade 1 qualified (-40°C to +125°C) and available. The standard MAX6383XR31D1-T operates across the same temperature range but lacks formal automotive qualification documentation and traceability; for production automotive ECUs, specify the /V suffix variant.
How does the 1ms reset timeout of MAX6383XR31D1-T compare to similar supervisors, and why is it beneficial?
The 1ms minimum reset timeout of MAX6383XR31D1-T is the shortest option in the MAX6381–MAX6390 family and significantly faster than common alternatives like 20ms or 140ms. This enables rapid system boot in time-critical applications such as industrial PLC I/O modules or medical defibrillator self-test sequences, where minimizing reset hold time reduces overall startup latency without compromising initialization reliability.
MAX6383XR31D1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-T FAQ
1.How can I place an order for MAX6383XR31D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR31D1-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 MAX6383XR31D1-T reliable?
The price and inventory of MAX6383XR31D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR31D1-T is usually 5 days.
3.What payment methods are accepted for MAX6383XR31D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR31D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR31D1-T?
MAX6383XR31D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR31D1-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 MAX6383XR31D1-T?
For technical support, including MAX6383XR31D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR31D1-T requirements.
6.How does Aetrix verify that MAX6383XR31D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR31D1-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 MAX6383XR31D1-T meets industry standards.
7.What is the process for return or replacement of MAX6383XR31D1-T?
All MAX6383XR31D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR31D1-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 MAX6383XR31D1-T part is unused and in its original packaging.
Return procedure for MAX6383XR31D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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